Go kart gear ratio for torque For example, if your kart has a 12 tooth clutch sprocket the drive sprocket should have 72 teeth. by switching to a 10T and 60T sprocket setup (60/10=6), the gear ratio would be 6:1 Comet Torque Converter Belts | Go Kart Belts (gokartsupply. com) Here's the blastLED 40 series gearbox I found on their site, but it doesn't look like much, just a higher rated FNR gearbox. CVT or chain driven 11. I still think you are going to pull wheelies though, haha! Also the smaller the rear axle sprocket, the higher You can also get away with a little bit taller ratio using a torque converter. As torque converters adjust gear ratios based on engine RPM, they are great for power applications. This calculation involves understanding the relationship between the number of teeth on the rear sprocket, connected to the rear axle, and the number of teeth on the front sprocket, linked to the engine I'm working on upgrading a Manco go-kart with a live axle and torque converter. 5 hp motor off of a pressure washer and I was planning on using a torque converter with a 10 tooth sprocket. 5:1, this is not enough gear for this track. I was wondering what gear ratio I would need for good acceleration and good top speed of 40mph plus. So a "normal" clutch is just a centrifugal clutch. D. 09 DESIGN OF TRANSMISSION SYSTEM Fig. That will make your gear ratio between the engine and the wheels 6:1. e. 33 4th – 1. I've read that ratios of 1:6 to 1:8 should be used for 20" tires and I believe I'm currently at 1:5. hi, i bought a 40 series torque converter and don't really know what is the best ratio. Skip to content. The axle sprocket is a 60 tooth. Experimenting with gear ratios could allow you to find that sweet spot between blazing acceleration and a satisfying top speed. I’m looking into getting a 60 tooth sprocket for the live axle to sort out the gear ratio. 5 we get 19. VEVOR Go Kart Forward Reverse Gear Box 10T #40/41 12T #35 Go Karts Accessories TAV2 30 40 41 for 2HP-7HP Engine, Transmission Local Honor, Structural Parameters: Gearbox Shaft Size: 5/8"; Keyway : 3/16"; Forward Ratio: 1: 1. Power Loss: Most mini-bike engines can produce 6. Feb 23, 2022 #3 The Chinese I’m CVTs work as good as the Comet’s do. Gear Ratio. 5:1 [green lights for 405 lbs or less] especially if your plan is to lower the moved masses that means just two more teeth on the rear will do nicely. Forward gear ratio: 1. 5hp) attached to a 200-300 lb euro kart with fully grown adult rider will reach 32mph in a stock maxed out setup with a 41 tooth sprocket, same setup with a gx270(9hp) will do much faster Gear ratio is only part of the equation. 43. Get the Final Ratio on multi sprocket setup used in jackshafts on go karts and mini bikes. The type of clutch and gear ratio chosen depends on the vehicle or machine’s specific needs Understand gear ratios: Familiarize yourself with the gear ratios of your reverse gearbox to understand its performance characteristics. Understand gear ratios: Familiarize yourself with the gear ratios of your reverse gearbox to understand its performance characteristics. How to adjust the 30 series Torque coverter: In shifter karts, gear ratios work similarly to other karts but with an added layer of complexity due to the presence of a multi-speed gearbox. A go-kart with a 12T clutch with a 60T Axle sprocket on the other hand will have a higher top speed but won’t provide the wheels with a lot of torque and can cause your clutch to fail on heavy go-karts or go-karts with big tires. If you have 12" tires and a 4:1 gear ratio you will have more torque than the same set up gear ratio of 4:1 with 22" tires. They say its forward Go-kart transmissions come in three main types: direct drive, automatic (clutch and torque converter), and manual (gearbox), each with unique benefits and suited for specific applications. 8: and hope for the best. Ok well basically I have just bought a 125cc Honda engine from my friends motocross bike and it has 5 gears. Discover how to tweak your go-kart's torque converter for optimum performance. Divide Torque at the axle (in Lb-Ft) by the radius of the tire (in ft) to get a linear force. IF the engine has the power to get it going that fast. 5:1 reduction. To give you a better This is the formula to find the max speed, you can play around with gear ratio to find what speed best suits you I'm doing the formula for a torque converter (for clutch replace total ratio with just the gear ratio) Driven sprocket / drive sprocket = sprocket ratio Sprocket ratio / torque converter ratio (high or low) = total ratio The top speed of your go-kart with a predator 212 engine will be 20-30 mph, the exact top speed will depend on the drive wheel’s diameter, gear ratio, and the engine’s rpm (3600 for a Predator 212). Not looking to add a TC yet and trying to avoid using a jackshaft unless I absolutely have to. On the other hand, there is no legislation that says you need to limit how fast If it doesn’t slide over the bearing, I can’t see how it will ever shift all the way into high gear. 6 Tips: Please check the model and pictures provides to ensure they are appropriate Feature: The go kart forward and reverse gear box kit has Depends on your final gear ratio. This usually means running a larger rear sprocket relative to the Although there isn't a one-size-fits-all solution, a frequently recommended ratio is 6:1, suitable for many tracks, offering a balance between top speed and acceleration. The Kart has a hard time taking off and Torque converters are the way to go if you have the cash. I'd also get a smaller drive sprocket-- a 70T is huge. 7:1 to 0. The torque converter in a go-kart, as opposed to a standard Hi, I'm new here. 3) Regarding the sprocket tooth ratio, I believe as it currently stands I'm on the low end of the ratio. If the rate is incorrectly set from the You want a gear ratio that provides rapid acceleration off each corner so you can get back up to speed quickly. Its my first time here. This is my first post! I am looking to find out what kind of gear ratio I need to run with my gokart. The belt mass in the 30 series is desirable in applications requiring extra rugged driving ability, such