Slime problem

merlin morris said:

Simple question!

There are many thorns were I have just moved.

How do I force a presta valve core back through the valve stem with out damaging the tube after sliming it?

Thanks

I know this really isn't an answer to your question, but thought I would offer my opinion. I switched to schrader valves years ago, mainly because they were easier to Slime. Also, when you're out on the trail, and are in desperate need of a tube to get home, you can borrow either a schrader or presta stemmed tube. I drilled out the stem hole in the rim to fit schrader, and have never had a problem.

Maybe someone can tell me why presta valves are so popular. I can see no real advantage of any kind using them over schrader valves. Maybe it's just a Gucci thing...

Tom

Tmax said:

I
Maybe someone can tell me why presta valves are so popular.
Tom

Regarding slime, I have also posted this question at cyclingtech talk forum with no results. Maybe I am just ham handed. I will probably do the next tubes with a q tip. 😕

Prestas are used mainly because, the hole they make in the rim is smaller but also because the mechanism is simple, with a floor pump they are easier to fill. I bet they are much lighter also. Ever try a Dunlop?

merlin morris said:

Regarding slime, I have also posted this question at cyclingtech talk forum with no results. Maybe I am just ham handed. I will probably do the next tubes with a q tip. 😕

Prestas are used mainly because, the hole they make in the rim is smaller but also because the mechanism is simple, with a floor pump they are easier to fill. I bet they are much lighter also. Ever try a Dunlop?

No, I haven't tried a Dunlop.

I can certainly see where you would need a presta valve tube with road wheels, because of the narrow width. With mountain bike rims, that isn an issue. I have bought rims that come drilled for schrader, but have a presta insert (adapter).

As far as simplicity, I really don't see how a presta is simpler than a schrader valve. Nothing to open and close. No adapters required for pumps or compressors.

As far as weight is concerned, there can't be more that a few grams difference, but don't know for sure. If you can tell the difference, you're probably a hell of a lot better rider than I amcyclingforums.comicon12.gifOpen ↗

Anyway, I think it must be a personal preference thing. All I know, though, is since I've changed to schrader, I can slime my tubes with no problems, and other than that, I can't tell the difference as to what tube is in my tire.

Tom

Tmax said:

No, I haven't tried a Dunlop.

With mountain bike rims, that isn an issue. I have bought rims that come drilled for schrader, but have a presta insert (adapter).

Tom

[font=Times New Roman]The other thing is I want to use the same valve for all my bikes, it’s easier with the pumps. And I already own 5 presta MTB rims. And the main bike with thorn problems is a cyclocross bike. [/font]

[font=Times New Roman] [/font]

[font=Times New Roman]One other reason to use presta I think, is that they may be a bit easier to mount with the valve straight. And they have that cool little collar.[/font]

[font=Times New Roman] [/font]

[font=Times New Roman]Dunlops are still common in Germany and maybe other places somewhat like a shrader you can disassemble. Its quite annoying to use one bc the valve is slightly different diameter requiring a change with the chuck. I was very confused the first time I got one![/font]

merlin morris said:

[font=Times New Roman]The other thing is I want to use the same valve for all my bikes, it’s easier with the pumps. And I already own 5 presta MTB rims. And the main bike with thorn problems is a cyclocross bike. [/font]

[font=Times New Roman]One other reason to use presta I think, is that they may be a bit easier to mount with the valve straight. And they have that cool little collar.[/font]

[font=Times New Roman]Dunlops are still common in Germany and maybe other places somewhat like a shrader you can disassemble. Its quite annoying to use one bc the valve is slightly different diameter requiring a change with the chuck. I was very confused the first time I got one![/font]

Okay, if I had several bikes, I would use a common valve type, too...that makes a lot of sense.

I'll have to do a search on the Dunlop. I've never seen one.

Good luck solving your Slime problem.

Tom

merlin morris said:

Simple question!

There are many thorns were I have just moved.

How do I force a presta valve core back through the valve stem with out damaging the tube after sliming it?

Thanks

Not sure if they do it for presta tubes but you can buy pre-slimed tubes in the schrader style. Might be worth checking to see if presta is also available. The price I paid for a single tube would be equivalent to buying a normal tube plus the slime (only you don't have the hassle of trying to get the slime in 🙂)

i switched to tubeless using mavic dee max wheels (ust) and continental tires (ust) i als put in a bit of stans no tubes fluid in case of thorns

merlin morris said:

Simple question!

There are many thorns were I have just moved.

How do I force a presta valve core back through the valve stem with out damaging the tube after sliming it?

Thanks

i dunno if anyone has already said this cause i dont have time to read everything but how about give up with slime because its [censored] and use notubes, get a rimstrip and fluid and it'll be lighter and its [censored] easy to use

Thanks moparchris
i dunno if anyone has already
ect ect

[font=Times New Roman]Previously I asked about controlling the presta core, when installing slime. However I realized I have access to hypodermic needles. Why not let the air out and inject the tires? Has anyone tried this? A needle hole should certainly seal much quicker/reliably than a thorn hole. Right?[/font]

Ive got presta valves, and i simply used slime liners instead, they might be a little heavier but they stop a puncture.

i dont like slime, its not very good and pricey.