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Dec 30th, 2023
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 Jack Plate Question
#6168592
05/10/11 09:47 PM
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Joined: Nov 2010
Posts: 139
NoUseForAName
OP
Outdoorsman
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OP
Outdoorsman
Joined: Nov 2010
Posts: 139 |
I wanna get some RPM/top speed numbers for my boat to see if I need to get another prop. My boat has a jack plate in addition to the trim. When starting out, should i have the jack plate all the way down, then start trimming up? Or have the jack plate in the middle, or top, then start trimming up and go to WOT? Thank yuo all in advance.
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Re: Jack Plate Question
[Re: NoUseForAName]
#6168697
05/10/11 10:05 PM
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Joined: Sep 2004
Posts: 32,007
JustWingem
Gentleman Jack
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Gentleman Jack
Joined: Sep 2004
Posts: 32,007 |
Most important is prop shaft height in relation to the pad pending on the make model of the boat.
Check with Steve at Steves custom props.
DON'T GET CONFUSED BETWEEN MY PERSONALITY AND MY ATTITUDE. MY PERSONALITY IS WHO I AM...MY ATTITUDE DEPENDS ON WHO YOU ARE
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Re: Jack Plate Question
[Re: JustWingem]
#6171064
05/11/11 01:27 PM
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Joined: Aug 2006
Posts: 7,182
steve@S2Marine
TFF Celebrity
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TFF Celebrity
Joined: Aug 2006
Posts: 7,182 |
go to my website. click on prop shaft measurement. set your height and start testing.
really would help to know what boat/motor/setback,etc. you have.
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Re: Jack Plate Question
[Re: steve@S2Marine]
#6171202
05/11/11 02:08 PM
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Joined: Nov 2010
Posts: 139
NoUseForAName
OP
Outdoorsman
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OP
Outdoorsman
Joined: Nov 2010
Posts: 139 |
Its a Seapro sv 1900 with a Merc 125 on it. Can you please explain what you mean by setback? Thank you for your previous responses. Right now is has a 19 pitch on it, but i was told I may need to replace it with a 17. The boat will mosly be used at a lake that is 4700 feet above sea level.
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Re: Jack Plate Question
[Re: NoUseForAName]
#6172099
05/11/11 05:33 PM
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Joined: Apr 2004
Posts: 14,163
Stump jumper
TFF Guru
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TFF Guru
Joined: Apr 2004
Posts: 14,163 |
Set back is the depth of the jackplate or the set back off the transom. Is it a manual or hydraulic jackplate? What is your current top RPM? If it is a hydraulic jack then you would start on low setting for holeshot unless in shallow water. Since your rig is not a speed demon I would be looking more at holeshot and mid range performance myself.
2200 Bay Champ/200 Mercury Optimax
2017 Tundra TSS 4x4 Crewmax 5.7L
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Re: Jack Plate Question
[Re: Stump jumper]
#6172725
05/11/11 07:38 PM
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Joined: Aug 2006
Posts: 7,182
steve@S2Marine
TFF Celebrity
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TFF Celebrity
Joined: Aug 2006
Posts: 7,182 |
if your running a 19p now. and you were told you'll need a 17.
at that elevation you may need a 15p up there.
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