Tyre sealent in Tubular Tyres ??

b0dski

Got a slight problem. One of the Continental Competition tubs on my rims is loosing virtually all it's air within 24 hours of being pumped up to 120 psi.

Is using a sealent recomended on tubular tyres ? Also will the sealent be ok to use with valve extensions? as the rims I'm using are 50mm Aero.

Yossie

You can get gloopy stuff specifically designed for tubs that you pour into the tub (unscrew the valves, pour in, do valves back up and inflate) - never used it so not sure if its any good.

Alternative short term solution is something like Vittoria Pit Stop - I carry a couple of cans around but fortunately not had to use it yet.

One its in the tub then no problem at about using extensions.

This is the Tufo stuff, but Stan's, Vittoria etc will all do the same thing http://www.tufonorthamerica.com/accessories.php

b0dski

Cheers Yossie

So the tyre has to come off the rim so I can remove the valve extension ?? Tbh if that's the case I'm halfway there to replacing the tyre with a new one.

Yossie

Seems that way unless you have the extensions that when you fitted you took the cores apart: you could probably uncrew the extension leaving the tyre in situ, inject the gloop using a long nosed syringe then do the valve up, but it would be a bit fiddly.

If you're using tape on the tubs its only a 2 minute job to take off and re fit.

If you're popping new tubs in then maybe fill the old ones with gloop, inflate and leave to check that they have sealed then keep as spares?

magliaceleste

If you use Vittoria Pit Stop then you can put it in without removing the tub. The downside is that if it doesn't fix your problem it's a waste of about £8. Whereas Stans for example you can buy a nice sized container of it and use it as and when. However for Stan's you will need to remove the valve (or use a syringe). *Sometimes* you can get lucky and remove a valve extension and refit it without removing the tub, it's just luck.

Refitting a tub is no biggie though, especially if you use something like Jantex tape and glue. 30mins to clean the rim if required, 10 to fit the tub.

Only downside to using gloop of some sort is that the tubs will not be repariable (if you ever do want to get them repaired)

b0dski

Thanks guys. I'm new to tubs so a bit in the dark when it comes to removing and refitting. I've watched a few videos on Youtube so I'm pretty sure I can do it with no real problem.

Unsure on weather the existing tyres are either glued or taped or how the extensions were fitted as they were on the wheels when I bought them. Sounds like removing them is going to be the easiest route then either filling with sealent or purchasing new tyres.

Reading up on Comtinental Competition tubulars they seem to be pretty renowned for being easy to puncture so maybe a set of new will be best in the long run

Yossie

Dump the Competitions in next door's garden and get some Sprinters: I've used them for years and (touch wood) never had a puncture, so maybe worth looking at for you.

Tape 'em on and off you go.

Fitting is simple - 2 minute job oncve you've done one.

b0dski

Cheers for the advice Yossie. Appreciate the help.