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bkplesh

  • Karma: +7/-0
Re: Mach 1
« Reply #175 on: August 27, 2007, 05:27:29 pm »
post some pictures of the back of the boat. Did it fell like you were hopping? And at what speed? or at any speed?
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hotrod56cars

  • Karma: +1/-8
Re: Mach 1
« Reply #176 on: August 27, 2007, 06:08:33 pm »
post some pictures of the back of the boat. Did it fell like you were hopping? And at what speed? or at any speed?


Yep. Bounce, bounce, bounce. At all/any speed.
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NO REGRET$ ... Arguing on the internet is like competing in the Special Olympics / no matter how good you do you're still retarded!!!!!

                                                          1978  19' Mach 1 Tunnel jet

HDriderTH

  • Karma: +12/-0
Re: Mach 1
« Reply #177 on: August 27, 2007, 07:27:35 pm »
relax man, I dont know about everybody else out there but I usualy have to take them out three or four times before I even get out of the marina! A cable or something always goes as soon as it gets wet.
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'82 Sanger Bubble deck, Blown 454....V-drive

hotrod56cars

  • Karma: +1/-8
Re: Mach 1
« Reply #178 on: August 27, 2007, 08:28:51 pm »
No worries brother  ;) I'm just telling a story here.  :D
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NO REGRET$ ... Arguing on the internet is like competing in the Special Olympics / no matter how good you do you're still retarded!!!!!

                                                          1978  19' Mach 1 Tunnel jet

beerjet

  • Karma: +81/-0
Re: Mach 1
« Reply #179 on: August 27, 2007, 09:47:42 pm »
There was a fellow over on Hot boat who has one hell of a ride . A Kachina to be exact . Ran awsome until he decided to blueprint the bottom . He gets the bottom perfect and now the thing wont stop hoping . It used to do like 86 less the laughing gas and now could only get into the 60's I think before it felt too unsafe .

Anyways , as it turns out with some video footage , the boat was actually bucking . Not your typical bow hoping but the back of the boat was the culprit bucking up and down . Went from one extreme to another with his ride plate and wedges and I still dont think he's got it figured out . He might have , I dont know . Last I remember he was putting some hook back into the bottom of the boat . Enjoy tinkering with all that wonderfull adjustable hardware . These boats are very temperamental with hardware adjustments . Good luck .

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

BAE 557

  • Karma: +2/-0
Re: Mach 1
« Reply #180 on: August 27, 2007, 10:05:10 pm »
Rod,

For what it's worth, the best setup on my Mach 1 has been:

- 2.5 degrees up angle on the ride plate

- I start my run at 2 degrees down nozzle as not to sky the nose
- Once the boat has settled down I change to 2.5 degrees up angle on the nozzle

I have an adjustable diverter stop for up and down travel

The angles posted are in relation to the keel.

Hope this helps,

-William

« Last Edit: August 27, 2007, 10:29:53 pm by BAE 557 »
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hotrod56cars

  • Karma: +1/-8
Re: Mach 1
« Reply #181 on: August 27, 2007, 11:21:14 pm »
Rod,

For what it's worth, the best setup on my Mach 1 has been:

- 2.5 degrees up angle on the ride plate

- I start my run at 2 degrees down nozzle as not to sky the nose
- Once the boat has settled down I change to 2.5 degrees up angle on the nozzle

I have an adjustable diverter stop for up and down travel

The angles posted are in relation to the keel.

Hope this helps,

-William



Very good to know info. Here's a stupid question, how do I measure the angles in relation to the keel? What tool(s)? What angle are the plates on your ride that are directly behind/on each tunnel? How do you measure the angle of the Diverter, is it also in relation to the keel?
« Last Edit: August 27, 2007, 11:25:35 pm by hotrod56cars »
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NO REGRET$ ... Arguing on the internet is like competing in the Special Olympics / no matter how good you do you're still retarded!!!!!

