It's a new one on me but the Nuetech Tubliss video goes into "re setting procedure" a fair bit. I suppose you could just be unlucky. I think this is why they (Nuetech) recommend the soapy water trick.

You will always get some air come out for up to 10mins once fitted. This is just trapped air which should stop.

Always do the bounce to settle bit before fully inflating the inner or tyre.

 

Leaking air from around the valve? I guess it doesn't matter which one but I'm guessing from the rim lock valve?

Did you follow the re-sealing instructions? I.e. deflate everything, use lots of lube and then reinflate? If air is getting out from either valve hole then the high pressure bladder isn't sealing to the rim properly. You haven't nicked the liner or anything?

I haven't got much experience changing tyres with tubliss but I use slime instead of soapy water and have never lost a single psi.

Assuming it was a brand new tyre you were fitting?

 

Did you check the outer pressure over a bit of time and see that it was actually dropping or did you maybe just assume that the air coming from round the valve was coming from the outer?

Only reason I ask is as when you inflate the inner and outer there is sometimes some air in between the tubliss system and the rim which (especially if you've done a good job of fitting the rim tape) will then find it's way out through the hole in the rim tape / rim that the valve goes through.

 

get a mousse

 

The air was escaping from around the inner bladder valve.

I left it 15 minutes as I'd seen in the instruction video to do this but the pressure dropped from 8 psi down to 2 psi and was still leaking.

It's sorted now but don't know why I had so much hassle. I actually threw the entire wheel across the garage in frustration lol maybe that helped because it worked then hahaha

I tried the soapy water several times until in the end I had to take the tyre off, there must have been 500ml of water slopping around inside the tyre.

4 times it came on and off but eventually worked. I'll check the PSI again when I get home from work.

Imperfection on the tyre is what I'm thinking. God knows

 

Imperfection on the tyre is what I'm thinking. God knows

If your steps are correct, then under the circumstances that's what it sounds like to me - uneven bead width around the circumference of the tyre.

At what point are you tightening the rimlock?

 

I tried before air, 50 psi and right at the end. Still leaked though, it was a brand new mx51 but I think the imperfection thing is right.
When do you suggest to do the rim lock up though?

 

Fit then quick bounce all around. Pump inner to 110psi and then outer to 20 - 30 psi. check tyre around rim and then tighten rimlock.
Either leave at 20-30 psi and monitor it and let down to desired pressure when you want too.

 

Rim lock after pressurising.

Nice new 51 eh? Look out! There's a flying Jones about.

 

Haha don't no about that my back is wrecked after 4 hours tyre fitting lol

You doing Wales & West or the next CTR?

 

I used slime in the tyre from day one including using it as a lube when putting the tyre on and practically never even have to top up the outer tyre pressure, also didn't leave a mess when i put on a new tyre.

 

Fair one. You defo gotta be about more with a bambino. I've had a mad period of work hence me only doing MDR this year (and squeezing in the welsh). After summer holls I'll see what Autumn events are on and also do the CTR winter series as it was excellent last year.

 

Guys word of warning when fitting tyres, try and not snap the actual tyre bead on the side wall...
This has happened to me twice now...

Fitted brand new mx 51 and 52...
At hawkstone the other week managed 2 laps on practice day... And tyre had come off the rim on the broken side of the tyre... But was still fully in place on the opposite side...
Had to buy another tyre to get back up and running...

 

Dude if you're snapping beads may I suggest that you're doing it wrong? How are you mounting them? What method?

 

caveman style

 

If you're snapping beads you'll do it with mousses, tubes etc...... sounds like you need to get the bead in the well of the tyre before trying to fit/remove the tyre.....





Just gonna add.... i hadn't ridden from last May till a couple of weeks ago (cos of my knee), obviously the tyres had gone flat and the inner didn't have much (if any) left, all i've done is pump them up and they've been fine

 

I follow the tubliss install video. It's seem to be the last part of the tyre, that does it... I know the mx 51 have quite stiff side wall's....

 

It's not to do with the sidewall stiffness, you're not getting the opposite side of the bead down far enough into the rim. If you just try to horse it on it'll snap

 

must take a lot of pressure to snap the bead?

 

not as much as you might think tbh.

 

Use a bead buddy to keep the tyre in the well of the rim....

 

Snapping beads! Fair play, that's one angry bastard tyre fitter!

If you sweat, swear, strain or hear creaks from the tyre your doing something not quite right and damaging it. Sometimes the smallest thing can help lots.

Do you use a machine to "help" change your tyres or do you do it just with levers on the floor? How many levers? What lube (for the bead) are you using?

 

Yes pindie pal use a tyre fitter stand.....
I'm only 9 stone wet through Haha

 

The rear on mine leaked around the main chamber valve. Losened off the rim lock. Stopped leaking.
Lesson learned
That was a MX51 rear. In all fairness I found them so easy to fit compared to a UHD tube.

 

Don't forget the rim lock should be 15nm not guessed. You might get a leak or movement if it's not right.

 

I torque a lot of bolts but never torqued the rim lock, if i've had a leak i've given it a tweak...

 

I've always wondered if being too tight could cause a leak by squashing the tyre too much? The lock valve could also snap when you don't want to if too tight as well- not heard anyone do that but you never know.

Does anyone know how the mx51 compares with the mx52?

 

If anyone knows how Mx52's are with tubliss I'd also like to know. Prefer not to stockpile 51`s

 

Yes pindie pal I use a tyre fitters stand and 3/4 levers

 

Definitely a dodgy tyre. Just put a new mx51 on and it's fine. In fact the whole process was just easier. With the leaking tyre I couldn't get the rim inside the tyre using the supplied plate, took about 10 minutes. This time it popped right in. Didn't do anything else differently either. Definitely a tyre imperfection. I love Tubliss again lol

 

It has got warmer

 

Interesting that people are asking about the MX52 as just today I tried to get a few MX51s (from both a local dealer and Sandifords) and it would seem that they're now all gone. Helpful chap at Sandifords says the 52 is the replacement for the 51 / takes its place in the range so should be similar if not better. After Sunday I'll be off the bike for 6-10 weeks but I'll give one a go then.

In the mean time though has anyone actually tried one as yet?

 

Not me. I will though but also the Starcross 5 soft.

The 51 has proved to be a remarkable tyre. Totally wrong in theory but in practice spot on.