Fully printable analogue parking brake
thingiverse
Analogue Parking Brake A Remix of Analog Parking Brake for Driving Simulations by HaraDaya - https://www.thingiverse.com/thing:2286976 I liked his design, but I wanted to make it fully 3D printable (no old coat-hanger bits or PVC pipe) and eliminate the rubber band on the pawl, as I felt this would be easily achieved by putting a spring between the handbrake button (pushbutton.stl) and the handbrake lever (lever_mk3_reinforced_rubberband_hook.stl), inside the handle tube. I could have probably deleted the hook on the side of the lever too, but I'd already printed it at that point. So I made a really simple tube for the handle which combines with the existing parts. If I were to do it again, I'd make handle_end_piece.stl, PVC_adapter.stl and Handle_tube.stl into a single piece, and make it more realistic/ergonomic. But for now, this'll do. HaraDaya used a bit of pipe because he was worried about strength - but printed with PLA, the handle seems as strong as an ox. I don't know if the 3D printed nut and bolt will hold up over the long term, but I couldn't be bothered to wait for a bolt to come from an ebay seller, so I just made this. If it turns out to be too weak, I'll either redesign for a 7mm bolt instead of a 6mm, or just use a metal one. My handbrake will be used in driving simulations, not racing games, so it shouldn't get much abuse. The pushrod seems strong enough too. If the tolerances are too tight, you might need to use some sandpaper to sand down bits that push together. I like a tight interference fit with a touch of epoxy to keep things strong. When my arduino turns up, I'll know more about the durability. I may update soon with some kind of cover. ### BOM 2x M3 10mm screws (one can be longer if desired) A rubber band (optional - I don't bother) WH148 ≤10k potentiometer Positive and negative leads Arduino Micro USB cable Some epoxy
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