Front sprocket change question - Honda RC51 Forum : RC51 Motorcycle Forums
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post #1 of 13 (permalink) Old 02-19-2011, 10:30 AM Thread Starter
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Front sprocket change question

Probably a dumb questions, but I only changed the sprockets and chain once, several years ago and I can't find any info on it in the manual.

Do I need to bleed the clutch and remove the slave cylinder to replace the front sprocket? I'm 99% sure that's how it's done, but want to know for sure before starting. Are there any instructions for th front sprocket change in the manual? If so, what page?

Thnx
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post #2 of 13 (permalink) Old 02-19-2011, 12:32 PM
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There's one short bolt on the left cover that doesn't have to be removed (arrow).
The other 4 are long bolts that hold the cover in place.
Unfortunately, since only one bolt is securing the slave cylinder to the cover, there is a likelihood that air can enter into the system.
So yes, I'd prepare to bleed the system after sprocket replacement.

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post #3 of 13 (permalink) Old 02-20-2011, 06:55 PM Thread Starter
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Thanks! I thought I might have to bleed/drain it first to keep the brake fluid from pouring out when I removed the slave. I'll just pull it off and bleed it after putting it back.
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post #4 of 13 (permalink) Old 02-21-2011, 03:03 AM
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Just did this - all I did was ziptie the clutch lever overnight. Back to normal in the morning.
I was shocked it got so spongy from just removing the thing, not opening up the lines.
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post #5 of 13 (permalink) Old 02-26-2011, 04:00 PM Thread Starter
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Another question - changing to 15/41 sprockets, how many links should be in the chain? Or is there an easy way to know how long it should be with the new sprockets?
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post #6 of 13 (permalink) Old 02-26-2011, 07:15 PM
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I was able to get the rear tire back on, albeit very tightly with NO slack, and went and set the chain slack after.
Looser is better than tighter, I set mine to 1.5"
Don't need to change the chain links.
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post #7 of 13 (permalink) Old 02-26-2011, 11:26 PM Thread Starter
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Thanks for the reply. I had a new chain, and I needed to cut off about half dozen extra links. but figured it out and I'm all set. Now if it would just stop snowing...
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post #8 of 13 (permalink) Old 02-27-2011, 12:12 AM
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Just curious, where is you're chain adjuster set now? Near the front of the gauge or near the rear? What is your wheelbase now in relation to where it was before your sprocket and chain mod?

John, 2000 RC51 #000100

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post #9 of 13 (permalink) Old 02-27-2011, 03:26 AM
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I moved my spacer in about 2 MM's, if were counting.
Still well within healthy chain specs
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post #10 of 13 (permalink) Old 02-27-2011, 10:32 AM
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Quote:
Originally Posted by Unconnected View Post
I moved my spacer in about 2 MM's, if were counting.
Still well within healthy chain specs
So you're wheelbase is almost identical to what it was before, right. Just wondering for reference. Let us know what you think of you're conversion.

John, 2000 RC51 #000100

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