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  1. #1
    Non Tribuo Anus Rodentum and off to the next adventure (RIP) Stacey's Avatar
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    Dumb question ~ QR levers

    Did you ever wonder why it is that by default or common practice the QR levers for your wheels are on the left side of the bike, while the QR lever for your seat post (if you're running one, QR, not seat post) is on the right?

    Discuss.

  2. #2
    The AVatar Ninja SaabFan's Avatar
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    People put QR's on seatposts? Ok, I have no bike to examine. Someone remind me which side Shimano brake QR's are on.

    Well, think of it this way. The QR for the rear wheel kind of HAS to be on the left, no? Hence wheel releases on the left.
    Q: How many surrealists does it take to change a light bulb?
    A: FISH!

  3. #3
    your nightmare gal chipcom's Avatar
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    Quote Originally Posted by Stacey
    Did you ever wonder why it is that by default or common practice the QR levers for your wheels are on the left side of the bike, while the QR lever for your seat post (if you're running one, QR, not seat post) is on the right?

    Discuss.
    I posed that very question to Mike Pudsticker at Trek. His response: "to make BF members crazy".
    "Let us hope our weapons are never needed --but do not forget what the common people knew when they demanded the Bill of Rights: An armed citizenry is the first defense, the best defense, and the final defense against tyranny. If guns are outlawed, only the government will have guns. Only the police, the secret police, the military, the hired servants of our rulers. Only the government -- and a few outlaws. I intend to be among the outlaws" - Edward Abbey

  4. #4
    Banned. Mr. Beanz's Avatar
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    Most adjustments on seat posts are made from the rear. So QR's on the right is more convenient for most people as the majority is prolly right handed.

    Most rides that hae a QR on the seat are mtb type bikes. Made for easy adjustment without tools for adapting to terrain.

    And QR on the left of a wheel cause like th other guy said, lever wouldn't work next to the rear derailleur. You could use it reversed in the front but wouldn't be uniform.

  5. #5
    . botto's Avatar
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    the answer is: because.

  6. #6
    Warrior Cyclist cycle17's Avatar
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    The answer is:

    Wheel QRs go on the Non-Drive side by default due to the rear wheel. The lever or handle of the QR has no where to be closed properly on a multi gear bike with a deraillier. Or if the bike where to lose or snap a chain, it couldn't get wrapped around the lever and possible open it in a freak accident. The front wheel could go on either side, but to simplifiy things they keep it the same as the rear.

    The quick release seat post clamps are on the right side because the majority of people are right handed and will thus operate them with their left hand. Almost all of them are reversable and can be flipped over the go the left if you chose to do so, but most people will stand straddling the rear wheel hold the seat with their left hand and open and close the lever with thier right.
    Just Do It..

  7. #7
    Warrior Cyclist cycle17's Avatar
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    Ah heck...I didn't see Mr Beanz post before I wrote mine.
    Just Do It..

  8. #8
    ZZZZZZZZZZZZZZZZ efrobert's Avatar
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    No, I've never wondered, but now I know... Actually I don't know, because I didn't really read any of the above posts I just skimmed them, but if I decide in the future I need to know, I will actually read the above posts.

  9. #9
    The AVatar Ninja SaabFan's Avatar
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    For the truly interested, Wikipedia has an interesting article on the subject:

    http://en.wikipedia.org/wiki/Quick_release
    Q: How many surrealists does it take to change a light bulb?
    A: FISH!

  10. #10
    Warrior Cyclist cycle17's Avatar
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    I never knew that Tullio Campanolo invented the QR....thanks for the link.
    Just Do It..

  11. #11
    Non Tribuo Anus Rodentum and off to the next adventure (RIP) Stacey's Avatar
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    I understand why the lever is on the left on the rear wheel, and yes the front should follow suit.

    I was having a smoke in the shed this morning and happened to look at the bikes with QR's on the wheels & seat posts and made the observation. It all seemed rather queer for something like that, knowing how particular we, as a general group, are about things matching up and patterns and all that. <shrug>

  12. #12
    Banned. Mr. Beanz's Avatar
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    Quote Originally Posted by cycle17
    Ah heck...I didn't see Mr Beanz post before I wrote mine.

