Jackplates on Offshore Boats
08-11-2011 | 09:52 PM
#11
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Joined: Jan 2007
Posts: 96
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From: Ft. Lauderdale, FL
probley so . but u will need lower water pickup on them to get full benettfit of the jack plats. check out www.bobsmechine.com he use to make so bad plats for hulls like yours .
http://www.bobsmachine.com/
08-11-2011 | 11:07 PM
#12
Platinum Member
Joined: Apr 2001
Posts: 10,833
Likes: 18
From: Beautiful Fort Lauderdale www.cheetahcat.com
Lots of good info so far, thank you all.
My motors are mounted on an Armstrong bracket and set to the highest holes. Problem is coming out of hole you get cavitation until getting on plane, just have to continuously throttle back until full planing and cavitation stops. Motors are also mounted as close together as possible.
Then it seems you can only trim so much before 'arching/trimming' to much and begin to deplete performance.
So what I'm thinking is adding jack plates would allow lowering motor mounting back down. This way you will still have manuevarabilty around docking, get on plane better then raise motors rather than trimming. I guess I'd also be able to run in shallower water.
Please explain what type of water pickups you need. I have low water pickups now, I guess, factory units. If having to water lower units also then the idea begins to sound worse.
I guess I also just want to run a rooster tail.
My motors are mounted on an Armstrong bracket and set to the highest holes. Problem is coming out of hole you get cavitation until getting on plane, just have to continuously throttle back until full planing and cavitation stops. Motors are also mounted as close together as possible.
Then it seems you can only trim so much before 'arching/trimming' to much and begin to deplete performance.
So what I'm thinking is adding jack plates would allow lowering motor mounting back down. This way you will still have manuevarabilty around docking, get on plane better then raise motors rather than trimming. I guess I'd also be able to run in shallower water.
Please explain what type of water pickups you need. I have low water pickups now, I guess, factory units. If having to water lower units also then the idea begins to sound worse.
I guess I also just want to run a rooster tail.
08-12-2011 | 03:09 AM
#13
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Joined: Dec 2002
Posts: 896
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From: Salcombe, Devon, UK
With respect there is information missing here - speed is a critical factor! If it isn't going fast enough to begin with jackplates aren't going to make much difference! We have broken a few and Stainless Marine are the strongest by far - not an issue if you're not going to push the boat hard.
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If it's too loud you're too old!
BananaShark Racing
British Champions 2005!
08-12-2011 | 05:27 AM
#14
Gold Member
Joined: Apr 2010
Posts: 1,988
Likes: 212
From: Rochester, NY
Lots of good info so far, thank you all.
My motors are mounted on an Armstrong bracket and set to the highest holes. Problem is coming out of hole you get cavitation until getting on plane, just have to continuously throttle back until full planing and cavitation stops. Motors are also mounted as close together as possible.
Then it seems you can only trim so much before 'arching/trimming' to much and begin to deplete performance.
So what I'm thinking is adding jack plates would allow lowering motor mounting back down. This way you will still have manuevarabilty around docking, get on plane better then raise motors rather than trimming. I guess I'd also be able to run in shallower water.
Please explain what type of water pickups you need. I have low water pickups now, I guess, factory units. If having to water lower units also then the idea begins to sound worse.
I guess I also just want to run a rooster tail.
My motors are mounted on an Armstrong bracket and set to the highest holes. Problem is coming out of hole you get cavitation until getting on plane, just have to continuously throttle back until full planing and cavitation stops. Motors are also mounted as close together as possible.
Then it seems you can only trim so much before 'arching/trimming' to much and begin to deplete performance.
So what I'm thinking is adding jack plates would allow lowering motor mounting back down. This way you will still have manuevarabilty around docking, get on plane better then raise motors rather than trimming. I guess I'd also be able to run in shallower water.
Please explain what type of water pickups you need. I have low water pickups now, I guess, factory units. If having to water lower units also then the idea begins to sound worse.
I guess I also just want to run a rooster tail.
For what it's worth, here's my opinion. Check with the boat's manufacturer first. They've probably got some experience here. It might be as simple as trying a set of props with more blades to get you the best of both worlds. If you do add jack plates on the back of a bracket, you may over-stress the bracket because that will be a ton of setback.
08-12-2011 | 03:31 PM
#15
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Joined: Dec 2000
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From: eden nc
