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  1. #1
    coffeeeeee p4nh4ndle's Avatar
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    what if i...

    [i am channeling phantomcow, i am channeling phantomcow...]
    ok, i'm putting myself out there for some ridicule but
    does anyone have an idea about the permeability of an epoxy resin to air?

    my current tinkering pet project is:
    coat the surface and edges of the rim tape on my mtb wheels with a thin coat of epoxy to make the rim air tight, install a ust-ish presta valve with removable core, go tubeless on the cheap (and possibly lighter than stans???).

    anyone want to tell me why this won't work?

  2. #2
    Hey guyz? Guyz? Wait up!! Siu Blue Wind's Avatar
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    NERD ALERT!!

    I'm outta here.
    Quote Originally Posted by Buddha
    We are what we think. All that we are arises with our thoughts. With our thoughts, we make the world.
    Quote Originally Posted by making View Post
    Please dont outsmart the censor. That is a very expensive censor and every time one of you guys outsmart it it makes someone at the home office feel bad. We dont wanna do that. So dont cleverly disguise bad words.

  3. #3
    Pwnerer Wordbiker's Avatar
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    Quote Originally Posted by p4nh4ndle View Post
    anyone want to tell me why this won't work?
    Because many epoxies dry too hard and are brittle. It'll leak soon after being slammed against a road surface.

    Also, you'll be screwed if you have to replace a nipple.
    Quote Originally Posted by ahsposo View Post
    Ski, bike and wish I was gay.

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    Hey guyz? Guyz? Wait up!! Siu Blue Wind's Avatar
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    Oh man I didn't even read the post. I saw "Phantomcow" and high tailed it outta here.

    Plus I really don't have a comment on it anyway other than what Wordbiker took out of my mouth. (He can read my mind).
    Quote Originally Posted by Buddha
    We are what we think. All that we are arises with our thoughts. With our thoughts, we make the world.
    Quote Originally Posted by making View Post
    Please dont outsmart the censor. That is a very expensive censor and every time one of you guys outsmart it it makes someone at the home office feel bad. We dont wanna do that. So dont cleverly disguise bad words.

  5. #5
    Pwnerer Wordbiker's Avatar
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    Quote Originally Posted by Siu Blue Wind View Post
    Oh man I didn't even read the post. I saw "Phantomcow" and high tailed it outta here.

    Plus I really don't have a comment on it anyway other than what Wordbiker took out of my mouth. (He can read my mind).
    Oh my! *reading Siu's mind*
    Quote Originally Posted by ahsposo View Post
    Ski, bike and wish I was gay.

  6. #6
    surly old man jgedwa's Avatar
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    How about laying a bead of silicon glue all the way around the rim under the rim strip?
    Cross Check Nexus7, IRO Mark V, Trek 620 Nexus7, Karate Monkey half fat, IRO Model 19 fixed, Amp Research B3, Surly 1x1 half fat fixed, and more...
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    Hey guyz? Guyz? Wait up!! Siu Blue Wind's Avatar
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    Yeah, like the kind you use for fishtanks. Flexible, waterproof and you can get it off if you need to.
    Quote Originally Posted by Buddha
    We are what we think. All that we are arises with our thoughts. With our thoughts, we make the world.
    Quote Originally Posted by making View Post
    Please dont outsmart the censor. That is a very expensive censor and every time one of you guys outsmart it it makes someone at the home office feel bad. We dont wanna do that. So dont cleverly disguise bad words.

  8. #8
    Pwnerer Wordbiker's Avatar
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    Why do you hate tubes?
    Quote Originally Posted by ahsposo View Post
    Ski, bike and wish I was gay.

  9. #9
    Banned. timmyquest's Avatar
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    Let us know how it works...

  10. #10
    Senior Member VT tallbike's Avatar
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    Search in the MTB thread and you'll find plenty of info on DIY tubless conversions. Might want to check that out before you just decide to throw caution to the wind.

  11. #11
    coffeeeeee p4nh4ndle's Avatar
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    ok, not to resurrect this (it's not really the appropriate place for it)
    but i just did my proof of concept run. 7min epoxy for plastics (cures a little more pliable at the expense of tensile strength; won't shrink or expand according to packaging) on top of a single layer of woven nylon rim tape, covering the edges as well as possible.
    i got an old conti explorer pro tire to hold air, without sealant, for about twenty seconds until it all emptied out of the puncture which caused me to retire that t(y)re in the first place. and some spoke holes leaked; i've obviously got to do a little hunt and peck with the resin.

    (the fact that i'm doing this on a friday night before a race proves i need more of a social life)

  12. #12
    Senior Member ryder47's Avatar
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    Take a look at Devcon products below. There's a variety of flexible urethane products.


    http://www.devcon.com/products/produ...ndid=1&catid=3

  13. #13
    You Know!? For Kids! jsharr's Avatar
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    Just a thought, but the resins seem to be watertight, as boats are built of cloth and resin, to it may work. Only one way to find out.
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    Quote Originally Posted by colorider View Post
    Phobias are for irrational fears. Fear of junk ripping badgers is perfectly rational. Those things are nasty.

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