I just saw this and am fairly impressed. MilKit has taken a hard look at the tubeless mountain bike tire and how to best manage adding sealant. They say the system is available in the US through Amazon.
Sweet merciful crap. $55.
I've actually tried almost exactly this with an $8 baster syringe very similar to
this one.
I've found an old spoke to be excellent for checking sealant level, pull the valve core and use the threaded end as a dipstick. Barely have to do that, as I can get a pretty good idea of how much sealant is left by just shaking the tire.
"The Milkit valves keep the air inside, even without the valve core..." Uh. Okay. So how do you bleed down tire pressure? Or, for that matter, how would you even _measure_ tire pressure?
"...which makes fast inflation easier." No, it introduces some sort of flow restriction. I've had tires which wouldn't seat when the valve was installed but seated fine when I shot air in without the valve body in the way. I've got a blow gun I modified with a hose to a silca pump head which I use for seating tires because it delivers more air faster than a conventional inflator.
Cool that it uses the trapped air pressure to push out the sealant, I'll give it that, but I was able to accomplish the same by drawing up the basting syringe. Plus, such a skinny tube could clog very easily.
They show the guy refilling the syringe by drawing off the top of a filled Stan's scoop - so all the particles would be settled to the bottom and you'd just be injecting liquid sealant and reducing the sealing capability of the sealant for bigger holes.
Most definitely wouldn't work with the new Stan's race sealant. The "particles" are flat plastic strips about 1x5mm, and I have verified their claim that you can't shoot it through a valve body. Clogs that right up. I wonder how well even lightly clumped particles in the normal Stan's sealant would go through the injector body.
For filling, I still find the
2oz container of Stan's shot through the valve body (core removed) to be by far the best/easiest solution. Even the Stan's sealant injector was a disappointment.
Would be interested to hear the opinion of someone who has it/tried it, but I remain unconvinced this solves any problem that doesn't already have a cheaper solution.
Are the valve cores easier to remove? They didn't mention that so maybe not. My biggest complaint with the Stan's valves is that the cores can be a pain to remove and replace.
Harder than other valves? It's the same type of valve, and it's the same valve core as others. Haven't found any issues with the Stan's valves when using the Stan's valve core remover, so not sure what issues you're running into.
