Big Bore, No Core!

[AngryScientist]

I had not seen these, but this is an interesting take on tubeless valves from muc-off. Removing the internal check valve core entirely seems to make a lot of sense for tubeless. Sealant always wants to gum up the valve. Looks like they took the valve external. More air flow and the valve out of the rim internals.

Anyone try a pair?

They are not cheap, as far as valves go, that's for sure.

[ikecycke]

I haven't tried the new ones, but the first generation Muc-Off tubeless valves were very poor. Not sure what it was, as they seemed about like every other valve, but the airflow was terrible.

[Mikej]

Filmores are pretty decent.

[MikeD]

I just say no to tubeless.

[Likes2ridefar]

Like to see the progress here. I’ve been using reserve and 76 project valves for a few years now almost exclusively on my all road and mtb and don’t miss presta valves at all.

[Turkle]

I used the Reserve Fillmore valves on my latest wheels.

I do very much enjoy the simplicity of use, but there is one drawback to the non-removable core design: you can't get a spoke down in there to use as a dipstick to check your sealant levels. So checking the sealant requires breaking the bead... And I don't have the compressor I'd need to reseat it. So sealant levels require some guesswork.

If anyone has any ideas on a better strategy to check sealant levels with this style valve, I'm all ears!

[tellyho]

People check sealant levels? I don't do road tubeless, but in my stable it's pump some new sealant in quarterly. No checking necessary

[Likes2ridefar]

Originally Posted by Turkle

I used the Reserve Fillmore valves on my latest wheels.

I do very much enjoy the simplicity of use, but there is one drawback to the non-removable core design: you can't get a spoke down in there to use as a dipstick to check your sealant levels. So checking the sealant requires breaking the bead... And I don't have the compressor I'd need to reseat it. So sealant levels require some guesswork.

If anyone has any ideas on a better strategy to check sealant levels with this style valve, I'm all ears!

I’ve never needed a compressor to pop a single bead back on after checking sealant levels.

[bigbill]

The new Park injector looks like it addresses sealant in the valve stem. I pull the core to inject sealant through the stem, but the Park injector inserts through the valve stem.

[sheepbleat]

Also a fan of the Fillmore: https://www.tobedetermined.cc/journa...ubeless-valves

[benb]

The local shops have kind of talked me out of all these fancy valves.

- too expensive
- regular valves can have the core removed
- removal still works best for sealant injection
- removal still works best for mounting w/air compressor
- replacement cores are < $1 in almost all cases and a $10 pack would last me forever