Thorp Air Command - T18.net

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fytrplt
PostPosted: Sat Dec 02, 2017 10:33 am 
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Heat is the issue with the side vent of the engine cooling. Your primary goal here is to insulate. As for sound, get a good headset.

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Binder
PostPosted: Sat Dec 02, 2017 10:58 am 
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fytrplt wrote:
Heat is the issue with the side vent of the engine cooling. Your primary goal here is to insulate. As for sound, get a good headset.



Ah, I don't notice much heat on the panels even being bare metal.

I don't have issues with sound but we aren't able to bring our dogs for a ride in the thorp due to the sound. If I pull my headset away from an ear to listen for engine noises it's painful loud even in cruise. If the insulation did anything for this I might be inclined to try it. I know the lack of exhaust muffler is the main reason but I'm not adding that boat anchor of weight to the thorp.


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Jeff J
PostPosted: Sat Dec 02, 2017 12:17 pm 
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What is considered loud is a matter of perception. I don’t really consider my Thorp loud because I could carry on a conversation without an intercom and/or ANR. That may be too loud for dogs though and is quieter than I am use to.

Mine is insulated all the way around in one way or another to the spar. The sides are done to the seat backs.

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Binder
PostPosted: Sun Dec 03, 2017 9:48 am 
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Jeff J wrote:
What is considered loud is a matter of perception. I don’t really consider my Thorp loud because I could carry on a conversation without an intercom and/or ANR. That may be too loud for dogs though and is quieter than I am use to.

Mine is insulated all the way around in one way or another to the spar. The sides are done to the seat backs.



Mine isn't close to that sound level. That's about like my Piper though. In my thorp I don't think I could handle more than 30 seconds without a headset. It causes physical pain in my ears. And I was on a 105mm field artillery line for my first 4 years in the army.


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Terry Adams
PostPosted: Sun Dec 03, 2017 1:47 pm 
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I had the same Maule tailwheel on my airplane. I believe either Ken Brock or Tom Hunter highly recommended replacing the single fork with a dual fork tailwheel as there had been incidents of the single fork breaking. I changed to the ACS dual fork on the standard Thorp flat spring. I can not determine from your tailwheel photo, but I also highly recommend compression springs rather than extension springs on the control horn.

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ljkrume
PostPosted: Mon Dec 04, 2017 3:02 pm 
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Heat on the sides hasn't been much of a problem with my Thorp. You might enjoy the extra room without the Styrofoam. Besides that, do you know how flammable that stuff is? I'm not fond of the bubble wrap stuff either, but for places like the firewall you might use fiberglass wool - it doesn't burn. McMaster-Carr has lots of "aircraft hardware" and here's some 1" lightweight, foil-faced, rigid fiberglass sheets you can cut with a knife:

https://www.mcmaster.com/#thermal-insulation/=1ajhhpl

Les Krumel,
Albuquerque


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