I have just finished re-bushing the transmission drums for my roadster project, using bushes from the vendors. 3 of the five did not clean up entirely when machined to give the recommended clearances. The only good thing is the clearances will be greater rather than too tight. Perhaps the makers should be made aware that we need a little more material to work with. I machine the bushes so they just go over the gears. When in the running position, the clearance is usually taken care of by the wear on the shafts.
New un-worn gear shafts might have seen the bushes clean up for the correct fit, but they need to have more material for them to be machined to suit worn shafts.
Has anyone else had the same problems?
Allan from down under.
Yes: I have had low speed bushings and reverse ones just barely clean up. You're not the first.
Low drum bushings seem to be the worst in this respect. A .005" smaller bore would be enough 90% of the time to get a nice clean bore. Its very frustrating to have to press out a new bushing and go make one in order to avoid having excessive clearance. I hope that whoever is making the bushings gets this message. Bob? Don III?
I have seen the same thing. So far the ones I have done have given no running issues. While they are adding material to the ID why not do the same for the upper drive shaft bushing. Making them to the factory prints is great if you are installing a new drive shaft.
You need to contact Snyder's or Bob's, The manufacturers or nothing will get done.
Bob's a few months ago was talking of making the correct bushings but have not heard nothing since?
Bob has made the triple gear bushing. There was a thread a while back, questions were raised as to the type of bronze used. I think it was resolved..