apc prop spacer for mounting apc props to an m5 shaft motor in a pusher configuration.
Intended for high speed FPV dragsters. The kind that break world records.
the sketch diameters are 5.5mm, 8.65m, and 13mm incase the tolerances for your print aren't great. The 13mm ring extrusion is 0.9mm. the smaller ring extrusion is 0.8mm.
WARNING: make sure you sufficiently torque the prop and use a knurled spacer/washer with the m3 nylock nut. I have had multiple failures before where my prop nut loosened in flight and this spacer/prop spun around freely melting itself from the friction. with this spacer its more difficult for the prop to stay tight and torqued because the prop doesn't have as good of a grip. may be dependent on what material you print in, at least that was my experience with PETG.
| spacer.stl | 90.1KB |
