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I've had a Hushpower II Resonator on my Renesis for
250 hrs of flying and 300 total run time. After about 230 hours I took it
off and inspected it. The insides were wrecked, burned and mostly
gone. I cleaned it out and reinstalled it on the plane. It now
is just a larger exhaust pipe and the neighbors say it is a little louder
than before. I do have the Renesis exhaust blowing into a 4 inch
dia. X approx. 6 inch long swirl tank that reverses the flow from forward
to rearward.
I never experienced any loss of power as the inner
parts of the muffler were failing.
Dennis H.
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