November 5, 20196 yr I've just done a full rebuild and about 8 hours riding. I'm pretty sure it's been making the sound since the rebuild. When the clutch lever is pulled the engine sounds normal. As I release and the bike starts to pull I hear a whirring. It sounds a bit like an electric motor. Which increases in pitch according to the revs. I'm using putoline gear oil. Or could it be the clutch release bearing? Oil type? Thanks for any advice
November 5, 20196 yr My 270 used to make a whirring noise too - I think it's normal and my clutch was all fine. Mine only did it when you selected a gear - quiet in neutral. It became a bit quieter as things warmed up. A few other Rev3s in the club did a similar thing. If that's the case with yours, and it's all working nicely, I think you'll be good to carry on.
November 5, 20196 yr My mate used to joke that thats how you could tell you had a good one. Reasonably common back in the day when new
November 5, 20196 yr Author 1 minute ago, faussy said: My mate used to joke that thats how you could tell you had a good one. Reasonably common back in the day when new Haha thanks. I'll save this post Incase I sell it.
November 5, 20196 yr That's not normal iv'e had 5 rev 3's never heard the noise you are describing,.and rebuilt 2 to replace main bearings.
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