I know this is certainly off-topic to this forum but I trust you guys
I have a 6HP vertical shaft lawn mower engine in great shape. I also have a 90A, 12V alternator. The alternator has the built in regulator and externally controlled field, meaning I can place a control switch in line with this circuit to activate, deactivate the output. I have this stuff lying around and of course I want to play and tie them together. My first thought was to use it for a battery charger but then I thought about adding another, larger alternator as well to produce ~2.5KW to operate the A/C on my travel trailer. The big ticket item will be the modified waveform power inverter at about $400. The second 140A alternator is about $100. I know some of you are thinking “why not just go buy a mickey mouse 3600 rpm screamer?” and I have to say “where is the fun in that?”
Questions are:
Will there be a problem paralleling two 12V auto alternators of different capacities?
Has anyone here attempted this and can provide firsthand experience?
Is having a high wattage rheostat in series with the field voltage to control output doable?
Thanks
Dave