Now THAT'S encouraging!!  The muffler under discussion has "internal"
augmentation and I believe could be easily adapted to additional "external"
augmentation by exhausting it into a 4" or 5" tube.  I would hope that
augmentation like this would tame the pulses of the rotary too.
Pretty good news so far .... Jim S

William wrote:

> Jim,
> I don't know how to integrate a muffler into the system, but in terms of
> ground cooling, a builder at ARR has an E-racer, with an IO-540,
> supercharged, and cools it very effectively on the ground and taxiing with
> the use of exhaust augmenters. He doesn't use a muffler, so his exhaust
> (each side) goes into an augmenter tube, and this works VERY well. He can
> run around on the ground as much as he wants to with no overheating.  In
> flight, he gets 7-8" delta p depending on his air speed.
> Bill Schertz
> KIS Cruiser # 4045
> ----- Original Message -----
> From: "Jim Sower" <canarder@frontiernet.net>
> To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
> Sent: Saturday, December 20, 2003 10:50 PM
> Subject: [FlyRotary] Re: evap core versus radiator
>
> > Ron,
> > Good to hear from you again.  I thought you had dropped off the end
> > of the earth.  Are you still running "plugs up"?  I heard your turbo
> > didn't work out but nothing for a year or two.  I've heard a lot of
> > talk about electric fans but have been pretty ambivalent for the
> > reason you stated.  I saw an EZ with a conical fairing from the
> > flywheel to the end of the prop extension that had big glass fan
> > blades fastened to it that pretty much dominated the cowl exit.  He
> > claimed that it helped his ground cooling a BUNCH.  Maybe something
> > like that could work.
> > Don't be a stranger .... Jim S.
> >
>
> >>  Homepage:  http://www.flyrotary.com/
> >>  Archive:   http://lancaironline.net/lists/flyrotary/List.html

--
Jim Sower
Crossville, TN; Chapter 5
Long-EZ N83RT, Velocity N4095T