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Post by Walms on Jul 31, 2010 8:04:21 GMT -5
I said that after looking at the sprocket with no reading glasses on... Wipe some Vaseline on your eyes and take a look at the pic again... ;D ;D ;D
Regarding the tooth wear on the side... These cush drives on the H1's seem to have a ton of slop. I verified with Ian's B that the slop is similar. I'm guessing this slop would either cause the sprocket to either self align or cause the sprocket to go cockeyed under heavy load... Maybe both, not sure.
I verified the alignment on my sprockets with a small straight edge clamped to the front sprocket and taped a thread to one edge and it looked good. I guess I will move the rear wheel over a wee bit considering the wear but it will be hit and miss. 1.5mm seems like a fair move.
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Post by Walms on Aug 6, 2012 9:22:43 GMT -5
LC, you wouldn't have the part number for the rear sprocket you ordered for me would you? I need another ASAP Was PBI the company that wouldn't ship USPS?
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Post by Walms on Aug 6, 2012 9:50:34 GMT -5
Ok back to their site and see that I can choose 520 and tooth count... I assume 76 kh500 is same as H1...
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Post by Jim on Aug 6, 2012 10:22:27 GMT -5
Ordinary anodizing will add very little wear resistance, since it's very thin and wears through quickly.
520 sprockets are 2/3 as wide on the tooth face as 530 sprockets (sprocket material 1/4" thick vs. 3/8" thick), and therefore have 1.5 times the pressure on them. The more pressure a tooth face has on it, the harder it needs to be to resist wear and deformation.
The 530 PBI aluminum rear sprocket on my H2 has about 1,000 miles on it, and I can see no wear except for some polishing of the machining marks. It is not anodized, but I keep the X-ring chain lubed.
My previous aluminum sprocket was a 640 (!) with a 1/2" wide face. After at least 20,000 miles it is only slightly worn.
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Post by Walms on Aug 6, 2012 10:27:06 GMT -5
As it turns out, I had a broken roller on my chain that created the premature wear... This time around I opted for the DID 520 x-ring chain and the PBI 47 tooth sprocket... Now I just keep my fingers crossed that they come in before the 17th!!! (RB's bash)
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Post by lc on Aug 6, 2012 11:55:25 GMT -5
Sounds like you got it sorted Walms. As you found out PBI DOES offer shipping by US postal service.
Sprocket Specialists refused to ship by anything but UPS/Fed X, hence with the brokerage gouging it sealed the deal with PBI.
Good choice on a chain. That's what I run and got it from Pete's Superbike.
Regarding chain alignment:
Set it with the straight edges and run it briefly. Monitor the grease marks on the sides of the rear sprocket and adjust (shim sprocket(s) accordingly until side marks/wear is equal during service.
J
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