Continued fettling of new tyres. Last weekend I decided to swap the Schwalbe 1 tubeless tyres on my utility\commuter for some Sector 28’s, and try out the new Finish Line non-latex sealant. At the same time I decided to fit the dynohub front wheel. So I had a rear Pacenti SL25 “tubeless ready” rim that had been used, and an unused front H+ Son, which although not officially tubeless ready is a rim I’ve used for the last 2 years tubeless on another bike.
Now, being short of time I neither fitte£ the tyres with tubes to “condition” them, nor did I lubricate the rims with soap solution. This may or may not have a bearing on what followed.
I mounted the tyres no problem by hand. Front went up with the floor pump ok, the rear I needed to use a CO2 canister to pop on the rim. Deflated them, added sealant and reinflated. And watched as copious amounts of sealant foamed out around the bead. Did my usual spinning and shaking and bouncing, and thought they were holding pressure ok. 24 hours later they were dead flat. Pumped them up again, spun etc. 24 hours later flat as a pancake. Puddle of sealant by front tyre
![Angry >:(](/forum/Smileys/classic/angry.gif)
This continued all week, albeit with a slight improvement - they only went down to 3-4 bar in a day. Saturday I pumped them up and went for a 30 mile ride, hoping the agitation would aid sealing. It did, sort of, as overnight they wen5 down from 7 to 5 bar. So improving, but nowhere near as good as the latex sealant had been. Not impressed so far.