Tubeless Virgin needs Experienced 'Hand'.....

[sime66]

That got your attention!  

I'm going tubeless, chaps, and after any tips and tricks so as not to arse it up; here's my questions:
1) I've got a small tub of mounting paste, and split tubeless rims, so I think fitting the tyres will be OK, but is there a knack to fitting the valve in the rim? Some grease or paste or glue?
2) I'm going to use Goop, so I have to remove the valve or squirt the Goop in the tyre before assembly; are those cheap valve tools on Ebay with a handful of spare valves a good idea, or a waste of money? Are there different lengths of valve insert?
3) Is it a good idea to use some grease or similar on the sealing 'O' ring for the split tubes, or might that damage the rubber, and maybe it's better to assemble dry?
4) My 'O' rings are round cross-section, Ø2.5 in a 3.5mm groove, so I was thinking some of this might do as spare gasket (with a blob of sealant to join?), rather than trying to find the correct ring diameter; it comes in two materials (viton and nitrile) , though, so I need to check what partenen's ref NBR70 is – this sort of thing in Ø3mm:

www.ebay.co.uk/itm/NITRILE-RUBBER-O-RING-CORD-3MM-Diameter-70-Shore-in-any-lengths-/281287811353?var=&hash=item417e0f6119:m:mX3OBMl0qQDQ1zYU7GC4VKQ

viton (much more expensive - probably don't need it anyway):
www.ebay.co.uk/itm/VITON-RUBBER-ORING-CORD-3MM-75-Shore-in-any-lengths-/271439852338?var=&hash=item3f33137332:m:moWBbXNOnCSKbzXhGza0y_A

I'm going to put my new spare on the front for a while, so it's a scrubbed-in spare when I need it – I've gone for ContiMove365. I've got the F.A. Italia split tubeless rims; hope they're OK, they seem well-made and sturdy anyway, and I think their rims are normally pretty good.

- I'll post on the split rim thread when I've got my act together - they came from Italy with parts missing...........

Any advice or things to avoid appreciated; I'm still going to wear the old ones down while I'm running-in, at least until the weather changes anyway.

[henri]

not had split tubeless myself ,but ere goes .
1, to fit valve to rim i'd go buy local tyre fitter/kwickfit a beer ,theve the right tool n do it allday an will get it right 1st time .
2 , local pushbike shops will sell cheap valve tools n valves , or its tweezers/needle nose pliers .an yes there are different length valves an also different profiles , depending on which make of valve core .
3 , not 100% sure on dry/greased assembly of rings , have seen recommendations to grease o-ring to keep it in place an i think i'd use red rubber grease for this .
4 , an dont forget new tyres are still covered in mould-release an will be slippy for 1st 50 miles or so ,so take it easy cornering/braking .lost count of guys ive seen/heard off who fitted new rubber then dumped it at 1st roundabout or even getting out the car park outside tyre place . H

[sime66]

Thanks for that, H; I see the red rubber grease, it does look like the right idea, I'll get a tub of that (brake cylinders, seals, O rings). I'll get a decent valve tool and check the valve before getting any more – it seemed a bit too good to be true getting loads of spares; I need to go to bike shop anyway. KTM will fit my valves for me if that's the best way to do it**; I'll watch him once, then do it myself – I owe him a breakfast now we're mates again. It was because of your previous advice elsewhere about new tyres still having mould release that I decided not to put an brand-new unused spare on, and to ride it about for a bit first – you can imagine fitting the spare in a hurry by the side of the road and forgetting it hasn't been scrubbed, rushing off and creating a bigger problem!

**Quick edit:
spent a moment looking on Youtube, and fitting those valves looks easy; just a bit of washing up liquid and pull them through:



...and I got a couple of these from Amazon; one for scooter toolbox and one for home tools (for a straight valve they serve as a puller too, but you don't even need that for a 90º valve).



Also partenen's ref NBR70 is Nitrile (Butadiene Rubber) shear 70, so that link above is the same material, so that looks like a good idea too.

The missing hardware has been sent today, so I think I've got this little job sorted now.

[sime66]

Winter boots are here!!
That's German efficiency for you, now just got to wait for the Italians to sort their mess out:

[quicktoys2]

Nov 3, 2015 9:11:47 GMT henri said:

not had split tubeless myself ,but ere goes .
1, to fit valve to rim i'd go buy local tyre fitter/kwickfit a beer ,theve the right tool n do it allday an will get it right 1st time .
2 , local pushbike shops will sell cheap valve tools n valves , or its tweezers/needle nose pliers .an yes there are different length valves an also different profiles , depending on which make of valve core .
3 , not 100% sure on dry/greased assembly of rings , have seen recommendations to grease o-ring to keep it in place an i think i'd use red rubber grease for this .
4 , an dont forget new tyres are still covered in mould-release an will be slippy for 1st 50 miles or so ,so take it easy cornering/braking .lost count of guys ive seen/heard off who fitted new rubber then dumped it at 1st roundabout or even getting out the car park outside tyre place . H

[quicktoys2]

Hello from Greece,
I just bought FA Italia tubeless split rims and am wondering if you can give me the dimensions of the fa Italia O-ring so I can try to buy a few spares... Thank you in advance