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Old 10-03-2009, 10:02 PM   #1
mick dryden
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Default 1/3rd scale Pitts

I am new to big gas engines and I would like to know what size firewall I should use on a 52cc 2 stroke, I am thinking 3 layers of 3mm. Does anyone know please?
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Old 10-04-2009, 01:00 AM   #2
jongurley
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Default Re: 1/3rd scale Pitts

I would say 12mm would be great,, that would be about 7/16's of firewall, I think that would be a plenty,
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Old 10-04-2009, 04:18 AM   #3
Black Sheep
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Default Re: 1/3rd scale Pitts

Yeah, 12mm is more than adequate. My Byron Pitts firewall is 3mm with a tapered doubler for the Byro-mount. I scratch built a 1/3 scale S2A and put a 3W 75 in it on 12mm without any problems.
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Old 10-05-2009, 10:21 PM   #4
GonePostal
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Default Re: 1/3rd scale Pitts

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