| Author | Message | ||
     Puzzled |
Anyone have a little more indepth idea as to what that is? I understand it is the front 27 tooth pulley. I suspect based on the term "compensating" that it is set up to act like a compensating nut on an HD or similar to a cush drive on a Import sportbike/Newer Harley Bagger. When one goes to a chain drive this function is gone. Any idea how this would affect the belt if it were gone? | ||
| Puzzled |
Giving some thought to it the XB's are non cushioned (that I know of) as are Harley's. | ||
| Dannybuell |
Neither of which comes anywhere near the 1125 in terms of gearing and performance. | ||
| Xnoahx |
Twin Cams put out more torque than the 1125 and weight a hell of a lot more. Seems like that would stress components more | ||
| Puzzled |
Xnoahx, your thinking along the same lines as I am. My TP 124" makes a LOT more power than my Buell and does not have a compensating anything anywhere. It is all direct drive. On the flip side my Softail and Bagger both have front compensating nuts. I would think that a compensating assembly would soften the initial blow to the the drive line when the clutch is engaged. A direct drive will hit harder increasing the chance of broken belts/chains. Than again quality components will take a lot of power. Just thinking out loud here... I'm going to take (cut) a front pulley apart later to see what makes it tick (this was planned)! | ||
| Froggy |
 I am still looking for it, there was a video a while back of a Rotax engineer discussing the 1125 and talking about the special front pulley among other things. (Message edited by froggy on August 10, 2010) | ||
| Puzzled |
That's cool.  | ||
| Dannybuell |
At $400+ from E-B-R for a take off I sure they be rebuilt. | ||
| Boogiman1981 |
makes me wonder how much they are new being as though they are $485 at E-B-R | ||
| Froggy |
$1010.64 (Message edited by froggy on August 10, 2010) | ||
| Blk09r |
Holy crap! I think I'd spend $2k for the chain conversion kit before I'd spend $1K for the pulley. | ||
| Hootowl |
That's the idler assembly. Does the pulley come with that? | ||
| Hootowl |
The compensated drive sprocket I mean, not the pulley. | ||
| Xnoahx |
That blows my mind that it is over $1000 for that. The rubber isolators are $71 for the set (Message edited by xnoahx on August 10, 2010) | ||
| Aj2010 |
Oh boy ..... I feel good now. I bought an 08 flywheel on E-Bay and figured I'd pick up the pulley from the same seller at the same time .... I think I paid $18.95 for the pulley 'cause I thought it might be expensive and eventually the teeth would wear. OK, good deal. | ||
| Puzzled |
To seperate the two halves of the compensating sprocket the ring that keeps the belt from walking has to be slid down.  | ||
| Puzzled |
This is what you will find inside, the equivalent of a cush drive. On mine all of the rubbers were broke.  | ||
| Puzzled |
 | ||
| Boogiman1981 |
so that's where they hid the flux capacitor. JEEZE man $1k for that seems a bit on the steep side. anybody know what about it makes it worth a grand? | ||
| D_adams |
That accomplishes the same thing as the rubber isolators in the rear wheel/sprocket on most japanese bikes. Might make the wheel a little lighter overall, but not by much. Mike, what made you decide to take yours apart? Was it having problems of some sort? | ||
| Puzzled |
I ordered a front trans pulley as well as 3 different tooth pulley stocks. My intentions are to make a "Quick change" front pulley. I will make 27, 26 and 25 tooth setups. The 27 will give me stock R gearing while the 26 will put me in between the R and CR gearing and the 25 will get me real close to the CR gearing. | ||
| Puzzled |
  | ||
| Puzzled |
Heavy! ..and this is rotating mass.  | ||
| Puzzled |
I used a cut-off wheel to remove the lugs that held the cush drive. The material is hardened but not to the point where it could not be cut.  | ||
| Puzzled |
Turning down the diameter which will serve as the outside retaining ring for the new pulley.   | ||
| Puzzled |
Finished that and now on to cleaning up where I cut the lugs off.  | ||
| Puzzled |
A few passes to insure that the surface was flat and square to the outside lip.   | ||
| Puzzled |
The pulleys were cut to match the original width of the compensating sprocket.  As you can see there is a difference in diameter from the original center hub and the pulley center hole. There is also a height difference from the mounting flange on the pulley stock to the original cut up piece of compensating sprocket.   | ||
| Puzzled |
Turning down a piece of stock to make the spacer needed to close up all of the differences.....   | ||
| Puzzled |
The spacer dubbed the "retaining ring".  |
