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Broken Teeth



Not in my head, but on my rear sprocket. It's an aluminum job. Never
seen it before. Any ideas?
The only time I've seen that before was on a friend's Duc 900ss with
aluminum sprockets. I use steel for the same reasons stated by Brutus and
Inlaw Biker.

(late to the conversation, I know... I've been busy lately)


I also notice a small opening on the inner race of the bearing. Is that
where you're suppose to shoot grease? If so, what kind of grease and
what kind of adapter does one use to get it in those tiny openings.
When I orginally got my bike the rear sproket had been replaced with an hardened aluminum one. Two
extra teeth and by the scale a full 1lb lighter. At about 10k the sproket was shot along with the
chain and the steel drive spoket! I decided to sacrifice the weight savings and replaced the
sprocket with a steel one with the extra 2 teeth along with a new front sprocket and chain. 10k
latter and no visible wear....

I clean the chain with kerosene, then dab some 90 weight gear oil on a rag and apply it to the
chain.
Make sure you don't apply to much and there will be very little scatter getting onto the wheel. It
takes no more then 5 minutes of labor about every 300 miles. Maybe a few extra minutes getting the
bike up on the rear stand and it's also a nice opportunity to clean and inspect the rest of the bike

You should be able to find a steel sproket with what ever # of teeth you want...
What days are you going to run PIR Brutus?
I am thinking of 5-31 with Nesba...
I went to the motocorsa page and saw no dates.
This is not necessarily true - it depends on the make and model. With the
Daytona, the ONLY options for non-stock tooth numbers were aluminum. The
aluminum sprockets are much easier and cheaper to manufacture, and custom
sizes are frequently made to order.