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General control line discussion => Open Forum => Topic started by: Donald R Olson on August 31, 2023, 10:11:21 AM
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I'm going to braze up some adjustable control horns for both elevators and flaps this weekend. I haven't made any in a while and I can't remember what gage sheet metal to use for the control arms. I have a little 20 gage (.0359") left over from another project. It seems a little thin. Wondering if anyone has an opion on the best gage to use. I was thinking 18 gage (.0478). Two arms with a slot down the center I think 18 gage would be right. I'm going to make up a mess of them as long as I'm doing it so I don't want to make a bunch too weak or too heavy. I will be using 1/8 rod.
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I would think you might use 16 gauge. IMHO
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.062 in thick steel horn, diameter .093 in music wire. Longer replacement for TF Nobler ARF. No room for ballinks, 4-40 clevis used instead.
Jerry
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The Tom Morris stuff was 16 gauge alloy steel if that helps. That's also what I use.
MM 8)
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Thanks for the info. I went with 16 gage. Worked well.
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.062 in thick steel horn, diameter .093 in music wire. Longer replacement for TF Nobler ARF. No room for ballinks, 4-40 clevis used instead.
Jerry
I use .063 steel to make my horns and also use 4-40 links in the back of some airplanes that don`t have enough space for a ball link. I wrap some thin copper wire over the link then I apply some silver solder because I had problems with the link jumping threads and changing the airplane trim. I also make a fillet around the pin with silver solder since I heard that the pin had detached from the link and haven`t had problems.
Juan
(https://i.servimg.com/u/f73/20/07/49/03/hpim1711.jpg) (https://servimg.com/view/20074903/473)
(https://i.servimg.com/u/f73/20/07/49/03/img_1411.jpg) (https://servimg.com/view/20074903/474)