Refer to: https://andover-norton.co.uk/en/shop-drawing/512/clutch-road-models-manxThank you both. I’ve done the chain tension and visual inspection. I’ve replaced the primary chain but not clutch center and rollers. Would they be impacted by increased RPMs?
Thank you both. I’ve done the chain tension and visual inspection. I’ve replaced the primary chain but not clutch center and rollers. Would they be impacted by increased RPMs?
Hi Knut,+1 to what Slick writes. Additionally, it is not uncommen for main shafts to be bent. This would of course lead to a lateral (in-out) movement of the chain.
Another cause for chain virbration is stiff links due to misalignment, lack of lubrication, or corrosion.
-Knut
IMO you can't take this for granted unless you remove the clutch and check g/box mainshaft runout with a clock gauge, because if you have rubber shocks inside the clutch, these can cause sprocket runout. . . . . .Hi Knut,
"to be bent" means that the main shaft turns eccentric?.
Piero
Yes, in the sense that for the cantilever part, at a given cross-section the shaft center will rotate around the ideal straight axis shaft center at a radius 'r'. This will also result in an angular misalignment of the clutch hub which will cause the chain to vibrate in-out and up-down.Hi Knut,
"to be bent" means that the main shaft turns eccentric?.
Piero
I beg to differ. The clutch hub is supported by the roller bearing, whose inner bearing race is a sliding fit on the clutch shock centre, which in turn is a sliding fit on the mainshaft.IMO you can't take this for granted unless you remove the clutch and check g/box mainshaft runout with a clock gauge, because if you have rubber shocks inside the clutch, these can cause sprocket runout. . . . . .