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Old 01-30-07, 06:14 AM   #1
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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.
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Old 01-30-07, 06:56 AM   #2
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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.
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Old 01-30-07, 07:09 AM   #3
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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".
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Old 01-30-07, 07:15 AM   #4
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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.
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Old 01-30-07, 07:21 AM   #5
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the answer is: because.
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Old 01-30-07, 07:29 AM   #6
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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.
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Old 01-30-07, 07:30 AM   #7
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Ah heck...I didn't see Mr Beanz post before I wrote mine.
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Old 01-30-07, 07:46 AM   #8
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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.
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Old 01-30-07, 07:49 AM   #9
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For the truly interested, Wikipedia has an interesting article on the subject:

http://en.wikipedia.org/wiki/Quick_release
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Old 01-30-07, 08:57 AM   #10
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I never knew that Tullio Campanolo invented the QR....thanks for the link.
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Old 01-30-07, 09:11 AM   #11
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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>
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Old 01-30-07, 01:10 PM   #12
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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!
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Old 01-30-07, 03:24 PM   #13
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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!
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Old 01-30-07, 04:00 PM   #14
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I think the industry goofed.
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Old 01-30-07, 04:24 PM   #15
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Quote:
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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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Old 01-30-07, 05:43 PM   #16
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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!
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Old 01-30-07, 08:34 PM   #17
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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!
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Old 02-02-07, 05:35 AM   #18
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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...
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Old 02-02-07, 07:53 AM   #19
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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).
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Old 02-03-07, 07:23 AM   #20
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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.
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Old 02-03-07, 07:56 AM   #21
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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.
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Old 02-03-07, 08:58 AM   #22
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Quote:
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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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