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Author Topic: PEX Gas Tank Lining  (Read 1147 times)

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fabr

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PEX Gas Tank Lining
« on: July 29, 2010, 09:48:22 AM »
I have just gotten word from a rotomolder within 15 miles of here that will do 1 offs lining your fuel tank with .160-.190  cross linked polyethylene plastic. Same stuff as nearly all gas tanks are made of. First test will be my own tank. They seem to think a minimum .125 aluminum wall thickness is necessary. I'm hoping there will not be much ,if any,distortion. They are also going to do a test tank for me to dissect. Cost of doing a tank is pretty reasonable IMO (approx 75 bux) BUT there is a setup fee that could be made doable if we were to do a few at a time. At any rate I'm pretty happy to have a much safer fuel tank behind me.
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
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Grimm Reaper Racing

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Re: PEX Gas Tank Lining
« Reply #1 on: July 29, 2010, 11:43:11 AM »
I might be interested to get mine done too.
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fabr

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Re: PEX Gas Tank Lining
« Reply #2 on: July 29, 2010, 12:45:51 PM »
They'll likely have mine and the sample for dissecting worked into production end of next week or shortly after. They're a mid sized production facility. I have a good friend here that does a lot of work for them doing vacumn forming but no roto stuff. He contacted the guys there and they're interested in seeing where this might go. If we had several it will be very reasonable pricing. One offs ,a bit pricey, but if you've ever been burned or know someone who has ............................well ,for me anyway it's cheap insurance. At this point I think it would be in the range of 100 bux if we had a few to do. One offs probably 250-300. Still FAR CHEAPER than a fuelsafe cell and much safer than a welded aluminum tank by itself. I'll know more when they get this one done.
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

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"I fear the day that technology will surpass our human interaction. The world will have a generation of idiots" Albert Einstein

Carlriddle

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Re: PEX Gas Tank Lining
« Reply #3 on: July 29, 2010, 02:19:59 PM »
How about the outside finsh?  Any decision?  I like Fast's idea bestest.
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You can keep your CHANGE, I'd like to keep my DOLLAR.

fabr

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Re: PEX Gas Tank Lining
« Reply #4 on: July 29, 2010, 02:57:41 PM »
The heat needed is high enough to affect the anodize if done. I'm going to just do a clear acrylic.
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
"I fear the day that technology will surpass our human interaction. The world will have a generation of idiots" Albert Einstein

Carlriddle

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Re: PEX Gas Tank Lining
« Reply #5 on: July 29, 2010, 05:06:11 PM »
So no 2 stage powder coat?  I'm gonna be in LS wed to hang w/ Shane and the Gang.  Best damn beef roast ever.  Hopfully to see/ride before broke?? rofl

I am truely inspired by your build and others too, couple more kinks then I shall sell mine for another build. (ks) (ks)
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You can keep your CHANGE, I'd like to keep my DOLLAR.

fabr

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Re: PEX Gas Tank Lining
« Reply #6 on: July 29, 2010, 06:40:01 PM »
No,PC is out.
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
"I fear the day that technology will surpass our human interaction. The world will have a generation of idiots" Albert Einstein

fabr

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Re: PEX Gas Tank Lining
« Reply #7 on: August 07, 2010, 04:22:53 PM »
Ok here's my tank and here's a disected test tank. IMO this is a HUGE step in safety for us. I couldn't be happier.
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
"I fear the day that technology will surpass our human interaction. The world will have a generation of idiots" Albert Einstein

fabr

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Re: PEX Gas Tank Lining
« Reply #8 on: August 12, 2010, 07:37:34 PM »
Got my tank back today. After cutting out the filler hole and installing the bulkhead fittings I snapped a couple of tank interior pics for any of those interested. I think if a person makes the holding fixture I can get these done for 175 or so for one offs. If anyone has a need for more than one the cost per each goes down rapidly. if there's one thing I have NEVER wanted to experience it's getting broiled. For a couple C notes It's cheap insurance for sure. Many times safer than just a welded up tank. This stuff is TOUGH! Cross linked polyethylene.
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
"I fear the day that technology will surpass our human interaction. The world will have a generation of idiots" Albert Einstein

fabr

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Re: PEX Gas Tank Lining
« Reply #9 on: August 12, 2010, 07:40:21 PM »
As can be seen it covers the entire interior to a consistent thickness no matter the contours of the tank.
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
"I fear the day that technology will surpass our human interaction. The world will have a generation of idiots" Albert Einstein

BDKW1

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Re: PEX Gas Tank Lining
« Reply #10 on: April 25, 2014, 04:14:06 PM »
Bump from the dead......
 
What was the name of the company that lined it? Website?
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fabr

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Re: PEX Gas Tank Lining
« Reply #11 on: April 25, 2014, 05:30:24 PM »
I used www.charloma.com . They are in Cherryvale,Ks. There are many many rotomolders in the US. Any "can" do it. Question is whether they are willing to do it for you as a one off.
 I will be talking to them in the next week or so about doing the  tank for my dez car.  I have no idea if they are willing to still do it for me . I haven't been in contact for a while. I assume I can still get them to do it . Same guy in charge.
  There is one BIG detail that cannot be ignored. All welds must be free of porosity that "could" create a pinhole by blowing a bubble in the pex that does not flow out while heating during crosslinking. Bear in mind that pex cannot be heat welded and almost nothing will bond to it.  That means that a pinhole is almost unrepairable. There is a specialty 2 component adhesive that can be used to fill a small pinhole if it is accessible.  Not an issue as such if you design the can and cell for all fittings to be in the top of tank like a real fuel cell is with a fill plate containing all fittings and the filler neck. NO bottom or side fittings should be used. I strongly suggest if you consider this means of doing a  fuel cell(it's no different than the rigid plastic cells that are on the market by several big names) that you make the can where the pex liner can be removed if need be just as fuelsafe and others do. . I have not done that with the current tank but if there is any issue with the lining I can easily mod it to make it removable. Last time I was charged $200 to do this pex lining. A bargain for sure and a huge leap in safety without the expense of a certified custom fuel cell. I mean $500 compared to a couple grand. No sanctioning body will accept it but .......who cares? It's light years ahead of a welded aluminum only tank. That's all I care about.

 I'll ask if they are willing to do others as well as mine if you wish.
« Last Edit: April 25, 2014, 05:34:37 PM by fabr »
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
"I fear the day that technology will surpass our human interaction. The world will have a generation of idiots" Albert Einstein

Wyattboche

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Re: PEX Gas Tank Lining
« Reply #12 on: April 25, 2014, 07:13:05 PM »
How is this safer?
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BDKW1

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Re: PEX Gas Tank Lining
« Reply #13 on: April 26, 2014, 10:19:17 AM »
How is this safer?

 
When a metal tank gets hit, the seams crack. The rotomolded liner is flexable and take a lot more abuse before it fails. You can also develop cracks over time from general wear and tear. With the liner you chances of having a leak go way, way down.
 
Or if you take an axle through the side of the can you won't get a leak.
 
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fabr

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Re: PEX Gas Tank Lining
« Reply #14 on: April 26, 2014, 10:51:22 AM »
exactly.
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
"I fear the day that technology will surpass our human interaction. The world will have a generation of idiots" Albert Einstein
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