Changing a tub in a race?

Foggo · Joined: 21 Aug 2003 Posts: 1509 Location: Kent

For those that still use tubs & use tape to stick mount them, what do you do and carry for a spare in case of a flat, especially during a race?
Do you have a spare with tape on it or pre glued? Its difficult to pre tape a tub!

Im sure the majority of the time the tape will come off the rim when you pull the tub off so whats the solution for the spare tub and how do you ensure its secure.

mattsurf · Joined: 28 Sep 2016 Posts: 852 Location: Zug, Switzerland

I take a Tufo 135g track tyre, with tufo tape pre-attached. rolled up it is roughly the size of 2 inner tubes. Also carry a blade to cut the old tyre as this makes removal much faster

I normally carry with Velcro strap under the saddle

Foggo · Joined: 21 Aug 2003 Posts: 1509 Location: Kent

Jorgan · Posted: Wed Mar 20, 2019 11:26 am Post subject:

Best thing is to use an 'old' stretched tub that's in good condition. Mount it on a wheel, ride it, then leave it on the wheel for a while to 'set'. When you remove it, tape should stay on tyre. I use the Jantex 76 now; supposedly only for alloy rims, but without tempting fate, 4 seasons & counting....it's much thinner than the white Jantex stuff too, so better crr.

A timely reminder that I need to do this again; I use a Tufo too (S3 Lite) as they roll-up small and mine has puncture belt. Fits in Trek draft box with 2x CO2 and an inflator. I need to find or buy another valve 'wrench' too, as I ride 808/disc, so would need to remove the extender for the disc.
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mattsurf · Joined: 28 Sep 2016 Posts: 852 Location: Zug, Switzerland

ttowel · Joined: 30 Sep 2008 Posts: 4127 Location: Swim School

I've used inflation foam from Decathlon. Worked a treat with an extra Co2.

Trick I use with tubs is to glue the tape on to the rim, then run your hands around the exposed tape with dirty/greasy hands

There is enough tack to keep the tyre on with high pressure, but it then rips off easily and leaves the tape behind.

Poet · Joined: 13 Apr 2007 Posts: 10148 Location: Your Mum

Tufo track tub as a spare (I’ve used it twice in a year, roll on cheapo Decathlon Vitoria Strada tyres for training)

Like Jorgan, I now use the red Jantex tape. Much smaller, less sticky and holds the tires on.

Remember - you can only use the rapid inflate repair stuff if you have proper valve extenders (one with a tub that has a removable head) and not the ones you just put on top of the tub valve.

I second the Decathlon stuff, think it’s £2.49 a can and it works. They also sell CO2 for cheap.

Wheezy · Joined: 10 Oct 2007 Posts: 1889 Location: Sub 3 (elect)

As another related, but slightly off thread point, how do people carry spare tubs on the bike? whenever I've done it I've ended up wit ha great big, horrible loopy thing sticking out the back of the saddle. Would like to be a bit more aero when carrying a spare.
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Jorgan · Posted: Mon Apr 15, 2019 10:57 am Post subject:

SGreg · Joined: 30 Jun 2010 Posts: 1112 Location: High Peak

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Poet · Joined: 13 Apr 2007 Posts: 10148 Location: Your Mum

The Tufo S3 lite ones are tiny rolled up.
As are track tubs, no more than an inner tube.

You can get everything you need in a 750ml bottle.
I used to just shove it all in.

Was a right faff to get out, but if you puncture in a race, it’s generally target time over.

Jorgan · Posted: Wed Apr 17, 2019 8:19 am Post subject:

stevemac32 · Joined: 29 Jul 2014 Posts: 10

I find that if the tyre has been on for a while and you take it off there will still be sticky residue on the rim so I don’t bother putting tape on, I did try it once but the tape on the tyre didn’t work for me, if the pressure is high say a whole 16g gas tube the tyre will stay on just be careful and slow right down on cornering as you don’t want to roll the tub.

Also, top tip when you tape the rim leave a 2” gap opposite the valve hole. When you get a puncture just push the tyre off there and the rest will just peel off easy.