SpruceForest
Scratch-Built Patrol SP
Last Activity: Today, 06:02 AM
Joined: 12-31-2021
Location: Germantown MD USA
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We bent ours to 70 degrees or so at the sheet metal ship, then closed them over a 3/16" MDF core (with radiused edges) in the press. Amazingly straight... -
Another reason to try HBA, EAA, and some of the scratch building specialty fora... places to ask about available brakes near you. If you provide your...Last edited by SpruceForest; 04-08-2026, 06:36 PM.Leave a comment:
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https://homebuiltairplanes.com; decent site with lots of archives on stuff like this.
I think we just got the right sheet metal place, but...Leave a comment:
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HBA has a number of discussions on longer home-brew brakes, and certainly doable. Ultimately, we located a 12' brake in rural NJ, but went with paying...Last edited by SpruceForest; 04-05-2026, 07:46 AM.Leave a comment:
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No need to make a mock up full size - you can make up a 1/6th scale or 1/8th scale model of the main spar out of some 1/32" ply or balsa or even...Last edited by SpruceForest; 04-03-2026, 09:41 AM.Leave a comment:
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Fretting occurs with movement between two or more components in contact. If you had fretting between your ribs and the web, I suspect that you might...Leave a comment:
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The biggest reason to butt against the web or spacer/plate is having some extra real estate to work with re: rivet edge distance should you have to go...Leave a comment:
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The wing spar webs are both .032, so the dimension for the center ribs given is the aft surface of the main spar to forward surface of the aft spar. Due...Last edited by SpruceForest; 03-31-2026, 08:03 AM.Leave a comment:
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If stuck buying new, the gas rig I have (current Cyberweld prices) is about $750 plus tax/ship (Smith AW-1A, 3-4 tips, a set of arrestors, a good lightweight...Leave a comment:
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Gonna guess most folks don't have a rack in which to secure a decent sized bottle even if they have a vehicle that can handle the vertical carry. That...Leave a comment:
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Bend radius in .032 2024T3/4 is 2x bare minimum and 4x desired. Any larger than 4x and you start running out of edge clearance for rivets, so I targeted...Last edited by SpruceForest; 03-13-2026, 06:24 AM.Leave a comment:
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