The slowtwitch test is excellent (http://www.slowtwitch.com/Products/Thin ... _4155.html or Google 'slowtwitch sealant test').
I took away this:
Ammonia free is better
They all work better on latex tubes
They all work pretty good on the kind of punctures I get (small)
I didn't go with Bontrager TLR or Orange Seal as the useful lifetime seemed short. Bontrager SealSafe wasn't tested so I didn't go with that either.
Flat Attack is meant to be good though; Caffelatex was available at my LBS hence I went with that.
Twice now I've repaired a puncture + cut them simply by putting some Stan's NoTubes sealant now and then pumping back up. Once with just a hand pump to around 60PSI, and once with a CO2 canister to get around 100 PSI. Both times I was able to make it to a bike shop to pump back up to 130PSI and ride the rest of the way home. I'm still using the same tubulars. Stan's has saved me from having to replace the tubulars, whereas a inner tube would have to been replaced when I got home.
I had terrible with Caffelatex, and it wouldn't hold over 80 psi, in a Schwalbe tub. It also failed my own personal test, with the above mentioned screw. It wouldn't hold any air, in this case! This tire is a Veloflex Arenberg.
I am still riding on my Orange Seal filled tubs, and am patiently waiting for my first puncture. Hopefully it won't be another big screw, and be something that the sealant actually stands a chance of sealing!!
It went flat while I was pumping my tires up. When I changed the inner tube, I saw there is a big hole just next to the valve.
Where black material is meeting with the latex tube.
Do you guys have any recommendation? Can I patch it there, or the tube is dead?
Usually fails there if you've been waggling the stem, you are using a track pump aren't you?
Could also be caused by the tube being stretched as the tyre moves round the rim, you did use shit loss of talc didn't you? (Stops the tube sticking to the tyre)
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