|   Has anyone tried liquid latex in a thin tube? | Sunny
Jan 17, 2002 10:53 PM | | Put the 50g of latex into a 100g light tube...kind of a light Slime, I guess. Would that work? It won't save any weight but would have punture resistance and the tire won't blow off the rim. Wonder how it would handle pinch flats... |
| Tufo sells it | Jan_Gerrit
Jan 17, 2002 11:20 PM | | Meant for the tubular tires, that have a buytl innertube inside. Tufo sealent has a very long life, will not dry up as easy as diluted moldbuilder. It will not seal punctures of over 2mm.
I ones had a Tufo that wouldn't seal with Tufo Sealent, the hole seemed to be too large. So at first I let the sealent settle and then inflate further. That puncture opened on the next race...
BUt since it was an expensive tub, I went on experimenting. I made a 1:1 water:latex solution, quite thick. Put that in the tub, and...SUCCESS! It's wouldn't even run through the puncture, instant seal. I rode that tire in the dutch National on my spare bike a week later, a total of 5 laps at very low pressure, which is hard on punctures.
I've also put it in MTB tires preventively, got a flat on my Twister Supersonic, thought it didn't work. But at home, I couldn't find the puncture!! So it sealed the puncture, just not instantly. I should have had a CO2 with the, could have brought me to a good finish in that race... 50g is too much though, Tufo Advises 15g in a road tub, 30 should be more than enough for mtb, since it will only seal small holes.
You should try Stan's new mixture, which he says, seals bigger holes better. For big races that I will not chose tubeless, I will probably put some kind of latex mixture in the tubes, and carry an inflation device. Points in racing are worth some extra efford. |
| The other thought that I had... | Sunny
Jan 18, 2002 8:49 AM | | was taking a 24" tube or even a 20" tube and cut the outer half off to make a 'rim strip'. The 'lips' of the rimstrip would extend past the edges of the rim and the tire bead would fit between the rim and this extended flap. All I need is to get some latex to try... |
| Why not a 26" tube? | DJS
Jan 18, 2002 10:40 AM | | seems like a good starting point for a system. Take a 26" tube, cut off the top half, then fit the tire over the flaps, then into the bead. Might be a tough job. Actually, now that I think about it, I dont think it would work. The flap would not be held firmly against the inside tire sidewall, except where it hits the rim.
Probably better to just cut a tube and glue it to the rim or just leave it go without glue, letting the air pressure hold it firm. |
| The smaller tube would... | Sunny
Jan 18, 2002 11:09 AM | | hold itself to the rim like a rubber band. May not work, it was just a random thought more or less, after hearing about the new rim strip from Stan. I bet it is similar though. |
| I did something simular | Jan_Gerrit
Jan 19, 2002 2:05 AM | | Because I always seem to blow the air under the bead at the valve, I do this, wih mixed results:
Cut out a 10cm thin and foldable piece of plastic (Dura-Ace cassette box lit for me). About 4-6cm wide, rounde edges. The valve goes through the center, and use a extra circel of innertube material (1.5cm max) as an o-ring. Force the stem through small holes in both the plastic and butyl parts, put together with undiluted latex.
Although on my 20mm narrow Open Pro rim there wasn't much room for the tire to find the clincher edge (somehow it would inflate also), on a 22+mm mtb rim it might work better. The strong plastic will really push the tire agains the rim. Once I find the right material I'll do it for all of the rim.
I've also been thinking about a rimstrip that IS actually a tube, but only very narrow and pointy upwards. Perhaps with a seperate valve that lets air through to the tire. Very complicated, rather buy Stan's :-) |
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