replacing a chipped sprocket on a hyperglide casette?

[andrew_s]

Bloody Hell Andrew... moths??

It was on my work bike, and I hadn't changed gear for 4 or 5 years. The rear mech had seized up so I couldn't. The route was flat enough that I didn't really need to do anything about it, so I didn't until it stopped working. That's what I found.

 

[bobg]

How new is the wheel/free hub ????

Errr ... not very ... it's new to me though
I figured that if the free hub didnt slip when running on all the other sprockets why do it on the 15? Am I missing something Fossy? BTW it slipped when using downtube shifters too ( they're new bar end now )

 

[bobg]

It was on my work bike, and I hadn't changed gear for 4 or 5 years. .

 

[andrew_s]

At least it provoked me into getting a new work bike. I can't change gear on that either.

 

[bobg]

Just in case anybody ever encounters this problem ... new cassette came today and lo and behold no slipping. I compared the new 15 tooth sprocket with the old one and as far as I could see it looked identical apart from some very slight wear.You were correct Chris, the sharks tooth shaped cutaway wasnt a chip so the LBS got it wrong which is why filing it off made no difference. It was clearly damaged in some way but I really cant see where especially as the chain was engaged with 12 or so teeth at all times ? The moral being when every other possibily has been dismissed. what's left must be the problem. Thanks to all for the advice , now if it ever stops raining I can go for a ride........

 

[fossyant]

now if it ever stops raining I can go for a ride........

Think you'll have a big wait then - just get out there !!

 

[bobg]

Think you'll have a big wait then - just get out there !!

Got fed up with waiting .... and went. wonderful, one of those days when it was effortless, tried out first ever helmet and mp3 player... note... dont sing along to White Stripes while waiting at lights