1950 Fastwin 14 hp Throttle issues?

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  • Buccaneer

    US Member - 1 Year
    Replies: 6083
    Topics: 921
    #266492

    Is this mag advance, carb linkage, and twist grip throttle working as designed?
    It’s a strange setup to me.
    I could find nothing about it in any manual I had.
    Thoughts?

    Prepare to be boarded!


    frankr

    US Member - 1 Year
    Replies: 6324
    Topics: 50
    #266498

    As far as I can tell, it’s correct.  Bottom line is, with spark advance at slow or retard, the carb butterfly is closed no matter what twist grip setting.  With spark advance at WOT, the carb butterfly is free to be moved by the twist grip.

    While cruising along at WOT and twist grip on Fast, it should sing along.  Leave the spark advance at WOT and twist he grp to Slow and the carb will close, causing it to slow down, albeit rough running.  Twist to Fast and away you go again.

    But for smooth idle/slow running, the carb must be closed and spark retarded, all done automatically by sliding the s/a lever to Slow.

    PS, think race motors with dead-man’s throttle

    • This reply was modified 1 week, 5 days ago by frankr.

    Buccaneer

    US Member - 1 Year
    Replies: 6083
    Topics: 921
    #266502

    Thanks Frank! I know it was Evinrude’s first year for the full gear shift, and remote fuel tank,
    but I thought they had “twist grip throttles” further refined by 1950!

    It seems like one of the Johnson’ QD-10’s had a set up where if you lifted the tiller
    arm up it would return the throttle to idle……. not sure how well that caught on.

    Prepare to be boarded!


    sutterhome


    Replies: 26
    Topics: 1
    #266531

    had one, it was hard to remember it was on.


    The Boat House


    Replies: 3960
    Topics: 99
    #266561



    While the carb and magneto are synchronized
    on this Martin the button at the end of the
    tiller gives you control of the carburetor
    butterfly much the same as the twist grip on
    your motor.
    Tubs
    .


    Buccaneer

    US Member - 1 Year
    Replies: 6083
    Topics: 921
    #266563

    Tubs, I have one of those Martin 75’s with that option. I forgot about those.
    I can’t remember Martins said purpose / advantage of the option either.
    I haven’t run mine in a few years. I thought about it once this past summer,
    but remembered I don’t have the 40W non detergent motor oil for the gear
    case.

    Prepare to be boarded!


    The Boat House


    Replies: 3960
    Topics: 99
    #266705



    I’ve given my 75 to my son-in-law and he uses
    it to fish. Its been getting regular use for the last
    4 years. I still do the maintenance. I’m about out
    of the 40 weight oil you sent me. last year I put
    the gear oil back in as it looked fine. I think this
    year I’m trying something off the shelf. Haven’t
    made up my mind as to what yet. Should know
    by the end of next summer how well that worked.
    I never had any interest in these and only have it
    because it was part a lot. Its a great motor. Now
    I have my eyes out for a 100 Twist Shift (10 hp.)
    Tubs
    .


    wek


    Replies: 4
    Topics: 0
    #266709

    We had a Martin 100 with the button on the end of the grip and the literature at the time said it was to slow down  without having to reach back to the throttle so that you could pass by a fisherman in another boat without disturbing them.

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