Re: Need suggestions on SMALL 12 volt starter solenoid for 1955 RDE-17 25 Hp Johnson

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August 3, 2018 at 1:01 pm #80600
nj-boatbuilder57
Participant
    quote outboardnut:

    …and the 6 volt choke solenoid (putting a resistor on)

    Maybe I’m reading this wrong, but are you going to apply 12V to the 6V choke with a resistor in series to drop the voltage? (That’s what I’m reading here…)

    I don’t know about your choke, by my choke (’57 Javelin 35HP) draws 7A. Dropping 6V over a resistor with 7A flowing through it will dissipate 42W. (P=I*E). While I realize that the choke isn’t on for very long, that’s still a mighty big resistor (and heat) to put under the cowl.

    Check your choke’s current first & do the math. If your choke’s current is at all like mine, you may want to re-think this strategy.

    Or am I mis-interpreting your intentions?