Sheet steel tender tank sealant
- Bill Shields
- Posts: 10548
- Joined: Fri Dec 21, 2007 4:57 am
- Location: 39.367, -75.765
- Contact:
Re: Sheet steel tender tank sealant
Tried that gas tank sealant stuff and it does not hold a candle to Devcon.
Called PQR or something and it peels right off...at least the one part pour it in and air dry version
Called PQR or something and it peels right off...at least the one part pour it in and air dry version
Too many things going on to bother listing them.
Re: Sheet steel tender tank sealant
a welded stainless tank inside the visible "tender tank" would be a lifetime solution as well. It could be removable as well, with bulkhead style fitting on the bottom. You would literally never have to mess with it.
Re: Sheet steel tender tank sealant
Not necessarily.
Depending on the chosen alloy, a stainless weld may be susceptible to the formation of chromium carbide in the fusion zone as the metal passes through the transformation temperature range. The resulting joint will not have the corrosion resistance of the base steel. This is true no matter the process used to fabricate the weldment.
If corrosion-resistance of a welded, stainless steel container is mandatory, one of the very-low-carbon alloys should be used. My choice for this application would be 304L (UNS 30403). The mating fittings should also be 304L.
The welding procedure itself should endeavor to minimize time in the transformation range. In other words, use enough current to weld as quickly as possible—time is more critical than absolute temperature.
———————————————————————————————————————————————————————
Music isn’t at all difficult. All you gotta do is play the right notes at the right time!
Music isn’t at all difficult. All you gotta do is play the right notes at the right time!
-
- Posts: 79
- Joined: Sun Nov 29, 2015 4:49 am
- Location: Richmond VA
Re: Sheet steel tender tank sealant
I am with hoppercar about using brass for the tender tank. Yes it was expensive but it has lasted so far 45 years and going strong. I even built a car to carry water (canteen) out of brass.
michael george
- Bill Shields
- Posts: 10548
- Joined: Fri Dec 21, 2007 4:57 am
- Location: 39.367, -75.765
- Contact:
-
- Posts: 567
- Joined: Wed Jan 07, 2004 8:04 am
- Location: Princeton, NJ
Re: Sheet steel tender tank sealant
Bill, do you use the putty or liquid version of the Devcon? Your pics look like the putty...but I don't know how thick the "liquid" is
- Bill Shields
- Posts: 10548
- Joined: Fri Dec 21, 2007 4:57 am
- Location: 39.367, -75.765
- Contact:
Re: Sheet steel tender tank sealant
Will photos can. It is brushsble for about 10 minutes
Process idms important
Grit blast
Ptimer 1
Primer 1 again
Primer 2
Devcon
Mix in a small plastic cup with Popsicle stick using exace property weight . I have plastic shot glass looking things
Spread around with small cheap paint brush (1/2)" wide or strong acid brush. You will lose bristles from the brush. Not to worry, pick them out later
You have maybe 10 minutes to work with the brush Each batch throws away brush and cup.
Cannot do everything at once because most will set up before brushed .. so small batches .
Turns tacky to touch in 30 minutes .
Repeat until all done. You can mix and work one batch right after the other. ok to have fresh brush on area joining a previous solid since it is not air dry. Ok to sit hours or days between work zones it vou get tired.
Let dry a day or two before putting water in tank to look for leaks
It you find a leak, matk it on outside. Mix up a batch and dab it on with a brush on the inside . Not to worry, flexane sticks like crazy to itself.
If you get it on where you do not want it, razor blade required to cut it off
Plug holes with screws. Masking tape works also, just be prepared to use a razor knife to define edges where tape stops and you want devcon remain.
Experiment on pieces of scrap.
Strongly suggest you get a small digital food scale to measure the ounces needed to mix. I tried by eyeballing volume and it is tough. Pouring by weight is about the best way to go. You gotta get the proportions correct or it never sets up or sets up so fast you cannot brush it.
Process idms important
Grit blast
Ptimer 1
Primer 1 again
Primer 2
Devcon
Mix in a small plastic cup with Popsicle stick using exace property weight . I have plastic shot glass looking things
Spread around with small cheap paint brush (1/2)" wide or strong acid brush. You will lose bristles from the brush. Not to worry, pick them out later
You have maybe 10 minutes to work with the brush Each batch throws away brush and cup.
Cannot do everything at once because most will set up before brushed .. so small batches .
Turns tacky to touch in 30 minutes .
Repeat until all done. You can mix and work one batch right after the other. ok to have fresh brush on area joining a previous solid since it is not air dry. Ok to sit hours or days between work zones it vou get tired.
Let dry a day or two before putting water in tank to look for leaks
It you find a leak, matk it on outside. Mix up a batch and dab it on with a brush on the inside . Not to worry, flexane sticks like crazy to itself.
If you get it on where you do not want it, razor blade required to cut it off
Plug holes with screws. Masking tape works also, just be prepared to use a razor knife to define edges where tape stops and you want devcon remain.
Experiment on pieces of scrap.
Strongly suggest you get a small digital food scale to measure the ounces needed to mix. I tried by eyeballing volume and it is tough. Pouring by weight is about the best way to go. You gotta get the proportions correct or it never sets up or sets up so fast you cannot brush it.
Too many things going on to bother listing them.
Re: Sheet steel tender tank sealant
Take a look at galvanneal. You get the protection of galvanized with a surface that takes paint well. I have a tender 30+ years old made from galvanneal. The seams were riveted and soft soldered. The sheared edges inside the tank need protection. They are covered with a two part epoxy product.
Re: Sheet steel tender tank sealant
You might consider using "Red-Kote" fuel tank liner. See this article
http://ibls.org/mediawiki/index.php?tit ... w_Oil_Tank
http://ibls.org/mediawiki/index.php?tit ... w_Oil_Tank
Re: Sheet steel tender tank sealant
Might want to consider GacoFLex LM60. It is also a 2-part urethane product that looks to be similar to the Devcon material. LM60 is designed to coat/waterproof tanks and structures and comes in a horizontal and vertical viscosities. https://gaco.com/product/gacoflex-lm60/
Ward
Ward
- Greg_Lewis
- Posts: 3015
- Joined: Wed Jan 15, 2003 2:44 pm
- Location: Fresno, CA
Re: Sheet steel tender tank sealant
Another thought is to make a plastic insert tank. The plastic can be cut on a table saw and glued together. Can be drilled and tapped as needed. Easy. Just drop it into whatever metal tank you want for the outside. Painless. Won't rot, rust or peel.
Greg Lewis, Prop.
Eyeball Engineering — Home of the dull toolbit.
Our motto: "That looks about right."
Celebrating 35 years of turning perfectly good metal into bits of useless scrap.
Eyeball Engineering — Home of the dull toolbit.
Our motto: "That looks about right."
Celebrating 35 years of turning perfectly good metal into bits of useless scrap.
Re: Sheet steel tender tank sealant
SF2900, The GacoFLex LM60 appears to be more for wood and concrete. Have you actually used it in a tender?