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  #1  
Old 08-08-2018, 09:15 AM
kbalch's Avatar
kbalch kbalch is offline
 
Join Date: Jan 2005
Location: Clermont, FL
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Default "Proseal" differences?

As I'm getting ready to jump into my first -14A tank (I outsourced my -8 tanks many years ago), I'm preparing to order the necessary supplies.

I intend to purchase one of the Semco pneumatic guns and will be looking to obtain sealant cartridges for it. A couple of questions:
I think I've read all of the relevant threads around here, plus quite a few project websites. Whew. It just can't be that complicated, can it?
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  #2  
Old 08-08-2018, 09:36 AM
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jcarne jcarne is offline
 
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Location: Worland, Wyoming
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Default

3.5oz a session seems about right, maybe even a bit much. I only mixed enough for one rib at a time if I remember right. I don't know about the differences but Van's stuff is cheaper and works really good. I think Van's says it takes one quart for RV-7 tanks and there is no flippin way I got it done in that amount (and I think I have a pretty clean build on the tanks, you can check my build log on these forums here). To me this is not the place to be chincy by trying to save a few ounces. The -14 tanks are a little bigger so I would definitely plan on the need for two quarts worth.

Also, life is easier when you keep things cleaned and masked when necessary. I put multiple layers of gloves on before starting a rib. I no joke went through about 200-300 latex gloves building the tanks.
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  #3  
Old 08-08-2018, 10:44 AM
Tommy123 Tommy123 is offline
 
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Location: Naples fl
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Default Spec

If it meets the milspec the differences are negligible. I wouldn’t use anything faster than a 2. That is the useful working time. In the airlines with a big repair we’d use a 48. Yes they do offer it.
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  #4  
Old 08-08-2018, 10:51 AM
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Captain_John Captain_John is offline
 
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Ken, here is a link from a fellow builder named Paul Trotter.

https://www.rivetbangers.com/documents/tank_sealant.pdf

He thoroughly researched and wrote about the subject of sealant in detail.

Check it out. It is a wealth of information!

CJ
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  #5  
Old 08-08-2018, 11:11 AM
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1001001 1001001 is offline
 
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Quote:
Originally Posted by jcarne View Post
Also, life is easier when you keep things cleaned and masked when necessary. I put multiple layers of gloves on before starting a rib. I no joke went through about 200-300 latex gloves building the tanks.
Just beware, when masking, do NOT use Scotch tape. I will be writing a post about this in the near future (hopefullly--I still have an evening or two's work to remove the tape reidue ahead of me), but suffice to say, when you prep an aluminum surface to maximize adhesion of the sealant, you also make the Scotch tape stick like you never imagined it could stick. Don't ask me why I used Scotch tape...
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  #6  
Old 08-08-2018, 05:44 PM
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jcarne jcarne is offline
 
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Quote:
Originally Posted by 1001001 View Post
Just beware, when masking, do NOT use Scotch tape. I will be writing a post about this in the near future (hopefullly--I still have an evening or two's work to remove the tape reidue ahead of me), but suffice to say, when you prep an aluminum surface to maximize adhesion of the sealant, you also make the Scotch tape stick like you never imagined it could stick. Don't ask me why I used Scotch tape...
Good point, I might also extend that when I masked I used purple painters tape and blue painter tape. The blue was 3M, and the purple was Duck Masking brand. The purple stuff did leave a lot of residue when peeled off, luckily I discovered this before doing too much with it. Removing the residue was exactly as you say, a pain!
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  #7  
Old 08-08-2018, 06:16 PM
StressedOut StressedOut is offline
 
Join Date: Jun 2017
Location: Fullerton, CA
Posts: 93
Default

Quote:
Originally Posted by kbalch View Post
As I'm getting ready to jump into my first -14A tank (I outsourced my -8 tanks many years ago), I'm preparing to order the necessary supplies.

I intend to purchase one of the Semco pneumatic guns and will be looking to obtain sealant cartridges for it. A couple of questions:
I think I've read all of the relevant threads around here, plus quite a few project websites. Whew. It just can't be that complicated, can it?
I posted some tidbits a few months ago about what I learned about sealant. It's post #11 if you're interested. Cheap Semco sealant gun and tips about using rollers instead of popsicle sticks.
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  #8  
Old 08-08-2018, 09:04 PM
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wirejock wirejock is offline
 
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Location: Estes Park, CO
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Default Syringe

I used the big syringes. Tip is perfect. It drops into a caulk gun for more leverage. Cheap.
Most of the sealing was just tongue depressor application. The syringe gun was used to apply the bead then spread with a shaped popsicle stick.
I also used just a tad more than 1 quart of the Van's sealant.
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  #9  
Old 08-08-2018, 09:37 PM
rv7charlie rv7charlie is offline
 
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Location: Pocahontas MS
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Default

Quart ziplock bags, one per batch of roughly golf ball size. Mix in the bag, snip a corner, and use like a cake decorating bag.

One quart kit of Flamemaster from Van did two RV-7 main tanks plus two 14 gallon leading edge (3 bays) aux tanks.

Charlie
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  #10  
Old 08-08-2018, 10:16 PM
PilotjohnS PilotjohnS is offline
 
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Location: Los Angeles
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Default Just me

Quote:
Originally Posted by rv7charlie View Post
Quart ziplock bags, one per batch of roughly golf ball size. Mix in the bag, snip a corner, and use like a cake decorating bag.

One quart kit of Flamemaster from Van did two RV-7 main tanks plus two 14 gallon leading edge (3 bays) aux tanks.

Charlie
I never got good results mixing in bag. I mixed on scrap hotel key or other hard plasctic then transfered to baggie. Worked great.
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WARNING! Information presented in this post is my opinion. All users of info have sole responsibility for determining accuracy or suitability for their use.

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