Sprocket Selection - Material & Ratios

[junior varsity]

First post updated to show picture I mentioned, which shows excessive wear on the 'other' teeth.

I discovered this where when pulling the rear axle out and loosening everything up to put in some Motorize.de billet aluminum axle adjusters for the M900/888/851 aluminum swingarm (VERY NICE), and shipping the 17mm rear axle off to TPO for measurements (so we can get a lightweight version available hopefully). The fine folks at Yoyodyne did not care to sell me a 17mm Ti rear axle as shown in their catalog when I called inquiring about brake seals (the axle listing says 'call for price and availability', but also lists it at $225... so I called and asked about pricing and availability)

As far as the wear goes, I had been monitoring it regularly while doing my post-ride chain clean 'n' lube, but I must admit, the change from negligible wear to lots of wear was rather abrupt (I clean n lube approx. every 500 mi).   Chain is ERV3 520, and I'm still very happy with it. So happy I bought another one to put on the fixxer upper M900.

I ordered up 39T Driven hybrid sprocket this time so I can enjoy the life of the steel sprocket. Price doesn't seem that much more than a standard DSS Monster sprocket. (Its like $15 more? By my math, that's one nice pizza that that I shouldn't eat anyhow left uneaten and I'm there.)