Re: 1957 Johnson 10hp and 18hp gears

Home Forum Ask A Member 1957 Johnson 10hp and 18hp gears Re: 1957 Johnson 10hp and 18hp gears


david-bartlett


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#79318
quote BillW:

Somewhere in the late fifties, don’t ask we where, exactly, they also changed the direction of the spiral cut from one way to the other. I have always wondered what the engineering reason was for that. If challenged on this, I think I MIGHT be able to find some examples in the basement…

Bill,

I believe you! My grandfather had a 1958 Johnson 18 that broke the driveshaft right at the pinion. His nephew was using it at the time and we never got the whole story. Anyway, I got a parts motor with the idea of just swapping the driveshaft, but the end of the shaft where it went into the pinion was different, as were the gears, so wound up swapping all the innards to make it work. Still running today!