Hi guys, I've got a 15T front sprocket for my RR7 and going to fit it this weekend. I'm not a DIY god but can follow instructions..sometimes... Anyway... once i've removed the cover etc on that side is it possible to slide the front sprocket off, take the chain off it, put the chain on the new one and slide that back on without slackening the chain off? I figure there is surely a bit of slack in the rear chain anyway so should be possible? I realise i'd then have to check the chain slack after... Sorry if it's a stupid question, just trying to make my life easier! Also, does it need to be done on a rear paddock stand? TIA!
Just slacken the chain as much as possible by winding the adjusters as far in as they'll go,will make things a bit easier. I don't think there's enough sideways movement on the chain to slide sprocket off with chain on,never mind getting it back on a tensioned chain.
Doh, sounds like this is going to be a pain! Does the chain definitely need to come off the rear sprocket too? Cheers guys, i'm sure i'll be back with more questions
Doh, sounds like this is going to be a pain! Does the chain definitely need to come off the rear sprocket too? Cheers guys, i'm sure i'll be back with more questions
Unless you have an air gun i'd leave the chain on the rear sprocket until you crack the bolt holding the front sprocket on. Leave the bike in neutral, put a long bar through, (wrap the bar in something to protect swing arm) the back wheel then rotate the wheel so it stops against the swingarm and the bar. Use a breaker bar to crack the front sprocket nut off. Doing it that way will protect your gears from excessive wear. You'll need to loosen the back wheel and chain adjusters to get the slack you need to get the chain off the front sprocket after you have loosened the nut. Putting it back on is simply the reverse of the above really. The front sprocket nut should be tightened to 54nm.
Crack the big sprocket nut while the chain is still on and tight, with the bike in gear and the back brake on.. Slack the chain right off and see how much play you have, if you need more then just lift it off the rear sprocket. It pretty easy mate !
Cool. Cheers guys, i'll give it a go over the weekend and report back, hopefully not with a 'HELP i've broken my bike' thread, lol!
Hijacking - just trying to remove my front sprocket and it wont budge even with an impact driver. Its not reverse thread by any chance?
A bit of 2" x 2" through the back wheel and 200lbs of persuasion did the trick. I'm sure it was on tighter than the recommended torque value!!!
