My build of a 10v continues, and now is time to machine the flywheel. I have a micro lathe (3.5"") and am wondering how is the best way of machining the flywheel. Any tips or guidance would be most appreciated
If you have the faceplate then cut a scrap of thin ply or MDF then bolt the flywheel to the faceplate with the ply/MDF between the two. Use clamping plates over two spokes and bolts through them, not too tight. With this setup you can turn the face and one edge of the flywheel, turn the boss and bore the hole all concentric. Then either reverse the setup to do the other side or mount the wheel on a mandrel.
If using the 3 or 4 jaw then just grip buy the inside edge of the rim and machine as above, the 3 jaw won't allow for trueing the wheel.
Agree with message above, but just to emphasise to bore the centre of the flywheel. If you do all these operations in one go you should get a perfect running flywheel with no wobble. ;D If my memory serves me correct I think the shaft is only 1/4" dia so you will have to make a small boring bar. There is a firm that normally attend the exhibitions and they do sell very small boring bars. If you drill the hole you will end up with a wobble of some description on the flywheel.