Tubeless tyres - how much sealant do you put in?

Naveed
Naveed Posts: 728
edited July 2009 in MTB general
How much sealant is enough?

Comments

  • RealMan
    RealMan Posts: 2,166
    About 2 ounces for a 2.2 tyre.
  • Naveed
    Naveed Posts: 728
    That's what I used (roughly) but it's hard to know when enough sealant is enough, 'cos the only way you'll really find out is when you puncture I guess.

    The whole tubeless thing is going to take some getting used to.

    Cheers :D
  • RealMan
    RealMan Posts: 2,166
    Nah it should still seal even if you only put one ounce in there, just not as quickly. 2 ounces is just the recommended amount. If youre doing some serious XC racing, you might want to cut it down to just one ounce or something.


    Your first ride with tubeless will be really really dissapointing. I kept on expecting the tyres to burst into song everytime they punctured - "YOU GOT A PUNCTURE BUT THE SEALANT SEALED IT BEFORE ANY AIR WAS LOST". Unfortunately they dont. They just seal the hole and keep going. Really annoying.

    Wish there was some way of knowing youd had a puncture and it had been sealed.
  • Naveed
    Naveed Posts: 728
    When running tubeless tyres you need to inflate them with a track pump or compressed air. This ain't good if you experience air loss on the trails.
  • RealMan
    RealMan Posts: 2,166
    Naveed wrote:
    When running tubeless tyres you need to inflate them with a track pump or compressed air. This ain't good if you experience air loss on the trails.

    Well thats why you put sealant in, so you dont experience air loss.

    And say you do lose 10 psi, and you end up at 20psi or whatever, you can still inflate them back up to 30psi with a mini pump easily.


    Only time when you really lose all the air is when you get a sidewall rip. And then youre pretty much in the same situation as if youd been running tubes.

    Or unless youre a fattie and you corner hard and land badly.
  • mikeage
    mikeage Posts: 150
    The thing with the compressor/track pump is to seat the beads, you can let the air out of the tyre without it becoming unseated. like with tubes, when you get a flatty you go round the trye loosening the bead to make it easier to remover the tyre.

    Generally you would notice a drop in pressure before riding far enough on a flatty to roll the bead completely off, and if the bead is unseated in one place you can maipulate the tyre with ya hands enough to build enough presure to re-seat that spot. I'd put enough pressure with my hand to push down from the top of the tyre tread into/over the rim at the spot that was unseated until I'd built up enough pressure for it to pop into place.

    Little CO2 cartridge inflators are good for out on the trail as well, use as the emergency tool when you break the seat, normal mini pump to just add a few psi here and there.
  • Anonymous
    Anonymous Posts: 79,667
    Naveed wrote:
    When running tubeless tyres you need to inflate them with a track pump or compressed air. This ain't good if you experience air loss on the trails.
    if you do get a catastrophic loss of air, which completely deflates your tyres, then you can just stick a tube in as normal, and carry on.

    Mind you, even when I used (against all advice) a non tubeless tyre with a stan's kit, and lost all pressure, the tyre bead re-located itself, meaning I was able to re-inflate it with a standard minipump.

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