My 2A Pandora's box continues to provide hours of pleasure...
Checking all gears before rebuild I note that the main bearing slips easily onto the Sleeve gear. Turn the gear upside down and it will fall off! The book expects this to be drifted into place?
When I fit the bearing to the sleeve gear in my hand and spin the bearing up with an air line, the inner annulus can clearly be seen rotating on the sleeve gear.
The bearing has a bit of vibration on it so is being replaced, but I doubt whether that would solve the sleeve gear interface problem? I have measured the sleeve gear diameter where the bearing fits and it's 1.247". Does that mean anything to anybody? The inside diameter of the bearing inner annulus is the same 1.247, but the digital meter will occasionally allow 1.2475!
Can this fit issue be addressed by loctite - given that a new sleeve gear is about £100?
The new bearing will resto…
- Log in to post comments
I agree with John, in fact…
I agree with John, in fact I'm sure that the sleeve gear does not need to be drifted but should be a push fit. When the final drive sprocket nut is tightened up that should be enough to hold it, and you can check that before going any further with the assembly. I probably wouldn't bother with loctite.
- Log in to post comments
Previously Dave Broadbent…
Previously Dave Broadbent wrote:
Thank you chaps, advice much appreciated!
I think the cost of a suitable bearing from RGM is about 30.00 inc. VAT. Probably cheaper from a bearing factor.
- Log in to post comments
The sleeve gear bearings a…
The sleeve gear bearings are not available from bearing factors and don't believe the markings on them...they are modified standard bearings with the inner diameter ground oversize.
I've never heard of them being inaccurately done but if some were done privately, it's possible that the cause may lie there.
I usually tap the sleeve gear out with a hide mallet. It shouldn't be a rattling fit.
- Log in to post comments
The new bearing will restore some of the fit, as it's steel to steel loctite will take care of the rest and as the sprocket is tightened up against the bearing inner which will lock it against the sleeve gear flange so ensure the sprocket nut is tight and use loctite here too.