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The new compmillennia 39 cat

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Old 04-16-2015, 09:11 PM
  #41  
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love the drawings... are those fold down seats on the forward gunwales?
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Old 04-17-2015, 03:40 AM
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Yes they are designed to fit 2 people each
The idea is that between the lounge that will accomdate 2-4 people in a reclined positition and sitting 2 double flip down seats that will accomdate 4 and seating along the step up fishing platform which I will have a pad made for could create a pit style seating for up to 10 people with no problem add the 3 across llebroc seats 2 flip down seats along the transom and we can easily seat 15 plus on this 39
with the 18" draft it will back up to the sand bar nicely
We have had up to 11 on our lobstering trips so this will be nice
Of course the captain will get a Llebroc seat with armrests and foot rest !!
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Old 04-17-2015, 04:37 AM
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Default Parts and pieces

1st pict is the console face,this will be prerigged on the bench because Jim likes his rigger
2nd pict are the console sides prior to infusing
TOP SECRET CONSTRUCTION METHODS
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Old 04-17-2015, 06:52 AM
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Originally Posted by raysmith View Post
Thanks Jeff
your build on the 27 is what got my interest started in the 1st place
Thanks for being an originator not an imitator

You are giving me many great ideas for my 39 build. I'm going in a somewhat different direction but I'll touch base with you when I have more time on electronics and seats that you selected vs what went on the 27. Thanks Bud.
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Old 04-17-2015, 08:36 AM
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Awesome looking build.

Jim are you using developable surfaces everywhere to be able to construct from flat panels? Or was that inside out jig the beginning of this boat?

Those are incredible performance numbers to shoot for, but I wouldn't bet against Jim. He can build lighter than anyone I have seen.
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Old 04-17-2015, 09:21 AM
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Old 04-17-2015, 09:58 AM
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Originally Posted by Tideline Boats View Post
Awesome looking build.

Jim are you using developable surfaces everywhere to be able to construct from flat panels? Or was that inside out jig the beginning of this boat?

Those are incredible performance numbers to shoot for, but I wouldn't bet against Jim. He can build lighter than anyone I have seen.
The fact that he is not using trips or quads and carries less fuel also eliminates weight, and I believe that the narrow sponsons with pads and steps will really help too with efficiency.

But a wide windshield and a top this big going that fast is certainly a design challenge to lessen drag.

Last edited by Bullshipper; 04-17-2015 at 10:14 AM.
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Old 04-17-2015, 12:23 PM
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Originally Posted by Bullshipper View Post
The fact that he is not using trips or quads and carries less fuel also eliminates weight, and I believe that the narrow sponsons with pads and steps will really help too with efficiency.

But a wide windshield and a top this big going that fast is certainly a design challenge to lessen drag.


Stay tuned for some cool sponsoon footage..LOL....also additional fuel can easily be added..
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Old 04-17-2015, 01:18 PM
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Default windshield

Originally Posted by Bullshipper View Post
The fact that he is not using trips or quads and carries less fuel also eliminates weight, and I believe that the narrow sponsons with pads and steps will really help too with efficiency.

But a wide windshield and a top this big going that fast is certainly a design challenge to lessen drag.
Large t top but down here in sunny Florida removable acrylic panels for windshield
99% of my boating is with out a windshield
Perhaps a small wind deflector considering the cruise speed potential
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Old 04-17-2015, 01:32 PM
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I would be interested in seeing the sponson cross sections. Are they assymetrical? Are you planning on the tunnel packing air to provide lift? My Chris Cat really starts to pack air about 50 mph.

Avalon
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Old 04-17-2015, 07:40 PM
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stepped / symmetrical / with a lot of compression / and a pad aft of the step
Yes we are planning on getting lift from the compaction
we should start feeling the effects at 45 mph
the long narrow sponson design should afford the soft ride in the ruff with the step / pad / air entrapment providing the lift and LIGHT SPEED speed
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Old 04-17-2015, 07:59 PM
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Originally Posted by raysmith View Post
stepped / symmetrical / with a lot of compression / and a pad aft of the step
Yes we are planning on getting lift from the compaction
we should start feeling the effects at 45 mph
the long narrow sponson design should afford the soft ride in the ruff with the step / pad / air entrapment providing the lift and LIGHT SPEED speed
Lots of great ideas !
Windshield panels are a new one on me.
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Old 04-18-2015, 04:07 PM
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This is a very interesting project for the shop. Having built a number of cats from 19 to 65' long, none like this one which I expect to be the most efficient in fullfilling the mission statement. Ride like butter at 45 mph cruise with better fuel economy than imanagible
The 22' Morelli and Melvin design we built in 2011 was a wee bit overpowered with twin 175's,
The fact we discovered, was that once you've had Cat its hard to go back, and this is coming from someone that built a V bottom a week for more than a decade.

