On Jan 18, 2014, at 8:54 AM, Charlie England <ceengland7@gmail.com> wrote:

Thanks, Tracy; it's good news that it is both quiet and survives. Didn't realize that the aeroturbine had packing in it. If it performs as well as, or better than the hushpower, I may give it a shot. It's actually a bit cheaper than the h.p. resonator.

Charlie

On 1/17/2014 10:53 AM, Tracy wrote:
The aero turbine sounded better than the Hushpower II  but both change in tone over time, probably due to packing deteriorating.   Still, the AT was the best after they stabilized.

Tracy

Sent from my iPad

On Jan 17, 2014, at 11:06, Charlie England <ceengland7@gmail.com> wrote:

Time to order a muffler. My goal is to keep it inside the cowl (RV-7). I know, I know, but it looks better, and more important, it *sounds* better.

I believe that Dennis H. used this:
http://www.summitracing.com/parts/hsh-12412400/overview/
I know it sounds great. Dennis, do you remember the weight of just the resonator?

I know that Tracy is running an Aeroturbine (weight: 6 lbs on the 20B in the RV-8, & has talked about how good it sounds:
http://www.aeroexhaust.com/mufflers/aero-exhaust-at2525.html

They are roughly the same size and price, so I'm wondering how the Aeroturbine will compare in performance (meaning: killing the harsh harmonics of the rotary).

Tracy, you might be the only person who's heard both on a rotary. Based on your 20B experience, is it likely to work better than the Hushpower Resonator on a Renesis? I'll be using a manifold/transition pipe similar to Dennis' setup to keep everything inside the cowl.

Thanks,

Charlie



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