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Thad Allen's Apache + The Birth of the Cheetah Cat
- Thread starter Steve 1
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BAD ASS TA WS6
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Best thread I have ever read. Now on to S&F for some more!
Ratickle
Founding Member / Super Moderator
Welcome aboard. Glad you're enjoying this, as am I.
Steve 1
Contributor
The strakes were infused onto the Hull, Now the section where they crossed/floated the open vent areas necessities a three piece type construction in those areas. Not many pictures were taken of this Operation, I have a piece of the test workup around here somewhere. What I did was place a piece of supported lexan plate across the opening and the strakes were cut off on each side of the vent then they were laid back at a 65 degree angle,once that was done then 18 pieces of Unidirectional were then laid in and a piece of core placed back across the center restoring the core and the top laminate's were placed on the entire length of the strake and out on the hull (Feathered back) to bond them together once infused with the Ampreg 22 laminating Epoxy that I was using the Blue is Super Blue peel ply.
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Steve 1
Contributor
We know somewhere on the back half of the boats running surface is the area of greatest friction,Open sea bumpy water no problem but in flat water it can get sticky. So this would be the area targeted by the designer.
glassdave
Founding Member / Competitor
Steve this is some great stuff. Hey i noticed it looks like you have the inner lifting strakes running the full length of the boat all the way to the transom. What was the thought process here and has that been done on any other boats this size? Was this to work in conjuction with your steps? Just curious really as I've never seen them run all the way back like that. Keep the pics coming 
Steve 1
Contributor
There were three strakes per side ,the pair on nearest the keel were a dynamic type of Pad while the other two were providing lift as for the attitude 2-3 degrees was all I needed. I have played with this for a while and since I had the bottom well aerated I was not concerned with anything but Handling not forgetting the Eyes of the world were on this project.Steve this is some great stuff. Hey i noticed it looks like you have the inner lifting strakes running the full length of the boat all the way to the transom. What was the thought process here and has that been done on any other boats this size? Was this to work in conjuction with your steps? Just curious really as I've never seen them run all the way back like that. Keep the pics coming
Also it had a 2" ( I added a 1" layer of core inside) bottom so I could have touched up or corrected anything I did not like from testing Quickly.
Steve 1
Contributor
You are Welcome Sir.
Mad Props
New member
Steve this is some great stuff. Hey i noticed it looks like you have the inner lifting strakes running the full length of the boat all the way to the transom. What was the thought process here and has that been done on any other boats this size? Was this to work in conjuction with your steps? Just curious really as I've never seen them run all the way back like that. Keep the pics coming
We tried this on my boat it created so much lift we had to remove them. At first we left them on in the front and it was really fast but could be upset by quartering seas.
How do you figure out the location of the rear outer lifting strake and how wide.
I'm not sure of the proper terms but how do you determine how much hook or rocker on each step. When you start testing a boat like this it is a lot of work small changes can be dramatic.
Thanks so much for such interesting reading.
McCaffertee
New member
I would think that they need to be designed into the running surface and if they are put on as an afterthought, then you create problems
Why would someone purposely put a hook and/or rocker in a properly designed bottom? I think these things are done when there are problems with balance, drive height or even props.
Just my 2 cents!
Offshore Ginger
New member
DAM , Steve will you quit saying sir to everyone , if anything they should address you as sir ............. :rofl::rofl::rofl::rofl: ARTIE
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Steve 1
Contributor
Steve 1
Contributor
Steve this is some great stuff. Hey i noticed it looks like you have the inner lifting strakes running the full length of the boat all the way to the transom. What was the thought process here and has that been done on any other boats this size? Was this to work in conjuction with your steps? Just curious really as I've never seen them run all the way back like that. Keep the pics coming
Dave off thread you ever see a wing EP Boat??
Offshore Ginger
New member
Steve , i was going to leave you a PM , but i will contact you on the other side ............... Artie
Offshore Ginger
New member
Offshore Ginger
New member
Steve , just curious what is the projected speed and dry weight of the hull and deck , mated , and might we be l@@king at an all composites boat built using epoxy , S & E glass , Kevlar , Carbon fiber , vacume bagged or infusion ?
glassdave
Founding Member / Competitor
Not sure sir
, what are they? I know the Batboats run them all the way back. Artie brought up a good point to me in a PM that i mistakenly over looked. Step hulls have a very different strake araingment then straight bottom boats and often the strakes are full length. When i was looking at the one pic you posted i was just thinking about a 41 footer i just had in the shop thats got shorter strakes but its a flat bottom . . . . brain faded for a sec - Status
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