I'll add to this. You can freewheel your prop @ 0 amps.
Depending on your circumstances, battery, if you're racing, etc... It might be cheaper to get a fixed prop, and deal with the drag by simply running the motor at very, very low power (just enough to spin the prop).One thing about electric boats that is very cool is that when you're sailing, if you apply less than 100W, it's often enough to turn the prop fast enough that you have no drag at all, and you may see your sailing speed go up by as much as a half mph. (probably not legal if you're racing, but very nice if you're just cruising.) The amount of power required is typically small enough that a significant battery bank will hardly notice it's there, especially if you're only out for a few hours (or if you have solar you can assist with).On Saturday, January 9, 2021, 08:04:23 PM CST, Carsten via groups.io <carstensemail=yahoo.com@groups.io> wrote:Michael, consider a big folding or feathering prop, which will give you far less drag.Then find the proper ratio for engine rpm and prop rpm.A toothbelt solution will give you the opportunity to change the ratio.On Sunday, 10 January 2021, 04:29:08 GMT+8, Michael Blackstock <mdblackstock@gmail.com> wrote:Thanks for your responses, all. I think I'm just going to go with another stock 2 blade to reduce drag under sail. I plan on utilizing the motor very infrequently, so more speed under sail sounds good to me.There are so many resources for Catalina owners, but I thought I would check with you all first.I will definitely be chiming back in when I begin my motor and battery install!ThanksMichael Blackstock
Cell phone 503-913-8217
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