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Changing front sprocket - should the shaft spin?
- Thread starter 3ntune
- Start date
IdahoMtnSpyder
Active member
Did you run the engine high enough RPM to engage the clutch?
Snoking1127
Well-known member
Confused here! I thought the clutch was hydraulic and would not be engaged if it is a SE6 transmission without the engine running. I thought you needed the belt on and parking brake set to work on the front pulley nut? At least that is how I did mine for the rear tire change.
after getting the belt off the bike, i pulled the front sprocket off to change,while sproket was off I started the bike and put it in 1st gear,I heard it go in gear but the shaft does not lock in,it just spins by hand, I would think that in gear the shaft for sproket should move in the direction of the gear chosen,so thinking the trans shaft is broken
IdahoMtnSpyder
Active member
Again, did you throttle up the engine fast enough for the clutch to engage? It does not engage at low engine speeds so the trans shaft is free to turn by hand.
So as ddjim inferred, what you experienced there ^^ is EXACTLY what should happen with a 'still unbroken' shaft; altho on the SE6's it's not strictly 'revs' that make the clutch engage, oil pressure is involved too, due to the SE6's oil pressure activated hydraulic clutch - unlike the SE5's, where it IS strictly 'revs', and a few more'n just 1100 rpm at that! The SE5's Centrifugal Clutches don't lock up fully until the revs get up over 3000 rpm - usually about 3300 rpm! :shocked:
Still'n all 3ntune, what you're describing does sound like it was JUST the sprocket spinning on the shaft - the gears will be engaged & the gearbox contents will actually spin, but until the clutch engages as the revs and oil pressure go up, the output shaft that carries the front sprocket will be dis-engaged and free-wheel! So unless you were revving the rings out of it, that 'shaft not spinning' thing you mention above is what you should expect, and NOT an indication that the shaft is broken.
But is there anything else going on that makes you think that it might be?? :dontknow:
Last edited:
PMK
Active member
Did you try accomplishing this with the engine running, or spinning the shaft by hand and selecting gears via the shift shaft?
By hand, you can compare neutral to any other gear. Seems unlikely you broke a gearbox shaft, but anything is possible.
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