N62588 Phase 1 Flight Testing

[Nev]

My firewall was drumming early on. I added several beads of RTV to adhere it to the airframe. This made an audible difference. Also the lightweight carpets reduced the drumming on the aluminum floor panels.

[TJ_Slice]

I used this product on the face of wall studs when I was building a theater room 15 or 20 years ago. I wonder about marking the tubing locations on the floorboards, and then sticking the tape on the floorboards: https://www.greengluecompany.com/noi...cts/joist-tape

I also plan on doing carpet.

[rodsmith]

I placed 1/16th rubberized cork strips over the tubing before installing the aluminum floor. Can't say how much it helped. I used 5/8th open cell foam on the backside of the firewall and on top of the exhaust tunnel, and the grey insulated blanket material on the inside of the boot cowl. That is the extent of my sound proofing and even at full power I can talk on the radio and hear responses ok. My entire front doors are covered with .100 lexan and skylight is .125 lexan.

[svyolo]

The tunnel and Firewall are definitely going to get something.

[Bissetg]

Hi Brooks, I too had horrendous ambient noise levels. I was running straight exhaust pipes, no muffling. After trying all sorts of things and worrying about not hearing traffic calls I bit the bullet and got MotorSport Solutions to custom build me a 4 into 1 tuned exhaust.

Thats what made the real difference, I could dial back the volume on the radio 25% and still hear it better than before.

Soundproofing and going to Bose ANC headsets all helped but the big win for me was the exhaust.

Good luck, noise is annoying, fatiguing and a safety issue.