Home › Forum › Ask A Member › Evinrude Sportwin 9.5hp vs Johnson QD 10 hp › Re: Evinrude Sportwin 9.5hp vs Johnson QD 10 hp
October 17, 2017 at 3:40 am
#66313
quote Chris_P:
They started measuring HP at the prop in about 1985.
As others have stated, in my experience, the QD all day long. No comparison for me.
I have a 2-page magazine ad from 1957 that shows the Johnson lineup for that year and clearly states that HP is measured at the propshaft. In the 1960s, as new models were designed, the measurement started going to the powerhead. It returned to the propshaft, as Chris stated, in the mid- 1980s when sales dropped because the Japanese were outperforming with propshaft ratings.
Dave