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Convert From Presta to Schrader

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Convert From Presta to Schrader

Old 03-19-18, 02:45 PM
  #26  
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Originally Posted by rumrunn6 View Post
there are none


I guess the advantage to car tire valves (or schrader) is you can easily overinflate them at a gas station instead of just buying a pump which someone would want to have anyway and if you have a frame pump with schrader it is harder to inflate then a presta valve. You also actually need the plastic cap to keep dirt, mud, grime and ice out of the valve stem, which does open the possibility to replace the valve caps with those stem lights that sometimes work but usually don't. Oh and if you are running them on a narrow road rim the rim is weaker due to a larger hole and less material around it which with higher pressure is likely to lead to cracking.

If you put the pump head straight on to a presta valve and pull it straight off you won't get anything bent. If you wiggle and jiggle any valve it is likely to break or tear (tearing I see a lot more with schrader and bent cores I see more with presta)
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Old 03-19-18, 02:50 PM
  #27  
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Originally Posted by veganbikes View Post


I guess the advantage to car tire valves (or schrader) is you can easily overinflate them at a gas station instead of just buying a pump which someone would want to have anyway and if you have a frame pump with schrader it is harder to inflate then a presta valve. You also actually need the plastic cap to keep dirt, mud, grime and ice out of the valve stem, which does open the possibility to replace the valve caps with those stem lights that sometimes work but usually don't. Oh and if you are running them on a narrow road rim the rim is weaker due to a larger hole and less material around it which with higher pressure is likely to lead to cracking.

If you put the pump head straight on to a presta valve and pull it straight off you won't get anything bent. If you wiggle and jiggle any valve it is likely to break or tear (tearing I see a lot more with schrader and bent cores I see more with presta)
Don't forget - a schrader valve is far less likely to generate 13+ pages of highly amusing BF absurdity. Are Presta valve caps uncool or what?
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Old 03-19-18, 03:03 PM
  #28  
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Originally Posted by ksryder View Post
Don't forget - a schrader valve is far less likely to generate 13+ pages of highly amusing BF absurdity. Are Presta valve caps uncool or what?
True dat
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Old 03-19-18, 03:05 PM
  #29  
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Originally Posted by Witterings View Post
maybe that's a little bit too much for you to comprehend though
Nah, but to quote you, "There are however 2 ways of addressing someone's innocence with regards to a situation, one is to explain it to them politely and the other is to act like a complete .... censored emoji ..... shame you chose the latter of the two especially considering at least 2 other people seemed to appreciate the innocent humour that was intended!"

What started it was your response to a bit of innocent humor. I wonder which one of these you chose? I reckon I comprehend. You?
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Old 03-19-18, 04:38 PM
  #30  
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Originally Posted by Milton Keynes View Post
I've never had an issue airing up my tires with my air compressor and a Presta-to-Schrader adaptor. It does take a few extra seconds to pull it out of my under seat bag and screw it onto the stem, but once it's on I can put my tires up to 80 PSI where I need them.

But to each their own.
I did have another thread running on this as well to see if I could find what the problem was ... some of the chucks on the end of the inflator aren't great and were struggling to get a proper seal so you couldn't get an accurate pressure reading which I think was caused as the pin in the presta popped back out with the pressure from the air in the tyre ... it was also a lot worse on one tyre than the other where they had slightly different valves .. one had no thread / retainer and is the one that caused the worse issue.

That said having changed them over the weekend the problem's solved but had also ordered a different air chuck which arrived to day and actually seems to get a reliable seal and possibly would of cured it.

Either way testing the new chuck on both car and bike tyres today works a treat on all of them and made it an incredibly quick and easy job so happy days
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Old 03-19-18, 05:20 PM
  #31  
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Originally Posted by jj1091 View Post
Nah, but to quote you, "There are however 2 ways of addressing someone's innocence with regards to a situation, one is to explain it to them politely and the other is to act like a complete .... censored emoji ..... shame you chose the latter of the two especially considering at least 2 other people seemed to appreciate the innocent humour that was intended!"

What started it was your response to a bit of innocent humor. I wonder which one of these you chose?
And this actually applies again to a degree.... I've come into a forum asking a question I don't know the answer to and get a totally unnecessary response with a sarcastic emoji posted ... why wouldn't I defend myself .... and then for some reason you see fit to jump on the bandwagon as well .....

