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1,750 Posts
With a transmission:
- Less to disassemble
- Clutch gives you a failsafe, mechanical disconnect without relying on electronics or fuses.
- Mechanical reversing, no need for reversing contactors, can advance brushes without worrying about reverse, not that you're spiking the current that high in reverse anyway.
- Easier coasting (direct drive is always turning the motor).
- Long hill climbing and towing won't murder your motor from high-current low-speed use, you can just gear down.
Without a transmission/Direct Drive:
- Less weight
- Less bulk (more room for batteries/whatever)
- No bell-housing plate to machine
- Probably easier coupler to machine/weld (take old forklift mate, weld it to U-joint, done).
I'm probably missing a few but those are the big ones.
- Less to disassemble
- Clutch gives you a failsafe, mechanical disconnect without relying on electronics or fuses.
- Mechanical reversing, no need for reversing contactors, can advance brushes without worrying about reverse, not that you're spiking the current that high in reverse anyway.
- Easier coasting (direct drive is always turning the motor).
- Long hill climbing and towing won't murder your motor from high-current low-speed use, you can just gear down.
Without a transmission/Direct Drive:
- Less weight
- Less bulk (more room for batteries/whatever)
- No bell-housing plate to machine
- Probably easier coupler to machine/weld (take old forklift mate, weld it to U-joint, done).
I'm probably missing a few but those are the big ones.