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picksbigwagon

got my new prop

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finally pulled the trigger for a new prop, the old dinged up prop was a 13x11 (1989 evinrude 40 HP tiller on a 1989 crestliner fishhawk) and after finally talking with a tech at CP in shakopee, I went with a Hustler 12.5x13 prop. I have never been happy with the speed I have gotten with my boat. It has never really bogged down on take off so he suggested I went up 2 degrees in pitch to start with. I have never gotten more than 23 mph (gps speed) with my boat. I will get 21 MPH with 3 adults in the boat so he said I was getting enough power, not enough speed.

So if I can get on Prior this weekend, we'll see what happens.

One of the "pro's" at GM had told me to go with a smaller pitch.....

I do have a trim and tilt foot switch for my tiller so I am not that worried about getting up on plane, but I seriously want to get more speed.....

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If I can get an extra 5 mph I will be happy............

either way, the snaggly prop that is on there right now will be history in a day or two....until I get it fixed

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I hope it works but I think getting 5 more mph out of a 40 is a pretty big stretch ....the only way that would happen is if you had a terrible setup to start with before you switched props. Good luck.

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I think he will be happy. In a perfect world with the engine turning 5800 rpm through 2:1 gears and 15% slip, an 11" prop calculates to 25.7 MPH and a 13" wheel will net 30.3 MPH.

Let's see how close it comes out!

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....but you wont turn 5800 with both a 13 and 11. Engine rpms are going to drop with the 13.

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That is a fairly light boat.

I think you should be seeing around 27 MPH with the right prop and good weight distribution.

Your a big guy. How many batteries and where are they? Too much weight in the stern will slow you down.

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Well, that's my point about the "perfect world". I did the calculator as a reference point where only one variable (pitch) is changed. Let's see what he gets!

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I say he will only gain a few so my guess is 25-27 mph. Especially with 3 guys in that boat.

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We'll find out this weekend.........anything more than 23.1 (gps speed) will be fantastic.........I have 2 31 series batteries in the front of my boat, but even before I got the trolling motor, I never went faster than 23.1

With three guys in the boat, I still get 22 mph.....the power is there, but the speed isn't, we'll see.................either way, I needed a new prop after bouncing the old one off rocks in WI

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Just got back with my Kindergarten Graduate (today!!!) He sat in the front, on top of two series 31 batteries and a 74# trolling motor on the front and we were going 28.3 mph. So, with that weight up front, me and a kicker motor to boot sitting the back of the boat, I would say the move from a 13x11 getting 23.1 mph with me solo to 28.3 mph is a great result. I am extatic to say the least........hole shot was better than the old prop too...........I am staying with this prop although i did notice a little porpoising

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