Slime and non removable presta valves

[Bagofsand]

Hi, is there any tricks to get slime onto inner tubes fitted with non removable presta valves? Thanks in advance.

 

[steve_sordy]

Into inner tubes?
Yes, cut a small slit into the inner tube, on the side facing the rim. Insert the Slime, preferably without getting any Slime on the outer part of the tube. If you do get any Slime on there wipe it off and then clean up with some iso-propyl alcohol. Then apply a tube patch.

I would consider relegating that tube to a spare to carry in your backpack and instead fit a tube that has a removable valve core. Or buy a ready filled Slime tube.

Maybe I have used the wrong sealants, but I have never had much luck adding sealant through Presta valves (core removed). OK the tyres are tubeless, but the valve is common. When you think about it, if the sealant is supposed to be so good at stopping up holes in tyres/tubes why is it expected to pass so easily through the narrow Presta valve?

 

[Zimmerframe]

Make a hole in the tube large enough to get the slime in ..... but small enough for the slime to seal it

Normally easiest to just buy some with it in already.

 

[Andy.M]

When I ran tubes with slime I used to buy Continental tubes that have removable cores and used the one I took out as a spare for emergencies on the trail.

 

[Monkey Dog]

Into inner tubes?
Maybe I have used the wrong sealants, but I have never had much luck adding sealant through Presta valves (core removed). OK the tyres are tubeless, but the valve is common. When you think about it, if the sealant is supposed to be so good at stopping up holes in tyres/tubes why is it expected to pass so easily through the narrow Presta valve?

Just today, I've put Muc Off tube sealant into my tubes by removing the Presta valve core. It was a doddle.

 

[KennyB]

Once tried putting Stan's sealant into a tube. Didn't work, when the tube punctured I just got a load of liquid sealant in between the tube and the tyre. Apparently it is the spray of sealant from the tyre reacting with air that does the sealing.

 

[steve_sordy]

I use Continental Revo sealant. It is a milky white latex type, originally formulated for Continental tyres (so say Conti). If I don't shake the bottle, the sealant goes straight in through the valve. Then one day I noticed sludge at the bottom of the bottle and realised that the sealant had particles in it. Therefore for almost two years I had been leaving them in the bottle!! Once I started giving the bottle a vigorous shake, the sealant would not go through the valve.

This may explain why I used to see sealant leaking out from time to time (spurting one time). I'm assuming from the various posts above that Stan's sealant doesn't have particles in it? Further that it relies only on the sealant reacting with the air to form a seal. It obviously works, or it would not be so popular, it just doesn't sound as good.

 

[jimbob]

I've been using Halfords own brand (bike hut?) sealant filled tubes. Think they're £6 each so nice and cheap.

They seem to have a latex sealant in them, and, touch wood, haven't had a puncture since fitting them. Saves the effort of filling them yourself!

 

[Bagofsand]

Thanks for all the responses, i have ordered the Halfords ready filled tubes. Seemed the easiest way.

 

[Russell]

I tried the pre slimed tubes but I still got punchers. I just drill the rim out to ,I think, 8mm then fit Schrader valved tubes and stick half a big £15 bottle in each tyre.
I've not had a puncher ages now. I did have some trouble with a leaking valve due to slime when I tried to adjust tyre pressure on the trail so I would recommend not doing that.

 

[Growmac]

In 20 years I’ve never encountered a presta valve with a non-removable core. Are you sure? The stem unscrews about 2 mm below the little section that locks the valve closed. You can get specific tools, or it’s easy with a pair of pliers

 

[Kingerz]

In 20 years I’ve never encountered a presta valve with a non-removable core. Are you sure? The stem unscrews about 2 mm below the little section that locks the valve closed. You can get specific tools, or it’s easy with a pair of pliers

Yeah they are usually a solid unit and non-removable. I have to order ones with removeable cores. Just Google if you've somehow never seen one such as presta valve non removable core - Google Search[/QUOTE]

 

[Growmac]

Yeah they are usually a solid unit and non-removable. I have to order ones with removeable cores. Just Google if you've somehow never seen one such as presta valve non removable core - Google Search

[/QUOTE]
Must be a regional thing maybe? I just looked, and every single tube in my garage is removable core.

 

[Konanige]

Non removable is usually the cheapest crap you can get, more likely to puncture too. I really don't understand why anyone uses tubes these days, there's absolutely no advantage. If you had a slime tube in your tyre that didn't seal when it punctured, then it was probably a pinch flat, which wouldn't have happened if you were tubeless.