Go back and re-read your response ..... you took an aggressive and belittling stance making up fairy tale stuff about co-workers and inferring they may imply to me ... seriously how desperate is that .... and totally unnecessary.

You also made this comment aimed at me
now they, publicly, want to be critical of other Forum members,
Go back and read any of my posts, you won't find I've instigated any form of aggression, belittling or sarcastic emojis but if others have aimed them at me I don't think it unreasonable if I respond.

If you do feel that strongly about it you should be directing your quote above at the instigators and more to the point practice what you preach rather than being so downright hypocritical as your post was so blatantly critical of another forum member .... me.

I hope you enjoy the rest of your day.

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Old 03-19-18, 07:27 PM
  #32  
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Originally Posted by Witterings View Post
I did have another thread running on this as well to see if I could find what the problem was ... some of the chucks on the end of the inflator aren't great and were struggling to get a proper seal so you couldn't get an accurate pressure reading which I think was caused as the pin in the presta popped back out with the pressure from the air in the tyre ... it was also a lot worse on one tyre than the other where they had slightly different valves .. one had no thread / retainer and is the one that caused the worse issue.
I had issues trying to figure out how far to unscrew the core on my presta stems when using a Schrader adaptor, seems like some times air wouldn't go into the tires. Took a little adjusting to figure out where it needed to be.
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Old 03-20-18, 05:28 AM
  #33  
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Originally Posted by Witterings View Post
I've come into a forum asking a question I don't know the answer to and get a totally unnecessary response with a sarcastic emoji posted ...
You assuming that you're the arbitrator of what a 'totally unnecessary response" is, in a public forum whose purpose is to elicit responses. Expecting all responses to conform to your notion of what is necessary doesn't allow for a free and open discussion, which is what a Forum is. Looks like you're wanting to groom BikeForums into your personal ideal of a Forum. It won't happen.

why wouldn't I defend myself .... and then for some reason you see fit to jump on the bandwagon as well .....
Defend yourself? No one attacked you. A humorous comment with an emoji didn't come to your house and assault you. I thought it was in good taste. I thought it was humorous. Here, your use of "jump on the bandwagon" implies that I don't have the right to reply as I see fit, within Forum guidelines. Again, you'd prefer to be the arbitrator of who can and can't post replies, and under what conditions. I didn't jump on the bandwagon. I replied to a comment you made.

Go back and re-read your response ..... you took an aggressive and belittling stance making up fairy tale stuff about co-workers and inferring they may imply to me ... seriously how desperate is that .... and totally unnecessary.
My response was a response, neither aggressive nor belittling, but intended to imply a moral, you know, a story with a meaning. The story, however, was true. Did you mean "inferring they may APPLY to you"? It could apply to you, but I never inferred that. Again with the "unnecessary" thing.....

You also made this comment aimed at me
The reply was "aimed" at you, as are all replies. I don't know how it could be otherwise. Your choice of the word "aimed" is telling, don't you think?

Go back and read any of my posts, you won't find I've instigated any form of aggression, belittling or sarcastic emojis but if others have aimed them at me I don't think it unreasonable if I respond.
I certainly don't think it's unreasonable if you respond. That's what a forum is for. I don't particularly think it's reasonable to expect others to respond only the way you want them to, barring a separate discussion on what "reasonable" means. Anything is reasonable by definition of what the act of reasoning means. A response isn't required. Like my response.

As to what an act of aggression or belittling by you is, IMHO, to quote you,

"are you one of those people that are quite intelligent but have absolutely no personality what so ever and constantly have to try and prove to people how clever you are. If you actually offered some useful advice people may respect you but instead they just think you're a complete T%-t with a comment like that."

Hard to find anything aggressive, belittling, or sarcastic there, huh?

I hope you enjoy the rest of your day.
Thanks. I'm retired. I enjoy all my days.
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Old 03-20-18, 05:51 AM
  #34  
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Christ you're dull.
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Old 03-20-18, 06:58 AM
  #35  
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Originally Posted by veganbikes View Post
I guess the advantage to car tire valves (or schrader) is you can easily overinflate them at a gas station
How old are you?

