Ah I see, clever. have you seen the WD40 and a lighter trick?

Bottle had done 5 or 6 cycles

I had a look for bottle ratings, but they were pretty vague

@gschenk, youtube.com/watch?v=EtmatxJG_zg

you pump up a bottle to ~100psi then let it all rush into the tire and force the beads into place

this is a commercial one youtube.com/watch?v=O5Tuw3ABtSI

alex: fire is scarey - the potential for disaster is huge.

Its the one thing that has put me off welding.

I recall when fatherinlaw welded my car's schnorkel.

Gas welded a tab into place. It was melty-hot and deathly quiet at the same time, like the super hot joint sucked in sound

the sheer energy sitting there in the steel, but silent.

I wanted to touch it

The pump is capable of 100 psi*, why not simply pumping the tire up directly to the desired pressure without the detour?

Is there any reason that the dp/dt(t) matters, and not just the ∆p?

@gschenk yeah - you're used to a tube. With Tubeless there is no tube

you know how sometimes the tyre just floats about when first put on? Cos its not pressing hard into the rim?

So you can be pumping by hand for a week and it still won't seat and start building pressure.

The dump of air gives a "blast" that seats the tube to maybe 10psi and then you can inflate with a pump.

Its a lot cheaper than using a CO2 cartridge to do the seating.

a tubeless tire isn't sealed against the rim when first fitted

you need a good blast to get the bead into the bead seat

or luck

I had to use luck yesterday, took an hour

took 10 mins with the bottle last time

alex: try like the picture I posted above, next time

dunno if it would work on a skinny road tyre though

wiggle.co.nz/wiggle-road-bike

250 pound BSO road bike

I thought the difficulty of seating tubeless tires cane fun clinching the rim too strongly. One pumps a tubed clincher the tire to two or 2.5 tubes the nominal pressure to force the bead snap into the groove.

I see: You need a high flow rate at the beginning to inflate it and conform enough to the rim to seal.

@gschenk The high flow rate overwhelms losses caused by small leaks that result from the tire bead not being fully in place when you start. This lets you get the pressure in the tire up, which pushes the tire tire bead into place, forming a complete seal. Its a bit of a chicken and egg scenario. Floor pumps just don't move enough air to offset the initial losses for many tire/rim combos. That, said it also does work sometimes.

I also find road tubeless harder than mountain bike tubeless. I typically have to pull the valve core, inflate once with a reservoir to seat the bead. The de-pressure, put the core in and inflate a second time with the reservoir. Bit of a hassle, but once set up I don't find there is much maintenance.

Hello!

Second commute today. Never took the save route. This morning I had 8km of straight, 0.5% incline, wide, car-free section.

On the way back I went along the river with a few km of easy technical single track. The next 8km I could coffee between single-track, tarmac, smooth gravel and rough gravel, all running parallel.

It is so bloody good I do but want to go any other way to work.

I hoped for a half-decent, botched, way to bike commute and find myself in cycling heaven.

Alas, its just for one more week in an Airbnb. Unless I find a flat that is equally will located.

I have a trouble imagining the difference between tarmac, single-track and coffee. Hello @gschenk and nice to meet you!

Cheers @Rilakkuma! Single track is a narrow…

… path that is only wide enough for one bike and much sought after by mountain bikers it seems.

I suppose they appreciate the possibility to get nicked by branches from both sides.

Coffee, however, is of not much use as a road surface. Is there a SE concerned with boating?

Tarmac is a hard road surface made from bitumen and a filler, eg gravel and pebbles.

@gschenk coffee is another name for chipseal road, and it sometimes gets applied to hard-pack gravel road. Tarmac/bitumen is asphalt or hotmix, which has no stones in it and is the smoothest surface to ride. There's also concrete which is an american thing... in my city there is exactly one concrete road, and its former railways land.

possibly coffee cos of "buzz" which comes through the bike from the road.

Anyone free for a delete vote on bicycles.stackexchange.com/a/47526/19705 ?