as dune buggies, go-karts, mini-bikes, ATV’s, grounds maintenance equipment, materials handling devices and industrial equipment. There’s also an option to enable a jacksh For a torque converter system, you need to consider its variable ratio: Use our calculator to determine the top speed and gear ratio for your tire size. It already has a new Predator 212 installed, so we're optimistically capable of around 8 ft-lbs at 2,500 rpm. A centrifugal clutch consists of 4 essential Hi guys, I'm planning to build a Go-Kart with 6. A higher gear ratio means more torque, leading to better acceleration, while a lower gear ratio results in higher top this go kart used to run a 5 hp suby engine with 3:1 gear ratio on 18 inch tires with CC so it does not make sense to me how my idea would not work? i also recently tried to do CC with the 3:1 ratio on those 18" tires with the new 6. Engines. The correct ratio depends on your tire and the weight on the kart, as a general rule, a 6:1 gear ratio for 13″ tires is ideal, if you are Menu Site navigation. ,3:1) Go Kart Gear Ratio Tool. Metric Value; Engine Power: 20 HP: Gear Ratio: 4. 5hp power but not all the power reaches the wheel. IPARTS EXPERT’s 30 Series Torque Converter – Best Value for Money; Super 30 Series Torque Converter – Best for Modified Engines (4000+ RPM); Original Comet 30 – Best Quality (Also the most Expensive); Mophorn 212CC Torque Converter – The Cheapest; IPARTS Clutch + LAFORMO’s Driven Pulley – Best for 7″ Driven. There\u2019s also an option to enable a jackshaft if you\u2019re running a torque converter instead of a clutch. what would be an optimal gear ratio for good torque and decent top speed (25 to 30)? Also, with 16" tires do I actually need the Jackshaft or can I just go directly from the clutch to the wheel sprocket without You can also get away with a little bit taller ratio using a torque converter. 2 KB · Views: 47 The lower the gear ratio (higher number), the more torque you have and lower your speed. More likely, you A stock Tav2 might hit top ratio at 2500 rpm with the kart up on jack stands and just spinning the axle, but actually driving it might be right at 3600. About Comet Kart Sales; Team; Torque Converter; Torque Convertor Belts; Comet Torque-A Verter TAV2 Learn how to modify the series 30 torque converter to get the most power, torque, or RPM for your Go-kart or Minibike. Mophorn Torque Converter 4-7HP Go Kart Clutch 1Inch Replaces Comet TAV2 Manco 10T 40 or 41 and 12T 35 Chain Drive Belt (1" 10T The gear ratio between the clutch sprocket and the drive sprocket should be 1 to 6. Its application is to increase or decrease the speed or torque of the output shaft. Go kart cannot remain in "base ratio" as there is little resistance to go into overdrive. Torque is what’s needed to get the kart moving; if the torque output of the engine is lower than the torque needed to move the kart, the clutch will suffer. I still think you are going to pull wheelies though, haha! Also the smaller the rear axle sprocket, the higher chance you have of throwing the chain at start or under acceleration with that cheap 35 chain. That can make or break some gear ratios. Messages 650 Reaction score 619. Here’s some pics. You can pick any gear, but it's important to Heavy karts, tight tracks: Medium Gear Ratio (e. It's exactly like having a 10-speed bike but only being able to use one gear. Yard Karts Sub; More Contact Info + News. Keaton Member. This is what matters if you want the clutch to last. 5" Driven unit -40D). NOW lower your gear ratio by a factor of 1. The Go-Kart Gear Calculator is for karting enthusiasts, offering a precise method to determine the optimal gear ratio for their machines. The horsepower and torque, along with the go kart gear ratio chart, help figure out the top speed. cause it did not really The gear ratio for your racing go-kart and mini bike is crucial for getting the most performance to reduce your e. Personally, I’d go for oodles of torque any day of the week because you really can’t use all the power to get to the high 200’s or beyond unless you are on a race track where Johnny Law has no jurisdiction. com). If you increase the RPMS (because gearing will burn up your clutch or mess with the belt upon start if you start to go much beyond these max speeds) through performance parts, you will see a 50% gain in The Predator 212 engine is arguably one of the most popular go-kart engines available on the market and is also used to power many other types of recreational vehicles, tools and equipment. 8 :1 in "highest" gear I've got a Streaker fun Kart I'm trying to get sorted out. Learn how to modify the series 30 torque converter to get the most power, torque, or RPM for your Go-kart or Minibike. Sprocket size (if applicable) Anything else? 5:1 ratio is ideal for small mini bikes with small tires. 8 :1 sprocket ratio 11. Karting Drive Ratio Chart Arranged by Sprocket Size. Guys I have a dual engine go kart I’m wanting to add a torque converter but I’m not sure I have enough clearance for on I have The 40 series torque converters are the go-to for 8-18hp Engines such as the predator 301, predator 420, or the honda GX 270 or GX390 and their other clones. The current setup is smoking the centrifugal clutch and mostly not moving my fat old frame around, so it definitely needs an upgrade. When testing the go kart, it seemed to have great acceleration (We are running an 11 tooth clutch to a 60 tooth sprocket on a live axle). 6; RPM: 2300; Shifter Cable Length: 51. Clutches. I. You can easily calculate your desired gear ratio and top speed of your go-kart by entering the engine speed, engine sprocket teeth, axle sprocket teeth and tire height. That means your gear ratio is 3. Torque: 13. Since the Go Kart is mostly wood, it's a expansion limiting weightpack for the series 20 and 30 TCs. It is rated at 3600 rpm and In this video you will learn how to calculate gear ratio and top speed of your DIY project with a chain drive. Thread starter The Repairist; Start date Sep 22, 2017; Status Not open for further replies. Most factory karts in the States have a 60T, but you can go a good deal lower. 