That was definitely true decades ago in the days of straight sided rims. I don't think so today. Bicycle tire and rim interfaces have gotten better and the convenience store air compressors have gotten wussier. If you are blowing your tires off the rim while using an air compressor, maybe you should probably re-think your tire seating practices because you are pinching your inner tube under the tire bead.
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Old 03-20-18, 07:11 AM
  #36  
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Originally Posted by jj1091 View Post

A humorous comment with an emoji didn't come to your house and assault you.
Something that's meant to be humorous would normally be followed by a smiley emoji as a number of my posts are including the one referencing Trumps comments on Twitter that your toys came out of the pram over ... not one that it you hover over it clearly says Roll Eyes (Sarcastic) is seems you can't differentiate between the two and therein lies the problem.
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Old 03-20-18, 09:53 AM
  #37  
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Originally Posted by northtexasbiker View Post
What are the advantages of presta? I just assumed they deal with high pressure better. I bought a floor pump, because my bike is the only presta valve in the family so it's not a big deal, but I am able to use the compressor on all the cars/other bikes at the house.
The advantage is they are less likely to get ripped at the stem because of sloppy installation or riding low pressure for too long.

EDIT. Unless you get the metal stemmed ones I guess. lol.
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Old 03-20-18, 10:07 AM
  #38  
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Originally Posted by northtexasbiker View Post
What are the advantages of presta? .
fits in smaller rim hole..

functionally, you are only pumping against the air pressure in the tube, already, the P valve a passive check valve..

Schrader adds a spring's force you overcome to open the valve.. with each hand pump stroke,

(though there is usually a pin in the pump head opening its valve core)





...
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Old 03-20-18, 01:39 PM
  #39  
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I want to convert all my car wheels to Presta. Will I need to start a new thread?
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Old 03-20-18, 04:22 PM
  #40  
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Originally Posted by 700 View Post
I want to convert all my car wheels to Presta. Will I need to start a new thread?
I've got a couple of spare presta inner tubes that have been puncture repaired a few times I can send you if it helps on the cost front and a Schrader to Presta adapter I no longer need
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Old 03-20-18, 06:13 PM
  #41  
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Originally Posted by Retro Grouch View Post
How old are you?

That was definitely true decades ago in the days of straight sided rims. I don't think so today. Bicycle tire and rim interfaces have gotten better and the convenience store air compressors have gotten wussier. If you are blowing your tires off the rim while using an air compressor, maybe you should probably re-think your tire seating practices because you are pinching your inner tube under the tire bead.
I am older than a breadbox and younger than a redwood.

I have seen it happen on occasion and I did it once 15 year ago-ish. I don't generally blow them off at the shop but I have had an occasional blow out as every mechanic has done at least once. One of my most memorable ones was with a 26" tire which was the correct ISO diameter and width, with the right tube but it was not an exact match to the original tire on the bike and so it blew off.
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Old 03-20-18, 06:46 PM
  #42  
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Originally Posted by veganbikes View Post
I don't generally blow them off at the shop but I have had an occasional blow out as every mechanic has done at least once.
I had a brand new inner tube explode at about 45 psi using a much slower 12v car compressor a while back F... me you don't half know when they go off, granted my ears aren't great from years of drumming but I couldn't hear much and they rang for at least 30 mins after that ... didn't half scare the out of me as well.
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Old 03-20-18, 07:09 PM
  #43  
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Originally Posted by Witterings View Post
I had a brand new inner tube explode at about 45 psi using a much slower 12v car compressor a while back F... me you don't half know when they go off, granted my ears aren't great from years of drumming but I couldn't hear much and they rang for at least 30 mins after that ... didn't half scare the out of me as well.
Yeah it is scary. I used a hand pump for the longest time after that and took my time and went really slowly. Now I am faster again but it gave me some shellshock.

I should have worn earplugs and now as I get older I just forget them when I go to concerts. Luckily at home I play music at lower volumes and my amp died a while back and so my guitar is acoustic or run through my effects pedal and a set of headphones. In public I turn it up because I want to block out annoying people thinking that everywhere they go is their own private phone booth and they should just have long conversations at normal or high volume and even use speakerphone even when others are around and don't want to here their BS. Grumble grumble!
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Old 03-20-18, 08:01 PM
  #44  
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Originally Posted by Witterings View Post
I've got a couple of spare presta inner tubes that have been puncture repaired a few times I can send you if it helps on the cost front and a Schrader to Presta adapter I no longer need
Oh... ya... they're tubeless. But thanks anyway!
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Old 03-27-18, 08:28 AM
  #45  
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fwiw - a pinched tube blowout has nothing to do with a valve
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