Old 10-27-2020, 07:40 AM
Svante's Avatar
Join Date: Feb 2005
Location: Oslo, NORWAY
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Default In-fuse muffler heat - need for insulation and protection?

Hi all.
I'm building a giant Corsair with a Zenoah 62 up front. To reduce things hanging out I have put the muffler behind the firewall. It's a stainless steel type can muffler from Toni Clark, similar to this one: https://toni-clark-shop.com/Stainles...-and-ZG-62S-SL. All of it is behind the firewall wth just the flex pipe going through. The out-pipe sticks out through a small hole at the bottom of the fuse in front of the wing,
I am not sure how worried I should be about the heat? One thing is the hot metal closest to the balsa, e.g. around the flex pipe, and another is the heat build-up in the fuse.
I was thinking to put some glass insulation lining around the muffler, which will help for not scorching the wood and for making a barrier between the rear of the muffler and the rest of the inventory (gas tank, electronics, batteries), but it will not get rid of the heat itself. Wondering how much I need to do? Anyone having had good or bad experiences with this type of setup?