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My Hushpower resonator ( short hushpower) is still
going - 250 hours on Renesis and LOVE IT!! Everyone that hears my
fly by comments on how quiet the plane is. About 10 hours ago I removed
the muffler and removed the few peices of the baffle still inside. I never
saw any performancy decrease due to blockage as it failed. Now it is
only an enlarged muffler shell in the exhaust system. My neighbors
tell me it is no louder and the tone of the exhaust is a little
deeper.
My 4 inch dia. tangantial pipe (used to turn the
exhaust 180 deg.) is still doing fine with no signs of any failure. This
is located foward (toward the prop) and is fed by the factory exhaust
maifold. This system combined with the split side flange exhaust
of the Renesis makes for a very easy to control exhaust.
As far as Renesis Horsepower goes - I have a Catto 76X88 porp and RD1-C
PSRU on my RV-7A - I pretty well match my neighbor"s RV-7A with a Lycoming 180
engine with dual electronic ignition.
The following has been addressed before but I'll repeat it based on my
experience.
I use 0.5 to 0.7 oz of WalMart outboard oil and Marvel mixed half and
half per gallon of regular grade Mogas. Cost is about $12.00/gal for
the oil mixture. In cruise I use 8 - 9 gph and at 0.6 oz/gal I would
burn 213 gallons of Mogas for each gallon of oil. Mogas is about
$1.00 cheaper than 100 LL. With the oil cost figures included I save
$200 in fuel cost when I fly 213/9 = 23.6 hours.
My dual fuel pumps are in the cabin, foward of the seats on the
floor. I have never had any fuel vapor problems - even in Texas in the
summer.
Hope this helps some.
Dennis Haverlah
Has anyone had their hushpower muffler fail, and if so, how did they
fail?
Thanks,
Brian Trubee
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