Mailing List flyrotary@lancaironline.net Message #23722
From: Michael LaFleur <mike.lafleur@sbcglobal.net>
Subject: Re: [FlyRotary] turbo PRV's
Date: Mon, 13 Jun 2005 09:55:22 -0700 (PDT)
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Yeah, that's what I want. I know they are out there.
There are alot of normalized aircraft out there. That
may work out fine. 35 inHg is about 2-1/2 psi boost.

What would a Renesis do under 2-1/2 psi boost? Maybe
the PRV can be found that is a couple of inches less.

Mike

--- cardmarc@charter.net wrote:

Whoooah. All serious aircraft that have turbos have
a "PRV"-pressure relief valve on the intake
manifold, set to open a few inches above the max
boost level you contemplate on maintaining
(turbo-normalized models). They are able to maintain
sl pressures in the intake at elevation, so they are
referenced to know the difference. The one I'm using
opens at 35", even if at 20,000 feet.
Marc Wiese
> > I also understand the blow-off valves are useful
in car applications, where
> the driver will shut the throttle suddenly after a
period of high boost. The
> turbo can not shut down so fast and the compressed
air has no place to go.
> The valve than releases the air out to prevent
damage. I don't see why we
> need blow off valve in aircraft?
> Bulent


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