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bbfsouthwind

  • Karma: +3/-0
Wanting to install wedge on pump
« on: June 27, 2009, 11:42:46 AM »
I was wanting to install a 4* wedge on my pump before this next weekend to try and get the boat to ride less wet. I was wondering what all i would need to do this? I found the wedges and a stud kit, but i was wondering how long of studs i would need and if there is anything else i would have to change to install the wedge besides the gaskets and studs?
Thanks
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bbfsouthwind

  • Karma: +3/-0
Re: Wanting to install wedge on pump
« Reply #1 on: June 27, 2009, 11:43:29 AM »
I forgot to add i do have a manual place diverter and a berkeley pump with a standard nozzle. pump is a 12jg-a
« Last Edit: June 27, 2009, 11:45:56 AM by bbfsouthwind »
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GT Jets

  • Karma: +192/-0
Re: Wanting to install wedge on pump
« Reply #2 on: June 27, 2009, 12:19:56 PM »
The biggest concern when playing with wedges is to keep an eye on the steering cable connection at the tiller, a connection swivel at the tiller will eliminate this concern.

Use blue Loctite on the stud to bowl connection and when you cit them, leave them as long as you can get away with (in case you need to play with the angles). Make sure everything is tight before testing. FWIW 4* is a lot of wedge, it is very easy to overshoot, you may want to have two wedges with you when you do the water testing. My old boat ran a 4* but you really had to be on your toes to drive it (flighty as hell) full droop and a diverter worked killer and I have not tried out the current boat yet.

I would like to put the Diverter on an override pedal, just have not had any extra time.

Good luck and don't forget to post the results...Someone may be able to use your info. for a baseline.

GT
  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

Time to man up and yank it John!  :banghead:
Ray

bbfsouthwind

  • Karma: +3/-0
Re: Wanting to install wedge on pump
« Reply #3 on: June 27, 2009, 01:29:32 PM »
Where would i get a connection swivel for the steering cable? I want to install a droop later on but don't have the money for it right now. I was looking at the place diverter brand droop that incorporates the small ride plate on it.
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bbfsouthwind

  • Karma: +3/-0
Re: Wanting to install wedge on pump
« Reply #4 on: July 05, 2009, 06:37:07 PM »
Ok, so i was looking at wedges and they say that they are for a split bowl? Will they work on my pump or not? I dont want to buy one or two of them and then take everything apart to not have them fit. Can anyone point me in the right direction? I found the swivel for the steering cable, but was wondering if it was safe to turn the cable 90* to hook it up to the swivel?
Thanks
« Last Edit: July 05, 2009, 06:40:28 PM by bbfsouthwind »
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Nordie

  • Karma: +13/-0
Re: Wanting to install wedge on pump
« Reply #5 on: July 05, 2009, 06:47:22 PM »
Ok, so i was looking at wedges and they say that they are for a split bowl? Will they work on my pump or not? I dont want to buy one or two of them and then take everything apart to not have them fit. Can anyone point me in the right direction? I found the swivel for the steering cable, but was wondering if it was safe to turn the cable 90* to hook it up to the swivel?
Thanks

If you have a jg pump then you more then likely have a split bowl...an easy way to tell is at the end of the bowl do you have bolts holding your steering nozzle on or is it all one piece? If you have bolts there then you have a split bowl...simple as that
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If im not posting..I'm pooping!

GT Jets

  • Karma: +192/-0
Re: Wanting to install wedge on pump
« Reply #6 on: July 05, 2009, 06:48:45 PM »
Ok, so i was looking at wedges and they say that they are for a split bowl? Will they work on my pump or not? I dont want to buy one or two of them and then take everything apart to not have them fit. Can anyone point me in the right direction? I found the swivel for the steering cable, but was wondering if it was safe to turn the cable 90* to hook it up to the swivel?
Thanks

As long as you are looking at wedges for a Berkeley, you are GTG, keep in mind that the hardware will be an issue because of the different lengths required.

As far as the cable turning 90*, yes it's cool, however, turn it to the right if you can (clockwise looking at it from the back), the reason is, that is the way the cable is wound and it will be easier on the cable core....

GT
  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

Time to man up and yank it John!  :banghead:
Ray

bbfsouthwind

  • Karma: +3/-0
Re: Wanting to install wedge on pump
« Reply #7 on: July 05, 2009, 06:55:53 PM »
Ok, great. Thats what i needed to know. I will probably order a 2* and a 4* along with a swivel and new gaskets, studs and angled washers. After i repair my crack in the bottom of my boat  >:(
« Last Edit: July 05, 2009, 09:03:34 PM by bbfsouthwind »
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bbfsouthwind

  • Karma: +3/-0
Re: Wanting to install wedge on pump
« Reply #8 on: July 05, 2009, 09:04:22 PM »
One last thing  ;D Has anyone here used the place diverter brand droop snoop with the bolt on ride plate on it? If so what were the results?
Thanks
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Jetaholic

  • Karma: +3/-0
Re: Wanting to install wedge on pump
« Reply #9 on: July 08, 2009, 08:11:09 AM »
This isn't why you run a wedge.

Not word for word, but verbatim, as Duane from HTP explained it to me:

Wedges are basically a calibration tool. Droop snoots add 2 bends in the water flow path...one where the droop attaches to the bowl and a second one at the nozzle mount (most droops have a +7.5* nozzle pin angle, which adds the 2nd bend in the water flow path). Usually when the diverter is in the "best MPH" position, it's angled relative to the front half of the diverter nozzle. This creates a 3rd end in the water flow path. The purpose of the wedge is to allow the diverter to be dead straight in the "best MPH" position, eliminating the 3rd bend in the flow path.

