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Changing a tub in a race?

 
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Foggo




Joined: 21 Aug 2003
Posts: 1509
Location: Kent

PostPosted: Wed Mar 20, 2019 10:08 am    Post subject: Changing a tub in a race? Reply with quote

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.
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mattsurf




Joined: 28 Sep 2016
Posts: 787
Location: Zug, Switzerland

PostPosted: Wed Mar 20, 2019 10:34 am    Post subject: Reply with quote

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
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Foggo




Joined: 21 Aug 2003
Posts: 1509
Location: Kent

PostPosted: Wed Mar 20, 2019 10:43 am    Post subject: Reply with quote

mattsurf wrote:
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


Thanks..do you already take the backing off the tape? How do you manage to rollit up without the tape sticking to itself etc?
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Jorgan




Joined: 12 Nov 2007
Posts: 18087
Location: alles was ich bin, alles was ich war

PostPosted: Wed Mar 20, 2019 11:26 am    Post subject: Reply with quote

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: 787
Location: Zug, Switzerland

PostPosted: Wed Mar 20, 2019 12:56 pm    Post subject: Reply with quote

Foggo wrote:
mattsurf wrote:
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


Thanks..do you already take the backing off the tape? How do you manage to rollit up without the tape sticking to itself etc?


No I leave the backing on the tape. I put the tape on the wheel with all backing in place, then I put the tyre on the wheel, inflate tyre and make sure it is seated well, then pull off the backing from the tape, so that it sticks to tyre (but not to rim. I leave the tyre in place for 24 hours to stretch. Then deflate tyre and remove it from the rim. The tape still has backing on it so will not stick to rim.

As Jorgan points out, make sure you pack a valve wrench if you have deep section wheels
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ttowel




Joined: 30 Sep 2008
Posts: 4122
Location: Swim School

PostPosted: Wed Mar 20, 2019 4:07 pm    Post subject: Reply with quote

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.
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Poet




Joined: 13 Apr 2007
Posts: 10074
Location: Your Mum

PostPosted: Sat Mar 23, 2019 6:12 am    Post subject: Reply with quote

Tufo track tub as a spare (Iíve 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 itís £2.49 a can and it works. They also sell CO2 for cheap.
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