The file 'ABEC Flywheel Chain Adapter 3D Printer Model' is (stl) file type, size is 665.7KB.
This is a remix from the mighty thing : https://www.thingiverse.com/thing:545345 aka the exact same one you can get on eskating https://eskating.eu/product/htd-5m-36-38-40-42-teeth-nylon-carbon-abec-11-genuine-flywheel-refly-wheel-pulley/
I fact i have the eskating one, the irl pin to pin distance is 40.3mm, this is a very tight fit make sure your printer is well calibrated, if not, you may have to resize X and Y of the part before printing. (i had to print mines at 99.75% for exemple)
Then, all you have to do is print your own jig, sized to fit your own sprockets so you can center/drill/countersink corresponding holes in it. Bolt everything a little at the time with m5 - 70 to 80mm screws. Here's how it look on my board :https://www.e-sk8.fr/t/build-sur-loaded-vanguard-simple-et-a-lancienne/11027
Printed thoses in PLA for testing pruposes, i think it may be to brittle. Would recommend to use a more durable filament like ABS/PETG/Nylon and such as well as nicely torqued screws to really compress everything.
drilling_jig_for_87.5mm_sprocket_aka_iso05b-33t.stl | 182.9KB | |
hub_ABEC_for_chain_10mm_rise.stl | 239.0KB | |
hub_ABEC_for_chain_5mm_rise.stl | 239.0KB | |
hub_ABEC_for_chain_6mm_rise.stl | 239.0KB | |
hub_ABEC_for_chain_7mm_rise.stl | 244.7KB | |
hub_ABEC_for_chain_8mm_rise.stl | 239.0KB | |
washer_thing.stl | 482.4KB |