Page 52 - AMB Freelist

Stan's NoTubes Original
From: jetblackproducts.com RRP: $39.99 for 473mL
Time to seal a 3mm hole: 1:07 Pressure lost: 2.3psi
Time to seal a 6mm hole: 1:25 Pressure lost: 8.2psi
AMB’s notes: Stan’s were the innovator for readily available tubeless sealant, and their main sealant mix is still really reliable, although they have a faster acting Race sealant that is said to reinforce the area of the puncture. Only 90mL was needed for the 2.4” tyre, so that makes each setup about $8, although larger bottles are available and pricing does vary. The puncture sealing performance was pretty incredible, but I would suggest using a plug kit for bigger holes. The rate of air loss with the 6mm cut was a clear indicator to pull over and plug it, and the NoTubes DART plugs have been designed to have a chemical reaction with the sealant to make a strong repair. A lot of other thinner sealants like Stan’s, without added latex, had a similar rate of air loss, and the DART plug would be an ideal partner for a very fast and strong repair. Most of the sealant was gone given the rate of loss, but the sealant condition in the tyre was A1 with no signs of Stan’s monsters or separation. This is a reliable sealant, and it is easy to recommend.
Our take
I have avoided running tubes since 2005, and while I’ve had frustrations with tubeless sealant, tyres, rim tapes and valves... things have changed
a lot. If you think of the whole system, you are unlikely to be left frustrated by a tubeless tyre system. The key take away from this test is that sealants don’t last forever, and they are more effective sooner rather than later. Additionally, tubeless sealants have their limit, and realistically it’s with a hole upto 3mm or a little more. Carry a plug kit and keep it at hand. While it might seem fussy, putting a plug in
is far faster and easier than removing a wheel, a valve, and hoping your spare tube isn’t degraded.
Some of these sealants did perform better than others, but bear in mind this test was a one off, with limits based on the amount of equipment available. It would be easy to do your own tests on two sealants, one in each wheel, to see what serves you best in your conditions.
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