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Crank arm length? - Page 2

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  #16  
Old 09-24.-2007
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Default Re: Crank arm length?

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Originally Posted by 531Aussie
What is it with every Yank knowing their pants inseam? Is it part of the college curriculum?
Knowing our inseam measurement is a critical component in getting our jackboots to fit right. Poor fitting jackboots screw up the pleats on our uniform pants. If there's one thing we believe here in the USofA, it's that we like our jackboots to fit right and look snappy when we liberate other people in the world from their bodies. You prolly didn't realize it but the drumbeat of the spread of freedom is tapped out by our jackboots hitting the bricks, kickin' in doors, and stompin' villagers' heads.

Jeez. Don't you get the news down under?
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  #17  
Old 09-24.-2007
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Default Re: Crank arm length?

^^ Aaaaah, mystery solved
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  #18  
Old 09-24.-2007
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Default Re: Crank arm length?

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Originally Posted by 531Aussie
Hmm, I'd say you have unusually short legs. Is that your pants inseam or your real inside leg measurement, crotch to floor? That is VERY short for someone 6ft. You've got shove the tape or the clipboard right up there to get the right measurement.

What is it with every Yank knowing their pants inseam? Is it part of the college curriculum?

I do have longish legs: my inside leg is ~35.2" (89 to 89.5cm, 'depending'..)

That was as measured when I ordered my Rock Lobster... Actually it was 32.25 inches.

The college curriculum is actually learning how to measure someone else's inseam without a tape measure...
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  #19  
Old 09-25.-2007
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Default Re: Crank arm length?

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Originally Posted by FreeHueco
The college curriculum is actually learning how to measure someone else's inseam without a tape measure...
But you still need to measure your own body parts to get a frame of reference, no?

n
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  #20  
Old 09-26.-2007
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Default Re: Crank arm length?

Quote:
Originally Posted by alienator
Knowing our inseam measurement is a critical component in getting our jackboots to fit right. Poor fitting jackboots screw up the pleats on our uniform pants. If there's one thing we believe here in the USofA, it's that we like our jackboots to fit right and look snappy when we liberate other people in the world from their bodies. You prolly didn't realize it but the drumbeat of the spread of freedom is tapped out by our jackboots hitting the bricks, kickin' in doors, and stompin' villagers' heads.

Jeez. Don't you get the news down under?
My GOD. I think this is the first American who has grasped the concept of irony. Fair play!
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  #21  
Old 09-27.-2007
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Default Re: Crank arm length?

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Originally Posted by 531Aussie
I'm not shooting the messenger, but......

I don't like that formula, in fact, I don't think anyone does
There's no pro in the world over about 5'5" is using cranks relatively that long. I don't know how Zinn still gets away with it. I'm only 6ft, and the "conservative" formula puts me on 188mm cranks. It's crazy!
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  #22  
Old 09-27.-2007
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Default Re: Crank arm length?

I should go for 195mm cranks apparently. I'm riding 175s at the moment.
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  #23  
Old 09-27.-2007
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Default Re: Crank arm length?

Quote:
Originally Posted by POGATA
But Sosenka is 6'7"!!! It says on Bike Cult that he used 190s.

What would his inseam be? I'm 6ft, and my inseam is 89.5, so his would be what, 100cm? That means Zinn and Palm would have him using ~215mm cranks . If only he knew

Last edited by 531Aussie; 09-27.-2007 at 10:02 PM.
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Old 09-27.-2007
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Default Re: Crank arm length?

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Originally Posted by El Loto
I should go for 195mm cranks apparently. I'm riding 175s at the moment.
I hope you're joking

How tall are you? If you're pretty tall, perhaps get some 180s and see what you think.

Long inseam or not, having cranks that long means getting a new bike, because of ground clearance and front wheel clearance (from your toes), and you could have even have issues with your feet smashing into your rear derailleur and chainstays
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  #25  
Old 09-27.-2007
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Default Re: Crank arm length?

Quote:
Originally Posted by 531Aussie
But Sosenka is 6'7"!!! It says on Bike Cult that he used 190s.

