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Thread: rc51 vs 1125r
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Old 11-02-2009, 03:19 PM
PBMW PBMW is offline
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Quote:
Originally Posted by Smokey74 View Post
The shoulder of the piston is very short, I believe they're going for less weight but sacrificing reliability. I don't see any good coming of it either. Values of new and used rr1ks have been severely impacted. I'm seeing used 06's & 07's selling for more than 08's. With good reason IMO..


The actual reason for using one compression ring instead of two is to shorten the distance ftom the wrist pin to the top of the piston. That way they can use a longer rod which allows more legerage on the crank...more midrange power. It's an old trick that works very well in race motors. Problem is...this bike is the basis for a race bike in a number of series. But it's also used on the streets. Honda went for the better race bike over the better street bike.
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