Lessening a porpoise
03-07-2018 | 06:58 PM
#12
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Joined: Jan 2002
Posts: 4,612
Likes: 7
From: ALTO, MI
spinning then out will give you more transom lift and probably kill any porpoise but it will probably kill a few MPH.
With a Bravo drive it is easy to test all you have to do is swap props and run the shifters backwards.
You can't do that can you - you have to swap transmissions right?
With a Bravo drive it is easy to test all you have to do is swap props and run the shifters backwards.
You can't do that can you - you have to swap transmissions right?
Last edited by Tinkerer; 03-07-2018 at 07:01 PM.
03-07-2018 | 07:09 PM
#13
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Joined: Jul 2009
Posts: 8,527
Likes: 706
From: Taunton Ma
spinning then out will give you more transom lift and probably kill any porpoise but it will probably kill a few MPH.
With a Bravo drive it is easy to test all you have to do is swap props and run the shifters backwards.
You can't do that can you - you have to swap transmissions right?
With a Bravo drive it is easy to test all you have to do is swap props and run the shifters backwards.
You can't do that can you - you have to swap transmissions right?
03-07-2018 | 09:16 PM
#15
Registered
Joined: Jan 2002
Posts: 4,612
Likes: 7
From: ALTO, MI
At least that is easier than swapping trans.
My 34 Scarab had Bravo drives. I tried just about everything to get better handling and top speed. The boat handled better at slow speeds with the props turning out but it ran bow down.
With the props turning in I gained about two MPH and handled better but slow speed suffered. labbing the props will allow you to run less blades and or higher drives.
With my 26 Daytona I am able to run 4 blade props with a -3 Imco drive and the props are 2 inches above the lowest point on the hull. Labbing the props helped noticeably for the boat to get on plane.
My 34 Scarab had Bravo drives. I tried just about everything to get better handling and top speed. The boat handled better at slow speeds with the props turning out but it ran bow down.
With the props turning in I gained about two MPH and handled better but slow speed suffered. labbing the props will allow you to run less blades and or higher drives.
With my 26 Daytona I am able to run 4 blade props with a -3 Imco drive and the props are 2 inches above the lowest point on the hull. Labbing the props helped noticeably for the boat to get on plane.