What would his inseam be? I'm 6ft, and my inseam is 89.5, so his would be what, 100cm? That means Zinn and Palm would have him using ~215mm cranks . If only he knew
Hmmm. I think crank length calculations are about as valuable as that whole KOPS deal, which is to say not very much. At best such calculations are only starting points. I do think, though, that Zinn's is one of the wackyest ones. Sometimes Lenny is way out there.
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  #26  
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Default Re: Crank arm length?

Quote:
Originally Posted by alienator
Hmmm. I think crank length calculations are about as valuable as that whole KOPS deal, which is to say not very much. At best such calculations are only starting points. I do think, though, that Zinn's is one of the wackyest ones. Sometimes Lenny is way out there.
I agree. There's no doubt that the 'issue' is WAY overrated. Despite big claims by some, and amazing 'testimonies' by others, pros as still smashing fantastic times on normal length cranks.

I've thought of possible formulas involving a sliding scale -- percentage of inseam reducing as the legs get longer -- but who knows? All I've concluded is that tall people, most likely, should be using longer cranks that short people, but "how much longer" is obviously the question.

The 3 main advocates of long cranks have the same story: there are all tall guys who were frustrated in the old days by 175mm being the longest cranks they could get. So they finally got some long cranks, which felt great to them, then they make up some formula to suit their preferences and generalisations. Kirby Palm got his 'formula' from, "a heap of short riders with 31-inch inseams used 170mm cranks", ergo, the magic 21.6% was born. I couldn't believe that's where he got it from. All those pages, and his formula is based just on that 'fact' and his personal preference. He knows everyone used 170s at one time, so why didn't he believe that the guys with 32" inseams were suited to 170s, or the guys with 33" inseams? Etc, etc.

Another probelm with long cranks is that they are addictive; when someone first uses them they (often) immediately notice the extra leverage (especially off the saddle on short climbs), so become hooked,and find all sorts or reasons and new positions to keep using them.

When I first got on 180s (I'm only 6ft), I was like, "wow, the leverage", so I was hooked for about a year. I was so convinced that I had an advantage that I moved my saddle to all points of the bike to make them work, ignoring the fact that my knees were in my chest, I couldn't 'get on top of the pedals', and my hamstrings and medials were killing me. The day I put 175s back on my bike I felt like Superman because I could get over the pedals and pound the crap out them


anyway, I forgot what i was talking about......oh yeah, stay out of my booze!!
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  #27  
Old 09-27.-2007
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Default Re: Crank arm length?

Quote:
Originally Posted by 531Aussie
anyway, I forgot what i was talking about......oh yeah, stay out of my booze!!
Yeah, yeah, yeah. It's not like you can actually appreciate it. You NZed'ers (Australia is just West New Zealand) can't hold yer booze. I know. I had friend visit Tucson from NZed, so I took 'em out on the town. What did he do to show his appreciation? He spent the whole day pukin' and gaggin' at local tourista places and all over the highway betwixt here and Phoenix.
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  #28  
Old 09-27.-2007
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Default Re: Crank arm length?

PARLEEEEEEEEEEEEEZ!!! New Zealanders can't drink!!!



Quote:
Originally Posted by alienator
(Australia is just West New Zealand)
Crikey!! Duck for cover At least you know what NZ is -- you must be the only Yanks who's ever even heard of it.
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  #29  
Old 09-27.-2007
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Default Re: Crank arm length?

Quote:
Originally Posted by 531Aussie
At least you know what NZ is -- you must be the only Yanks who's ever even heard of it.
That's why I'm an outcast in my country: I can point out other countries on a map; I learned another language and studied in another country; and I can pronounce "nuclear" correctly. FWIW, it's not nukular like our Fuhrer says. IMHO, if you can't pronounce nuclear, you shouldn't be allowed to have the keys to the nuclear weapons.

Maybe if you folks had the decency to produce a lot of oil, Americans might actually take interest and learn more about your part of the world. I mean, without oil, what do have to offer?
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  #30  
Old 09-28.-2007
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Default Re: Crank arm length?

Quote:
Originally Posted by alienator
That's why I'm an outcast in my country....
you poor soul ...........and, close, but it's "nookila"



Quote:
Originally Posted by alienator
Maybe if you folks had the decency to produce a lot of oil, Americans might actually take interest and learn more about your part of the world. I mean, without oil, what do have to offer?
Our half a continent load of uranium is not enough?
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