    I missed a letter in one of my words, so that might have thrown you off!

  13. #13
    Two H's!!! TWO!!!!! chephy's Avatar
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    Quote Originally Posted by Mr. Beanz
    And QR on the left of a wheel cause like th other guy said, lever wouldn't work next to the rear derailleur.
    Ah! But why is the drivetrain always on the right? Did you ever ask yourself that question? Huh? HUH?!!

    I smell a conspiracy!

  14. #14
    hello roadfix's Avatar
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    I think the industry goofed.
    .cinelli.olympic.surly.long.haul.trucker.kona.ku.surly.steamroller.
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  15. #15
    Mad bike riding scientist cyccommute's Avatar
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    Quote Originally Posted by chephy
    Ah! But why is the drivetrain always on the right? Did you ever ask yourself that question? Huh? HUH?!!

    I smell a conspiracy!
    Because horses don't like being mounted from the right side.
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  16. #16
    Banned. Mr. Beanz's Avatar
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    Quote Originally Posted by chephy
    Ah! But why is the drivetrain always on the right? Did you ever ask yourself that question? Huh? HUH?!!

    I smell a conspiracy!

    BECAUSE! ... They had to choose a side or else half the wheels would be different from the others not allowing interchangability among different brands. Most people are right handed. So back in the old days, if you got your pants or shoelace caught in the sprocket, you'd have your right hand to help release yourself form the trouble bikecycle! ...some people can't even pick their nose withthe left. I', ambidexterous..except when it comes to typing!

  17. #17
    Two H's!!! TWO!!!!! chephy's Avatar
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    Quote Originally Posted by Mr. Beanz
    BECAUSE! ... They had to choose a side or else half the wheels would be different from the others not allowing interchangability among different brands.
    Couldn't you just flip the wheel? Of course you'd be limited to a fixed gear... but that's how bikes started. Was the drive train on the left on some of those early bikes or no?

    I do notice, however, that I have a much easier time walking with the bike to my right (so the drivetrain is away from me and less likely to mess up my pants). When I'm walking the bike on my left, I bump into it all the time. But all this rational and historical stuff discussion is boring and irrelevant, cause I'm telling you, it's a conspiracy!

  18. #18
    CRIKEY!!!!!!! Cyclaholic's Avatar
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    Quote Originally Posted by Stacey
    I was having a smoke in the shed this morning and happened to look at the bikes with QR's on the wheels & seat posts and made the observation. It all seemed rather queer for something like that, knowing how particular we, as a general group, are about things matching up and patterns and all that. <shrug>
    If you were having 'a smoke' then I understand why you spent time pondering such a question...
    There are 10 types of people in the world - the ones that can count in base 2, the ones that can't count in base 2, and the ones that didn't expect this to be in base 3.

  19. #19
    Senior Member digger's Avatar
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    Quote Originally Posted by cyccommute
    Because horses don't like being mounted from the right side.

    Of course they don't, I mount horses from behind......they seem to like that..... Now c'mon, THAT was left open for a wise crack.......

    Having QRs on the left, balances the bike better because it offsets the weight of the drivetrain on the right (that's just a bunch of hooey, but it sounds scientific like).
    Originally posted by Bones_McBones: Wow Digger, wow! You've earned my respect.... I know ashoposo got werked up. You are the gutter pig of Trollheim.

  20. #20
    Non Tribuo Anus Rodentum and off to the next adventure (RIP) Stacey's Avatar
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    Quote Originally Posted by Cyclaholic
    If you were having 'a smoke' then I understand why you spent time pondering such a question...
    No 'smoke' that time, just a good old fashioned 'Boro.

  21. #21
    Senior Member Retro Grouch's Avatar
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    Quote Originally Posted by chephy
    Ah! But why is the drivetrain always on the right? Did you ever ask yourself that question? Huh? HUH?!!
    That one's easy. If the drive were on the left side the freewheel would unscrew itself unless you had a left handed thread.

    Uh - you know it must be February when I even read threads like this much less respond to them.

  22. #22
    Been Around Awhile I-Like-To-Bike's Avatar
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    Quote Originally Posted by Mr. Beanz
    I', ambidexterous..except when it comes to typing!
    I can type with one finger at a time from either hand. Yeah for me.

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