![]() 2 gear teeth doesn't sound like much of a difference between ratios but remember that their mated gears are also changing size by 2 teeth, so the difference is noticeable, with a fairly large range between 1st gear and 7th gear. I'm also really happy with the sound the engine/motors make when shifting through the gears, it's really satisfying to play with!įor gear ratios, I decided on 24t, 22t, 20t, 18t, 16t, 14t and 12t as that would allow the main shaft and the lay shaft to fit on a standard 2 module spacing on centre. There's no way you could ever push it fast enough to make the gears click while driving a fake engine. I like that it's much more realistic and has very low friction. I'm certain it would run much nicer with proper Lego injection moulded parts, with the much smoother surfaces and tighter tolerances they can achieve. I think it would run much quieter with some grease but wanted to try without any. ![]() ![]() Yes it's very noisy/rattley and the parts are very loose with not very good tolerances, but thems the breaks when you have an FDM type 3D printer! This is only a prototype.
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