1965 johnson 90 hp charging system

jimg984

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does this charging system have magnets or an electric coil for the statort to generate power?
 

F_R

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Re: 1965 johnson 90 hp charging system

Help me out in the memory department: Does it have a steel flywheel that looks like a flying saucer with round portholes all around it?
If so, no magnets, but it has a field coil built into the stator that is energized by current from the key switch. The voltage regulator interrupts the field as necessary to maintain proper output.
You are smarter than the average bear to know there is a difference.
 

jimg984

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Re: 1965 johnson 90 hp charging system

yes, on the flying saucer. thank you for confiriming what i thought it was.
i plan on doing away with the regulator and feeding strait to the the coil from the the key switch. 2 wires from the stator to rectifier. 1 wire from rectifier to the battery postive side, i may break that wire tru a volt meter.the rectifier will be a bridge rectifier 35/28 amp 1200 volt ($3.28) i may have to break the wire from switch to rectifier thru a restat. to control voltage. stator and coil both ohm out to be good whatta you think of the plan?
 

F_R

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Re: 1965 johnson 90 hp charging system

Probably will work. That alternator puts out up to 20 amps, even at idle. So it probably is capable of blowing that rectifier if you don't keep it under control. The original setup has a 60 amp fuse in the output and I've seen a lot of them blown.

I think if you are smart enough to design that scheme, you are smart enough to go to the store and get a 1962 Chevy truck Delco-Remy voltage regulator and wire it into the circuit. I have been told that is the same regulator as OMC used, but I have not verified that. Nor do I have the Delco part number. Remember, this is heresay.
 
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