1987 Aquasport CCP222

[fishinonthebrain]

What drawing program are you using? I was thinking of getting one to use myself. You know that is crazy for me to say that. Since I spent to may years using a drawing board and then a computer, to do my designs on. I told the guys at work. I never wanted to see another design program again.  

The software is Graitec and it is integrated with audocad and is designed for structural steel. All I did with this drawing is draw everything in steel plate which would be no different than plywood, coosa, or nidacore for the layout or design of the project.

I hate when new software comes out too because there can be such a learning curve but usually the new stuff is a time saver once you learn how to use it.

[fishinonthebrain]

Great rendering!  Would you consider making the bracket wider to get more interior volume of to help provide floatation?  I saw what the Seacraft guy did  and wondered why on a custom build you don't go as wide as possible to help offset the weights/moments of moving the engine close to 30 inches aft.

Really cool!  Now, if we could convince you that you need the practice drawing so how 'bout trying for a stern shape of the Osprey    

I didn't want to stray to far from their design since their design is proven.  :(


This design was relativly easy but when you talk about anthing curved meeting a compounded angle talk about complicated.

[fishinonthebrain]

Laid out all the panels out of 3/4" Coosa.





The software used will make drawings of each panel with dimensions. Makes it easy to for layout.





Screwed all the panels together might change the back panel the engine hangs on it looks a little bulky.





Back side where engine will hang off.

[gran398]

Very nice!

Question, and please don't take this the wrong way....structural engineering, torque, stress, HP rating etc....

Manufacturers like Armstrong and Gil have to meet codes and standards, ratings, liability issues, etc.

Asking only in terms of assistance and another train of thought....your work is superb

[fishinonthebrain]

Very nice!

Question, and please don't take this the wrong way....structural engineering, torque, stress, HP rating etc....

Manufacturers like Armstrong and Gil have to meet codes and standards, ratings, liability issues, etc.

Asking only in terms of assistance and another train of thought....your work is superb

Thanks it's good to bring up the fun stuff. Keeps people thinking and would not take it wrong. :)

I am building this for myself and don't plan to sell these to anybody so the liability will only be with my use. Good point by the way that's why I am over engineered it and made a complete box out of coosa instead of inserts like they have. Cost is definitly secondary because I don't care to look in the rearview mirror to see a 225 optimax bouncing down the interstate or lose the motor miles out to sea.

Over at classic craft the guys who have made a few of these didn't claim to have any real problems with their designs so I am not to worried with the beefier version i came up with.

[saltfly]

I assume because you used Coosa. Your not making a mould. Are you going use what you are building and glass over it ?

[fishinonthebrain]

I assume because you used Coosa. Your not making a mould. Are you going use what you are building and glass over it ?

I was thinking of 6 layers of 1708 and 2 layers of 1.5 CS outside and maybe 4 layers of 1708 inside. It was recomended to me to use polyester resin instead of epoxy due to cost and the extra strength was not really needed. I still have not decided on that issue yet. Any ideas would be appreciated.

[fishinonthebrain]

I assume because you used Coosa. Your not making a mould. Are you going use what you are building and glass over it ?

From the designs I have seen they have used coosa or samwiched plywood on the front, back, and sides why not just do the bottom too and make a complete box.

[saltfly]

There is nothing wrong with polyester resin. In fact I’m going to build one at some point. I’m going to use vinylester. I will also tell you what a friend who is a fiberglass guy told me, to use one layer of 1708, which is made at 45 degrees. Then lay the next layer opposite of the first. Which gives you a ‘v’ look to your lay up. Then put a 3rd layer of 1808, which is 90 degree over that. You will get the strongest lay up possible that way. After I ran some numbers, he is right. I’m looking forward to seeing your work as you progress. Al so I like you aproach.

[dirtwheelsfl]

Oughta be fun to fair! Whats the stringer plan? Looks good.
Good point about the layup too Salt

[fishinonthebrain]

There is nothing wrong with polyester resin. In fact I’m going to build one at some point. I’m going to use vinylester. I will also tell you what a friend who is a fiberglass guy told me, to use one layer of 1708, which is made at 45 degrees. Then lay the next layer opposite of the first. Which gives you a ‘v’ look to your lay up. Then put a 3rd layer of 1808, which is 90 degree over that. You will get the strongest lay up possible that way. After I ran some numbers, he is right. I’m looking forward to seeing your work as you progress. Al so I like you aproach.

Good point i will definitly alternate the layers like you suggested. I will read up on the vinyester too. I wish I knew about vinylester is looks to be as strong as epoxy at a fraction of the cost.

[fishinonthebrain]

Oughta be fun to fair! Whats the stringer plan? Looks good.
Good point about the layup too Salt

Staight line air sander.  

Stringer of Coosa down the middle from top to bottom. I want the stringer to be glued to the bottom on top swim platform.

[dirtwheelsfl]

I-beam effect  

[saltfly]

I’m using vinylester because that is what Tom my glass friend uses. He is also going to order all my matls. For me. He said he never uses epoxy. The cost is just to high for his costumers and vinylester is more then strong enough. Most of the boats he works on are off shore boats and none have had problem with his repairs.

[gran398]

I’m using vinylester because that is what Tom my glass friend uses. He is also going to order all my matls. For me. He said he never uses epoxy. The cost is just to high for his costumers and vinylester is more then strong enough. Most of the boats he works on are off shore boats and none have had problem with his repairs.

Epoxy can be tougher to work too. If a poor kick, stays soft. Hard to fair.