Tubeless Tyres -"saying the same things about tubeless tyres over and over again" Hippy read the first f**king post

Schrader -> Presta

I looked forward to all MTB tyres being Schrader in the hopefully not so distant future.

Yes. Why are tubless valves presta, no need for that shit.

What's needed is a whole new standard.

Can Schrader have removal valve cores? This isn't a rhetorical. But I suspect that might be why?

See my sneeky edit. We need a new standard. I mean, I hate the proliferation of new standards. But here, we actually need a decent option.

https://www.wiggle.co.uk/joes-no-flats-tubeless-schrader-valve-kit

Can Schrader have removal valve cores?

Yes

Why are tubless valves presta

Smaller body diameter fits rims better.

Should I carry a small bottle of sealant? Will have plugs/boots and all of that jazz

I always carry a tiny bottle of Stan's race. Mostly because I'm an idiot and never top up, but it's handy if you pinch a tire and have to plug several leaking holes at once.

Can Schrader have removal valve cores?

Yes. Car valves have removable cores. Removing them is the more subtle version of knifing a car's tyres.

Yes.

Schrader already exists and has fittings everywhere. They have removable cores. They're bigger so allows more airflow which is an issue popping tubeless and adding sealant. You can buy them now.

Always bring sealant. If you get a big cut, by the time you’ve sealed it with a worm or three a load of sealant will have been lost, and it’s pretty key to put some back in. That’s why a strong pump like those Lezyne ones are also useful.

On the other hand, four tubes seems like way too much. It’s called tubeless for a reason! One is fine if you’ve set everything up properly. Two if you are very worried. In four years of pretty wild trips I’ve only had to put a tube in twice and both have been after fairly catastrophic crashes.

Have you seen spotter’s tubeless repair kit guide? Might even be linked in the first post. That’s still the go to. Man, I love tubeless worms.

I've got 3 tubes in my kit for the TNR route but that's so if I have to replace two I've got one spare to swap out in case I get another flat (and I'll repair the one I'd swap out). Obviously 4 means you can replace both tubes which is sort of nice.

I've not used it personally (I only know of it having seen loads of guys in Italy carrying a taped bottle to their road bike for repairing tubulars - not tubeless), but could Vittoria Pit Stop be a solution for @giofox? Anyone used this to successfully reinflate and top up sealant with a tubeless setup?

Obviously any residual hole in the tyre that wasn't already sealed with sealant/worms would need to be fixed, and there's a question mark over mixing the existing sealant in the tyre with this Vittoria stuff. But it has the potential to both top up existing sealant levels if all spaffed over the trail, while also possibly reseating the tyre due to sudden influx of pressure?

https://www.sigmasports.com/item/Vittoria/Pit-Stop-Puncture-Repair-Tyre-Sealant-75ml/89L?utm_source=google&utm_medium=base&co=GBR&cu=GBP&glCountry=GB&id=10713&ds_eid=700000001845766&ds_e=GOOGLE&ds_c=UK_EN_Profit_Google_Shopping_All+Users_Brand_All+Products_Desktop&ds_cid=71700000047514192&ds_ag=C_C_10713_Vittoria_Pit+Stop+Puncture+Repair+Tyre+Sealant+75ml_Sealant_10+GBP&ds_agid=58700004770897926&ds_k=PRODUCT_GROUP&ds_kid=92700040703429821&ds_kids=p40703429821&gclid=Cj0KCQjw7pKFBhDUARIsAFUoMDaf1blHYHjdYlqOTTejRYEkfP73vseDidyzAlLqDP8ALstsRDMDXysaAnNrEALw_wcB&gclsrc=aw.ds

From memory it's unlikley to have enough ooopmh to seat a tyre, nothing like a CO2 cartridge. Also larger than a little bottle of Stan's.

I can see you speak from experience there ;)

That is a solid option there..

And no, can't reseat the tyre with hand pump. But yes, did the no pressure check and tyre stays seated (will defo unseat out on the trails, for whatever reason)

On the other hand, four tubes seems like way too much. It’s called tubeless for a reason! One is fine if you’ve set everything up properly. Two if you are very worried. In four years of pretty wild trips I’ve only had to put a tube in twice and both have been after fairly catastrophic crashes.

I managed to pinch flat both tyres on a single day ride, and that was around Box Hill! I am scared I could do the same on day one and then would be shit scared with my only tubes inside the tyres.. you know I like to ride routes for which I am always undergeared, therefore these things happen to me.

Have you seen spotter’s tubeless repair kit guide? Might even be linked in the first post.

Yep Yep

What's the tyre/rim combo please. Need a list of "actual tubeless combos"

Another "I like to overthink emergency maintenance + buy things" option is the milkit booster stuff

https://milkit.bike/product/milkit-booster/

Which is like a water bottle, which you can then use as a booster with a handpump to give you "more of a chance" of seating a tyre.

Have not tried.

Rims are Mavic XM 819 sealed, can't really say they're good, can't wait to ding them for good and replace them. Tape is tesa 25mm, tyres are Pirelli Cinturato Gravel M 40c and 45c, really easy to setup

Rims are Mavic XM 819 sealed... Tape is tesa 25mm...

The Mavics that use nipple cups and have sealed rim bed?

Yes, we spoke about these before I think, you have/had the same right?

@Belagerent I stand incorrect, this is my other wheelset, so the rims are actually Stans Grail MK III, all the rest is the same. Love these rims.

Yeah I have one hiding somewhere in the garage.

You shouldn’t need any tape then as the rim bed is sealed.

You shouldn’t need any tape then as the rim bed is sealed.

I still needed tape (a lot of it) to get Gravelkings AC to seat properly, 3 layers on one, 4 on the other. Not to seal, but to get that snug fit.

I presume they should be best compatible with Mavic UST tyres, but haven't tried