--Gary V wrote:

Hi Guys,

My RV6A come alive yesterday when I started the Powersport rotary
for
the first time.I used Jerry Hey's idea of the tangential exhaust
system and am very pleased with the sound both at idle and right up
to
about 5000 rpms which was as high as I went. Idle at 850 rpm is very
smooth. The noise is not excessive and the sound in my mind was very
acceptable. The question I have is, will 304 stainless stand up to
the
temperatures??? The flange is .250, the short stub pipes are .125
and
the can and downpipe is.065 wall. 304 is all I could find locally at
the time but I will redo if necessary now that I have heard the
results.
Thanks for your help,
Gary Van Leeuwen
RV6A #24297 rotary powered
Ontario, Canada

Congratulations. Hope to see you at OSH.
With those thickness' I think it will do OK.

BTW folks this is a p-port engine.

Paul Lamar

Matt Prather wrote:

What throttling does the Powersport use?

850 rpm is great!  Especially for a p-port.

Is it worth it to try to put some instrumentation on the stainless to
get
an idea of how hot it actually is?  Maybe some welder crayon, or some
of those temperature stickers...

Regards,

Matt-

They use butterflies in the rotor housing.

Paul Lamar

--Jerry Hey wrote:

That is good news in every category.  Glad the p port idles at 850 rpm,
glad the tangential exhaust is quiet and glad it allows sufficiently
free breathing.   I might add I am not surprised.   Jerry

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