I have a KISS wind generator wind generator that develops vibration at
certain wind speeds. T

Balance it more carefully.

The problem is that there's a PVC fitting that goes
over a 2" stainless schedule 40 support pipe that is loose fitting.

Are you _sure_ that's the problem? This is a support pipe, not a running fit,
right? Oscillations are supported by springy supports, not by loose fitting
ones.

I want
to machine one with a sleeve bearing on a lathe and make it out of plastic.

If that's what you want to do we can help.

To keep costs under control I'm looking at the following:

Nylon
Acetal
UHMW
LDPE
HDPE

Comments on the machining qualities, UV resistance, and overall strength of
these would be greatly appreciated.


Use the web engine to find your stock, then show the catalog page for machining
data there.

Acetal is Delrin, right? That's the one you want. All the others melt during
machining. Delrin is pretty stiff and strong. A good all around engineering
plastic. UV grade is black.



Yours,

Doug Goncz (at aol dot com)
Replikon Research, Seven Corners, VA

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