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Main
Date: 31 Jul 2007 07:01:39
From: Josh Hassol
Subject: New rust preventative method?
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I know, I know, rust isn't really a big problem with steel frames.
Nevertheless, it would be nice to find a way to prevent, or at least
significantly reduce, corrosion inside frame tubes. FWIR, sprays like
Framesaver and Boeshield work pretty well, but it is challenging to
coat all the interior surfaces of a frame.
I just read about a technology I'd never seen before, and I'm
wondering if anybody knows about it. It is called "Vapor Corrosion
Inhibitor" (VpCI) and it works, ostensibly, by releasing vapors, the
molecules in which attach themselves to bare metal and form a
protective layer. At least one company is selling this stuff in small
strips, which could fit inside the tubes of a frame. Might this be a
more effective way of protecting a frame than trying to coat it with a
liquid? In theory, anyway, the VpCI vapors would migrate into all the
tubes.
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Date: 01 Aug 2007 10:04:30
From: Nate Knutson
Subject: Re: New rust preventative method?
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On Aug 1, 9:35 am, "Bruce Gilbert" <bgilb...@hal-pc.org > wrote:
> "Nate Knutson" <biken...@riseup.net> wrote in message
>
> news:1185945656.557414.325210@d30g2000prg.googlegroups.com...
>
>
>
> > On Jul 31, 7:01 am, Josh Hassol <jhas...@rcn.com> wrote:
> > > I know, I know, rust isn't really a big problem with steel frames.
> > > Nevertheless, it would be nice to find a way to prevent, or at least
> > > significantly reduce, corrosion inside frame tubes. FWIR, sprays like
> > > Framesaver and Boeshield work pretty well, but it is challenging to
> > > coat all the interior surfaces of a frame.
>
> > Meh... really? You plug it up except for the holes you'll be using to
> > squirt it and vent it. Then you squirt in the amount recommended by
> > the instructions, and you rotate the frame around in the air for a
> > while. Then to be thorough you do it again after however many hours.
> > Look down a seattube with a flashlight on a frame that's been treated
> > with this approach. I've only ever seen a pretty nice dispersion of
> > the nasty toxic sludge in question, all set to be carried around with
> > ya forever.
>
> > PS: Hopefully you'll also see a drain hole in the BB, which every
> > single steel frame ever should have.
>
> > > I just read about a technology I'd never seen before, and I'm
> > > wondering if anybody knows about it. It is called "Vapor Corrosion
> > > Inhibitor" (VpCI) and it works, ostensibly, by releasing vapors, the
> > > molecules in which attach themselves to bare metal and form a
> > > protective layer. At least one company is selling this stuff in small
> > > strips, which could fit inside the tubes of a frame. Might this be a
> > > more effective way of protecting a frame than trying to coat it with a
> > > liquid? In theory, anyway, the VpCI vapors would migrate into all the
> > > tubes.
>
> There is a brush applied coating that is used on the offshore oil rigs that
> we are investigating for use on a new line of steel bikes we are considering
> bringing in. I think it is made by Ameron or Rust-O-Leum. Last week an
> industrial paint salesman told me that Exxon may have a similar product in
> their industrial chemical line.
>
> Last year we met with one of the Taiwan frame builders at Interbike. They
> gave us a selection of steel tubes to take back. I coated the tubes with
> different compounds. The untreated tubes have surface rust on them. They
> were just sitting in our warehouse, never outside. Tubes with a phosphoric
> acid component coating did just fine, but it may not be tough enough to
> stand up to years of rain and weather changes. That is the reason we are
> looking into the marine coatings industry for product candidates.
>
> Bruce
Thing is, steel bikes with typical wall thicknesses have generally
been getting along fine without it forever. Really, they have. Regular
use in marine environments or salted roads, or walls below .5, sure,
the story is different. But it's just not an issue for most bikes. So
why pump out more toxic shit and give the producers of said shit more
money? And since internal rust is generally only ever an issue on
bikes seeing long-term use, whatever treatment you use is going to
have to last quite a while in fairly severe conditions to be all that
relevant.
And if you care about internal rust, it would be completely absurd to
have internal rust protection before shelling out for a drain hole on
the BB.
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Date: 31 Jul 2007 22:20:56
From: Nate Knutson
Subject: Re: New rust preventative method?
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On Jul 31, 7:01 am, Josh Hassol <jhas...@rcn.com > wrote:
> I know, I know, rust isn't really a big problem with steel frames.
> Nevertheless, it would be nice to find a way to prevent, or at least
> significantly reduce, corrosion inside frame tubes. FWIR, sprays like
> Framesaver and Boeshield work pretty well, but it is challenging to
> coat all the interior surfaces of a frame.
