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  1. #1
    Senior Member waynesulak's Avatar
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    Tire sealant anyone??

    This winter I added tire sealant designed for tubeless tires in my tubes. Riding after work in the cold and sometimes finishing in the dark it was nice to have some insurance against flats but I wondered how much the sticky stuff sloshing around in my tubes changed the ride. I did find that I only had to add air once a week. I suppose the sealant filled a lot of the pores in the tube. I used Orange Seal and plan to set up a winter set of tires with it next year.

    I recently replaced the tubes with untreated ones and subjectively felt like the ride was better. Similar to chaining to a more supple tire. Maybe this was just the placebo effect.

    Now I am surprised to read the at the Blanco uses tubeless sealant in its racing tires at the Giro. Below is a quote from Velonews:

    http://velonews.competitor.com/2013/...he-giro_287867


    332-659x440.jpg

    Inside the truck: A rest day with Blanco mechanics

    Every tire gets a dose of Vittoria Pit Stop tire sealant. "With the latex tubes in these tires, the Pit Stop helps keep them from loosing a lot of air in one day, which they would normally do," Hoetelmans explained. "Plus, sometimes when the hole is small, it fixes the flat. Or it will fix the flat before the tire goes all the way down, so the rider can ride on it better until the car arrives." Photo: Caley Fretz | VeloNews.com

    Opinions?

    The race team knows what they are doing and sealant seems like a good idea?

    The Race team is making a choice to avoid flats at the cost of speed, count me out?
    Last edited by waynesulak; 05-23-13 at 12:02 PM.

  2. #2
    Senior Member himespau's Avatar
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    No idea, but I'm interested and hope someone with knowledge can chime in.
    Punctuation is important. It's the difference between "I helped my uncle, Jack, off a horse" and "I helped my uncle Jack off a horse"


  3. #3
    pan y agua merlinextraligh's Avatar
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    I've raced on Vittoria EVO tubulars with stan's sealant in them.

    We're talking less than 2 ounces here.


    I can't feel any difference between riding with and without the sealant, and it does fix/stop small leaks.
    You could fall off a cliff and die.
    You could get lost and die.
    You could hit a tree and die.
    OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.

  4. #4
    Senior Member waynesulak's Avatar
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    Quote Originally Posted by merlinextraligh View Post
    I've raced on Vittoria EVO tubulars with stan's sealant in them.

    We're talking less than 2 ounces here.


    I can't feel any difference between riding with and without the sealant, and it does fix/stop small leaks.
    Do you plan to use it routinely in clinchers?

  5. #5
    pan y agua merlinextraligh's Avatar
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    Quote Originally Posted by waynesulak View Post
    Do you plan to use it routinely in clinchers?
    No, but mostly because of cost/bother/lethargy, than a worry about rolling resistance or weight.

    With a tubular, it'sa bigger deal to fix a flat, hence worth the ounce of prevention.
    You could fall off a cliff and die.
    You could get lost and die.
    You could hit a tree and die.
    OR YOU COULD STAY HOME AND FALL OFF THE COUCH AND DIE.

  6. #6
    Senior Member
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    Also riding with Stans in my tubulars on the singles and allows me to enjoy riding tubulars again. I am certainly considering it on the tandem just for convenience on multi day rides.

  7. #7
    Senior Member Team Fab's Avatar
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    Off road UST tires have a built in membrane that seals the small holes. I ran the maxxis tires for xc racing for years without a flat. That included run ins with a cactus. The downside was they were heavier than a regular tire with stans, but lighter than a tire/tube combo. The upside no stans to deal with. So my question is are road tubless the same? Or do you have to run sealant.

  8. #8
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    I've been running stan's sealant for 6 or 8 years in tubes/clinchers on our tandem. Northern Utah is goathead country. I can only remember a couple of times we've been stopped, and that was to top off pressure after it sealed. Seems like we are getting ~3 years on tubes, after which I change them just to avoid a tear at the valve stem from old rubber. We run standard thickness tubes but not thornproof which have their own problems. We've tried thin/light tubes but I think stans had a hard time sealing them. I self install the sealant into the tubes. I also run stans in my short bike with similar results. Commuting daily plus club rides, many times seen evidence of stans having squirted out but only stopped a couple of times to top off pressure, haven't changed a tube in a long time. (Tandem and single both running rolf vigors.)

    Having had a minor tandem spill last year from using the wrong front tire, I'll go the extra mile (many of them) to avoid a flat on the tandem since it could be very, very costly. I went to 28mm continental ultra gatorbacks. I love them and don't feel like we lost any speed, and even if we did it would be worth it to me. Smoother ride is nice too.

  9. #9
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    Anyone useing the "Slime tubes" that are pretreated with the slime sealant?? They have a Lite tube with slime that they say the weight is 117 grams for 700 X 19-25.

  10. #10
    Senior Member waynesulak's Avatar
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    One concern about sealant filled tubes is that in the case of a blowout the sealant provides lubrication between the tire and rim and also the road. Some think there is a higher probability the the tire will come off the rim.

    I mention this so that anyone considering using sealant in tubes will be aware of the potential risks involved. This should not be an issue with tubular tires glued to the rims. We will most likely continue using it in winter but most likely not in warm weather.

  11. #11
    Senior Member Stray8's Avatar
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    Quote Originally Posted by Tookool View Post
    Anyone useing the "Slime tubes" that are pretreated with the slime sealant?? They have a Lite tube with slime that they say the weight is 117 grams for 700 X 19-25.

    I bought and installed Slime filled tubes on smaller, fatter kid's bike tires and that noticeably reduced the puncture frequency. The incremental weight was insignificant to their riding style.

  12. #12
    Senior Member zonatandem's Avatar
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    Tried sealant once a couple decades ago. A real mess of goo if you do get a flat.
    Instead we ride Maxxis Re-Fuse tires (700x25) on our tandem with standard tubes.
    Have gone as much as 5,000+ miles in one year without a puncture, but did flatten a couple times due to patch failure on tubes.
    We ride primarily in southern Arizona but have spent several 3-month sojourns in northern Utah.
    The Re-Fuse tire has an aramid (Kevlar) layer plus a Kevlar bead (folding) and runs 120 PSI; are super easy to install/remove, evenwithout tire levers.
    Also have used the Panaracer Pasela Tour Guards (700x25) with same results, but they are a bit more difficult to install/remove. They give a bit harsher ride, according to the stoker; so instead of the recommended 120 PSI we run only 110 PSI.
    Just our input/experience.
    Pedal on TWOgether!
    Rudy and Kay/zonatandem

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