Swerve Drive Modules

[Dave McLaughlin]

Boston Gear makes some nice miter gears that might work for you. Check out this PDF.

[Aren_Hill]

Every swerve 1625 has had (alot) has used mcmaster part #6529K14
this has a 3/8ths bore, you'd have to broach a key yourself, we've had them hex broached typically.

Haven't killed one yet.

Also advice on the module, take a long look at the path forces travel and what things need to stay perfectly aligned (bevel gears)