Project Chris Craft Scorpion 390

[jetcruzr]

Just curious , when you did your layup on the stringer was your largest piece of fabric first ------------------??

Hey Artie,

The answer to your question is no. My first tab was about 3 inches wide of the stringer, the next was overlapping the first by about 2 inches, then the third layer overlapped the rest by about an inch. Now you have me wondering. Is this not correct? I have always been told that every layer needs to make contact with the surface that you are bonding to???? Again, I am not a pro, as you can see. I welcome your input.

 

[SteveDavid]

Hey Tom
Have enjoyed following your progress. Your tenacity is heartwarming
Looking forward to the photos thru completion.
Steve

 

[old377guy]

Yeah, Artie, I'm hoping that jet did it right too, cause that's what I've heard and done - what's the skinny?

 

[Donskihp]

OK! I have to show my ignorance here! Resin Infusion? is that different from vacum bagging? If you are pumping in resin wouldn't you end up with too much resin in the final product?

 

[Donskihp]

Gotta admit you have come a long way and its looking Good

 

[jetcruzr]

OK! I have to show my ignorance here! Resin Infusion? is that different from vacum bagging? If you are pumping in resin wouldn't you end up with too much resin in the final product?

Hey Don, good question.

Resin Infusion an additional technique that can be used while vaccuum bagging, but is completely separate. With the infusion process, all of the layers of dry cloth are stacked neatly over the part and held in place with a very light bit of adhesive spray. Then a layer of peel ply (a parting fabric) is placed over the laminate stack. Next is a layer of perforated plastic material called transfer media is installed. The transfer media allows the resin to flow freely throughout the laminate stack. This is where you would normally have a layer of quilting in a normal vaccuum bagging job. Then spiral wrap is installed to act as a manifold to distribute the resin. Once we have full vaccuum applied to the stack, we systematically open and close resin feed lines that are connected to the spriral wrap manifold, thus controlling the "resin front" throughout the wetout process. Once the part is completely wetted out, we shut off the supply of resin and let the bag do it's job until the resin kicks. So in a nutshell, we do not have excess resin, because we are only allowing enough resin into the bag to wet out the part. Keep in mind that the stack is super compressed to nearly 15psi, (one atmosphere of pressure being applied externally due to the absence of that atmosphere inside the bag) so there is much less space for resin to occupy. This compressing of the part also acts similar to the forging process of a piece of steel. So, not only is the part lighter due to the lack of excess resin, but it is like having a forged stringer instead of a cast stringer. The only real difference between vaccuum bagging a hand layup and resin infusion, is that it makes for a much neater job, without having to slather all the resin by hand. It also saves time with fitting of the layers of cloth. Once you lay the cloth and fit it to the part, it stays there for good. Another huge advantage is that it gives you plenty of time to get the bag working without having to fight the clock and having resin kickoff before you get the bag installed. Again, as I have said before, I am not a professional. Any of our pro's, feel free to chime in if I am incorrect on any of my explanation.

Thank you for your interest in my project!

Tommy

 

[jetcruzr]

An added note about time saving. Then entire wetout process took less than 30 minutes. Yes, it takes longer to setup the sytem for infusion, but once you open the feed lines, your part is completely wetted out very quickly.

 

[Donskihp]

Thanks for the explanation. And keep the pics comming on your progress

 

[Ratickle]

And get that last stringer in!!!!!!

 

[old377guy]

And get that last stringer in!!!!!!

Ah stringer, schminger, who cares? Pimp of the Nation seemed to do fine with some extra turf carpet in the cockpit:biggrinjester:

 

[MOBILEMERCMAN]

Hey Artie,

The answer to your question is no. My first tab was about 3 inches wide of the stringer, the next was overlapping the first by about 2 inches, then the third layer overlapped the rest by about an inch. Now you have me wondering. Is this not correct? I have always been told that every layer needs to make contact with the surface that you are bonding to???? Again, I am not a pro, as you can see. I welcome your input.

I suspect Artie will say largest piece first. So it makes the most contact for the best bond.

Hey Artie are you still mad at me? I hope not.

Tommy keep up the good work. Your work is beautiful. I feel motivation building for my project.

 

[MOBILEMERCMAN]

I love the Apache wear. More motivation.

 

[jetcruzr]

I suspect Artie will say largest piece first. So it makes the most contact for the best bond.

Hey Artie are you still mad at me? I hope not.

Tommy keep up the good work. Your work is beautiful. I feel motivation building for my project.

Thanks Jimmy, I appreciate the compliment! I sure do miss coming to Austin and hanging with you guys!

 

[Ratickle]

Thanks Jimmy, I appreciate the compliment! I sure do miss coming to Austin and hanging with you guys!

You must be sniffing too much resin!!!!!


Sure could use one (or two) of his Margaritas!!!!!!

 

[jetcruzr]

You must be sniffing too much resin!!!!!


Sure could use one (or two) of his Margaritas!!!!!!

Last time I was in Austin with Jim, he introduced me to "Michelatas", a Bloody Mary with beer instead of liquor. We met up with Clark (Griswold on SOS) and had a few of these tomato flavored beers for lunch. Later on we went to a place where Jim introduced me to Jalapeno Margaritas at a cool place called Vivo. I must admit that both of these drinks sounded terrible, but I figured that since Jim is the undisputed Margarita Master, he would not steer me wrong. Both drinks were actually quite good. Perhaps one of the best though, was at Jim's new house. He lined up at about a dozen different tequilas and we sampled each one of them. It was really cool to actually take time taste each one and as opposed to doing a quick shot with salt and lemons to kill the taste. I have a much better appreciation for the flavor of tequila now. At the time, I was going to Austin almost every week for work, so having Jim to entertain us made being out of town for work much more interesting. My co-workers actually got a ride on Jim's boat, but I am still waiting!

 

[MOBILEMERCMAN]

My co-workers actually got a ride on Jim's boat, but I am still waiting!

I forgot about that. You got your buddies a ride. Lucky for them.

I hope you get a chance to come down again. You need to check out Lucky's house and sample my new favorite Anejo

 

[old377guy]

I've got a n aquaintance in San Rafael CA thats a tequila afficiando and is part of some online tequila group. They also have a place or an event that they hang at; ring any bells?

 

[Ratickle]

PeteB was talking about the Jalapeno Margaritas when he was in Austin with Jim too.......

 

[Offshore Ginger]

Hey Artie,

The answer to your question is no. My first tab was about 3 inches wide of the stringer, the next was overlapping the first by about 2 inches, then the third layer overlapped the rest by about an inch. Now you have me wondering. Is this not correct? I have always been told that every layer needs to make contact with the surface that you are bonding to???? Again, I am not a pro, as you can see. I welcome your input.

Tommy , looking good , and your lay-up is just fine along with the sequence . Talked with Rolland last week at Plasco about ordering some more resin, and just curious are you using there infusion resin .

 

[Offshore Ginger]

I suspect Artie will say largest piece first. So it makes the most contact for the best bond.

Hey Artie are you still mad at me? I hope not.

No Jim just the opposit of what you suggested , and when ever i do a lay up i use multiple layers of fabric staggered in this sequence small /large / larger thus making your foot print or sole bigger with each piece of fabric giving your repair ( lay- up ) more structural integrity or strength considering your lay-up will only be as strong as your weakest link meaning if you do your lay-up as you suggested your weakest link will be your first piece of fabric with just two smaller pieces of fabric on top , and no jim i am not mad at you ........................Ha Ha Ha , and to tell you the truth i thought you were mad at me .