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Old 09-30-2004, 04:11 PM   #1
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Question Thickness of interior panels?

I've started the repair of my '58 22' Custom. I noticed that the interior aluminum is thinner than the outer skin. What is the thickness? Is it the same alloy as the exterior?
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Old 09-30-2004, 04:51 PM   #2
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I just measured several of the interior sheets on my '59 Tradewind, and they're all .032". No mill stamps, but they feel like the same 2024-T3 as the outside. The Zolatone is 5 mils thick, for a total of .037"

Maybe someone switched yours? Or maybe the Custom was made different?
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Old 09-30-2004, 05:04 PM   #3
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Red face

Don, it's definitely a thinner gage of aluminum than the exterior on the lowest interior panel. I've had no luck with the bow either. Although I think that aircraft spruce might have some of the c-channel for the girts.
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Old 09-30-2004, 05:38 PM   #4
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Carlos,

I'm puzzled. The ribs/frames on my Tradewind are C-channel 1 1/2" x 3/4" x 1/16" extruded. I think you could buy that locally, not from Home Depot, but from a metal fabricator. Freight would be a killer if you ordered from Aircraft Spruce.

The girts/longitudinals on my Tradewind are C-channel 1 1/2" x 5/8" x .032", bent on a press brake. You could get these made by a local sheet metal shop, but you may need to supply the sheet metal if you want it made from 2024-T3.

A metal fabricator could also roll the curves in the ribs. Best to cut a pattern out of cardboard and they can duplicate it.

The fabricators I deal with appreciate a bag of donuts about 9AM.
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Old 10-17-2004, 08:06 PM   #5
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Red face OOOPs

I got busy and didn't read your reply till tonight. I've made a rib/bow out of kerfed 3/4" x .05 ell channel sandwiched between two layers of .032 alclad. I'm going to use the same channel to make a complete window style frame for the 5'x6' opening. I also plan on adding some diagonal braces as well. Sometimes overkill is good thing.
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