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ride plate brand differences?
- Thread starter m2ed
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Porpoising?
What makes you think the porpoising problem is due to your ride plate?
This is usually caused by the angle of your nozzle. You list you have a 1988 jet ski. They actually didn't start putting out the Seadoo until 1989. Though, the first SP was actually designed in 89.
The 89 SP should not have enough power to create the porpoise affect.
Please go over your thread and edit any issues you might see wrong with it.
If this ski is somewhere around the 98 model, then you need to look at your attitude of your nozzle. If it's VTS equipped and not working, then you need to manually set it at flush to plane or just angled up just slightly. Do not angle it down......:cheers:
What makes you think the porpoising problem is due to your ride plate?
This is usually caused by the angle of your nozzle. You list you have a 1988 jet ski. They actually didn't start putting out the Seadoo until 1989. Though, the first SP was actually designed in 89.
The 89 SP should not have enough power to create the porpoise affect.
Please go over your thread and edit any issues you might see wrong with it.
If this ski is somewhere around the 98 model, then you need to look at your attitude of your nozzle. If it's VTS equipped and not working, then you need to manually set it at flush to plane or just angled up just slightly. Do not angle it down......:cheers:
all the info i have says it's and 88. when i bought it, it also had a westcoast exhaust pipe and rev limiter. had it out last year, and more often than not it would porpoise, more so on choppy, or even slighty wavy water. so, whether it's an 88 or 89, what are my options, and is there any big differences between the brands of ride plates? i think one i was looking at was a r&d.
Year model....
They did make a 1988, but like you said, the year isn't important. But, if you'd like to be certain, look at the back on the right hand side. You'll see a series of numbers. This is the hull identification number. The last 2 digits specify the year.
The ride plate will not change anything for you and this ski. If you look at part #18, you'll see this is one piece that will affect your pumps mounting. That ring you see is the seal ring for it.
Your problem is going to be the position of your nozzle. You don't have a VTS so we'll have to figure out why your nozzle is obviously out of place.
Sometimes, this is in the linkages but you have no nozzle attitude linkages that I know of.
So, I think it's possible that your pump was removed and shimmed.
You might take a pix of the back side fo your pump and post it, let me take a look. Or, you'll need to set the ski on the trailer flat out, even plane. Then, stand back and look at the attitude of your nozzle. If it's aimed slightly up, you need to find a way to lay it out level or even with a slight downward angle.
This problem can also be caused by weight displacment. If you've loaded additional equipment toward the rear of the ski, it will cause porpoise. If your riding a second rider or if your own weight is over 180 lbs. and your riding with your center of gravity to far aft.
There are several reason for this too happen. If you can't answer any of these issues that I've listed, you can try to put a little nose weight in the ski to help hold it down.
They did make a 1988, but like you said, the year isn't important. But, if you'd like to be certain, look at the back on the right hand side. You'll see a series of numbers. This is the hull identification number. The last 2 digits specify the year.
The ride plate will not change anything for you and this ski. If you look at part #18, you'll see this is one piece that will affect your pumps mounting. That ring you see is the seal ring for it.
Your problem is going to be the position of your nozzle. You don't have a VTS so we'll have to figure out why your nozzle is obviously out of place.
Sometimes, this is in the linkages but you have no nozzle attitude linkages that I know of.
So, I think it's possible that your pump was removed and shimmed.
You might take a pix of the back side fo your pump and post it, let me take a look. Or, you'll need to set the ski on the trailer flat out, even plane. Then, stand back and look at the attitude of your nozzle. If it's aimed slightly up, you need to find a way to lay it out level or even with a slight downward angle.
This problem can also be caused by weight displacment. If you've loaded additional equipment toward the rear of the ski, it will cause porpoise. If your riding a second rider or if your own weight is over 180 lbs. and your riding with your center of gravity to far aft.
There are several reason for this too happen. If you can't answer any of these issues that I've listed, you can try to put a little nose weight in the ski to help hold it down.
Actually, an aftermarket ride plate will make a big difference in reducing porpoising. There are a few good choices. For your model, the Jet Dynamics and Ocean Pro are (IMHO) the 2 top ride plates. Not only do they hep you plane out faster, they improve cornering. The R&D and WestCoast plates for your model are extenders and are easier to install. Also good choices to reduce porpoising but, they don't improve much on cornering.
I think you will be happy with the R&D.
Chester
I think you will be happy with the R&D.
Chester
Wire4Money
New Member
I agree - I put a R&D ride plate extender on my 94 SPX, and it did a world of difference with the porposing.
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