Stan's sealant in innertubes?

CRAIGO5000

I've just had a sods law puncture on my commute home (happened the second it started to rain). As I was replacing the tube I started to think of a way to add Stans sealant inside the innertubes - especially since this was my training road bike with Winter looming.

All my innertubes are presta but without removable cores. I have some blunt syringes which could easily penetrate them and then add the Stans as a preventative measure before patch repairing? Theory then being that the inner tube would/should be puncture proof for all of those Winter miles.

Does anyone else use Stans in this way? I've got a 500ml bottle on order for my carbon tub wheelset but can't see why the above wouldn't work.

Thanks

The Rookie

It can be done that way and often is, small nick, inject and then puncture repair (conventional glue jobby) before fitting. Better still get some removable core tubes!

About 35-40ml for a normal road sized tyre, a bit more for wider hybrid tyres.

Ouija

I've had a degree of success with aerosol based puncture repair cans for presta tyres with non removable cores....



These squirt sealant + air into the tyre at the same time. However, the air is put in the tyre specifically to escape from the tyre again (dragging the sealant through the puncture and sealing the hole) not to permanently inflate the tyre. A lot of people don't realize that last bit and seem to think the product is crap or end up squirting the whole content of the can into the tube in a frustrated attempt to keep the tyre inflated (you can seal a lot of punctures with just one can and a brief squirt for each innertube). In reality, just one inflate/deflate while spinning the wheel will start to seal the innertube and then inflate again (maybe more than once) with a regular pump over the course of ten minutes usually does the trick.

Do i carry one around with me when riding?

No. too big and bulky. I use these primarily at home on punctures that are hard to repair from the outside because they are in a odd place (too close to the valve or to close to the innertubes raised seam to get a good, airtight, bond). It saves on having to throw those tricky to repair innertubes away.

How long does the sealant last?

Haven't got a clue? Used these on a innertube at home and got another puncture the next day that auto sealed itself (after a few inflates with the regular pump i do keep in my backpack), so who knows. I imagine the sealant varies between manufacturers but i'd be suprised any of them last as long as a dedicated "long term" tubeless sealant like stans.

Just some food for thought.

Oh! And you need one of those Schraeder to Presta converter caps to use these.

JackPozzi

I've used it on my winter bikes for the last couple of years and it's worked well. Messing about with syringes does seem a lot of hassle though, must be easier to just buy a couple of removable core tubes?

CRAIGO5000

Fair point guys.

The reason I want to use Stans is because it's rated so highly in tubs and I'll have loads left over for my Winter clinchers and may even convert my Mavics to tubeless. Plus I like the idea of using it in a preventative way.

I think I'll do as above and source 2 removable valve prestas and use those as Winter runners.

Cheers