Thad Allen's Apache + The Birth of the Cheetah Cat
05-09-2010 | 11:37 AM
#183
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From: Beautiful Fort Lauderdale www.cheetahcat.com
I will show a couple pictures of the Bagging without giving up too very much of what I did and how it was done.Briefly since I was working alone except for my small helper, the boat hull was divided into 6 parts; the sides, the sponson bottoms and of course the tunnel so I had a place to stand while doing one side.I did not have a chance yet to build a proper glass cutting table there was no spare time.
The sides and tunnel were 3 layers of Glass fabric , The running surface was 7 layers (bunch of uni also) Now this plus the peel ply,Breather and Bag had to go on and vacuum established with some time left for the for the excess resin to come up through the peel ply and into the breather then the next day into my dumpster where it belongs.
I Always use Large Vacuum pumps ( another story) in this shop I had a big Ingersoll Rand Piston Duplex unit as my source and the vacuum channel running across the actual work was spaghetti cut 11/2" pvc pipe in the event of a small local leak the pressure stayed exactly the same across the panel being done.
The fabric was cut and weighed then a corresponding weight in resin was prepared , The gel time was set for @3 1/2 Hours since I was alone.
That water bottle manometer is a very accurate way to measure small critical vacuum levels especially when using a low viscosity resin that did not like anything over 3HG when wet bagging I have made those tubes out of 8' fluorescents before, take some tacky tape and presto.
Last Bag going down Here, My helper left his car parked by the glass drop box
The sides and tunnel were 3 layers of Glass fabric , The running surface was 7 layers (bunch of uni also) Now this plus the peel ply,Breather and Bag had to go on and vacuum established with some time left for the for the excess resin to come up through the peel ply and into the breather then the next day into my dumpster where it belongs.
I Always use Large Vacuum pumps ( another story) in this shop I had a big Ingersoll Rand Piston Duplex unit as my source and the vacuum channel running across the actual work was spaghetti cut 11/2" pvc pipe in the event of a small local leak the pressure stayed exactly the same across the panel being done.
The fabric was cut and weighed then a corresponding weight in resin was prepared , The gel time was set for @3 1/2 Hours since I was alone.
That water bottle manometer is a very accurate way to measure small critical vacuum levels especially when using a low viscosity resin that did not like anything over 3HG when wet bagging I have made those tubes out of 8' fluorescents before, take some tacky tape and presto.
Last Bag going down Here, My helper left his car parked by the glass drop box
Last edited by Steve 1; 05-10-2010 at 09:34 PM.
05-09-2010 | 11:40 AM
#184
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From: Beautiful Fort Lauderdale www.cheetahcat.com
The next Day,removing the screws that fasten the frames to the base so the hull can be turned upright and the fixture removed.
Last edited by Steve 1; 05-10-2010 at 09:35 PM.
05-09-2010 | 11:53 AM
#187
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From: Beautiful Fort Lauderdale www.cheetahcat.com
Fixture out after removing a ton of screws by hand and now Inspecting the Hull Shell,You can also see how the Core worked out in the tunnel, I beat the 500 pound mark by a fair bit BTW
Last edited by Steve 1; 05-10-2010 at 09:37 PM.
05-09-2010 | 11:54 AM
#188
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From: Beautiful Fort Lauderdale www.cheetahcat.com
This project was constantly on the scales after removing the fixture, Now up till that point I was like a madman wiping and sanding the laminate and smallest resin drip, the way the glass was layered into the hull layup avoiding any extra fairing material being needed,I used Danny's scales which I knew were accurate, I could not mention the weights to anyone as they would not believe me
Last edited by Steve 1; 05-10-2010 at 09:37 PM.