                                                          1978  19' Mach 1 Tunnel jet

Brad @ SCJB

  • Karma: +255/-0
Re: Mach 1
« Reply #182 on: August 28, 2007, 12:50:58 am »
to measure things in relation to the keel, get your boat (at the keel) level with a long level (3 feet or more so youre not leveling in the hook, but over it)...and use an angel finder on the ride plate like this one...



about what omar said about squirtcha?'s boat, i have followed his boat and dont know what the ultimate resolution was, but i also do remember him having worse numbers after he took the hook out.

you can find the site where he blueprinted his bottom here:

http://jetboat.homestead.com/Kidsriding.html

also some good reading about 'spooning' water (and how NOT to set an intake):

http://www.hotboat.com/forums/showthread.php?t=159348

  • Boat #1: 1978 Liberty
  • Boat #2: 1982 Eliminator Sprint
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BAE 557

  • Karma: +2/-0
Re: Mach 1
« Reply #183 on: August 28, 2007, 05:45:50 am »
Very good to know info. Here's a stupid question, how do I measure the angles in relation to the keel? What tool(s)? What angle are the plates on your ride that are directly behind/on each tunnel? How do you measure the angle of the Diverter, is it also in relation to the keel?

Brad has explained how to correctly measure angles in relation to the keel.

My tunnel extension plates are parrallel with the keel, 0 degrees.

hotrod56cars

  • Karma: +1/-8
Re: Mach 1
« Reply #184 on: August 28, 2007, 08:40:21 am »
Thanks to both of you! (Brad and BAE 557)  ;D
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Quote
NO REGRET$ ... Arguing on the internet is like competing in the Special Olympics / no matter how good you do you're still retarded!!!!!

                                                          1978  19' Mach 1 Tunnel jet

beerjet

  • Karma: +81/-0
Re: Mach 1
« Reply #185 on: August 28, 2007, 09:38:26 am »
Hopefully BAE's numbers will solve alot of your problems rod . They will at least give you a great starting point .

Rod,

For what it's worth, the best setup on my Mach 1 has been:

- 2.5 degrees up angle on the ride plate

- I start my run at 2 degrees down nozzle as not to sky the nose
- Once the boat has settled down I change to 2.5 degrees up angle on the nozzle

I have an adjustable diverter stop for up and down travel

The angles posted are in relation to the keel.

Hope this helps,

-William


Did you ever mees with the engine location ? Will rod even have to worry about something like that ?

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

BAE 557

  • Karma: +2/-0
Re: Mach 1
« Reply #186 on: August 28, 2007, 04:07:08 pm »
Hopefully BAE's numbers will solve alot of your problems rod . They will at least give you a great starting point .
Did you ever mees with the engine location ? Will rod even have to worry about something like that ?

-beerjet-

For my blown fuel application, I was told to put the engine as far back as I could get it.

bkplesh

  • Karma: +7/-0
Re: Mach 1
« Reply #187 on: August 28, 2007, 06:06:30 pm »
why? I thought it was more power, go farther forward?
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BAE 557

  • Karma: +2/-0
Re: Mach 1
« Reply #188 on: August 29, 2007, 07:26:21 am »
why? I thought it was more power, go farther forward?

I spoke to a couple of former blown fuel jet drivers, the consensus was to place the engine as far back as possible.

bkplesh

  • Karma: +7/-0
Re: Mach 1
« Reply #189 on: August 29, 2007, 05:11:36 pm »
Did they say Why?
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propless

  • Karma: +12/-0
Re: Mach 1
« Reply #190 on: August 29, 2007, 07:18:25 pm »
I spoke to a couple of former blown fuel jet drivers, the consensus was to place the engine as far back as possible.

 I was told the same thing about my Daytona. Something about keeping the weight as far back as posible so at speed the hull can trap more air for lift ?  ???
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Welcome to the club of broken boats :o  Pay here$ bend over and move along.

beerjet

  • Karma: +81/-0
Re: Mach 1
« Reply #191 on: August 29, 2007, 08:21:06 pm »
Here we are 8 pages deep and what all has exactly happened as far as a project goes ?

