Re: Just curious, how are/were motors rated?

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February 14, 2017 at 5:22 am #52989
vintin
Participant

    In an older issue of the Antique outboarder I remember reading the 25hp RD put out 28hp and the 35hp RD put out 33hp. Maybe that is why in the 1960’s those motors got those power ratings. Explains why that 25hp RD does so well, too.