What you do is you run your boat at WOT to get the max speed, then find what diverter position gives you your best MPH.

From there you put it back on the trailer and place the nozzle in the position that gave your best MPH.

If the nozzle is DEAD STRAIGHT in this position, you don't need a wedge. If not, then follow these steps:

Referencing off of the keel, use an angle gauge to find what angle the diverter is at in the "best MPH" position.

Once this angle is found, find the angle of the diverter in the "dead straight" position.

The difference between the two is the amount of wedge you need. If the "dead straight" position is lower than "best MPH" position, you wedge up by the difference, and vice versa.
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To err is human, to forgive divine...except for running Fords ;D

F - Found
O - On
R - River
D - Dead

GT Jets

  • Karma: +192/-0
Re: Wanting to install wedge on pump
« Reply #10 on: July 08, 2009, 08:50:13 PM »
This isn't why you run a wedge.

Not word for word, but verbatim, as Duane from HTP explained it to me:

Wedges are basically a calibration tool. Droop snoots add 2 bends in the water flow path...one where the droop attaches to the bowl and a second one at the nozzle mount (most droops have a +7.5* nozzle pin angle, which adds the 2nd bend in the water flow path). Usually when the diverter is in the "best MPH" position, it's angled relative to the front half of the diverter nozzle. This creates a 3rd end in the water flow path. The purpose of the wedge is to allow the diverter to be dead straight in the "best MPH" position, eliminating the 3rd bend in the flow path.

What you do is you run your boat at WOT to get the max speed, then find what diverter position gives you your best MPH.

From there you put it back on the trailer and place the nozzle in the position that gave your best MPH.

If the nozzle is DEAD STRAIGHT in this position, you don't need a wedge. If not, then follow these steps:

Referencing off of the keel, use an angle gauge to find what angle the diverter is at in the "best MPH" position.

Once this angle is found, find the angle of the diverter in the "dead straight" position.

The difference between the two is the amount of wedge you need. If the "dead straight" position is lower than "best MPH" position, you wedge up by the difference, and vice versa.

Almost agree with all of this.... :-\

While tuning for top speed is definately on way to utilize wedges, it is certainly not the only reason for them. Sometimes a jet boat just handles like crap and get severe bow steer or gets flighty in the ass  :D  The addition of wedges can correct some of these issues, bbfsouthwind does not have a diverter, otherwise he would not need to wedge up to get the hull to air out a bit....

The other reason for wedging is for fine tuning or dialing in the actual thrust height (not to be confused with angle) of a droop. Hopefully the angles end up close on the droop, but can be way off depending on the setup......

Not trying to start a major debate, but wedging is not always about top speed, as often it is for correcting handling issues...

GT
  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

Time to man up and yank it John!  :banghead:
Ray

jet boat performance

  • Karma: +25/-0
Re: Wanting to install wedge on pump
« Reply #11 on: July 08, 2009, 09:03:03 PM »
often it is for correcting handling issues...

GT

Good info above , Wedge's are excellent and valuable "tools" to correct and adjust a plethera of issues on jet and hull set ups , sell and use them by the dozens Tom 
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Jetaholic

  • Karma: +3/-0
Re: Wanting to install wedge on pump
« Reply #12 on: July 09, 2009, 03:10:37 PM »
So in other words, they are commonly used as "band-aids" to cover up other issues that could be corrected by other means?
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To err is human, to forgive divine...except for running Fords ;D

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R - River
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beerjet

  • Karma: +81/-0
Re: Wanting to install wedge on pump
« Reply #13 on: July 09, 2009, 03:27:54 PM »
So in other words, they are commonly used as "band-aids" to cover up other issues that could be corrected by other means?
Just like some people say cav plates are band-aides for an inproperly set up boat .
Hulls from one to another are not perfect and will always require something.

-beerjet-
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i dont but im all for stuffin shit in her ass to make her go away :-*

bbfsouthwind

  • Karma: +3/-0
Re: Wanting to install wedge on pump
« Reply #14 on: July 09, 2009, 04:56:50 PM »
I do have a place diverter on the boat. I have the pump apart right now, cleaning it up and stripping the paint, polishing a few things while its down. I was going to experiment with a wedge to see if the boat will run any faster than it does right now. But i might not need one, i will probably get someone to take a picture of the boat with the diverter up so i can see how wet it rides. Oh and the boat runs the fastest with the diverter 1 notch from all the way up.
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GT Jets

  • Karma: +192/-0
Re: Wanting to install wedge on pump
« Reply #15 on: July 09, 2009, 06:39:02 PM »
I do have a place diverter on the boat. I have the pump apart right now, cleaning it up and stripping the paint, polishing a few things while its down. I was going to experiment with a wedge to see if the boat will run any faster than it does right now. But i might not need one, i will probably get someone to take a picture of the boat with the diverter up so i can see how wet it rides. Oh and the boat runs the fastest with the diverter 1 notch from all the way up.

Wedges will not do a darn thing for you if you already have a diverter, the diverter actually replaced the need for wedges in most cases, unless you have a droop, I would say you're in for an exercise in frustration. Unless you're looking to obtain more roost, I don't think you will get much more out of it.

Just my .02c. (I was under the impression you did not have any trim adjustment).

GT
  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
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If i get some free time tonight at work, ill play with it and post it for everyone to see.

Time to man up and yank it John!  :banghead:
Ray

 


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