2016 July 07: Military Trailer Log Arch: Part II

Note: I meant to post this around 7/1/2016, along with a video showing how it worked. But then I had “the accident” (read about it here). I’ll post this anyway, so you can see the intent of the arch. I’m going to re-do the arch, and I’ll make a post about it when I get it done.

Photos of the build last weekend (6/25/2016):

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One of the better welds I made….

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Pretty proud of this- first time welding, had a great instructor (Ellery), who just let me go for it.

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It will fit on the trailer like this. From the last welded joint to the bottom of the legs is six feet. I measured repeatedly to make sure the legs were parallel. When all was done, I re-measured and found that the legs were 1/4″ wider at the bottom than they were at the top- pretty good for my first time. I had to adjust the top beam- I made it a little wider than the plan called for: In all my figuring, I forgot to figure the amount of material lost during the cutting- the cutting blade is 1/8″ thick, so two cuts equals 1/4″, and that threw off the angles a bit in the angled beams, which made it necessary to change the length of the top beam. It all worked out in the end.

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You can see in the chalkboard drawings one of my dilemmas. Friday night, I drew the 3-D drawing, with the first cut going perpendicular across the tube, and the second cut making a chicken mouth. But that night I had a dream that my calculations weren’t correct, and woke up with an uncomfortable feeling. The second drawing shows my corrected calculations- I found if I made cuts using the first method, my joint would not meet up – you have to bisect the cut so the two edges will touch when folded over.

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brianhill

Just a regular guy from Utah, now living in Alabama, involved in life, liberty, and the pursuit of happiness.

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