another firewall insulated

[Flyyak]

Dan
I have read the extensive test reports that you did and I thank you for all your work. I am at the insulatitng stage for a 7. Is there any reasonable alternative for thermal insulation and sound proofing for the firewall cabin side and the cabin floor. I too have considered regular ductboard for both possibly with no adhesive but mechanical connection. or regular fiberglass for cabin walls.

Do you have any recommendation and what, if anything do you have on the cabin side of firewall, floor and cabin side walls.

I have read about vinyl nitrile closed foam 1/4 or 1/2" for sound and thermal for floor and side walls. Any suggestions would be greatly appreciated.

[Steve Melton]

Better to insulate on the engine side of firewall. I'll probably do this when the engine is removed at some point but for now it's Steve Melton, AKA Lab Rat.

[Wayne Gillispie]

In-flight fires are a bit like IRS audits, everyone's afraid of them, but only a small percentage actually gets the experience.

In addition to 1/8" fiberfrax on the inside of the firewall and tunnel bottom, I installed a cowl exit limit switch, connected to an LED on the panel. I set my fuel flow limit to 0.5 gallons over max at takeoff. I have smoke hoods, nomex gloves, halon extinguisher and water available. In case of an engine fire, I will shut off fuel and electrical and begin an emergency descent.

With proper installation and inspections, we can greatly reduce our chances of an in-flight fire. Our greatest risks are takeoff, landing, maneuvering and weather. I believe we are all lab rats when flying. Continue head banging if desired.

[Flyyak]

Assuming that I try and take all precautions to avoid engine fire and use my best efforts when installing and maintaining the firewal forward, is there a consensus of a good insulation material in terms of weight and reasonable cost that others have used. I understand that if an engine fire does occur that immediate use of proper emegengency procedures and divine intervention are of greatest importance but I would like to use some insulation for sound, vibration and thermal comfort so I was hoping to get some imput on the safest and most cost effective material and installation.

I have received comments from several RV owners about drumming vibration on the floor and front cabin side walls and coolnest at the elbow areas