Re: Joe Nall and Mufflers?? I have been flying the Variable Pitch for months now and have gone to a few Big bird events with the plane. What I have learned is, the VPP with forward only props is WAY quieter than any gas plane I have seen fly.... Mostly because the RPMs are keep to below 6000. You can hover at 6000 rpms and go 120 mph at 6000… Just something I found. DA100 28” VPP Pipes
Eddie Weeks
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