Meh... really? You plug it up except for the holes you'll be using to
squirt it and vent it. Then you squirt in the amount recommended by
the instructions, and you rotate the frame around in the air for a
while. Then to be thorough you do it again after however many hours.
Look down a seattube with a flashlight on a frame that's been treated
with this approach. I've only ever seen a pretty nice dispersion of
the nasty toxic sludge in question, all set to be carried around with
ya forever.
PS: Hopefully you'll also see a drain hole in the BB, which every
single steel frame ever should have.
> I just read about a technology I'd never seen before, and I'm
> wondering if anybody knows about it. It is called "Vapor Corrosion
> Inhibitor" (VpCI) and it works, ostensibly, by releasing vapors, the
> molecules in which attach themselves to bare metal and form a
> protective layer. At least one company is selling this stuff in small
> strips, which could fit inside the tubes of a frame. Might this be a
> more effective way of protecting a frame than trying to coat it with a
> liquid? In theory, anyway, the VpCI vapors would migrate into all the
> tubes.
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Date: 01 Aug 2007 11:35:05
From: Bruce Gilbert
Subject: Re: New rust preventative method?
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"Nate Knutson" <bikenate@riseup.net > wrote in message
news:1185945656.557414.325210@d30g2000prg.googlegroups.com...
> On Jul 31, 7:01 am, Josh Hassol <jhas...@rcn.com> wrote:
> > I know, I know, rust isn't really a big problem with steel frames.
> > Nevertheless, it would be nice to find a way to prevent, or at least
> > significantly reduce, corrosion inside frame tubes. FWIR, sprays like
> > Framesaver and Boeshield work pretty well, but it is challenging to
> > coat all the interior surfaces of a frame.
>
> Meh... really? You plug it up except for the holes you'll be using to
> squirt it and vent it. Then you squirt in the amount recommended by
> the instructions, and you rotate the frame around in the air for a
> while. Then to be thorough you do it again after however many hours.
> Look down a seattube with a flashlight on a frame that's been treated
> with this approach. I've only ever seen a pretty nice dispersion of
> the nasty toxic sludge in question, all set to be carried around with
> ya forever.
>
> PS: Hopefully you'll also see a drain hole in the BB, which every
> single steel frame ever should have.
>
> > I just read about a technology I'd never seen before, and I'm
> > wondering if anybody knows about it. It is called "Vapor Corrosion
> > Inhibitor" (VpCI) and it works, ostensibly, by releasing vapors, the
> > molecules in which attach themselves to bare metal and form a
> > protective layer. At least one company is selling this stuff in small
> > strips, which could fit inside the tubes of a frame. Might this be a
> > more effective way of protecting a frame than trying to coat it with a
> > liquid? In theory, anyway, the VpCI vapors would migrate into all the
> > tubes.
>
>
There is a brush applied coating that is used on the offshore oil rigs that
we are investigating for use on a new line of steel bikes we are considering
bringing in. I think it is made by Ameron or Rust-O-Leum. Last week an
industrial paint salesman told me that Exxon may have a similar product in
their industrial chemical line.
Last year we met with one of the Taiwan frame builders at Interbike. They
gave us a selection of steel tubes to take back. I coated the tubes with
different compounds. The untreated tubes have surface rust on them. They
were just sitting in our warehouse, never outside. Tubes with a phosphoric
acid component coating did just fine, but it may not be tough enough to
stand up to years of rain and weather changes. That is the reason we are
looking into the marine coatings industry for product candidates.
Bruce
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Date: 31 Jul 2007 18:22:17
From: Ozark Bicycle
Subject: Re: New rust preventative method?
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On Jul 31, 9:01 am, Josh Hassol <jhas...@rcn.com > wrote:
> I know, I know, rust isn't really a big problem with steel frames.
> Nevertheless, it would be nice to find a way to prevent, or at least
> significantly reduce, corrosion inside frame tubes. FWIR, sprays like
> Framesaver and Boeshield work pretty well, but it is challenging to
> coat all the interior surfaces of a frame.
>
> I just read about a technology I'd never seen before, and I'm
> wondering if anybody knows about it. It is called "Vapor Corrosion
> Inhibitor" (VpCI) and it works, ostensibly, by releasing vapors, the
> molecules in which attach themselves to bare metal and form a
> protective layer. At least one company is selling this stuff in small
> strips, which could fit inside the tubes of a frame. Might this be a
> more effective way of protecting a frame than trying to coat it with a
> liquid? In theory, anyway, the VpCI vapors would migrate into all the
> tubes.
My father was a tool maker prior to retirement. He kept blocks of
camphor in his tool boxes to prevent rust. Apparently, it is still a
common practice:
http://preview.tinyurl.com/3b7zcj
http://tinyurl.com/3b7zcj
Small crystals in a cloth sack, etc., might work.....
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