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'02 ST, How to replace the front sprocket?

1K views 8 replies 4 participants last post by  stevecro 
#1 ·
Ok, I just got back into Texas and am ready to change out my front sprocket with the 18t sprocket. I looked at it a little while ago and it would seem I would either need to break the chain link or loosen the chain enough to get the front sprocket off. Before I go and try and do either of those, I was wondering how yall went about replacing that front sprocket? Did yall end up having to break the chain or were you able to loosen the chain enough via the spanner tool in order to get enough slack in the chain to get it off the front sprocket? At first glance, it doesn't look like the spanner tool would be able to loosen enough slack to remove the chain, but I could easily be wrong. Any tips would be greatly appreciated!

Thanks!
Robert
 
#2 ·
no need to cut or break anything. ( unless you are tossing the chain anyway)

I removed the cover from the sprocket ( 8mm bolts)

Then there is a tab that keeps the nut from spinning off the socket ( or so they say) I bent that back to flat.

I then took a 36mm socket on an air ratchet ( zip zip its Off)

Or if you use a breaker bar: put bike in gear and have someone hold the rear brake ( I did it by myself ok by standing on rear brake side and reaching over the bike to move breaker bar)

after loosening the nut, I used the spanner tool to loosen all he slack out of the chain,
Then just pull on the sprocket and slide it off the spline, and you can roll it out from under the chain.
reverse the process, ensure the tab is bent back, I'd take the time to clean out all the crud from the sprocket cover as well.
 
#4 ·
Just did it yesterday. There is plenty of slack. I slipped the chain off the rear sprocket which gives you all the slack you will ever need to get the front sprocket off. Once on the front, the chain will feed back on to the rear by rotating the rear tire slowly.
 
#6 ·
exactly as Regulator said, except I found an old 1and7/16 socket that did the job (that's 36.5mm)


feels good, doesn't it?



[ This message was edited by: stevecro on 2006-04-09 17:18 ]
 
#7 ·
its the best bang for the buck, I switched bact to 19 because I'm getting ready to ride back to georgia. and I tell you riding around town now I can seriously feel the difference and the ridability was so much better with 18T.

I'm almost wondering what a 18-45 combo would be like ( you know just for around town :)
 
#9 ·
Come May, I'm doing the same 2800kms Adelaide-Sydney round trip I did last October with the 19T front.
I'll have the 18T this time and compare fuel consumption over the trip. I figure that's reasonably scientific since it's same rider, same course, same speeds/habits.

But you're right, Panthers_Den, the sprocket change AND tyre change to Michelin Powers makes it a different bike.

And get this guys! My wife will be flying there and back courtesy of her company, so we'll do Adelaide and the Adelaide Hills on the bike together(which is fine) but I'll have it all to myself for the trip across and back (when a pillion would really cramp my style)......does it get better than that? :-D
 
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