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Proper props... they make a difference!

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  • 3 Post By hjorgan
  • 2 Post By Brezinup
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Proper props... they make a difference!

Old 09-13-2019, 03:43 PM
  #1  
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Default Proper props... they make a difference!

I have an old Proline 2950 with twin Suzuki 300s. New in 2017. Handling has been an issue. She's a butt heavy old girl (I usually like them that way) but she's tough to handle (I usually like them that way too but not in boats).

Went to Accuprop in Pcola a few weeks ago. Discussed it with Dennis. He loaned me 2 4-blade props to test. One was an 18 pitch and one a 19. Had to turn off sync to keep them at the same RPMs. The 18 pitch blew the rev limiter at 5900 so looked like 19 was the trick. But, these were 15 inch props. The Zukes can swing a 16.

Got the new 16 inch props today and stuck them on after work. Man what a difference! Before I couldn't stay on plane at less than 28 MPH. With the new props (light load) I was on top at 10 -- yes 10 MPH. Incredible difference.

Also my MPG at 30 MPH went from 1.5 to 1.8! That's pretty big over a 100 mile run. Used to be at 4200 RPM I was running 30. Now I run 36 at 4200. At 30 I'm turning 3700 RPM.

So, yes, props make a difference. As for the right shop, Accuprop gets my vote! Thanks again Dennis!
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Old 09-13-2019, 04:01 PM
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5 P's. Proper Propping Prevents Poor Performance.

Easily said. Difficultly done.
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Old 09-13-2019, 04:09 PM
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Excellent! This shows the importance of bringing in a real expert. There is a lot of misinformation out there in props, and you really do need someone who knows what they are doing.
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Old 09-13-2019, 05:10 PM
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When I was looking for a prop I went to PropGods. He specified a prop and since he took the time to respond I ended up buying from him. He hit it dead on. Great performance from the prop.
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Old 09-13-2019, 05:47 PM
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OP, Good for you, I know props can make a world of difference in a Boat’s handling. A couple of questions. I have a heavy boat like yours with 300 zukes. Mine is stern heavy also. Did the new props give you more stern lift and did you keep the motors in the same hole location? How about trim tab usage? Did that change.. What props did you come out of? I’m using 16x21. These are all things I have been wondering. Thanks Ron
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Old 09-13-2019, 05:54 PM
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Originally Posted by R-KID View Post
OP, Good for you, I know props can make a world of difference in a Boat’s handling. A couple of questions. I have a heavy boat like yours with 300 zukes. Mine is stern heavy also. Did the new props give you more stern lift and did you keep the motors in the same hole location? How about trim tab usage? Did that change.. What props did you come out of? I’m using 16x21. These are all things I have been wondering. Thanks Ron
Yes the hole shot is much better. Pops up like a cork. Stern lift is what I was after. Mission accomplished. 3 blades are 3x16x18,5. Went with the 4x16x18. I hit 6000 rpm at WOT with these props. Top speed before was 54. Now it's 51. I'll take it. We fish offshore and comfort/stability beats speed.

Same hole as before.

Trim tabs were full deployed to get 10mph (yes 10) on plane. No tabs could get to 18 mph on plane. That's crazy. She used to butt-tuck at less than 28 mph.

Hope that answers your questions. If you need a 3x16x18.5 I have some for sale.
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Old 09-13-2019, 06:05 PM
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I’d like to try some 4 blades myself. That’s what the boat needs.
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