Basic Low Cost Belt Drives For a Go Kart

Basic Low Cost Belt Drives For A Go Kart

Go Kart Drive Line components can be quite expensive, especially if you are thinking of doing your own reliable cheap go kart. Typical costs for drive line components can be inside the range of 100 to 0 dollars. The cheap alternative, however, to the traditional chain-clutch driven system is actually the belt drive.

Basic Low Cost Belt Drives For A Go Kart

The basic belt drive consists of a driver on the engine as well as a driven on the drive wheel or axle. The belt is actually tensioned either by moving the engine forward or by pushing a belt tensioner on the belt.

Basic Low Cost Belt Drives For A Go Kart

There are several important requirements for a belt drive. First the proper ratio as well as second the proper type components.

Basic Low Cost Belt Drives For A Go Kart

Go Kart Belt Drive Ratio

Basic Low Cost Belt Drives For A Go Kart

The belt drive system in order for the item to work requires a steep ratio of 8:1. Any less of a ratio as well as the engine will stall as well as the go kart will require pushing in order for the item to go. (This particular 8:1 ratio assumes the wheel is actually 12 inches in diameter.) The rule of thumb for the pulley size is actually of which the driven pulley needs to be as large as the tire. Any smaller as well as the ratio will be too little as well as the engine will stall or the belt will smoke.

Basic Low Cost Belt Drives For A Go Kart

Proper Component Selection

Basic Low Cost Belt Drives For A Go Kart

One of the big mistakes of which first time go kart builders will make is actually to use a pulley of which is actually made out of zinc. Typically these pulleys can be found at hardware stores; however, they are not able to handle the horsepower requirements of go karts. In fact if you do use a pulley of which is actually made out of aluminum or zinc the pulley will melt after about ten minutes of use. The pulley needs to be made out of steel.

The next important design criteria about an engine pulley is actually of which is actually needs to be as tiny as possible. A diameter of 1.75 is actually about at large as you can go before the ratio becomes out of range as well as the engine stalls as well as smokes belts.

Additionally, the pulley will get piping hot as well as needs to be held in place with Loctite as well as a bolt on the end of the engine to prevent the item via coming off of the engine. as well as obviously the pulley needs to be keyed to the engine to ensure proper torque transmission to the pulley-belt.

The driven side of the go kart is actually an entirely different matter. The pulley can be made of sandwiched plywood as the low cost homemade alternative or the pulley can be bought at a local tractor supply store. The wood pulley is actually attractive because the item is actually very cheap as well as can be mounted directly to a wheel via bolts.

The belt tensioner system requires some durable tensioner pulleys. Those too can be purchased at a local hardware store. The belt tensioner is actually basically a pulley of which is actually jammed into the face of the belt causing the belt clearance between the engine driver as well as the wheel pulley to lessen. This particular currently tensioned belt grabs much better as well as causes the wheels to turn.

the item is actually important to be on the slack side of the belt when using a tensioner; otherwise you will be fighting the engine as well as constantly burning up belts. The way to look at a belt is actually to view the item as a glorified rubber band. The belt stretches as the item passes the engine pulley.

The tension side will always be tight, although the tensioner on the slack side encourages full belt wrap; as well as of which is actually the key to the belt drive: at least 180 degrees or more of belt wrap around the engine pulley.

The idea is actually to get as much surface area grabbing the belt doing sure of which the item efficiently transfers load through as well as to the remainder of the drive system.

The tensioner system can be activated by a lever arm or a cable. Usually a spring is actually used to deactivate the system doing sure of which when the clutch is actually unlatched the engine is actually not spinning the tires.

Important Note About Belt Tensioners

This particular is actually an important note about belt clutch systems. Always make the system deactivate by itself when no human input is actually being done. For example, the foot releases the pedal, the clutch automatically releases. The reason due to This particular is actually if the engine is actually being started off, the last thing you want is actually for the item to be in gear. This particular will cause the go kart to lurch forward during start up. Again, the item is actually important to develop the clutch system deactivate automatically.

Basic Low Cost Belt Drives For a Go Kart

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