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#1
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prop question
I just purchased a used boat. The motor has very good compression even
though it is an older motor. I ran the boat and it seems the top speed is around 25 MPH. at 4500 RPM. I would like to increase this speed slightly. Here is the boat specs: Boat is homemade from a mold of a Boston Whaler hull. so hull is shaped like a Whaler. Hull Material is fiberglass Length 17 foot Motor is a 1984 Envinrude 70 HP with a 3 blade 13.25 X 17 prop. My question is what size prop pitch should I try to go to achieve higher top end. Sarge |
#2
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prop question
When you order a prop, call Michigan Wheel or whatever company and
ask what size prop you can use and what RPM and speed to expect. Regards, Cliff Fishing: "a sport surrounded entirely by liars in old clothes" |
#3
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prop question
licker wrote:
I just purchased a used boat. The motor has very good compression even though it is an older motor. I ran the boat and it seems the top speed is around 25 MPH. at 4500 RPM. I would like to increase this speed slightly. Here is the boat specs: That seams to be the right RPM's for a proper prop Boat is homemade from a mold of a Boston Whaler hull. so hull is shaped like a Whaler. Hull Material is fiberglass Length 17 foot Motor is a 1984 Envinrude 70 HP with a 3 blade 13.25 X 17 prop. My question is what size prop pitch should I try to go to achieve higher top end. I think motor position (tilt) might increase this more than a prop change. Your running a very heavy boat for a 70 -- Rodney Long, Inventor of the Boomerang Fishing Pro. , Straight Up Hooks , Straight Up Lures, Mojo's Rock Hopper & Rig Saver weights, and the EZKnot http://www.ezknot.com |
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