This is all obviously napkin math, but the result is pretty surprising. Figuring out the length of the tubing in this design, I was able to do some weight calculations: I also did a calculation on 3/4″ tubing of the same wall thickness for use in cross ties and such. Running that through the online weight calculator I’d found, that comes out to 2.133 lb/ft. I found a kit that featured 1.75″ tubing with. I’ve refined my safety cage a bit and done some more research into safety cages used in racing. We’ll see.Īuthor Nathaniel Salzman Posted on JanuCategories Chassis, Construction, Prototyping 4 Comments on Scale sizes for brass tubing Spendy toys with great aesthetics I wonder if I could even mill parts on my dremel press from solid brass if I take small bites. Now that I have both a working band saw and a drill press, I should be able to fabricate pretty much anything at that scale. I’ll be able to find small bearings, bushings, and other hardware at the local R/C car shop. Once it’s all soldered together, it ought to be pretty sturdy. These materials should be lightweight enough to be easily workable. So at 22% scale, my equivalent brass tubing sizes are as follows:ġ″ steel tubing (the majority of the structure) = 7/32″ brass tubing ġ-3/4″ steel tubing (the heavy bits of the roll cate) = 3/8″ brass tubing I can also easily bend curves and other complex shapes without too much effort I’m going to use brass tubing because it’s inexpensive, readily available, and I can solder it together similarly to how I’d weld the real thing out of steel. More importantly it’ll hopefully reveal the majority of mechanical complications. If I also scale my materials as much as possible, it’ll give at least some idea of structural rigidity (although not material rigidity). ![]() That’s not quite quarter scale, and should be plenty big enough for me to build most components in about the same way they’d be built in full size. Presently, my small-scale prototype will be 22% the size of the real deal. I’ll be using 6″ diameter wheels up front and from that I’ve been scaling down dimensions from my design graphics to match that proportion. I’m currently collecting parts and materials for a small-scale functional prototype. HEATED SEAT & GRIPS, NAVI,XM,CB,TRAILER HITCH. "0.00 MILES" ON THIS E-TRIKE AND "0.00 HOURS" ON THE LITHIUM BATTERY & METER, IT'S BRAND NEW! AV.
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