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TiGeo

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Reply with quote  #26 
I'll stick with my homebrew Stan's-like sealant.  No issues.  I don't mind the latex sealants that need refreshing/maintenance every few months.  Stan's uses propylene glycol as one of the parts of the liquid portion and this is for the anti-freeze properties.  My older homebrews that involved Slime, RV antifreeze (ethylene glyclol), and latex weeped like crazy from my old Specialized mtb tires (green droplets formed all over the outer casing).  My homebrew (and Stan's) doesn't do this - I am curious about the Finish Line product...is it more like original Slime in terms of not needing to be refreshed/long lasting?

To my knowledge, there is no "solvent" in Stan's.  Stan's is: liquid latex, ammonia, propylene glycol, water, and cornmeal.
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TiGeo

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Reply with quote  #27 
Quote:
Originally Posted by TiGeo
I'll stick with my homebrew Stan's-like sealant.  No issues.  I don't mind the latex sealants that need refreshing/maintenance every few months.  My older homebrews that involved Slime, RV antifreeze (ethylene glyclol), and latex and it weeped like crazy from my old Specialized mtb tires (green droplets formed all over the outer casing).  My homebrew (and Stan's) doesn't do this - I am curious about the Finish Line product...is it more like original Slime in terms of not needing to be refreshed/long lasting? My guess is "yes"; regular Slime never took-off as a viable tubeless tire sealant on bikes but was ok for filling inner tubes etc. to seal small punctures (and adding a ton of rotating weight).  Keep in mind, tubeless-ready tires are not butyl-lined to make them air-tight so they need some sort of "smeg" layer to keep the air in hence latex sealants.  This Finish Line stuff sounds better suited for UST applications (does anyone even use UST anymore?).

BTW - To my knowledge, there is no "solvent" in Stan's.  Stan's is: liquid latex, ammonia, propylene glycol, water, and cornmeal.
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xhx

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Reply with quote  #28 
I switched to Finish Line sealant as soon as the shop could get it in. So far maybe 500 miles, 4 races, 3 tire swaps.
1) I've noticed that immediately after beading up there will be a little leakage at the bead if I push on it, but this stops after a day (could be due to hookless rims?).
2) the sealant doesn't form a dry layer like latex sealants, but the consistency leaves a fairly thick coat of the sealant over all surfaces in the tire. In the event of a puncture the sealant is right there clogging the hole, just like latex sealants.
3) When swapping tires I can scrape down the inside of the tires & recover the same volume of sealant that I put in. Zero residue of any kind left in the tire so all the good stuff transfers to the new tire.
4) I got to test the sealant's efficacy IRL during a race- ran over a piece of barbed wire on a descent and watched a small white dot appear & with each tire revolution I'd see white thread-like shapes come off the hole, then flatten. That happened for a few minutes then stopped. No pressure loss in the tire and at the end of the race the hole was plugged.
5) I'm looking forward to trying this with WTB tires; I stopped using Nano's, one of my favorite tires, after I had 3 show casing separation using Orange Seal. Since there's no ammonia in this stuff I'm thinking it should be nicer to tires.

*Forgot to mention, so far I've used this with Vittoria Terreno Dry TNT casing, Panaracer Gravel Sling(🤢), & Kenda Flintridge Pro tires.
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