How do you switch between 120v and 240v? I'm trying to get 240v for the welder, but having the ability to parallel the alternator poles to get 120v would let me get the rated wattage out at 120v on 1 circuit, not split. That will be a huge benefit and give me more redundancy in my power options.for me i just stick to the honda eu series of gen sets,
off the shelf item and yea you can modify them to suit your needs.
The other thing is I suspect a rotary is going to keep up with the arc starts better than an inverter - unless it is a real big inverter.