Mailing List flyrotary@lancaironline.net Message #23388
From: Ian Dewhirst <ianddsl@magma.ca>
Subject: RE: [FlyRotary] Re: coolant leak
Date: Wed, 8 Jun 2005 23:10:05 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Hi David,
 
I really really think that a cooling system that consumes coolant is leaking it somewhere, either venting water vapor to the atmosphere or leaking.  I don't follow how your coolant level can be going down and yet you still have residual pressure, shouldn't the pressure drop to zero as the coolant is consumed over time?  
 
A rotary is unique in that depending on where an o-ring failure occurs relative to the intake port you can end up with a little problem or a big problem.  As you rotate past the intake port the compression chamber pressure goes from 0 to over a hundred PSI,  once the plug fires the pressure skyrockets due to combustion.
 
-- Ian
If I were getting combustion pressure in my cooling system I think I would be boiling off my coolant PDQ.  But I find that it only drops very slowly, about like in my car.
 
But now I understand how Ed discovered his problem.

--
Dave Leonard
Turbo Rotary RV-6 N4VY
http://members.aol.com/_ht_a/rotaryroster/index.html
http://members.aol.com/vp4skydoc/index.html
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