8Nm@5000 rpm Max Torque:10. Power Loss: Most Comet TAV2 30 Series Torque Converter Systems for 3hp to 8hp Go Karts and Mini Bikes. Gear Ratio Question Thread starter MIG1773; Start date Mar 4, 2013; Status Not open for further replies. It has 19 inch rear tires, 10 tooth sprocket on the torque converter and a 42 tooth sprocket on the axle. 30 series torque converter karts with 5-7 hp engines should go up to 35 mph 40 series torque converter karts with 8-16 hp engines should go up to 40 mph. 4:1 will probably be ok . Comet Torque Converter Clutches & Parts Most Comet torque converter systems range in ratio from approximately 3:1 initially through about 1:1 when "fully shifted. 5:1 ratio, read post #1 sid VEVOR Go Kart Gearbox features high-quality metal, 3 shift modes, and complete accessories for precise torque and easy installation on 2-7 HP engines. 4:1) result in more torque and acceleration, but lower top speed whereas a lower gear ratio (e. Change Sprockets - Change Speed. Yesterday I got a yerf 3002 for only $200, with a gx390 clone on it. Reverse Gear is not possible for Mid XRX, but the karts are small enough that they can be easily 4. Light=faster acceleration. Torque converters are preferred with off-road go-karts and clutches are preferred for racing go-karts. In this piece, we’ll dive into gear ratios’ importance, how to figure them out, and choosing the best one for the Predator 212’s peak performance. 7:1 (i. That will gear you for Go Kart Forward Reverse Gear box Kit Replacement for: for 2HP-13HP Engine 30 Series Torque Converter 35 Chain 12T and 40/41 Chain 10T Go Karts 212cc Specifications: Go-kart transmissions come in three main types: direct drive, automatic (clutch and torque converter), and manual (gearbox), each with unique benefits and suited for specific The GoPowerSports Torque Converter is a great fit for go-karts with a Predator, Harbor Freight, Tecumseh, Briggs & Stratton or Honda engine. I would like to increase the size of those tires to probably 18 inches, but I Most go karts are limited by having only 1 gear ratio. 9 tooth gear. 75:1 ratio]) I think you can get away with 6. If you know ahead of time that you will exceed the 400 pounds then buy a torque converter go-kart and avoid the problems of burning up the clutch asking it to do more than it was designed for. 63:1 or 6. Gear Ratio . I'll tell you guys how it turns out . 40-SERIES-GO-KART-FORWARD-REVERSE-GEAR-BOX (blastled. Racing Parts 120; GX160/GX200. Weight also comes into play as well. We use Gear Ratio to calculate the speed and torque of the output gear or shaft when the input shaft or gear torque is known. How To Calculate your Kart's Top Speed. If you're looking for a tire-fryer, gear maybe 6:1 or lower and forget about that 50MPH. Guys I have a dual engine go kart I’m wanting to add a torque converter but I’m not sure I have enough clearance for on I have 5:1 ratio is ideal for small mini bikes with small tires. Manufacturer ‎AlveyTech : Brand ‎monster motion : Product Dimensions So I just upgraded from 13x4 inch rear wheels to 18x8, I have a non-hemi predator 212cc. I think i'm gonna build another one with a torque converter. Low gear reduction ratio (if applicable) 6. doesn't work very well. What should I recently bought a go power sports tav 30-75 aftermarket torque converter and I noticed that it does not reach the 1:1 ratio or the overdrive. So i have a yerf dog buggy with a 9 hp briggs with a torque converter, it cannot for the love of god climb hills without smoking belts. So, I'm building a go kart with a 5. I want to say setting up a "big block" with a TC and you can probably shoot for 36-40mph at 3600 RPM. cart3. Go-Kart Torque Converter vs Clutch Torque Converter. Way better acceleration with minimal top-end loss in my experience on a 212. Fast way to determine Gear Ratio and Speed. Comet 218352A / Comet 218353A / That can make or break some gear ratios. This switching may be done manually (by the operator) or automatically. buy a jackshaft gear it 3:1 on one and 2:1 on the other side axle sprocket 20-30 teeth is nicely providing you clearance and the 6:1 overall ratio keeps your kart moving without destroying a clutch) Or buy a Torque converter instead, gear 4. 77 ft lbf) Top Speed: 31. or lap times. " In a broader sense, the over-all ratio of the drive train also includes the sprocket or gear ratio and is determined by multiplying these separate Hello all. I've tried a 72t direct to the axle. The gear ratio affects the The ideal gear ratio for a go-kart provides the optimal balance between low-end torque, acceleration, and maximum speed. System: Belt; Gear Ratio: Variable; Efficiency: 80%; Torque: Low-End; Cost The issue was that the torque converter never left the original ratio on the driven pulley - i. Explore our comprehensive Gear Ratio Chart for Go Karts to optimize your vehicle’s performance on the track. The gear ratio remains the same across all RPM ranges of the engine. 3:1 Reverse gear ratio: 2. I dont know what gear ratio I should use. You can use a torque converter on a go kart or a mini bike. lol. 6:1. 3; Reverse Ratio: 1: 2. pros: will have the ideal gear ratio, and will accelerate 2x-3x faster than clutch upon take-off; cons: will not be able to rev past ~5500 rpm; 4) change to a "juggernaut" torque converter and gear for approx 28 mph at 3600 rpm. This makes them the better choice for karts that will be driving at lower speeds and require KartFab has some good guidelines for setting up gear ratios. I know, here come the comments on too low of a ratio, but it is a split sprocket so i Go Kart Forward Reverse Gear box Kit Replacement for: for 2HP-13HP Engine 30 Series Torque Converter 35 Chain 12T and 40/41 Chain 10T Go Karts 212cc Specifications: Forward Ratio: 1:1. 18"/130 cm. I imagine this might cause belt slippage. 7 gear ratio. More likely, you have a 12T clutch. the go kart has 18inch rear wheels but its quite small and also id prefer to have Vijay et al. The rpm of the engine is in between 2700 and 3100 (we haven’t been able to test that very well yet). Gear ratios multiply. Im have a lot of trouble finding a good gear ratio for the kart. VEVOR Go-Kart Torque Converter, 3/4" Go Depends on your final gear ratio. 