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Old January 8th 15, 06:02 AM posted to rec.aviation.soaring
bumper[_4_]
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Default O-ring material for DOT-3 fluid

On Wednesday, January 7, 2015 8:45:53 AM UTC-8, Dave Nadler wrote:

Thanks Bumper!
Was there a change to the cylinder liner as well as the pistons?
If one finds an early corroded unit, what to do?
Just hone the cylinder?
Replace un-annodized pistons with new parts from Cleveland?
Thanks again for the education,
Best Regards, Dave


Not sure if Cleveland anodized the calipers, but I don't think so. The Corvette guys have been rebuilding the older car calipers due to corrosion with plain aluminum calipers. There's a cottage industry boring out the cylinders, then epoxying in a brass liner, which solves the problem completely. A company called Sierra Brass did the ones for my previous Stemme, around $70 a 14 years ago, I doubt they are still in business as the guy was getting up there (kinda like me now :c) and I couldn't find him w/ a quick search.

I anodized the pucks myself, as I have a small set up for making little aluminum parts pretty. Any anodize/plating shop should be able to do it for a few bucks.

This link will give you some leads on resleeving cylinders: http://forums.aaca.org/f120/resleevi...er-341332.html

bumper