ORIGINAL: MTK
ORIGINAL: tele1974
Most of that is air frame noise. I have the same bird and the thing is loud. I am working on quieting a few things down. Most of that noise is from the ball links on those big barn doors of ailerons.
I have soft mounted the SAP 180 in the EFXtra as shown in the thread for that plane. I believe I posted a bunch of photos on that. Much quieter set-up. Expect 3-6 dB delta on noise
But it is still louder than the Temptress (which is extremely quiet by gas standards!), no?
Do you think the increased noise with the Extra is due to the more voluminous fuse and cowl (and wings, perhaps) and the open structure design? All else being equal - with the engine, mount and exhaust - what else could it be?