4:1 to 8:1, the driven pulley will actually adjust like it is supposed to. Heavy karts, tight tracks: Medium Gear Ratio (e. a 12:1 reduction in the gearbox with a 0. With 16" Tires and a 40 series CVT (with 7. So 48/14=3. g. Max Torque: 9. 5 Ft = 120 lbs of linear force. 3 lbs. 36:1 gear ratio with 16 inch tires and a centrifugal clutch. If you have 12" Tires, then the radius is 0. Dividing it by the gear ratio 2. Mph good sir, specifically a 2 plate wet clutch and Honda gx200 (6. 60 teeth on axle , 18inch tire= 6. A regular clutch, on the other hand, maintains a constant gear ratio. \/p>\n\n\n\n. Messages 9,572 Reaction score 5,621 Location Mayberry, Indiana. 10 tooth Weight: 7. Adding a CVT is like adding gears. cause it did not really If you have an old go kart torque converter that needs to be serviced, this article will show you how to do it step by step. This allows you to have good gear I am having trouble finding a gear ratio that could fit a 8 hp B&S. Forward/High gear reduction ratio 5. Click Here to download Comet's original free Gear Ratio chart Click here to download Comet's new free Gear Ratio chart Yard Karts. If you have an engine with a max power of 2-8hp then go for 30 series and if your engine has max-power of 8-18hp then go for the 40 series. The Predator 212 engine is top-notch for many things, from go-karts to mowers. Thread starter 159357; Start date May 12, 2009; Status Not open for further replies. Stock drive unit springs and weights, stock driven unit spring position Go Kart Gear Ratio Calculator for Jackshaft Setup. Bear in mind that even a CVT only adds so much, it doesn't perform miracles. 710. Air Filters & Carburetors 160/200; Camshafts 160/200 To help you with that, I\u2019ve created a go-kart gear ratio chart and speed calculator. , 8:1) Balanced torque and speed: Moderate top speed: Good balance between acceleration and top speed, suitable for Go Kart Discussion . It's a Hammarhead mudhead and it only tops out at 15 mph but I think it has the power to go much faster. So, consider saving your money on a 10 HP engine and getting a torque converter for a 5. Perhaps 5:1 where you'd otherwise use 6:1 The gear ratio was 4:1, but now in high gear (with overdrive) would be 3. I have a 37 tooth sprocket on Fundamentally, the purpose of the go-kart torque converters is to dynamically modify the gear ratio, which is essential for preserving effective performance at different speeds. Because its a budget go kart, I would like to use a centrifugal clutch and found a 14t one for pretty cheap. Torque convertor problems / wrong gear ratio The second question is the gear ratio may be too tall ( lower number wize) as the primary sprocket is 10 The Go-kart with a 10T clutch and 6:1 gearing will provide more torque for the wheels and help in off-road go-karts, heavy go-karts, and go-karts with big tires. pop the i have a 10 tooth torque converter and i want to get the most top speed possible. GXH50. Torque Converters are very handy in off-road tracks where the roads are bumpy and the go-kart requires lots of torque for smooth driving. 50:1. The sprocket on the engine and the one on the rear axle should have a ratio close to 1:6. [1] considered the top speed of a kart from a manual transmission system engine of gokart, total gear ratio, rolling resistance, air resistance and further more are determined for Buy Mophorn Torque Converter Kit Go Kart,Forward Reverse Gear Box,fit in 30 Series Mini Bike Our go-kart torque converter is the latest TAV2/30 asymmetrical series. Most Comet torque converter systems range in ratio from approximately 3:1 initially through about 1:1 when "fully shifted. Now I know for centrifugal clutches there should be a gear ratio of at least 6:1, does this apply the same to TCs? Or could I have a 48 tooth sprocket on the axle to the 10T on So I am building myself an offroad kart and I was wondering what gear ratio I should use with my kart. Keywords: Transmission, Go-Kart, Final Drive Sprocket, Gear Often, a transmission has multiple gear ratios (or simply "gears") with the ability to switch between them as speed varies. 37 Nm @ 9000 rpm· − Ignition: Double spark digital ignition system 2) Transmission and clutch (gear ratios) Form of Clutch: Wet multi-plate · Gear box: 5 velocity fixed mesh 1st – 2. Our kart is quite heavy, since the chassis is compeletely made out of steal and has the form of a small racecar, so it goes over the legs etc. This is also true for their torque converters as they are a great aftermarket replacement for Comet TAV2 units. Torque spins stuff. Gear high, you get more speed. What gear ratio should I use? Where can I find cheap axles? And which fuel should I use? Can I use 1:1 gear ratio? If I can't, why? Sizes rear and front tires? And what's the top speed? what gear ratio do i need/use. The engine I have is 15 hp Honda clone. This gives me a gear ratio of 4. − Avg. Like landuse said. A higher gear ratio means more torque, leading to better acceleration, while a lower gear ratio results in higher top To find the gear ratio, divide the lower tooth # by the upper tooth #. 4 KB · Views: 55 cart2. BMI karts has a great calculator you can use to figure out top speed. Speed came out to 50mph maXpeedingrods Go Kart Forward Reverse Gearbox Kit 212cc for 2HP-13HP Engine 4 Stroke Only Works with 30 Series Torque Converter 3 Shift Modes #35 Chain Go The Predator 212 engine is top-notch for many things, from go-karts to mowers. 43:1. And I just checked a parts diagram and i have the wrong numbers for the stock reduction ratio. Gear Ratios? Thread starter Speedy76; Start date Nov 20, 2016; Status Not open for further replies. 5:1 bore to stroke ratio with a connecting rod thats 2. 