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5:49 AM
February 10, 2011
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Yes, the bearings. I guess the bearing could go in the rotor rather than the shaft ends, so allow bigger ones. What are they like with annular forces, could one survive on its own, or are two needed to ensure axial alignment?
6:55 AM
October 4, 2011
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Hi Jerry, I gather you mean angular forces? They are ball, not roller bearings, so I would tend to balance them. I think two would be easier all round, as balancing from a single axis connection would not be so simple.
I am playing with throwing a rotor in a Al pipe I have, 100mmOD, 8mm wall thickness. Ideally I would like to drill for the bearing insert from the opposite side, not all the way through, though I do not see any easy way to do this. Probably have the bearings go from the outside, then a cover plate.
Regards
Peet
6:33 AM
January 12, 2012
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Hi Jerry,
Find yourself a lapidary hobbyist and have him make you a pair of bearing cups from Agate, which is quite hard and very durable (or better yet, synthetic corundum [sapphire/ruby]) then you can use hardened metal points (or even carbide if the cups are of corundum) for your shaft.
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