But the assembly was already off anyway, since I am using 65mm wheels instead of 60, and adjusted the motor forks by 5mm, which means the outer wheels are now about 7mm higher than middle. Which is fine since the bogie is hinged, but it will be weirdly sunken middle look.
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Edit, 5mm, since only half of the extra diameter affects height... so the bogie crossbar will now have about a 5-7 degree off-horizontal gradient, making the thing look a bit like a grasshopper
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This has been an exercise in demonstrating to myself why premature optimization is the root of all evil. I was procrastinating on printing because I hadn’t worked out the exact target geometry of the design for it to be even keeled at nominal. Finally said fuckit just print.
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Good thing because this draft assembly is going to so wildly off in so many ways, I’m going to have to do a significant redesign anyway. But this will be good enough to test a bunch of things
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6 parts printed, 2 more printing now, 4 left. Already aware of a dozen design errors (all fixable in post with a hacksaw and sandpaper so not showstoppers for the prototype). But damn mech design is harder than they let on in school. Dunno how my professors let me pass courses
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The basic mechanical frame for NIM has 26 3d printed parts, 8 bits of aluminum tubing 4 off-the-shelf complex fasteners (ball joints and turnbuckles) and probably a couple dozen ordinary fasteners. It’s about 10x more complex than anything I designed or built in mechE school
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This is going to be a bitch to put together. But milestone coming up… metal-work. Need to cut that aluminum tubing into pieces with either a hacksaw or a dremel.
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Soft test assembly of the draft build. With construction paper tubes where the aluminum will go. Don’t want to cut metal and then discover a major error. This looks ok I think.
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First metal… cut 100mm strut.is there any use for aluminum filings? Saving it anyway. 9 more to go. Aluminum is much softer than mild steel, but hacksawing it is still a bit of a workout. Needs some filing
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