T150 or TMX wheel adapter (Nardi 74 mm, Momo 70 mm, Raid 70 mm)

thingiverse

<b>Made for mounting with M5 screws rather than M6 like the source.</b> Took inspiration from whemming's wheel adapter to make an improved version for the Momo steering wheel pattern, as well as an additional Nardi pattern. Nardi wheels have bolt holes that are aligned horizontally and have a centre to centre distance of 74 mm, whereas the Momo wheels have bolt holes that are aligned vertically and have a centre to centre distance of 70 mm. Changes compared to the source: - Used finite element analysis and topology optimisation with a high radial acceleration load to determine the right shape for the adapter. This is a fancy way of saying "I added a fillet". - Changed the counter bores on the sides to be smaller - 10 mm - because the screw is much smaller anyway (on the T150 my friend has at least). - Changed the hole diameter to fit M5 screws and 8 mm nuts rather than M6. - Added some additional clearance (0.1 mm) to the shaft; my friend complained that the original was extremely hard to press onto the shaft; to the point where he chose to sand the shaft down a little. This extra clearance may have introduced some play, but I have no way to test that myself. If there is play, let me know in the comments and I'll fix it. - Changed the pegs to taper down towards the base, which is what it does on the shaft as well. In the future I may try to add some tactically placed reinforcement "fibres" in some directions if people experience strength issues. For reference: https://reprapltd.com/fibre/