engine type

[Marty1955]

Howdy, I'm trying to find out what a particular engine style is called. Is there an engine that has a drive belt on both sides of the block, so that there is a drive belt going to both sides of the rear wheel. Very new to bikes and engines. Trying to design a chopper of my own. thanks in advance for your help. Any website with a photo of this type engine would be appreciated.

[Johnj]

Two drive belts would be called dual drive belts. I'm pretty sure I've seen it done on one of those bike building shows on the TV.

[mydlyfkryzis]

Howdy, I'm trying to find out what a particular engine style is called. Is there an engine that has a drive belt on both sides of the block, so that there is a drive belt going to both sides of the rear wheel. Very new to bikes and engines. Trying to design a chopper of my own. thanks in advance for your help. Any website with a photo of this type engine would be appreciated.

why would you want to do that?

Some Harley type Vtwins with separate transmissions have a "Primary Drive Belt" on one side (Connects Engine crank to Transmission input) and then a belt on the other side, connecting the output shaft of the trans to the wheel sprocket with a toothed belt.

Is that what you may of saw?

I've never seen a bike with 2 belt, 2 chains or 2 drive shafts to the same wheel.

[slimcolo]

I saw a old Honda 90 with two chains going to different size sprockets on the wheel. Also had a chain going from trans to a shiftable box mounted on swingarm. Both drive chains came from this box. This gave HI/LOW capability to the older 90s before Honda came out with HI/LOW

[mydlyfkryzis]

I saw a old Honda 90 with two chains going to different size sprockets on the wheel. Also had a chain going from trans to a shiftable box mounted on swingarm. Both drive chains came from this box. This gave HI/LOW capability to the older 90s before Honda came out with HI/LOW

But not to each side of the wheel.

Still, 2 chains as the OP described is very unusual.

[thag]

I saw a old Honda 90 with two chains going to different size sprockets on the wheel. Also had a chain going from trans to a shiftable box mounted on swingarm. Both drive chains came from this box. This gave HI/LOW capability to the older 90s before Honda came out with HI/LOW

I had a pushrod 90 in the 60's, and it used a sprocket "overlay" that bolted on the original rear sprocket, then had a small piece of chain that went on to make up the difference. The earliest OHC bikes had the same thing i believe, then the later ones came out with the selector built into the transmission, and turned with a wrench. i've never seen anything like you describe, but i could easily believe it was someone's experiment to keep from having to install and remove the overlay.