Following takes place between 3pm and 4pm:
Wired up a 12v nissan starter motor to the igbt and upgraded the wiring. It works! I bypassed the solenoid so it just runs the motor. Takes 30 amps to get it moving then ramps up to 60amps and full bore. My 7ah gell batt suffers a bit of "pack sag" at that current dropping to just under 10v. After about 30 seconds of running the igbt base plate was warm. About 30-40c i would guess but its only a 150 amps device , got no heatsink and sits on a wooden bench. So not bad for a first run.
next moves : 4 igbts in parallel , caps , 24v , two 12v starters in series for some white zombie type action!
