Presta Valve - Help!
- Thread starter colinr
- Start date
Page may contain affiliate links. Please see terms for details.
Femto
New Member
- Location
- Keighley, West Yorks
Just as a matter of interest; which came first? Presta or Schrader and what's the main reason for choosing Presta over Schrader? Are Schraders too wide to fit into narrow road rims or something?
Randochap
Senior hunter
- Location
- British Columbia, Canada
colinr said:
Get a Topeak Road Morph. No tricks needed.
Yes, I think there is. When I'm pumping up a tyre after a puncture i.e. with my frame pump I always:-colinr said:
- do it with the wheel out of the frame
- balance the wheel by its valve on top of the pump
- put the end of the pump against a hard object at about waist height; tree, wall, whatever
- pump against the resistence of the wall, with one hand on the barrel of the pump and the other on the handle, keeping the wheel in place gently with my forearm.
This means that I never transmit the force of the pumping action to the valve or wheel. I can also apply a lot more effort and therefore get more air in. I use £1.99 cheapo tubes and have never ripped one.
You do need a track pump Colin. The hand pump is only for roadside repairs. I have a cheap plastic one which is light enough to fly with. You don't need one with a guauge.
Cubist
Still wavin'
- Location
- Ovver 'thill
Femto said:
I think prestas came first, but don't quote me in a pub quiz, and yes, Schraders don't fit though presta sized holes. (unless you drill them)
What's a good track pump then? How about:
http://www.edinburghbicycle.com/ebw...2&f_SortOrderID=1&f_bct=c003154c003146c003272
The hand pump is only intended for puncture repair. I was just experimenting, wish I hadn't.
Can you get flexible adaptors for that blackburn? Google finds me nothing, I'm probably asking it for the wrong thing.
http://www.edinburghbicycle.com/ebw...2&f_SortOrderID=1&f_bct=c003154c003146c003272
The hand pump is only intended for puncture repair. I was just experimenting, wish I hadn't.
Can you get flexible adaptors for that blackburn? Google finds me nothing, I'm probably asking it for the wrong thing.
- Location
- the post-brexit wasteland
A LBS will have a flexible adaptor. The only requirement is that the valve end ( female ) has a DEEP union.
With a flexible adaptor, you screw it on the Presta, and on the pump end ( male ), screw on a brass Schrader adaptor and hey-presto, you can use a garage air supply on a Presta.
Garage air supplies go up to about 85 psi. The rest you put in with your arms.
With a flexible adaptor, you screw it on the Presta, and on the pump end ( male ), screw on a brass Schrader adaptor and hey-presto, you can use a garage air supply on a Presta.
Garage air supplies go up to about 85 psi. The rest you put in with your arms.
gbb
Squire
- Location
- Peterborough
fossyant said:
I suspect we're both technically incorrect in a way. Its simply a way of retaining the rubber insert. Without that cover / nut / retainer, the rubber insert cannot be contained of course, and will be lost. (thats obvious BTW, i'm not being sarcastic
)I missed the point that this pump has a lever to 'clamp' the rubber onto the valve, so my suggestion does'nt apply to this type of pump...only the normal frame type pumps.
But, for anyone reading with a 'normal' frame type pump....my suggestion does relieve a lot of stress on the valve.
Anyways, for colins problem...perhaps the quality of tubes aint what it used to be. Ive had tubes split and seperate around the valve...that was before i even got the pump on
I think its simply the weakest point of the tube. No surprise they go once in a while.
byegad
Legendary Member
- Location
- NE England
Or change to schrader!
byegad said:
Is there any real advantage to using Presta? I apreciate you don't need to overcome the spring resistance when pumping them up and that they are probably 0.000000000045lbs lighter if you are obsessed with weight but I think they're nowhere near as convenient as Shrader. I have them on my Carlton but they came with the second hand wheels I bought. I have Shrader on my MTB and Woods on my old Raleigh and in comparison, I find Presta much more hassle to work with. So much so, that if I ever need new tubes for my Carlton, I'm going to drill the rims to fit Shrader.
