Mailing List flyrotary@lancaironline.net Message #24085
From: Russell Duffy <13brv3@bellsouth.net>
Subject: RE: [FlyRotary] Re: Brake Fluid
Date: Fri, 17 Jun 2005 22:28:58 -0500
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>
Message

I now have new information, though.  Buna-n is the standard in
automotive applications, so any standard automotive fluid should work. 
I'll still ask someone more knowledgable than me before I diverge from
the 'standard', though.  Standards are a crutch for the ignorant.

If you want that warm fuzzy feeling, buy some new seals for your brakes, and throw them in a jar of your favorite brake fluid for a week or so.  I soaked lots of interesting items in brake fluid when I had my RV-8. 
 
Van's normal reservoir has a filter type top on it that of course isn't sealed.  When you have an inverted oil system, and fly around upside down, some of the brake fluid drips out and makes a mess.  I soaked every type of rubber glove, I could find, and nothing survived.  I then started soaking condoms.  Latex swells up to a size that would impress the average horse  :-)   The winner was polyurethane condoms, which were not damaged by brake fluid.  Just apply one on the top of your brake reservoir, and your safe... so to speak.  
 
Rusty (no John, I didn't use the ones that were in my wallet since high school) 




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