I'm giving up with my Beto Airtank/tubeless inflator thing after about a year of frustration. I don't think that it gives anywhere near as big a rush of air as my old 2 litre PET ghetto inflator did and is largely useless. It seems that a good track pump would be as good. I've noticed some Airshot look-alikes on ebay and Aliexpress which may be better (but is 1.3L of air enough?) but I'm reluctant to waste any more money, when I could just probably go to a petrol station and seat a tyre for 50p. I thought about drilling out all the gubbins in the head of the Beto which slows down the air flow also. Anyone tried that?
i used a coke bottle with a couple of valves drilled in the lid for ages which worked fine, but i needed to clamp the tube, which was a pain
got one of these and it's been great
https://www.aliexpress.com/item/1005007706254676.html
...I could just probably go to a petrol station and seat a tyre for 50p.
You couldn't, they don't work like that now.
Set pressure target.
Measure pressure. Puff a bit in. Stop.
Measure pressure. Puff a bit in. Stop.
Measure pressure. Target met. BEEP.
Fire extinguisher ghetto inflation is where it's at if you haven't got a proper compressor with an air tank.
That's the one I've seen from China. So it gives a big rush of air. then?
The Schwalbe one I've got is <2L I'd guess. Has no issues doing a 2.5" enduro tyre. Don't know what it is rated to but I normally take it to about 100psi and that is sufficient. I'd never take my coke bottle that high, probably only got to about 70psi with that.
You can work this out using Boyles law if you assume no loss of air and change in temperature. Neither are true but it then gets a bit more complex.
Real Airshot user here (used it last night in fact for 2 wheels - both big volume Maxxis). I can't quite believe I spent so many years faffing with ghetto setups vs the ease of the Airshot. No faff with soapy water etc, just peel off the bead, bit of tyre jizz, reseat the bead, remove the valve core and bang on the Airshot - big tyre inflated straight away easy. Zero mess. Zero faff.
Only problem I have found with the Airshot is that the hose degrades and splits when a few years old, I contacted Airshot and they couldn't/wouldn't supply a replacement.
That's the one I've seen from China. So it gives a big rush of air. then?
yep 30mm 29er rims 2.4 -2.6 tyres
I've been using my faithful old Airwave Airblast track pump since I went tubeless 10yrs ago. It has a lever that switches it to fill an internal reservoir, and a flick of this lever then releases the air in one sharp blast. The reservoir isn't quite big enough to generally seat the bead of a big 29er tyre in one go, but it seals it enough that a few extra pumps of air does the job.
When I got mine it was about £60 in a Chain Reaction sale. Looks like Halfords currently do a very similar looking model for £50
Might be worth a look if you don't already have a track pump.
I'll second the ghetto Fire extinguisher method. Have always had access to a compressor but that's going soon so converted an old 5l dry powder extinguisher I had lying in the shed. There's some good vids on youtube to follow but mine was a bit different so some faffing about with connectors etc but done four 29x 2.4 tyres and its great. Good little project if you can.