[Closed] ZTR Flow Rims - Tubeless Idiot Questions

I'm a newbie to tubeless, but I posted a thread and was told I'd just need a floor pump.

So bought some Speed king UST tyres and popped tham on my 819 rims, and tried to pump them up... not a chance in hell.
Next I thought I'd try popping in the JRA milk first and try it, this worked after I sloshed it all rond the inside of the tyre (otherwise you get a 'badger' moment)... twice even (2 wheel obviously)... so I think that the way to go with tubeless tyres in my limited experience.

Got the Flows & bought the lust version of Maxxis High Rollers. Once you have installed the yellow tape to the rim and squished the tyres around a bit they pumped up a treat with a track pump first time. Didn't use sealant to start with but added some later to make them more thorn proof.

There are two types of tubless system - the UST type, which effectively has a sealed rim with the spoke nipples on the outside rather than inside the rim, and the rim strip variety, which use a rubber rim strip (the Stans system integrates the valve with the rim strip) to create a seal between the nipple heads and the rim.
With a UST system, using a UST tyre, you don't technically need anything to create an air tight seal for the tyre to inflate. UST tyres have vulcanised rubber painted on the inside of them to make them air tight. However, you do need to pump furiously (ahem) to get them to 'seat' in order to inflate. It's mostly luck and in some cases it is impossible to do without the aid of washing up liquid (more later). Using sealant inside a UST tyre is a good idea to help mend punctures 'on the fly' but again it's not essential.

With the rim strip system (Stans, DT etc), you can use any tyre you like (although some work better than others), it doesn't have to be a UST tyre. The sealant that comes with them is used to plug all the small perforations in the tyre casing in order to make it air tight - non UST tyres are permeable to air. Obviously if you're using UST tyres with a rim strip typre system you don't need sealant, but it still helps to mend small punctures as you ride.
In order to get these systems inflated, you need to coat the sides of the tyre wall, where it interfaces with the rim, liberally with neat washing up liquid (some instructions say to dilute the washing up liquid, but it never works if you do that) and then pump again, furiously. It is the washing up liquid that creates the initial air tight seal, before the tyre seats against the rim strip.
You then need to rotate the wheel in order to spread the sealant around - you can usually see where the air is escaping from by the bubbles being blown in the washing up liquid.
It is a bit of a faff but it's well worth it once it's up and running. The ZTR rims are made by Stans and work very well with Maxxis tyres.
Hope that explains things.

What GT says is correct however... a stans rim with stans 'yellow tape' (basically seals off the spokes holes) can be used instead of the rim-stip, saves 50g but risks pulling the tyre off if you ride hard or with very low pressures. Yellow tape also allows UST tyres to be used on stans rims just like mavic UST rims.

geetee1972... you trying to confuse him? He isn't using rim strips etc!

As the first reply stated, you're fine without sealant, and you're also fine with a normal track pump. I haven't ever required to do furious pumping to get UST tyres seatet on stans rims.

You can put some sealant in though. Don't bother doing it via the valve...just pop the tyre off the rim over a large enough area to pour some in, then pop it back on, pull the tyre bead as far to the edge of the rim as you can all the way around, and inflate.

Easy as 1-2-3.

Stato - I didn't know that, thanks for pointing it out.

Cheers fellas,

Appreciate it! A little less confused now.