DRIVE ROLLERS

We now offer 3 styles of drive rollers to accommodate different rider weights, different desired power, or different desired roller surfaces. Drive rollers are quick and easy to change using standard tools.

As far as the diameter of the drive roller in relation to power and speed it goes like this: the smaller the diameter of the roller the more hill climbing ability you will have (low end power), but less top speed. As you increase the diameter of the drive roller you will have less low end power but more top speed. For this type of application and the power of the engines used on this kit, drive rollers with a diameter between 1" and 1.5" should be used. Any smaller diameter drive roller than 1.00" may have too much power resulting in roller slippage and tire damage, and any larger diameter drive roller than 1.50" will result in not enough power.

A = 1.00" diameter steel drive roller with knurled surface. Secured to shaft with set screws.

B = 1.25" diameter steel drive roller with one-way self locking bearing, knurled surface.

C = 1.50" diameter urethane drive roller with smooth surface. Secured to shaft with set screws.

Our complete kit comes installed with our 1.25" diameter steel drive roller with one-way self locking bearing. It has a diamond knurled surface for a sure grip to the tire without excessive tire wear. For more power or if you are a heavier rider you can choose our 1.00" diameter standard style steel drive roller that also has a diamond knurled surface. This roller does not have a one-way bearing, it is locked onto the shaft with set screws. We also offer a 1.5" diameter standard style rubber drive roller that has a smooth surface, it is also locked onto the shaft with set screws. This rubber roller is great for lighter riders or if you don't mind pedaling a bit to get going if you are a heavier rider. The 1.5" diameter will result in the highest speed but you will sacrifice power. The smooth surface of the rubber roller provides a sure grip to the tire and result in almost no tire wear.

For most riders and conditions the 1.25" diameter "one-way bearing" drive roller is the preferred choice. As you get more familiar with your kit after several miles of riding you may decide a different diameter or style roller may better suit your riding terrain or power/speed desires. The style of roller that may be best for you also depends on the power of your engine and the weight of the rider.

Underneath view of engine channel showing drive assembly with 1.25" diameter "one-way bearing, self locking" steel drive roller.

Underneath view of engine channel showing drive assembly with 1.00" diameter set screw style steel drive roller.

Underneath view of engine channel showing drive assembly with 1.50" diameter set screw style rubber drive roller.