X-tech caliper for M365 with 140mm disc

thingiverse

Human: Upgraded to use 140mm disc which utilizes all of the pad. I have modified the original design to elevate the caliper up 4mm, also enhancing the mount's strength at its thinnest point. Be cautious with the threads in the aluminum, I had to re-tap mine. Aircraft-grade aluminum is used, typical Chinese-made materials more like. I'll never fly with Air China again. I utilized this 3-hole disk and drilled the other four to match the hub. https://www.funbikes.co.uk/p5471_funbikes-petrol-uber-scoot-2x-50cc-brake-disc-140mm The inside diameter of this disc is 29mm, but there's a small ridge on the hub at 30mm, so you'll need to file it off to get the disc to sit flat on the hub. The braking distance has improved from 4 meters to about 1.5 meters at top speed. I found the weakest part of this scooter was the brakes; now I'm much happier. The cost is around £40, well worth it for the extra safety. Update: xtechtr3.stl is a cleaned-up version and might print better. Wheel1 and wheel4 are templates to drill the disc to fit the hub. Position one hole over one of the three holes in the disc and mark and drill the other four holes so that you have five holes in the disc. The first hole used will need to be reamed a little to fit the hole in the hub. One is small holes for marking, and the other has large holes for checking alignment. Make sure you've filed off the ridge on the hub before marking. Ensure the disc is centered to the hub before marking. I just downloaded it as a test, but the new files aren't included in the download, so they'll need to be downloaded separately by clicking on xtechtr3, wheel1, and wheel4; I don't know why this is happening, Thingiverse isn't good at file handling, and I've had problems before.