I wanted to share a couple things I learned from selecting a new prop for my 1984 15 hp Johnson. First, the 200 rpm per pitch size was not even close in my case. And it makes sense if you do the math. The standard prop being a 10. One size up or down is +or- 10%. Also in case of a two stroke, if your dropping below the power band, you can expect gains from getting the rpm's back into the power band.
I went from a 10 to an 8 pitch prop. This changed the rpm's from 4900 to 6400 a gain of 750 rpm's per pitch size!
Thanks (Crazyboat) for hooking me up with a prop guy in another forum. He got me headed in the right direction.
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I went from a 10 to an 8 pitch prop. This changed the rpm's from 4900 to 6400 a gain of 750 rpm's per pitch size!
Thanks (Crazyboat) for hooking me up with a prop guy in another forum. He got me headed in the right direction.
Sent from my iPad using Tapatalk