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

bkplesh

  • Karma: +7/-0
Re: Mach 1
« Reply #192 on: August 29, 2007, 09:04:33 pm »

 I was told the same thing about my Daytona. Something about keeping the weight as far back as posible so at speed the hull can trap more air for lift ?  ???
I was told,  to move it up with more hp. To keep the boat more balanced and helps carry the weight better. It worked good in my old jet. But what do I know. I'm still working the bugs out of my twin! ;D
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hotrod56cars

  • Karma: +1/-8
Re: Mach 1
« Reply #193 on: August 29, 2007, 09:32:53 pm »
Here we are 8 pages deep and what all has exactly happened as far as a project goes ?

-beerjet-

Either read the whole thread, ignore the thread, or maybe Brad will just delete it.


Today I fixed the plumbing so that I can attach a garden hose to the engine with re-plumbing it.
I changed the main jets from 70's to 76's.
I modified the throttle cable bracket so that the cable could actually reach full throttle.
I locked out my distributer and set timing at 36 degree's.

The engine is once again snappy as **** and with the additional throttle travel... I'm sure I added at least 20 mph to the project's W.O.T.  ;)

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NO REGRET$ ... Arguing on the internet is like competing in the Special Olympics / no matter how good you do you're still retarded!!!!!

                                                          1978  19' Mach 1 Tunnel jet

The Chaz

  • Karma: +5/-0
Re: Mach 1
« Reply #194 on: August 29, 2007, 10:36:57 pm »
Hey Rod, let me know if you need an angle finder, I could lend you mine if you need it.
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BAE 557

  • Karma: +2/-0
Re: Mach 1
« Reply #195 on: August 29, 2007, 10:55:46 pm »
Did they say Why?

The most important reason was Boat Attitude, during the run and most important during shutdown.

Marcsrollin

  • Karma: +33/-0
Re: Mach 1
« Reply #196 on: August 29, 2007, 11:16:56 pm »
The most important reason was Boat Attitude, during the run and most important during shutdown.


Did you ever have a problem with your boat porposing?
  • Boat #1: 1978 TX-19 Youngblood
  • Boat #2: 1994 24 foot Sundancer Pontoon
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Taco'd "a person or people that show up with one lake lice and a family of 50 and cram 3 people at a time on it with no disregard to boating rules or ethics. Usualy crap in toilets and throw shit paper in trash cans. Hang out at the boat ramp like its a swimming hole. Have zero insurance on anything they own and dont give two shits less about your property."

Brad @ SCJB

  • Karma: +255/-0
Re: Mach 1
« Reply #197 on: August 29, 2007, 11:43:23 pm »
here is my take on all of this weight distribution talk....dont take any of it as proven fact, just what little information I have gathered.....also, some input given from a very wise man who has been doing this for a long time....

it all depends on the application of the boat...

Drag Racing - you want everything back....this keeps the boat as dry as possible so you have less drag in the water. if you run it forward, its going to make the boat run wetter....thus causing more drag.

Circle Boat Racing - you want to balance it out. You dont want to run too dry or the boat will spin out in the turns. I cant go into much detail due to some top secret testing going on, but there is a sweet spot for a motor to be mounted that will help balance the boat out for circle boat racing.

  • Boat #1: 1978 Liberty
  • Boat #2: 1982 Eliminator Sprint
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hotrod56cars

  • Karma: +1/-8
Re: Mach 1
« Reply #198 on: August 30, 2007, 07:25:56 am »
I'm taking the Mach 1 to El Cap this morning for testing.  ;D  Wish me luck.   ;)

A winter project of mine is going to be to move the engine back and install more seating.   8)
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NO REGRET$ ... Arguing on the internet is like competing in the Special Olympics / no matter how good you do you're still retarded!!!!!

                                                          1978  19' Mach 1 Tunnel jet

hotrod56cars

  • Karma: +1/-8
Re: Mach 1
« Reply #199 on: August 30, 2007, 07:27:14 am »
Hey Rod, let me know if you need an angle finder, I could lend you mine if you need it.


Most definately.

THANKS
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NO REGRET$ ... Arguing on the internet is like competing in the Special Olympics / no matter how good you do you're still retarded!!!!!

                                                          1978  19' Mach 1 Tunnel jet

 


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