Describe gauling

[Bill Webster]

Heck. I don't even know if I spelled it correctly.
But, what exactly is gauling?

I know it's a result of the rubbing action between the piston
and cylinder sleeve (IMHO). Is it a highly polished spot
which forms? How do you avoid it? How do you get rid of it?

Boy, I'd bet this will get some interesting responses.

Bill Webster (WWEB...@BNR.CA)

[Steven W Bixby]

Well, in the terms I know it, it's caused by aluminum riding
on aluminum without adequate lubrication - the aluminum sticks
together and literally peels chunks up.

Did you ever over-tighten a standard Xacto #11 knife knob, and then
when you finally got it loose all these aluminum chips seem to fall
out? That's "galling".

Of course, that's pretty simplistic, but it's how I know it. Maybe
some of the metal guru's can help. If you really want to know everything
you never wanted to know about it, go over to wreck.bike.tech newsgroup
and ask this question - you'll get enough bullsh*t flying around to
cover Texas twice. (Except it's already covered. :> )

-swb- (sbi...@cup.portal.com)

[bl...@inland.com]

It's galling, and it's not a highly polished spot, but
a transfer of metal from one piece to the next by excess
friction, plastic deformation of the metal, and welding.
To avoid, just fatten that needle up.