1 ft-lb @ 2,500 rpm. . Gear Ratios? . i am going to be using a TC on the engine, my engine is a princess auto 15hp with 18. Reply. With these 18 inch wheels, the calculation on top speed goes from 25 I was wondering what my gear ratio should be with a comet 40. Torque converters are amazing for off-road go-karts which require high torque. Its got 22" tall tires in the rear, a 60 tooth sprocket on the drive shaft and I just installed a predator 212 engine with a 10 tooth centrifugal clutch. Thread starter Trailmaster91; Start date Feb 7, 2016; Status Not open for further PROJECT "Jaffa" Go Kart; PROJECT Gokart resurrection; PROJECT Turbine powered Go-Kart; PROJECT stretching front tyres on rear rims; Expect approximately 2. (Belt is off to move it around) (it’s correct belt because I used same setup on another kart with different gear ratio; 14t:52t) Inner: 12 tooth Live Axle: 36 tooth 40 series tc with 22hp 440cc (modded) 6in wide 8in tall slicks At higher speed the pulleys change so that there is a lower gear ratio, meaning more speed. Test your go-kart’s performance in reverse: Safely conduct a test drive of your go-kart, ensuring that the reverse function works effectively and that your go-kart moves smoothly in reverse. 6 HP. Messages We’re looking into changing this gear ratio, but aren’t sure what ratio would be ideal. 5 times the length of the stroke. I will be running a How to Calculate Gearing of your Go-Kart? Go-Karts with Clutch: Gear Ratio = Teeth on Axle Sprocket / Teeth on Clutch sprocket. (52 wheel sprocket with 8T TC sprocket) Geared for 30 mph at 3600 rpm, torque converter does not slip, and go kart wheelies. I think it will constantly be in a “lower” gear and not shift into “highest” gear. Shipped UPS Ground from Shreveport, Louisiana. Thread starter bob58o; Start date Feb 3, 2016; Status Not open for further replies. This means that it has a fixed gear ratio, which is set by the crankshaft sprocket and rear axle sprocket sizes. Thanks for watching! Keywords: Transmission, Go-Kart, Final Drive Sprocket, Gear Often, a transmission has multiple gear ratios (or simply "gears") with the ability to switch between them as speed varies. Cart . com) NOTE Bad Gear ratio (sprocket in axle : sprocket in Torque converter) with large tires. Messages 47 Reaction score 0. Now let’s see why it is so important to know the gear ratios of a go-kart. Here's the TC on their site. Changing the gear ratio can really boost its power. Will I burn my clutch if I have a 2;1 ratio? 7 Before discussing the perfect gear ratio for the Predator 212cc engine, it’s vital to grasp the significance of gear ratios in go-karts. 80/12=6. 5 engine and all Go Kart Discussion . 1; 2; Next. Driven axle/shaft keyed or splined 10. 2 mph more than the non-hemi version. 1Nm@5500 rpm Max Torque: 9Nm@5000 rpm A Gear train consists of two or more gears in series. A centrifugal clutch consists of 4 essential Due to this, it is better suited to racing or lightweight go-karts. 8 Chain Drive A. If you have a torque converter on it, the 4. I have no experience building go karts but it seems fun. 40 SERIES GO KART TORQUE CONVERTER 1" DRIVER and DRIVEN COMBO Replaces COMET (blastled. Mar 27, 2020 #3 the lowest possible gear ratio would be my next goal VEVOR Go Kart Forward Reverse 212cc Gear Box, 30 Series Torque Converter, 10T #40/41 12T #35 Go Karts Accessories TAV2 30 40 41 for 2HP-13HP Engine, Transmission Local Honor, 3 Shift Modes in Torque Converters. Technical Details. This reduces stress and allows the engine to rev higher which means you can lower the gear ratio to increase the torque to the wheels while still achieving the same top speed. 125. 5hp Menu. Torque convertor problems / wrong gear ratio The second question is the gear ratio may be too tall ( lower number wize) as the primary sprocket is 10 teeth, driven sprocket 36 teeth which is 3. What would a good gear ratio be for a good compromise in between torque and speed? Menu. It's got a 6. This means that it can constantly adjust the gear ratio depending on the speed of the kart, or the engine’s RPM. We have a gear ratio speed calculator to help find theoretical mph for your engine rpm, gear ratio, and tire size. Racing Kart Chain Drive Components. a 53 or 54 wheel sprocket [6. , 10:1) Higher top speed: Reduced torque: Faster top speed but slower acceleration, suitable for longer tracks with What does change with the gear ratio is the amount of torque that the belt has to transfer. I wanted to go with a #50 roller chain and wanted the jack shaft for more adjustment. 1 of 2 Go to page 7. K. The torque converter in a go-kart, as opposed to a standard transmission system with fixed gears, enables a fluid, automatic changing of the gear ratio, which is essential for maximizing the engine’s Go Kart Discussion . All the way Home. Both the series 30 and 40 are more similar than they are different, which one’s best for you will depend on your engine. Engines & Clutches; Off Road; Racing & Electric; Tracks you will get more torque for the same Gear ratio/RPM in comparison to a less stiff spring. 3 Reverse Ratio: 1:2. I would probably stick to a typical 6:1 go kart ratio. As an example, let’s calculate the horsepower of a go kart engine producing 8 ft-lbs of torque at 5,000 RPM: Horsepower = (8 x 5,000) / 5,252 = 7. System: Chain; Torque: High-End; Efficiency: <100%; Gear Ratio: Fixed; Cost: Low (Single Disc) Suitability: power transmission applications in high speeds; Application: Chippers, Saw Mills; Usage: Racing Go-Karts; Why Do Some Torque Converters Have A Clutch? Landuse, I think I'll use the 7:1 gear ratio you suggested with the 10 tooth gear on the jack shaft and the 72 tooth sprocket on the axle. my wheels are 18. bmikarts. 6/1 gear ratio, which is just about perfect for general karting. 5. i need help on deciding what gear ratio i need so how many teeth on the engine drive sprocket and how many on the axel sprocket. However the clutch was burnt out, so i'm going to get a cvt. Improve your speed and acceleration with precision calculations. Originally the ratio had these numbers: 10-35 and 9-27 which is a 10. 2. GoPowerSports is a large wholesaler and retail distributor of high-quality go-kart parts. Depends on your final gear ratio. com) Go Kart Sprockets | Go Kart Sprocket Hubs (gokartsupply. 420cc with gov. Gear Ratio: For a mini-bike, we can define the gear ratio as the ratio between the angular speed (rpm) of the engine’s shaft and the angular speed (rpm) of the rear wheel. Driven axle/shaft diameter 9. as for sprocket ratio recommendations. In off-road vehicles and high torque applications like racing go-karts, you may find fixed gear ratios, axle sprockets, or variable gear ratio systems as alternatives. 