Join Date: Sep 2007
Location: Gaseous Cloud around Uranus
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First you'll have to get the old race out of the hub,no easy task.You can cut it out on the lathe,if you have some diamond tooling laying around.HSS/Carbide will not cut a bearing race.If you have a toolpost grinder,you can grind it out,give yourself plenty of time,because your going to be there awhile grinding them out.Then once you get it out without distroying it,remember,you only have one shot at this,then you will have to find a bearing that will fit.I don't think any of the normal bike hub bearings will work,you'll have to cut the pocket too deep and it will break through the hub on the backside of the bearing.If you can find bearings that are shallow enough,I think you can make it work.I'm sure you can find a needle bearing set that would work but then you would have to make axles/sleeve for them to ride on.
Your going to need some measuring tools that can read in 10,000ths so you can get the bearing crush correct(sealed bearing) or clearance(needle bearings).
If you use needle bearings,you'll get to practice your metallergy skills with making axles/sleeves.You'll have to make them out out material you can harden at home with a torch when your done grinding them.
If you decide to give it a try,don't forget to cut a radius in the back of the bearing bore,you don't want any stress cracks from a sharp edge.
I've been a machinist for longer than I care to remember,I'm thrifty(cheap),retired(bored) and know what I'm doing(experienced) and I still won't do it...But don't let me stop you.I've done worse things than that!!
Last edited by Booger1; 08-07-08 at 10:46 AM.