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ok. that last vid... do you still have input to the armature? or is that disconnected also?
had a situation once... starter wasnt working on a suburban. i had previously used the seat heater switch as a sort of kill switch, or say starter enable switch in my bosses daughters vehicle, the suburban. shop forman said my switch was the problem.
i disagreed. the starter solenoid was being engaged but the starter motor was not. i said it was the contacts in the starters built in solenoid. but he went ahead and put an outboard ford solenoid, wired it with heavy wire to the starter motor post AND the starter solenoid in parallel to engage the starter to the flywheel..
this did energize the solenoid to engage the flywheel and run the starter motor. but now we had a new problem...
when the engine started and the ford outboard solenoid was no longer sending power to the starter/ starter solenoid, meaning no power from the battery to the starter, the starter gear remained engaged with the flywheel. wasnt at first apparent what was going on.
what we found was, the ford solenoid(large relay) that sent power to the starter WITH the starter solenoid input still in parallel with the starter motor, when the ford solenoid no longer sent power to the starter, the magnetic field in the starter motor was sustained with no power input, but being the starter motor shaft was still engaged with the flywheel, and the starter acted like a generator and kept the starter solenoid energized, holding the starter shaft gear engaged with the flywheel. after about 10 to 15 seconds, i suppose the field in the spinning starter deminished and the gear would finally release.
so once the starter was linked to the flywheel which kept the starter spinning, the starter became a generator for a short period after the battery was disconnected, and energized its own solenoid coil keeping the starter gear in place with the flywheel gear. was the strangest thing. once the forman realized what i was arguing was fact, he said " i thought i was fixxing a starter but instead made a generator. we laughed for days on that. but the fact that the starter motor, while spinning, held some mag field even after the external solenoid deenergized, and was putting out current still, was very interesting. the starters built in solenoid being kept energized by the starter, was the load, and it was the resistance that let the starters self sustained field die out in like i said, about 10 to 15 sec.
so now you have me thinking on that more. there were no magnets in the starter. as long as the starters solenoid coil was in parallel with the starter solenoid coil, residual mag flux and current flow kept it going for a bit....
finally i told him to get a new starter....prob solved
mags
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Topic: I Got a Speedup Effect.. (Read 13740 times)
