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Old May 25th, 2007, 01:40 AM   #1
87'YJ
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Default Boat guys

Lookie what I just got. I picked up a used Hydro jackplate because I have been trying to get some higher speeds. Should get my motor quite a bit higher out of the water. Now I just need to get it installed by this weekend! Paid $250 for it with all controls/gauge etc. Was pretty excited about that price



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Old May 25th, 2007, 01:56 AM   #2
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Omg!!!omg!!!omg!!lookatmeimrichihaveaboatimovedtoo hiobecauseimtogoodformichigamomg111omg11






















:tonka:
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Old May 25th, 2007, 03:18 AM   #3
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ok ok so what boat is it going on?
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Old May 25th, 2007, 07:16 AM   #4
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looks good what type of setup are you running
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Old May 25th, 2007, 07:55 AM   #5
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That should help make the boat handle better too. The higher you get the prop out of the water the less torque it has on the water and the less tendancy to make the boat chine walk.

Keep an eye on your water pressure if you don't have low water pick ups. I don't know if you read the checkmate board I sent you or scream and fly much but those guys can definately help with suggestion a good engine height to run your boat at for better speed and handling.

Also keep in mind with the weight of the engine further back you shouldn't need to trim out as much to fly the bow, so get used to it before you start getting agressive.

As a starting point I would go with your propshaft about 2" below the hull. Another thing to think about is with your prop now partially surfacing you will be able to get more RPM at the top end which will also help speed and may require a prop with more pitch.

Of course you probably thought about most of that junk LOL
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Old May 25th, 2007, 07:55 AM   #6
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Quote:
Originally Posted by hosejockey4506 View Post
looks good what type of setup are you running
I think he has a 17 or 18 foot checkmate enchanter with a johnny rude on the back.
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Old May 25th, 2007, 08:47 AM   #7
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Originally Posted by UP_ROKTOY View Post
That should help make the boat handle better too. The higher you get the prop out of the water the less torque it has on the water and the less tendancy to make the boat chine walk.

Keep an eye on your water pressure if you don't have low water pick ups. I don't know if you read the checkmate board I sent you or scream and fly much but those guys can definately help with suggestion a good engine height to run your boat at for better speed and handling.

Also keep in mind with the weight of the engine further back you shouldn't need to trim out as much to fly the bow, so get used to it before you start getting agressive.

As a starting point I would go with your propshaft about 2" below the hull. Another thing to think about is with your prop now partially surfacing you will be able to get more RPM at the top end which will also help speed and may require a prop with more pitch.

Of course you probably thought about most of that junk LOL
Actually, the checkmate board was extremely helpful. They were able to point me in the right direction with the problems I was having.
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Old May 25th, 2007, 08:50 AM   #8
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looks good what type of setup are you running
19.5" Checkmate Exciter with a new (to me) 175hp Johnson.

Been having problems when I trim the motor, the boat gets very unstable. This should hopefully solve it!

The cheapest hydro jackplate I saw, even used, was like $500-$600.
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Old May 25th, 2007, 10:27 AM   #9
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Cool, I guess, I do NOT know boats. Sounds like it is cool :tonka: We will have to come down for a ride.
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Old May 25th, 2007, 10:35 AM   #10
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Originally Posted by 87'YJ View Post
19.5" Checkmate Exciter with a new (to me) 175hp Johnson.

Been having problems when I trim the motor, the boat gets very unstable. This should hopefully solve it!

The cheapest hydro jackplate I saw, even used, was like $500-$600.
Remember a boat like your's when trimmed will get "flighty" and also have a tendancy to chine walk. A higher engine height will make it less prone to chinewalk, but you will still have to "drive" the boat to avoid the chinewalking.

Ask hosejockey about driving my boat. It is not something the average person can just jump in and drive, it takes some time.

Remember this, be proactive, not reactive, most of the "driving" will come by the way of timed tugs to the wheel to the left in a single engine application. When the left side dips, hold steady, when it begins to rebound give a gentle correction to the left with the wheel. In time you will get it no problem. Furthermore make sure you have solid engine mounts and good dual cable steering or hydraulic steering if you are traveling over 60mph. SAFETY first.

That and the boat will handle much better as well with the engine not flopping all over the place.
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Old May 25th, 2007, 02:01 PM   #11
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It was worse than flighty though. I've been in the high speed fishing boats, and this was absolutely all over the place when I trimmed it. It was fishtailing at 50!
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Old May 25th, 2007, 02:41 PM   #12
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It was worse than flighty though. I've been in the high speed fishing boats, and this was absolutely all over the place when I trimmed it. It was fishtailing at 50!
fishing boats are relatively easy to drive when compared to a boat like yours.

A couple of things could have been happening.

Loose or warn motor mounts, You should not be able to "shake" your engine at all.

Steering, loose or warn, again at the minimum you should be running dual cable steering.

Also chinewalking is very common, some people say you can drive through it in certain boats, in a lightweight pad V like yours or mine you have to drive the boat as it comes up onto the pad. You will always have to work the wheel.

Try driving like I suggested, if the chinewalking (rolling side to side) gets uncontrollable, back off till the boat settles and try again....having the jackplate to get the engine a little higher will definately help as it will alleviate some of the torque from the prop and it's leverage against the boat.

The prop tries to "lift" the drivers side of the boat. As you get going faster and faster you have to balance the boat on an increasingly skinnier piece of boat.

The boats "chinewalking" is centered around the prop. as you lift the prop with the jackplate closer to the bottom of the boat it decreases the leverage the prop has on chinewalking the boat. If you go to high you lose the ability to lift the bow on some boats. Too low and chinewalking gets worse, plus you have more drag.

OK, enough of that crap, lets here results of before and after and driveability....oh, and what prop are you running now?
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Old May 25th, 2007, 04:35 PM   #13
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OK, enough of that crap, lets here results of before and after and driveability....oh, and what prop are you running now?
I'm going to take it out tonight! Of course it satrted raining right after I got the plate all installed, but its supposed to clear for tonight... I'll borrow my buddies GPS and see what kind of numbers I can hit. Also can't wait to see if it improves the overall handling (its about a 6" setback as well).

Not sure on the prop, I need to do a check on it. It came with the motor. I know thats an easy way to increase speed as well.
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