Mailing List flyrotary@lancaironline.net Message #28052
From: Bob Darrah <RDarrah@austin.rr.com>
Subject: Re: [FlyRotary] Re: Brake fluid flash point
Date: Thu, 1 Dec 2005 22:20:16 -0600
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Message
Ed,
 
No, you are not wrong.  If it is below the flash point, it will not continue to burn if ignited.
 
Bob Darrah
----- Original Message -----
 
So am I wrong in assuming that a fluid with twice is high a flash point as a similar fluid requires more heat to ignite it??
 
Ed A
----- Original Message -----
From: Bob Darrah
Sent: Thursday, December 01, 2005 10:46 PM
Subject: [FlyRotary] Brake fluid flash point

Ed,
 
Me thinks that maybe you have a misunderstanding of the term "flash point".  It is not what most people assume it is.  I say this because the flash point of the gas in your tank is something like 60 degrees BELOW 0.  That means that on a hot day, the temperature could exceed the flash point by 160 degrees and you don't see too many people concerned about that.
 
Bob Darrah
----- Original Message -----
Sent: Thursday, December 01, 2005 7:43 PM
Subject: [FlyRotary] Re: fuel/brake lines

Rusty,
 
I went with the new high flash point aircraft brake fluid (MIL-H-83282)- flash point is 450F vs 240F for the old stuff.   I had to get a gallon of the stuff (enough to probably last me for years and years and years), but after the fire, I feel a bit more comfortable that it won't go up with the temp a little over the boiling point of water.  I considered some of the auto brake fluids - but have heard some horror stories about incompatibility with aircraft seals - I know there is some DOT formulas that supposedly are compatible - but did not feel like experimenting {:>)
 
Ed
 
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