You don't need to be an 'investor' to invest in Singletrack: 6 days left: 95% of target - Find out more
Just put some new Nobby Nic tyres on my bike, put the sealant in as normal but struggling to seat the tyre on to the rim.
I have tried do ing it manually with a tyre lever then inflating with a compressor however it keeps falling back to wards the centre of the rim. Also tried taking the core of the valve out and doing it but majority of the air is escaping around the valve.
Any other tips before I blow the remaining sealant out!
Sometimes it's just as easy to stick a tube in for a day or two to stretch the tyre onto the rim bead then remove and set up tubeless.
Bit late now you've put the sealant in, but if you are having trouble like that you can put a tube in for a day or so to get it seated on one side and in the right shape, then pop of one side only to get the tube out and add sealant.
[i]Edit, bah, beaten to it, must type faster![/i]
Thanks guys. I might try putting a tube in now then put more sealant in.
I find the tube in for a bit trick is the only way to do it with some tyres.
As above, just did the same thing this morning with a Spesh Purgatory, wouldnt seat straight out the box, needed an inner tube and 40psi overnight.
Then went straight on with a track pump
I managed to get a purg up without a tube and with only a track pump. Definitely have to use plenty of soapy water and pressure first though to get it seated then just pop a little of one bead off to get the sealant in.
I'm getting quite a dab hand with tubeless now there are 5 bikes in our household.
Best purchase I made was a Airwave airblast track pump.
http://www.chainreactioncycles.com/airwave-airblast-tubeless-tyre-track-pump/rp-prod142714
Out of stock at CRC now but there hasn't been a tyre it hasn't seated first time, including a Nobby Nic 2.8 on the plus bike.
Tyre straight out of the box, onto rim with some water on each bead then pop up they go.
Used to use a pop bottle ghetto tubeless system but decided for the £50 I paid, the pump is a much safer bet.
Well, I can add a "me too" to this thread. Currently battling with Nobby Nic Evo tyres onto Superstar XC Carbon rims and they don't show even the smallest sign of wanting to inflate. I've used a track pump, CO2 and a compressor (albeit a smallish one) and none of them helped.
I've also tried the same tyres onto a Stans Flow Ex rim (inflated first time) and some Maxxis Crossmark onto the Superstar rim (nothing doing), so it's certainly a problem with the rim rather than the rubber.
I've done plenty of these in the past, but this is the first one that might be winning. I suspect that the rims aren't tubeless compatible, but even so, I've managed to get all sorts of weird combinations going over the years, so it's annoying that this one is defeating me.
Next attempt: big-ass compressor at a local garage and then inner tube to see if I can seat one side. After that, I'll give up and stick tubes in :-/
+1 for the airblast pump. I'm not sure how it compares to the airflow from a compressor but it dumps a lot of air out very quickly which seems to do the trick. I've used it on MTB and road tubeless and they've all gone on first time. It's also a pretty decent regular track pump.
I don't know if it's simply I'm paying more attention to how tyres seat since fitting JJs to the Wazoo last year, but generally, I'm finding most tyres aren't seating brilliantly first time on various wheelsets with tubes!
Even before checking the bead markings for a concentric circle just in view above the rims, I can spin a wheel and often notice a wobble.
Good video, with a few tips:
One other thing from the comments is to remove the presta core to increase the air flow rate.
I will not give up... 🙂
Yes I always remove the core too.
Have found best results (always first time) is with WTB tubeless tape of the correct width, original Stans valves and fluid placed inside tyre before first inflation.
For those having problems, I'd happily have a go if you anywhere near NW Leicestershire 🙂