5:1 reduction feeding it. A link to the I always try to achieve a shorter stroke. John maXpeedingrods Go Kart Forward Reverse Gearbox Kit 212cc for 2HP-13HP Engine 4 Stroke Only Works with 30 Series Torque Converter 3 Shift Modes #35 Chain Go Karts Accessories Go Kart Transmission in Gear Boxes. Cvt has a final drive of 1 Looking for information on Karting Drive Ratio Chart Arranged by Sprocket Size? Then come read about it at Pegasus Auto Racing Supplies! Log In; 0. Account; 0 Item (937)-526-9544 (937)-526-9544; 0 Item; Account; Parts Breakdowns; How-To-Guides; Blog; Catalog; Promotions; Gift Certificate Go Kart Gear Ratio Calculator for Jackshaft Setup www. i am looking for equal torque and speed ratios. Go-Kart (Torque Converter) Hilly: 35 mph: Mini Bike: All The Go-Kart Gear Calculator is an indispensable tool for karting enthusiasts, offering a precise method to determine the optimal gear ratio for their machines. 1:1 The cvt low gear is a 3:1 so gives me a end ratio of 12. remained large even at full throttle, despite the kart having good torque (a video link is in the original post). Belt slipping. Using our gearing torque converter low ratio of 2. Plus your input shaft speed with be 7200 rpm, which is pretty daggum fast. Hi guys, I'm planning to build a Go-Kart with 6. Then i have a 37 tooth sprocket on axle. jpg. Product information . Its great for speed Menu. At around $180, they aren't cheap, but they will allow you to go faster, or climb hills offroad. Torque, HP, RPM, Weight, Top Speed Calc. What gear ratio should I use? Where can I find cheap axles? And which fuel should I use? Can I use 1:1 gear ratio? If I can't, why? Sizes rear and front tires? And what's the top speed? Go-Kart Torque Converter. no idea about the axle, but a 6:1 gear ratio with 18-22″ tires would be fine. Unfortunately, many people end up installing the 40 series the wrong way , mainly because all the tutorial videos and articles are about the 30 series and people assume that the 40 series are installed the same way. 82 3rd – 1. Three Shift Modes: Our go-kart gearbox kit has three shift modes Ideal gear ratio for a total weight up to 420 lbs would be ~6. Mar 14, 2022 #3 9 teeth on torque converter driven. Tuning your kart gearing ratio is very important for on-track performance. How to adjust the 30 series Torque coverter: By having a gear ratio that achieves a high top speed, you add unnecessary pressure to the clutch. Gear low, you get more torque. 7 :1 in "lowest" gear 4. I imagine my gear ratio is off or my pulleys aren’t the right distance apart. We’ll then go through some of the reasons why you should adjust As far as I know a torque converter accelerates in low gear ratio (9:1 for example) and as you go faster the diameter of the motor axle "sprocket" decreases which results in a higher gear ratio So, I'm building a go kart with a 5. You did it! You order it, we ship it! Racing karts, mini bikes, fun karts, yard karts, engines, safety gear, tools, tires, wheels, seats, bodywork. 6 horsepower at peak output. Perhaps 5:1 where you'd otherwise use 6:1 The gear ratio was 4:1, but now in high gear (with On the calculator I selected 22" tires, 3800 RPM's for a stock Predator 212, 40T sprocket on the axle and an 8T sprocket on the torque converter. (I can hear the groans now:ack2:) a little background: The kart is going to be an 18HP v-twin pushing 22 inch rear tires. If you know ahead of time that you will exceed the 400 pounds then buy a torque converter go kart and avoid the problems of burning up the clutch asking it to Additionally, the 12-tooth clutch also supports a lower gear ratio (5:1) compared to a clutch with a 10-tooth sprocket (6:1). (so its no wonder your kart doesn't have much "bottom This means that it has a fixed gear ratio, which is set by the crankshaft sprocket and rear axle sprocket sizes. Direct drive go-karts are simple, affordable, and efficient, but lack variable gear ratios and idling capabilities. could i pull off a 4:1 gear ratio Gear Ratio: For a mini-bike, we can define the gear ratio as the ratio between the angular speed (rpm) of the engine’s shaft and the angular speed (rpm) of the rear wheel. I was wondering if there is a way to limit the travel of the driven clutch without paying a price in belt wear. I couldn't find a sprocket either, I ended up getting a 40 chain "weld on" sprocket, enlarged the center hole with a hole saw and drilled mounting holes. Drive axle keyed or splined 8. A simple 4-step guide for every karting enthusiast. redflash Well-known member. I was able to move back the throttle screw a bit more, allowing me to push the throttle to a higher level. torque converter low ratio of 2. IPARTS EXPERT The GoPowerSports Torque Converter is a great fit for go-karts with a Predator, Harbor Freight, Tecumseh, Briggs & Stratton or Honda engine. Comet Torque-A Verter TAV2 30 Series Parts; Comet 40 Series Drive Unit Parts; Today we discuss gear ratio's Read More Comet Kart engine rpm / wheel rpm = gear ratio 3500 by 350 is a nice round ten (offroad thingy would yield near 20) So in order for the kart to not struggle at all going uphills (on a steep road mind you) it'd need a 10:1 gear ratio and the kart will not go any quicker than 15 mph. This allows you to have good gear Fundamentally, the purpose of the go-kart torque converters is to dynamically modify the gear ratio, which is essential for preserving effective performance at different speeds. t. 34 (43. too. Go-kart racers experiment with different gear ratios and finalize the one best suited for a Finding the optimal ratio ensures your go-kart performs at its best on the track. The newest is from 9 tooth to 23 tooth and 38 tooth to 100 tooth. New posts What would a good gear ratio be for a good compromise in between torque and speed? M. Chains, sprockets & gear ratios Power and torque. Find the perfect gear ratio for maximum speed and acceleration. Other things like how the kart looks, the track, and the tires also matter a lot. Input the tire diameter, highest engine rpm, number of teeth on your clutch or torque converter jack shaft How Gear Ratio Affects the Speed and Torque? As from the definition of gear ratio, it is a ratio between the angular speed of the motor to the angular speed of the axle/wheel. Drive axle/shaft diameter 7. \/p>\n\n\n\n SO i have a go kart with a predator 420, stage 1 with governor still in. Just put in all of your info and use 3600rpm for the max rpm and it should give you a pretty good idea. the max weight of my go kart with me on it is 400 lbs the engine In this guide, I’ll go through a step-by-step process on how to adjust a go-kart torque converter so that you can follow along. 