Can I install small pulleys on my CR?

[texasroadranger]

I have stock belt pulleys on my CR. Im looking to see what the smallest rear wheel belt pulley I can use is and what beltdrive will be needed. Is the front pulley on a CR the same for ALL the buells? Basically, Im looking for the smallest front pulley and smallest rear pulley for my CR and what beltdrive Im gonna need for 90% highway driving. Any help is greatly appreciated. ML

 

[texasroadranger]

Im not sure if anyone knows if the 1125R and 1125CR use the same type of drivebelt pulley? I think the R is a 27t. Is this correct? Also I found a 65t rear drivebelt pulley for a xb9sx, anyone know if it will bolt up to a CR wheel, and if it could be used? Any tech advise is greatly appreciated. ML

 

[Red93stang]

The 65t pulley is designed to turn the opposite direction than a 1125 would turn. Dont know if that would matter??? The 1125R uses a 70t rear pulley with a 1/2 inch shorter swing arm. Same front pulley for 1125CR and R.

 

[texasroadranger]

Oh, OK. Damn, I was hoping to swap-out a CR rear pulley and CR belt for an R pulley and belt, AND keep my 1125R belt I still have. Thats out the window, thanks alot bud.

 

[poinographer]

Hmmm. Maybe the pulley tensioner could take up (or give up) the slack when going from the CR to R? The half-inch difference in swing arm length might be close enough to being perfectly offset by the 5-tooth difference...

 

[Red93stang]

Hmmm. Maybe the pulley tensioner could take up (or give up) the slack when going from the CR to R? The half-inch difference in swing arm length might be close enough to being perfectly offset by the 5-tooth difference...

It's been done before. I have seen guys make custom idler pulleys (bigger) to comp for the tension lose. I didn't have the skills to make one. I went the other way and did CR gearing on my R. I did the swingarm swap.

 

[texasroadranger]

Oh,ok. Wow, I don't think I want to go through all that trouble. I was just hoping to get better fuel mileage on interstate. Im averaging around 33mpg now and its funny I see other bikes getting 50mpg+. [confused][mad]

 

[Red93stang]

With R gearing I got 35 mpg. It took a afternoon or 3 1/2 hours or so to change the swingarm and all associated parts. Not that big of a deal.

 

[John422]

The the r is 1/2 longer?!

 

[John422]

And belts can be made I don't see why you couldn't just a make a custom length belt for a smaller rear pulley keep the front the same. And ya any xb will be backwards cause there drive line is on the ride side not the left. But I don't know if that matters I wouldn't think it is. And at the wheels are interchange able between buell besides the TT and uly. So I know a xb pulley would mount

 

[Red93stang]

The the r is 1/2 longer?!

No, the R is a 1/2 shorter. The CR uses a 1/2 longer swingarm. The tensioner bracket and left peg bracket are different as well.

 

[texasroadranger]

Sounds like too much to me. I do appreciate the info though. [up][smirk]