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Thread: Tires and tubes and tires and sealant and tires and foam and

  1. #1
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    Default Tires and tubes and tires and sealant and tires and foam and

    Saw this the other day. You have to use sealant with this system (understand there are versions for mountain bikes that have been in use for a while.) Presumably the foam is porous because it compresses and expands with changes in air pressure - why doesn't the foam insert fill up with sealant?

    https://cyclingtips.com/2021/04/vitt...or-road-bikes/

    And then Kasper Asgreen wins Flanders on Specialized Turbo Cotton Hell of the North clinches and latex tubes. This I understand. The world as we know it is not ending. Yet. QuickStep to the rescue.

    https://cyclingtips.com/2021/04/the-...bed-clinchers/
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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    Quote Originally Posted by j44ke View Post
    why doesn't the foam insert fill up with sealant?
    I believe it is closed cell foam so the sealant isn't absorbed. Interesting concept that lets you limp home in case the sealant doesn't stop the leak. But you need a tool to remove the tire so no putting in a tube on the road in an emergency.

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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    Quote Originally Posted by NotFadeAway View Post
    I believe it is closed cell foam so the sealant isn't absorbed. Interesting concept that lets you limp home in case the sealant doesn't stop the leak. But you need a tool to remove the tire so no putting in a tube on the road in an emergency.
    Pretty amazing stuff. Incredibly compressible. See here:

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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    i don't think the mtb variety allows one to limp home on a flat...but is supposed to improve ride/quality and cornering

    these seem to only expand in the case of a flat thereby allowing you to **slowly** get home or to the shop...seems like a tire plug is a much better option

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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    I think the limp home thing is a last resort in case plugging fails or the damage is too large for plugs. I'll be interested to see some real world reports once people start riding these.

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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    The mtb version protects against destroying a carbon rim. In hindsight that is likely what I did with 2 rims.

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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    Well, here is Simon Richardson on GCN doing a presentation on the tech. I think there is a note somewhere that says the video is "in association with Vittoria" so not to be confused with a review.

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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    Seems like cool tech if it does work. I don't think it should be confused with a Cush Core type tire insert though, they are pretty different. Old fashioned tire inserts are for protection against pinch flats and rim destruction. This new Vittoria stuff is a magic expanding insert that activates when the tire goes flat.

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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    Quote Originally Posted by rec head View Post
    This new Vittoria stuff is a magic expanding insert that activates when the tire goes flat.
    it's like airbags for your rims when the tire goes flat!

    pretty cool idea, for a minor weight penalty, it gives way more practical protection than sealant for higher pressure 25mm tires,
    and for those mid-width tires where sealant still isn't perfect for larger potential cuts from sidewall slices.

    -g
    EPOst hoc ergo propter hoc

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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    Anyone try these before?

    https://tannusamerica.com/pages/tannus-armour

    Adds some weight but then again if it works as well as they claim, no sealant to worry about and depending on the ride, maybe no need to carry any tube, pump, levers or CO2...?

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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    Quote Originally Posted by suhacycles View Post
    Anyone try these before?

    https://tannusamerica.com/pages/tannus-armour

    Adds some weight but then again if it works as well as they claim, no sealant to worry about and depending on the ride, maybe no need to carry any tube, pump, levers or CO2...?
    I'm using the Tannus Tubeless version on an XC MTB with tubeless sealant. Haven't tried the version with a tube in it, no reason to bother I can see. Sealant is no big deal to me.

    Much easier to install than CushCore, and it's working really well so far. Maxxis Rekon 2.25 at 20 psi in the rear is giving great traction, lots of extra sidewall stiffness, and I've been slamming it on a lot of rocks & roots with nothing bad happening yet.

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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    Quote Originally Posted by jesseth View Post
    I'm using the Tannus Tubeless version on an XC MTB with tubeless sealant. Haven't tried the version with a tube in it, no reason to bother I can see. Sealant is no big deal to me.

    Much easier to install than CushCore, and it's working really well so far. Maxxis Rekon 2.25 at 20 psi in the rear is giving great traction, lots of extra sidewall stiffness, and I've been slamming it on a lot of rocks & roots with nothing bad happening yet.
    From a customer service person at Tannus I was told a CX/gravel version is coming to market, probably in June... looks like it's worth a try....

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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    Quote Originally Posted by jesseth View Post
    I'm using the Tannus Tubeless version on an XC MTB with tubeless sealant. Haven't tried the version with a tube in it, no reason to bother I can see. Sealant is no big deal to me.

    Much easier to install than CushCore, and it's working really well so far. Maxxis Rekon 2.25 at 20 psi in the rear is giving great traction, lots of extra sidewall stiffness, and I've been slamming it on a lot of rocks & roots with nothing bad happening yet.
    How does this one help with sidewall support?

    Im about to shell out for Cushcore XC for my MTB, and CX, for cyclocross. And most of what im looking for is better burp/squirm prevention. Maybe I'll try these tannus on the MTB first?
    --------------------
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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    This is probably a good place to post these. Anyone ever have their sealant solidify and release from the casing? This was on a front wheel and threw it out of balance pretty good. I think i've isolated the problem to the fact that this bike sat for 9 months untouched and the sealant must have pooled and hardened and eventually broke free. yuk. rotate your tires folks, lol.




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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    What brand of sealant made the mess?

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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    We have all probably had it dry up but I have never seen it clump like that. It looks like it was easier to remove than the dried up gunk that sticks to the tire.

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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    that looks like the Stan's booger collection to end all Stan's booger collections.

    usually it's a single clump

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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    image-3736784127.jpg

    A bigger booger. Stan's and Slime mix. If it had always stayed at the bottom of the tire for pinch flat protection -- SchnoogCore?
    Trod Harland, Physical Educator

    Not everything that is faced can be changed, but nothing can be changed until it is faced. James Baldwin

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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    Just ride your bikes chic@s and stop putting half a bottle on each tire, you don't need that much!
    --
    T h o m a s

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    Default Re: Tires and tubes and tires and sealant and tires and foam and

    Quote Originally Posted by AngryScientist View Post
    This is probably a good place to post these. Anyone ever have their sealant solidify and release from the casing? This was on a front wheel and threw it out of balance pretty good. I think i've isolated the problem to the fact that this bike sat for 9 months untouched and the sealant must have pooled and hardened and eventually broke free. yuk. rotate your tires folks, lol.
    Damn. Matching your sealant boogers and tire levers is a pretty PRO move.

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