Keeping the correct chain tension will also help with longevity. (not to mention properly lubed)
P.S. - I've never heard of an aluminium sprocket.(surely they are an alloy) - but then, I've never looked. I had a plastic/fibreglass type once on a small bike once. (GT185) It was fine 'till I tightenned the chain up too much one day and ground the teeth off just like the photo above.
P.S. - I've never heard of an aluminium sprocket.(surely they are an alloy) - but then, I've never looked. I had a plastic/fibreglass type once on a small bike once. (GT185) It was fine 'till I tightenned the chain up too much one day and ground the teeth off just like the photo above.
![[Image: dbusasml.jpg]](http://i269.photobucket.com/albums/jj45/DBUSA/dbusasml.jpg)
I don't want a pickle . . .