ride plate edge.
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ride plate edge.

  1. #1
    I'm No Expert Shaun's Avatar
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    Default ride plate edge.

    I'm curious about somthing. If i take my rideplate and bold it to the shoe (tight) and dont hook it to the bowl the rideplate angle is exactly the same (+/- 1*) as the keel (rounded area about 7" infront of intake opening). In order to raise the plate, with out bending it, i have to loosen the bolts that connect the rideplate to the shoe and then bolt it up. The problem i'm seeing is that if i wanted to run the rideplate way up (which is probably not desirable) the rideplate front edge starts to drop below the shoe. Even at the angle i need it the edge starts to drop. So is this normal? When bolting on the rideplate should i be tightening the front bolts (shoe side) first and then forcing the place up (which actually doesnt take too much pressure to do). or so i need the ass of the shoe machined (or rideplate) so it will allow more of a up angle. The ride plate is NOT hitting the bottom of the boat btw.

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    Senior Member GT Jets's Avatar
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    Quote Originally Posted by Shaun View Post
    I'm curious about somthing. If i take my rideplate and bold it to the shoe (tight) and dont hook it to the bowl the rideplate angle is exactly the same (+/- 1*) as the keel (rounded area about 7" infront of intake opening). In order to raise the plate, with out bending it, i have to loosen the bolts that connect the rideplate to the shoe and then bolt it up. The problem i'm seeing is that if i wanted to run the rideplate way up (which is probably not desirable) the rideplate front edge starts to drop below the shoe. Even at the angle i need it the edge starts to drop. So is this normal? When bolting on the rideplate should i be tightening the front bolts (shoe side) first and then forcing the place up (which actually doesnt take too much pressure to do). or so i need the ass of the shoe machined (or rideplate) so it will allow more of a up angle. The ride plate is NOT hitting the bottom of the boat btw.
    I would want the plate bolts retaining the plate to the shoe to be not only tight, but loctited also, all you need is for that thing to come loose...

    The front edge of the ride plate should be perfectly smooth with the adjacent surface of the shoe, maybe even a little higher for good measure..

    Could just be me though.

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    I'm No Expert Shaun's Avatar
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    Well i dont run them loose. What i've been doing is putting all the bolts in, and then running the nut all the way down on the bowl side but not tight. THen i'll wrench down the shoe side and then go back to the cradle. I'm pretty sure i'm bowing the plate alittle bit. Almost seams like my plate needs a bend in it.

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    Boat Nut sleekcrafter's Avatar
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    The pad for the ride plate is usually machined at a bit of an angle, Also good idea to stiffen the plate with aluminum angle on the sides, to minimise any additional flex.
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    Senior Member GT Jets's Avatar
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    Needs to shimmed or remachined IMHO...The plate should be flat to the shoe no matter what.

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    Quote Originally Posted by Quickjet View Post
    Put a 300 on the back of it, Flywheel it and a nosecone. $15,000 later you'll have a 65 mph pile of shit......

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    I'm No Expert Shaun's Avatar
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    The pad looks to be machined at angle, looks like it just needs more angle. Could be this shoe (tappered) because i didnt have as much of a issue with it when i had a back-cut shoe.

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    TEN THIRTY ONE RCB19's Avatar
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    From what you describe it sounds like you need to need to machine the plate mounting pad on your shoe a little more. If your plate is bending a lot you can machine a little more angle into the plate mounting pad to relieve some of the bending stress. I had to do this to one of my shoes since I am running 5* up on my plate. Be careful when doing this so you don't remove too much. The more material removed moves your plate higher toward keel meaning less potential lifting from your plate.
    RCB

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    MLC - Mid Life Crisis probablecause's Avatar
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    Why do people drill and tap their bowls vs. doing something like this cradle?


    Just my opinion, but maybe it's time for the government to take down the bird feeder!


