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Gas fuel proofing

Old 10-10-2016, 02:37 PM
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rpw612
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Default Gas fuel proofing

Hello,

Trying to make a decision, in clear coating a Solartex covered bipe.

Which would you choose; Polycrylic Minwax Aerosol Satin clear, or Krylon Colormaster Aerosol Satin clear?

Any and all input welcome.

Thank You to all.
Old 10-11-2016, 02:48 PM
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Originally Posted by rpw612 View Post
Hello,

Trying to make a decision, in clear coating a Solartex covered bipe.

Which would you choose; Polycrylic Minwax Aerosol Satin clear, or Krylon Colormaster Aerosol Satin clear?

Any and all input welcome.

Thank You to all.
If it were me, I wouldn't use either.

Minwax Polycrylic will turn to goo and any Krylon product, that I've used, won't hold up to raw gas.

I've been using Minwax Polyurethane, in aerosol form. The polyurethane will not turn to goo when exposed to raw gas. I do clean it up as soon as feasible, however.
Old 10-11-2016, 03:38 PM
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Originally Posted by TomCrump View Post
If it were me, I wouldn't use either.

Minwax Polycrylic will turn to goo and any Krylon product, that I've used, won't hold up to raw gas.

I've been using Minwax Polyurethane, in aerosol form. The polyurethane will not turn to goo when exposed to raw gas. I do clean it up as soon as feasible, however.
Other than the delivery system (aerosol, solvent, water) is there any difference between the Minwax polyurethanes? Are any of them more resistant to gasoline or glow fuel? Is the oil modified water-borne Minwax polyurethane any better or worse than the Rustoleum product? What are your preferred products for glow fuel resistance, taking from your comment above that spray Minwax polyu is your choice for gasoline? thank you very much.

Sincerely, Richard

Last edited by spaceworm; 10-11-2016 at 03:53 PM.
Old 10-11-2016, 04:13 PM
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Originally Posted by spaceworm View Post
Other than the delivery system (aerosol, solvent, water) is there any difference between the Minwax polyurethanes? Are any of them more resistant to gasoline or glow fuel? Is the oil modified water-borne Minwax polyurethane any better or worse than the Rustoleum product? What are your preferred products for glow fuel resistance, taking from your comment above that spray Minwax polyu is your choice for gasoline? thank you very much.

Sincerely, Richard
You speak of products of which I have no knowledge. I didn't realize that Minwax had an oil modified waterborne polyurethane. Minwax has an acrylic, which I do not recommend.

My preferred product for glow resistance is Minwax Polyurethane.

If Rustoleum has a polyurethane, I am unaware. I'm pleased with Minwax Polyurethane, so I haven't felt a need to explore other possibilities.
Old 10-11-2016, 04:24 PM
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For firewalls, I've had good luck with just epoxy (the longer the setting period the better), brushed thin it resists nitro. Butyrate Dope is pretty good for nitro fuels. Gasoline, I'm not sure, hoping epoxy resists it.

Last edited by Tom Nied; 10-11-2016 at 04:45 PM.
Old 10-11-2016, 05:25 PM
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rpw612
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TomCrump,

What spray clear satin would you suggest that is gasoline fuel proof and doesn't yellow over time?

Many Thanks
Old 10-12-2016, 09:44 AM
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Originally Posted by rpw612 View Post
TomCrump,

What spray clear satin would you suggest that is gasoline fuel proof and doesn't yellow over time?

Many Thanks
A two part automotive clear will do the job. epoxy and polyurethanes will yellow. Testing for compatibility should be done, though.
Old 10-12-2016, 10:10 AM
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rpw612
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I assume they have a satin additive, and this is applied with a spray gun only.
Does one just go to any auto part store that mixes paint?

Thanks for your patience
Old 10-12-2016, 11:09 AM
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Originally Posted by rpw612 View Post
I assume they have a satin additive, and this is applied with a spray gun only.
Does one just go to any auto part store that mixes paint?

Thanks for your patience
My local auto paint store is very helpful. They answer all my questions as best as they can. Just tell them that you want a semi gloss clear and a hardener.

Make sure that you wear a proper mask when spraying.

In the pics below, the blue Ryan is covered in Natural Solartex, and painted with auto paint, using a hardener. The red Luscombe's wings are Natural Solartex, painted with Rustoleum aerosol can, and Minwax Polyurethane clear coat.
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Old 10-12-2016, 11:30 AM
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rpw612
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Thank you,

If they don't put it in aerosol cans would a badger 400 touch up gun suffice?
Old 10-12-2016, 11:50 AM
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I use a full size gun, but a touch up gun will suffice.
Old 10-13-2016, 06:04 AM
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I'm confused. Why spray anything over a cover. All you're doing is adding weight. If it's just for a firewall use epoxy thinned with alcohol 50/50. Mine have never yellowed
Old 10-13-2016, 06:15 AM
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Originally Posted by jetmech05 View Post
I'm confused. Why spray anything over a cover. All you're doing is adding weight. If it's just for a firewall use epoxy thinned with alcohol 50/50. Mine have never yellowed
Solartex as well as the other "TEX's", although fuel-proof, will show dirt and fuel staining on their semi-porous surfaces. Coating them with a clear or pigmented finish prevents this. FWIW 91% isopropyl alcohol from the drugstore works best for me for thinning epoxy.
Old 10-13-2016, 07:05 AM
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Originally Posted by spaceworm View Post
Solartex as well as the other "TEX's", although fuel-proof, will show dirt and fuel staining on their semi-porous surfaces. Coating them with a clear or pigmented finish prevents this. FWIW 91% isopropyl alcohol from the drugstore works best for me for thinning epoxy.
Yup. Unsealed. Solartex can get dirty, just by looking at it. LOL

I forgot about this product. Nelson Hobbies sells a waterborne clear, that with the addition of their crosslinker, becomes fuel proof. It can be brushed or sprayed, and is considerably less expensive than a two part automotive paint.
http://www.nelsonhobby.com/hobby_paint.php
Old 10-13-2016, 08:09 AM
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rpw612
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TomCrump,

I'm not to familiar with clear coats. Your knowledge is appreciated.
Would brushing on the waterborne clear show brush stokes on solartex?
Wondering about a satin finish.
Trust your opinion, but probably should just ask Nelsons.

Thanks for your input.
Old 10-13-2016, 08:46 AM
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Originally Posted by rpw612 View Post
TomCrump,

I'm not to familiar with clear coats. Your knowledge is appreciated.
Would brushing on the waterborne clear show brush stokes on solartex?
Wondering about a satin finish.
Trust your opinion, but probably should just ask Nelsons.

Thanks for your input.
Thanks for the compliment.

I haven't brushed Nelson's. I would assume that it would leave some brush marks.,

I know that others have done so, and they were satisfied with the results.

Nelson's would be your best source of info. You may want to contact them, and see what they have to say.

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