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  #1  
Old 01-21-2020, 06:49 PM
fdnytoneny fdnytoneny is offline
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Join Date: Mar 2016
Location: L.I,N.Y
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Default porpoising 26 regulator, motor rigging

my 2006 26ft regulator porpoises,.noticed the motors are at the top hole .Question? Are the cavitation plates of the motors,should be even with the hull or the armstrong bracket..if it's the bracket they are to low.....any ideas...thank you..
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  #2  
Old 01-21-2020, 09:58 PM
ford1320 ford1320 is offline
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Location: Spanish FT, AL
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It has been discussed on here many time before and is common on the 26. I would suggest raising up one mounting hole and trying four blade props. This is what I have done on my 03 model with F250s.
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Old 01-22-2020, 09:14 AM
fdnytoneny fdnytoneny is offline
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thank you ford1320......I have f250's as well...just to let you know
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Old 01-22-2020, 10:00 AM
ford1320 ford1320 is offline
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I do still have to run a bit of tab to eliminate all of the porpoising, by not like before. Want to repower with the new 4.2s which are lighter and see how much difference it makes.

Last edited by ford1320; 01-22-2020 at 10:02 AM.
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  #5  
Old 06-28-2020, 09:26 PM
Moofish Moofish is offline
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I just picked up a 2005 26FS with f250's been reading up on these 4 blade props, which models and size did you go with??
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  #6  
Old 06-29-2020, 08:02 AM
Rich53 Rich53 is offline
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On my 2006 with the 3.3L F250ís, I went with Mercury Rev4ís in 20Ē pitch.

I donít tend to run heavy, but usually full of fuel and a couple of people.

The RPM/speed curve between the old 21Ē SWS 3 blades and the Rev4 4 blades are identical, 4200 is 30 knots with motors all the way in and no tab. I raised the motors one hole.

Boat will plane down to about 22 mph with no tab, used to take tab to plane at 25, 25 is common in south Florida on the ICW, so that was important. No porpoising unless I really try and trim it out a lot.

This was the setup that Ken at Prop Gods recommended 5 years ago when I made the change, donít know if there are better props/solutions that have come out since then.
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  #7  
Old 06-29-2020, 03:17 PM
Oskey Oskey is offline
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Location: Northshore, MA
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Same story here...although I went with the Rev 4 19". Engines up one hole. Boat runs considerably better. I cruise at 4400 @ 32 knots ...boat runs better at 4700 performance wise but obviously burns a lot more fuel.

Strongly recommend you making the upgrade.
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  #8  
Old 07-01-2020, 03:17 PM
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Big Dinghy Big Dinghy is offline
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Go with ofs4 if you have 250's. I tried eco, rev4 and ofs4 and the ofs4 keeps the bow down much better and allows me to plane on one 300. I can hit 59-60. get 2.1-2.2 mph booze cruising. Motors mounted up 2 holes higher than being mounted all the way down.
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2000 26' w/F300s

Last edited by Big Dinghy; 07-01-2020 at 03:20 PM.
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