Despite the excess engine displacement clamped to the transom, the 22 was surpisingly fuel efficcient.

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The next bigger Cat, Jazzmans 27, we redesigned the bottom, and while we had a smaller 150 hp engines, and the boat had 5 feet more cockpit length, the speed was equal to the 22. We did a builders seatrial off of Oregon inlet and I needed the extra car seat for the trip so I used my Wife's minivan. You could tell it wasn't my flat's boat towed behind without looking in the rear view mirror, but net 3600 lbs. we were legal.

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The 27 planes like a champ with one engine at half throttle.

https://www.youtube.com/watch?v=B39_9j-Zebw

We are expecting the same performance for the 39.

The next cat in the progression of builds was planned to be 34', but Ray is a keen and knowlegable owner that knows what he wants and can make decisions and has provided the momentum for the cat to be all that it can be. We have been fabricating and shipping parts over the road as wide as 21' and others as long as eighty feet recently, so a generous beam felt right. HAPPY to have the Merc 350's extra hp introduced timely to carry the extra length as 300's were the original plan.

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Last edited by Otseg; 04-19-2015 at 10:10 AM.
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Old 04-18-2015, 07:29 PM
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Originally Posted by Otseg View Post
This is a very interesting project for the shop. Having built a number of cats from 19 to 65' long, none like this one which I expect to be the most efficient in fullfilling the mission statement. Ride like butter at 45 mph cruise with better fuel economy than imanagible
The 22' Morelli and Melvin design we built in 2011 was a wee bit overpowered with twin 175's,
The fact we discovered, was that once you've had Cat its hard to go back, and this is coming from someone that built a V bottom a week for more than a decade.

Despite the excess engine displacement clamped to the transom, the 22 was surpisingly fuel efficcient.





The next bigger Cat, Jazzmans 27' we were able to redesign the bottom, and while we had a smaller 150 hp engines, and the boat had 5 feet more cockpit length, the speed was equal to the 22. We did a builders seatrial off of Oregon inlet and I needed the extra car seat for the trip so I used my Wife's minivan. You could tell it wasn't my flat's boat without looking in the rear view mirror, but net 3600 lbs. we were legal.


The 27 planes like a champ with one engine at half throttle.

https://www.youtube.com/watch?v=B39_9j-Zebw

We expecting the same for the 39.

The next cat in the progression of builds was supposed to be 34', but Ray is a keen and knowlegable owner that knows what he wants and can make decisions and has provided the momentum for the cat to be all that it can be. We have been fabricating and shipping parts over the road as wide as 21' and others as long as eighty feet recently, so a generous beam felt right. Happy to have the 350's hp to carry the extra length as 300's were the original plan.

Lol I like the donkey. This is gonna be a sweet build!
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Old 04-18-2015, 07:44 PM
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Nice.
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Old 04-18-2015, 07:55 PM
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Jim is a good guy hope he is well
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Old 04-18-2015, 08:00 PM
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Old 04-19-2015, 07:42 PM
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We are starting to get some parts for Ray's boat built and record the "as built" weights into the weights and moments study we performed before starting construction.

I took home the console door (foam cored, clear carbon inside, white gelcote outside) and weighed it on the digital bathroom scale.......69 lbs.
I did Not see that coming!

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Oh yea, I forgot. I needed my 10 year old daughter to stand on the scale with it because the scale wouldn't register the weight of the door alone. Deducting her 64 lbs, the weight of the door was less than 5 lbs, or 11.3 oz / sq ft.

I can live with that.

Mind the pence and the pounds will take care of themselves.

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Last edited by Otseg; 04-20-2015 at 09:16 AM.
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Old 04-19-2015, 09:24 PM
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That's a cut "Tare Weight" you've got there Jim.
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Old 04-19-2015, 09:51 PM
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Sub, good luck with the build, looks awesome
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