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From: <cardmarc@charter.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: Re: [FlyRotary] Re: Coolant Leak
Date: Mon, 27 Jun 2005 18:11:43 -0400
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Which is what the 13Brewtt (FD model rx7) has had all along......
Marc 
> From: Jim Sower <canarder@frontiernet.net>
> Date: 2005/06/27 Mon AM 01:27:34 EDT
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Subject: [FlyRotary] Re: Coolant Leak
> 
> Add a little accumulator somewhere near the high point in the system. A 
> cup would seem to be more than adequate. Aside from that, maintain your 
> efforts to purge all air from the system (you CAN'T purge it form the 
> accumulator.
> Of course that *does* involve another footprint somewhere ... Jim S.
> 
> Echo Lake Fishing Resort (Georges Boucher) wrote:
> 
> > I'm sure this isn't news to the group, but that "cup" of air must be 
> > (preferably in an expantion bottle) at the highest point in the system.
> > Georges B.
> > /-------Original Message-------/
> > /*From:*/ Rotary motors in aircraft <mailto:flyrotary@lancaironline.net>
> > /*Date:*/ 06/26/05 14:19:17
> > /*To:*/ Rotary motors in aircraft <mailto:flyrotary@lancaironline.net>
> > /*Subject:*/ [FlyRotary] Re: Coolant Leak
> >
> > The important thing is that; whatever the cause, the pressure 
> > transient is apparently a non-issue. Certainly lines covered with 
> > braided SS aren?t going to expand much, but they still have flexible 
> > walls in there that do distort bit with pressure, as will the 
> > thin-walled tank on a radiator. Clearly there is a hydraulic pressure 
> > being transmitted through the cooling system. My guess is that the 
> > cause is likely the immediate expansion of the inside walls of the 
> > rotor housing (temperature and pressure) while everything else is 
> > cool, followed closely thereafter by initial heating of the coolant. 
> > Heat transfer through the rotor housing does not happen 
> > instantaneously. It?s a guess, but hey; other than for mental 
> > gymnastics, who cares?
> >
> > Al
> >
> >
> > I agree, Al, inquiring minds at least like a plausible hypothesis and 
> > I think the discussion has led to that. Perhaps I'll leave the "cup" 
> > of air, just for peace of mind {:>)
> >
> > Ed
> >
> > 	
> > 	
> >
> 
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