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There is a large amount of pros and cons for both, a Schrader valve can hold in excess of 250psi, They use them in air conditioning and pressure vessel tanks where you have to use a compressor to pump air in them over liquid . No need for WWIII over a valve I think you better read this extract
Whereas Schrader valves are almost universal on car tyres, bicycle tubes have Dunlop, Schrader or Presta valves. Both the Schrader and the Presta types are good at sealing high pressures. Their chief differences are that Schrader valves are larger and have springs that close the valve except when the pin is depressed. Schrader valves are used in a wide variety of compressed gas and pressurized liquid applications.
Presta valve stems are 6mm diameter, whereas Schrader valve stems for bicycle tyres are 8mm, thus requiring a larger diameter hole in a bicycle rim. While not a concern on wider bike rims, it will weaken a narrow wheel rim, precluding their use on (road) racing bicycles. Another disadvantage of the Schrader is that the air chuck must depress the spring-loaded pin before air can flow during inflation, whereas the Presta valve relies solely on internal air pressure to keep it shut. This means that some air is lost while attaching and detaching pumps to Schrader valves, although this is usually nominal (most of the air which makes the "whooshing" noise when the pump is removed comes from the compressed air in the tube between the pump body and the attachment end, not the tyre via the momentarily-open Schrader valve). To fill up a bicycle tyre with a Presta-valved tube at a gas station requires an adaptor, while a Schrader-valved tube does not.
Also, closer to home, frequently used on MTB air-sprung suspension.
Lower pressure suspension designs are becoming more popular in recent times, but ~10 years ago it was common to run ~200 psi in a suspension fork.
I've seen Schrader valves on fire extinguishers before now, too.
I run lower pressure in my MTB tyres than I do in my car tyres... ~30 psi vs ~40 psi.
wohahhh that diverted my attention .. thats for sure!!!!!!! holey crap!
well im guessing your talking about cheap rims...
like i said in another thread, ive got a set of: 2013 Reynolds Strike 66mm Full carbon wheelset for sale... ... well i better get some resale out of it!!!
same as the: FFWD 2013 carbon fibre Clincher DISC wheel aswell... if theres no resale... im spewing.
but i knwo someone will buy
Last edited by DoubleSpeeded on Mon Aug 12, 2013 7:42 pm, edited 1 time in total.
well in regards to the Schrader vs Presta valve... according to the bike mechanic i spoke to a while ago said "Its not the valve that determines what pressures it holds.. its the tube quality.."
ive pumped up tubes on MTB with cheapie tubes that blew at 60psi
but as what a few has mentioned here... i personally have snapped a Presta valve too..
not the entire valve but that brass pin with the lock nut part..
i was in a rush and yanked the valve for the pump in an angle...because i hated the pressure loss when releasing so i did it as quick as possibly ...
it was slightly bent... and i think one more pump after that... it just snapped.
resulted in a new tube
i guess on the other hand, schrader wont have that problem.
I beg to differ on the "presta valves hold air better" claim. If the nut on the tip is done up properly, the air retention is about the same. If the nut is not snugged down, air escape is most definitely more rapid than from a Schraeder valve.
I had a thought, but it got run over as it crossed my mind.
Schrader valves on MTB shocks hold air just fine. I hardly ever have to add air to my forks or rear shock and they are set at around 150psi. I put air in tyres at least monthly while the shocks often get to six months. It's the rubber in the tube that lets out most.
bychosis (bahy-koh-sis): A mental disorder characterised by symptoms, such as delusions or hallucinations, that indicate impaired contact with reality not containing bicycles.
Irregardless of wheel size and valve type, I've found the skinnier the tyre, the faster the tube deflates.
Let the debate begin...
Bloody well does too exist! It even has its own Wikipedia entry;
This is a little of what wiki says;
"Irregardless is a word commonly used in place of regardless or irrespective..."
I think of it like this:
"regardless" is the Schrader valve.
"irrespective" is the Presta valve.
"irregardless" is the Dunlop valve.
We all have our preferences and we'll disagree from time to time, but my policy is "let a thousand flowers bloom".
Just as life deals out unfairness it would be the very day you win to be a saddle that my fat butt is parked on it......................
LOL! I suppose being a nice guy that I am I could put up with a Turkey slap or two as long as you don't fart and if you do fart, I would split in two and spike your butt that hard you would have to throw me away. As a reward I get two days with the young honey thou
Might depend on the rim manufacturer but I have confirmation from Pro-Lite that you can drill out the MTB rims without effect on the warranty. I presume this would be acceptable with most other brands as well but maybe you should check with your wheel manufacturer first.
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