The drive clutches on 340-series torque converters come uncalibrated, so roller kits and spring kits must be ordered separate. Like 20-series converters, the belt and pulleys are symmetrical. These are designed to be faster out of the hole. Dragsters and drag-style go-karts and mini-bikes. The Comet 340-series torque converter system is designed for Jr.
#LIVE AXLE MINI BIKE KIT SERIES#
It is recommended for 2 horsepower to 7 horsepower engines.Ĥ0 Series Torque Converter Kit Comet 340 Series Model Two comes with a #40/41 Chain and a 10 tooth sprocket Two styles are offered Model One comes with a #35 Chain and a 12 tooth sprocket. Most 30-series torque converters are asymmetric, which means one side of the pulley is flat.īoth the driven's and the driver's movable faces and the spring mechanism are on the outboard side of the belt.Īsymmetrical belts are also flat on one side, and have a top width of 3/4".īullet Lines is one of the most popular and lowest cost 30-series converter kits. They are available for either 3/4" or 1" engine shaft size, and work best with 3 to 8 horsepower engines.ĭriven clutches are available in both 6" or 7" diameter, and for either 5/8" or 3/4" bore. The most common torque converter size is the 30-series. They are often used for low speed requirements such as lawn tractors and off-road karts.
The three most common sizes of go kart torque converters are 20 series (light duty), 30 series (medium duty), and 40 series (heavy duty).Ĭheck your engines output shaft diameter, and order the kit to match the chain-size/pitch of your kart's axle sprocket.įor small engines putting out no more than eight horsepower, a 20-series torque converter can be used.ĭriven clutches are available in both 6" or 7" diameter, for either 5/8" or 3/4" shaft diameter.Ī 20 series converter uses a conventional (symmetrical) belt. The main visual difference, aside from the stickers, is that the Comet converters look smoother and refined, whereas the knock-offs look less finished.Īside from complaints that the knock-offs make a clanking noise and the Comet T/C's are practically silent, I have not heard of anything terrible about the Chinese-made torque converters.īuying a complete torque converter kit gives you everything you need engine mount plate, jack shaft with sprocket, drive and driven clutch pulleys, belt, mounting hardware, and instructions. The driven pulley can be swapped out to a different size, giving you the option to change gear ratios.īy having two or three different pulleys you can best adapt your kart to different riding scenarios. On small engine torque converters, the front pulley is called the driver, and the rear pulley is called the driven. If you plan to use your kart for off-roading, live axle with torque converter is the way to go. Having a torque converter is ideal for climbing hills and inclines.Ī centrifugal clutch does not work well with a live axle, and under constant use, will burn out. In sand or loose dirt, where a single wheel would often spin out, a live axle has both wheels turning at the same time, giving you twice the traction.
Off-road karts work best with two wheel drive. This allows better steering and cornering.įor pavement and hard-packed dirt, single wheel drive with a centrifugal clutch works satisfactory. Since power is applied to one wheel only, the other rear wheel is left to spin, or "free wheel". This means that the rear axle does not turn and the rear wheels spin freely. The most common for yard karts is the fixed, or "dead" axle.Ī single wheel drive runs a chain from the engine clutch straight to the drive wheel, which has a sprocket mounted directly to it. Go karts can use a variety of rear axle types.
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