3:1 gear ratio. My uncle gave me his 15 hp horizontal shaft engine. 60 Lb-Ft / 0. Before discussing the perfect gear ratio for the Predator 212cc engine, it’s vital to grasp the significance of gear ratios in go-karts. Torque converter/CVT is ideal for off-road go-karts with frequent start-stop situations, If you’re using a heavy kart with big tires or if you’re going to climb hills then get a Torque converter. - | / Save up to % Save % Save up to Save Sale Sold out In stock. 7:1 initial reduction of your gear ratio upon take-off, then the torque converter will progressively move through to a final drive of approximately 0. Engine yield shaft rakish speed N = 2600 rpm Changing the sizes of your gears lets you fine-tune how the kart performs. Suitable for off-road or heavier go karts. There NOW lower your gear ratio by a factor of 1. 83 2nd – 1. Ohh also, if you do have a #35 10T clutch, that's awesome! I want to find one for my kart, but I've never seen one. Torque converters typically start with a gear ratio that is about 2:1 and will move closer to a 1:1 ratio, the faster the crankshaft spins. T The AlveyTech reverse gearbox transmission for go-karts with TAV2 Series 30 torque converters features a 5/8"shaft and a 10-tooth chain sprocket. Some power is lost during transmission, the loss is high in Torque Converter in comparison to Clutch. If you have 10 Lb-Ft of Torque And if you have a 6 :1 Gear ratio You have 60 Lb-Ft or Torque at the axle. 90:1 (overdriven) at full speed. * your torque and speed is whatis best way o figure gear ratio with a jackshaft? I've got 13hp briggs, 10t clutch 17" tall tires kart weighs about 200lbs. 3) change to 30 series torque converter and gear for a maximum speed of 28 mph at 3600 rpm. New posts Search forums. The engine I'll be running Keywords: Go kart, transmission, gear ratio, sprocket, calculation, electric vehicles. Take note that the actual top That can make or break some gear ratios. The proper way to mount a 40 series maXpeedingrods Go Kart Forward Reverse Gearbox Kit 212cc for 2HP-13HP Engine 4 Stroke Only Works with 30 Series Torque Converter 3 Shift Modes #35 Chain Go Karts Accessories Go Kart Transmission in Gear Boxes. I'll leave some room on the engine mounting plate to bolt on the jack shaft (3/4" axle) and had everything (torque converter/gear on jack shaft) on one side like your jack shaft you showed me. This is a typical power level for a moderately powered go kart suitable for recreational use. As for if you should get a torque converter, for stop-and-go, yes. 5! That would be the best idea, however, lowering the gear ratio will lower speed but, it will increase torque so, it won't take off fast, it'll take off hard & will be more inclined to break traction 5. Attachments. Engine yield shaft rakish speed N = 2600 rpm Hey Im a newbie to the go kart seen and just started by first budget go kart. When choosing a 4-speed gearbox, it is important to consider both factors The FDJ Go-kart centrifugal clutches are the best Clutch for their price, compatible with #40/41/420 chain. Here is the the combo I strive to get. Say you have a 11" rear wheeled 5hp kart with 6:1 ratio governed to 3600 rpm std cent clutch. Higher gear ratios (e. com R. Unlike Touch And Go (TaG) karts with a single gear, shifter karts have a manual transmission, typically with a 6-speed transmission, allowing drivers to change gears during a race. I ran the numbers, and I'm coming up with a 3. That is why a V-twin riding tractor can use a 1/2 belt with a 20+hp twin engine, the final drive ratio is adequate, so it can tow a big load without burning up the belt. to my way of thinking I,m thinking it should be around 5 to 6 to one. 9:1. Messages Go Kart & Mini Bike. In this piece, we’ll dive into gear ratios’ Torque converter and gear ratio. I have a question about a gear ratio issue I'm having. The kart is in good condition, but the wheels are stuck on. 5hp,3600 torque and 196cc. go faster than gas go karts, offering instant acceleration and hitting top speeds more quickly because of the immediate torque delivery of With this size what would be the best ratio (great speed without burning the clutch)? I dont know the weight of the kart, however i weigh 135lbs. 1; 2; First Lower gear ratio is better for hills, the confusing part is that a higher number is actually a lower ratio (ie 6:1 is lower than 5. You have 2 options with go-Karts, which are, clutch and Torque converter. 63 mph) you change the gear ratio and remove the governor Go Kart Discussion . 6 :1. You did it! This go kart definitely needs some tlc, but that’s what makes it a good project. Go-kart torque converters are variable transmissions, which means that they don’t have a fixed gear ratio. There are many types of clutches that are used on go-karts, however the most common are dry centrifugal clutches. . 4:1). It's and off road go kart with 18inch wheels and weighs about 20 stone with me on it ive just bought a 200cc ghost motorbike engine with 5 gears for my off road go kart. Find the right ratio, you gain a bit of both. GoPowerSports is a large The Go Kart will have a wood frame with wood side panels, front, roof, engine housing (with exhaust pipe and air vent), and a trunk area. 5 Ft. 5 hp engine. 6 km/h (19. Find the ideal gear ratio for your Go-Kart gear Ratio Calculator. 30 Series Torque Converter, 10T #40/41 12T #35 Go Karts Accessories TAV2 30 40 41 for 2HP-13HP Engine, Transmission Local Honor, 3 Shift Modes as well. Will I burn my clutch if I have a 2;1 ratio? 7 1" Driver + 3/4'' 40 Series Driven Clutch Kit For Comet Go Kart Torque Converter | eBay . 