That sounds like a reasonable size, pitch and blade number. Any idea where I might find such a right hand prop with a 1¡± shaft?
tom@...
850 259-8600
Thos. Stein Inc.?
78B Ricker Ave.?
Santa Rosa Beach, FL 32459
Florida underground utility contractor license RU0058046
Florida plumbing contractor license RF0057995
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On Mar 7, 2020, at 18:32, rjtrane via Groups.Io <rjtrane@...> wrote:
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I have Motenergy 10 kW motors from Thunderstruck on my 40¡¯ 23,000# catamaran. My max speed is 6.3 knots in a calm ?continuous max speed is 6 knots at about 3/4 power ?
I assume your motor is 48v? What is the max RPM? Mine turns 2,400 RPM. Based on prior sea trials I decided a max prop RPM should be 800 RPM. Therefore I installed a 3:1 reduction. I have 18¡± diameter X 14¡± pitch 4 blade props.
if your motor turns 4,800 RPM I¡¯d suggest a 3:1 reduction and a 3 or 4 blade prop close to 18¡± diameter. Your 2-blade just doesn¡¯t have the surface area to get the maximum power of your motor to the water.?
