Aaron Evans — mechanical engineering projects

Rev 01 · in testing

Planetary gearbox

Three printed planets between a sun and a ring gear, geared 5:1 so the output still turns by hand. Rev 01 is assembled and part way through its requirement tests.

5:1
Ratio
0°
Backlash
16 Nm
Peak target
3
Revisions
Open project →
Rev 01 gearbox assembled with the integrated motor housing
V2 · built and analysed

High-clearance hitch

Built from a scrap hitch for $50, then modelled and checked in FEA to find out why the rack swung on rough ground. Torsion in the crossbar was 94% of it.

37%
Less deflection
2.7
FoS at 4G
8.9%
Calc vs FEA
$50
Build cost
Open project →
Two mountain bikes loaded on the V1 hitch rack beside the vehicle on a wet logging road