Anyone ever hear or do this? I was wondering if it's possible to do or if the belt would jump ribs? I think I have an 8 or 10 rib belt and a 12 rib pulley. I need some info on what to do with this. Should I spend the money on the correct pullies or would running a smaller ribbed belt on a larger ribbed pulley be fine?

TIA,
Wade

 

I had two 4 ribs on a 8 rib setup for a while....worked fine...I just made sure the two belts where from the same batch...

it will work...it should not jump....but belt slip my be a problem

 

It should work just fine.

 

Thanks guys.

 

Yep, it works....I'm running a 12 rib crank pulley with a 8 rib belt and blower pulley. No problems at all.

 

So what is the preference? 8 rib or 12 rib pulley system? That's my dilema. 14psi is the target for my application.

Thanks!

 

The more ribs the better....less chance of having belt slip problems.

 

Do the larger ribbed pullies put more stress on the crank snout?

 

Good question! Didn't even think about that. Maybe Mark or someone else can chime in on that.

 

In theory the more ribs the less stress you will have because the adjustment doesn't have to be so stout. With spring loaded idlers the loads are safe for bearing life, but the increased surface area of the wider belt is obviously an advantage with high boost, precisely why people step up to the wider drive.

 

Thanks Mark!