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    Senior Member GT Jets's Avatar
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    Quote Originally Posted by probablecause View Post
    Why do people drill and tap their bowls vs. doing something like this cradle?

    Just my humble opinion that it's because sometimes the ridplates don't always reach the end of the bowl, if that rideplate was just an inch shorter, it would not be able to mounted that way...

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    Quote Originally Posted by Quickjet View Post
    Put a 300 on the back of it, Flywheel it and a nosecone. $15,000 later you'll have a 65 mph pile of shit......

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    Senior Member lbhsbz's Avatar
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    Quote Originally Posted by probablecause View Post
    Why do people drill and tap their bowls vs. doing something like this cradle?

    Cuz the clamps cause too much drag

    I'm using a HTP rideplate and shoe, and if I made mine like yours, the bracket would miss my rideplate by about an inch, so I just used the HTP saddle and drilled/tapped the bowl.

    how long is your ride plate?


    Shaun, Do you have any angle on your plate to stiffen it? I added some angle from about 1/2" behind the intake all the way to the end, and when you snug it to the bowl, the bend will be isolated between the back of the intake/transom and where the angle begins.
    Last edited by lbhsbz; 01-03-2010 at 08:36 PM.

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    MLC - Mid Life Crisis probablecause's Avatar
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    Quote Originally Posted by lbhsbz View Post
    Cuz the clamps cause too much drag
    I'm using a HTP rideplate and shoe, and if I made mine like yours, the bracket would miss my rideplate by about an inch, so I just used the HTP saddle and drilled/tapped the bowl. how long is your ride plate?
    I just saw it on the internet but even with the saddle, you are going to have to add shims to it anyway, aren't you?

    Just my opinion, but maybe it's time for the government to take down the bird feeder!


    Quote Originally Posted by Rexone;
    Try to ignore the haters, they are everywhere, just as in life.
    Quote Originally Posted by Pronstar;
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    Just a thought. But when i first ground my hull to fit the plate i didnt take enought away. So when i went to bolt the plate to the shoe( yes mine has an angle cut in it) it would hang below the shoe. Ground some more from the hull and bam it fit perfect.

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    Members only MAXIMUS's Avatar
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    Quote Originally Posted by Shaun View Post
    Well i dont run them loose. What i've been doing is putting all the bolts in, and then running the nut all the way down on the bowl side but not tight. THen i'll wrench down the shoe side and then go back to the cradle. I'm pretty sure i'm bowing the plate alittle bit. Almost seams like my plate needs a bend in it.
    Saun what you are seeing is called rocker. If it bowed the other way it would be a hook (no good) a little rocker I don't believe will hurt. Now I have talked with Jack & he recommends the plate to be somewhat straight. But the reality is it won't be. If you find the happy spot & it has a touch of rocker, then you decide to machine the pocket of the shoe to make the plate flat you just changed your set up again & will most likely disrupt the ride . Also with the stiffeners on the plate it will concentrate it to the front of the plate & actuall make a nice transition of angles. Water likes to flow on smooth surfaces and radiuses. If you put a break like a sharp angle change between the shoe & plate it will tend to blow the water off. My 21 had a nice rocker in it & when I machined it out to make it better I lost over 10mph right out of the gate.

  16. #14
    I'm No Expert Shaun's Avatar
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    Well i figured out some of my problem. The new shoe was about .010 wider than my existing shoe. When trying to get the shoe to fully seat it wouldnt in the rear and i couldnt see this until i took a closer look. I buzzed off alittle of the sides and it now sits as it should. My pad puts my rideplate at 1* up now. Jack said he thinks 4* up would be a good starting point for my v-bottom and this is what i ran at parker the last trip with the tappered shoe he loaned me. Still though to get the ride plate up at 4* there is going to be a good amount of force on that plate. Jack said he would take a look at it for me to make sure i got everything setup correctly so i'm going to drag it up to him probably today or tomorrow just for peice of mind.

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