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No answers to any of these questions Bill. I will call
Brian tomorrow and see what's up, and get some specifics. He brought it up
because we have been talking about the turbocharging issue, and how/where to
locate all of the parts, including shielding.
Greg
----- Original Message -----
Sent: Tuesday, March 04, 2008 10:57
PM
Subject: [FlyRotary] Re: Exhaust? was
[FlyRotary] engine installation pictures
Yeah, and my friend in SoCal, the Racer again, says
that the 20B racers down there wrap, and it really helps. But then
again, racers......
Greg
Greg,
And they tested this how? With what instrumentation? So you know I have
built racing cars and bikes for others and I have road raced motorcycles
myself. The only coating or wrap I could find that worked was the Jet-Hot
coating. That was on a motorcycle. The in cowl temps were reduced by 15°F.
There wasn't any HP increase that I could determine reliably. I did record an
increase on the wheel dyno but not enough to be certain it wasn't just
different temp and baro pressure conditions. The rotary exhaust temperature is
so much hotter that Jet-Hot has only had a suitable coating for about a year
and a half. I'd try that if you must. Shielding, even thin and close has
proven to be effective, as has zirconia ceramic blanket. The wrap may not have
actually caused the cracking on the exhaust system mentioned previously but it
certainly makes it impossible to detect cracks before they get dangerous. I'd
stay away from wraps for just that reason.
Bill Jepson
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