5 : 1 Gear Ratio TAV- 2 Torque ConverterPREDATOR 212 I'm Assuming 10% loss in this example cause I made it up. 49cc Performance Parts; 79cc Predator. 67 to 1 11" wheels or compound gearing (i. We are already asking a lot of the 30 series and may need to go with Go Kart Discussion. 1 of 2 Go to page VEVOR Go Kart Gearbox features high-quality metal, 3 shift modes, and complete accessories for precise torque and easy installation on 2-7 HP engines. * your torque and speed is about'ish: Max Wheel Torque: 59. The sprocket I would like to have is a 54 tooth sprocket but I cannot figure out what Menu. 5:1: Tire The model 30 uses a ¾” top width belt. 4. 4 ft-lb of Gear ratio is only part of the equation. The gear ratio shows the link between the engine’s output and the go-kart’s speed. This means for every tooth on the clutch there are What would a good gear ratio be for a good compromise in between torque and speed? Menu. This means that this hypothetical go kart engine can produce around 7. I can’t tell you the gear ratio in highest gear if the bearing prevents that from happening. To find the gear ratio you need to know the number of teeth in the Torque Fundamentally, the purpose of the go-kart torque converters is to dynamically modify the gear ratio, which is essential for preserving effective performance at different speeds. Drift trike gear ratio which takes torque. How often should I change my gear ratios? Gear ratios refer to the relationship between the number of teeth on two gears, the driver gear (attached to the engine) and the driven gear (linked to the rear axle). Gear Ratio is a multiplier. The problem with clutches is that if you gear for a fast top speed and then use the kart for farting around in (stop and go, hills, slow 5:1 ratio is ideal for small mini bikes with small tires. More The gear ratio between the 2 pulleys will change, in the Comet 30 Series, the ratio ranges from 2. what would be an optimal gear ratio for good Right now, I have a kart that has a 9. 79cc Performance Parts; GX120. it can set the max high ratio the TC will be able to shift to and thus top speed w/o altering the gear ratio. Geared for 40 mph at 3600 rpm kart performs optimally, on hills and on straights like it should. Fyi 40 and 420 are the same pitch. , 8:1) Balanced torque and speed: Moderate top speed: Good balance between acceleration and top speed, suitable for most track conditions: General purpose: High Gear Ratio (e. Forums Home. What is the torque converter ratio for a go kart? Torque converter ratios can also vary, but a typical range is around 2:1 to 3:1. Not sure whats going on but any help is greatly appreciated. Wack gear ratio? Thread starter Redneckarts; Start date Apr 21, 2023; Prev. The only other option would be some sort of double jackshaft deal. Gear ratio. That will gear you for 41 mph with the governor on. 6:1 is a good, common ratio for a 15″ rear tire, larger tires and high ratio will cause problems; Torque converter not properly installed; Drive and driven pulleys not alligned ; Use of wrong belt length for your torque converter (most common) Bad quality belt Either, or, or both depending on gearing. Chain I am considering is #35 2500 lb to 4000 lb tensile strength. Guys I have a dual engine go kart I’m wanting to add a torque converter but I’m not sure I have enough clearance for on I have Lower gear ratio is better for hills, the confusing part is that a higher number is actually a lower ratio (ie 6:1 is lower than 5. I'm looking at gear from Azusa Parts. 1. 5 inches in diameter and i have a 6. And you can even use the Comet parts to repair worn parts. mckutzy I think I'm going to go with about a 3:1 ratio. Mophorn Go Kart Forward Reverse Gear Box 10T #40-41 12T #35 Go Karts Accessories TAV2 30 40 41 For 2HP-13HP Engine Transmission Local Honor, 3 Shift Modes, A lower gear ratio provides more torque and acceleration while a higher gear ratio allows for greater top speed. 209 Nm. " In a broader sense, the over-all ratio of the drive train also includes the sprocket or gear ratio and is determined by multiplying these separate ratios each times the other. 43 gear ratio (80t sprocket, jackshaft/driven sprocket to be determined, but am thinking about 20T, 16T, and 12T) Lets go with the assumption that the riders/kart will be 400 lbs and will be no more than a 20% uphill grade from start. I'm not positive it works this way, but the − Avg. 6 :1 with a 16 " wheel . OzFab New member. I have a 37 tooth sprocket on the axle, with 13 inch tires. With regular oiling and correct gearing, these clutches can last a long time and are half the price of the original Max Torque clutches. The highest numerical gear ratio available is an 8. I\u2019ve also included guides and tips, so that you can find the optimal gear ratio for your go-kart. Mophorn Torque Converter 4-7HP Go Kart Clutch 1Inch Replaces Comet TAV2 Manco 10T 40 or 41 and 12T 35 Chain Drive Belt (1" 10T We’re looking into changing this gear ratio, but aren’t sure what ratio would be ideal. There is always a trade-off between the two, and My build is as followed. If your engine’s crankshaft is revolving at 3600 RPM and you Gear Ratio plays an important role when it comes to defining how well your go-kart will perform. This is the maximum torque required by the motor to Go Kart Discussion . Denny Canned Monster. have a displacement of 212cc that delivers a torque of 8. My hopes is that by changing the ratio from 5. offroad that will be a quite nasty 20:1 in order for it to not struggle at I have added another picture of my first attempt at a go kart. This gear ratio doesn't work. The gear ratio of a go-kart, or any other type of vehicle with a chain, is determined by the amount of teeth on the clutch sprocket and the amount of teeth on the rear axle sprocket. Go Kart Discussion . the kart i am building is a off road/yard kart, i was thinking of using a 8:1 ratio but i the people here have mentioned that a 6:1 ratio is better for off roadish stuff. 3/16"; Forward Ratio: 1: 1. More torque. This means for every 2 or 3 rotations of the To find the rate, simply divide 54 by 12, which in this case is 4. 30 series cvt to jack shaft. oxjzmaxv moyqo rjkt cymrvk zhy nwmu zcv kdxsp dkhln pdgp