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AQUAHOLIC

  • Karma: +7/-0
Small Package is under way
« on: March 26, 2012, 02:07:51 PM »
Well as most of you know I have been doing the reserach on building a mini jet. So i can be an offical member of this club again. lol

anyway now i have the hull, pump, motor everything i need i have except labor time. So now it just a matter of elbow grease. The pump is in good hands at JBP with tom. He has taken it as a personal project and is pretty excited about the build.

My initial plan was to put the biggest jet ski engine i could find in this thing but the little berk just wont handle any more than 75hp and that is pushing it. It is the same internal diameter as an old Kawaski 440 stand up jet ski. So i am going to go with a 20 degree ptich and see how that works bolted up to a twin cylinder 700 that i have from a wave runner III.

well just wanted to keep you guys posted on whats going on with Project "small package" if this boat build works and is fun. I may look for another hull to drop that 1300cc 150hp jet ski set up in.
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When  you turn your boat on... does it return the favor?

CavemanX2

  • Karma: +0/-0
Re: Small Package is under way
« Reply #1 on: April 07, 2012, 07:23:06 AM »
WOW this sounds like a cool project !   ;D


i know im a newb here but ill give my $.02 if you dont mind since my main hobby is building/racing jet skis ,

first off what kind of speeds are you trying to get ? ,. im not exactly sure how a berk pump works or what the  */hp ratios are  , but i built a JS 550 jet ski  with a 750 kawi motor that pushed around 85hp ,. it had the same size pump as the 440 (128mm ?), with a 19* impeller that ski would push a true 50+ mph if you could hang on and keep the pump  loaded .,..701cc yamis put out around 70 hp so you wont be overpowering the pump too bad (if the */hp ratio is around the same as a ski) but it may cavitate on hard launches since the 701's make most of the power down low

have you thought about putting jet ski pump in it ? ,..140mm pumps are good for around 50-140 hp and can push you up to speeds of over 60 mph :D


any pics of this boat anywhere on here ??
« Last Edit: April 07, 2012, 07:30:07 AM by CavemanX2 »
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IRRebel

  • Karma: +16/-0
Re: Small Package is under way
« Reply #2 on: April 07, 2012, 09:16:18 AM »
MAN! I don't get on the site much these days, and saw this and thought Mrs. Aquaholic was.....well.....maybe expecting!

Here we're talking about a dinky boat........SO much for YOUR priorities Tony! Get to that would ya?

I think you're going to be fine. More than that, these 12J pumps we all routinely use are really only designed to handle around 500HP (Back then, that was a LOT), so I'd feel safe your 6J can handle a tad more than 70hp. Tommy'll figure it out.

You probably also figured it out already, but I'll illustrate it to the masses, Jet Ski, Wet Bike and Snowmobile engines are almost the same exact thing. These days, old Snowmobile engines from the north are a dime a dozen................. JIC any of you want to duplicate this thing Tony is prolly gonna finally hurt hisself in............

Ray
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"Life's journey is not to arrive at the grave safely in a well preserved body, but rather to skid in sideways totally worn out shouting 'Holy Shit what a ride!"---Crewcheif22 AKA Keith

CavemanX2

  • Karma: +0/-0
Re: Small Package is under way
« Reply #3 on: April 10, 2012, 01:52:20 PM »
 

i think you guys need to check this out   >:D




i dont know why i watched this one , but i think i gotta build one now except its going to have a  1100cc kawi ski motor with a 148mm pump  :screwy:


« Last Edit: April 11, 2012, 04:58:36 AM by Brad @ SCJB »
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88CARRERA

  • Karma: +6/-0
Re: Small Package is under way
« Reply #4 on: April 10, 2012, 03:39:32 PM »
im totally in!

lets all get together and build a few of the same design?
what do you guys think?

Chris
  • Boat #1: 88 carrera eclipse
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jetjunky101

  • Karma: +5/-0
Re: Small Package is under way
« Reply #5 on: April 10, 2012, 04:23:38 PM »
that looks like so much fun  >:D
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AQUAHOLIC

  • Karma: +7/-0
Re: Small Package is under way
« Reply #6 on: April 11, 2012, 07:29:29 AM »
Caveman: I am hoping to get as close to 50mph as possible. I got a 21 pitch impeller going in it at PBP right now. I plan on using the Yami 701. I thought about the jet ski pump and i have 2 here at my place to chose from but i just HAD to use the mini berk. it is way too cool to shitcan. And we are trying to do a diverter. Jet skis dont have that option

Ray: Miss Aquaholic is expecting. Our first baby boy is due in August. And just in case this yami 701 is not enough i have a seedoo 1300 sittin on deck.

I will post some pics of the project this weekend. but there is a pic or two on this sight. I am not exactly sure where i put it but i would guess under the no wake zone.
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quick olds

  • Karma: +3/-0
Re: Small Package is under way
« Reply #7 on: April 15, 2012, 12:13:06 AM »
Sick can't wait to see videos of the mini roost
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AQUAHOLIC

  • Karma: +7/-0
Re: Small Package is under way
« Reply #8 on: April 16, 2012, 08:17:41 AM »
I am hoping to have this on the water this summer.. lol got a baby on the way and i am building two other vehicles right now as well. Doing a restore on a 72 bultaco an building a myers manx for the wife.
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When  you turn your boat on... does it return the favor?

 


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