Re: corker, minimum inseam

bump

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I have no idea, but I do know that it isnt called a "Corker", its called
a "Coker". 😄

-Lee

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I've got a 30" inseam and ride with 150's with no problem with the short
stock Coker seatpost 🙂

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I have a 30 inch inseam and I was able ride a Coker with 150s and 170s.

Nathan, how tall was beau when he started riding?

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a search on "coker inseam" yields a lot of data...

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ive got somewear from a 26-28 inseam will this work

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The inseam measurement is not a very accurate or precise measurement for
determining if you'll fit a particular unicycle. Do you take your
trouser inseam? Do you measure up to your crotch? Different people are
going to give you different numbers.

A more accurate measurement that they use for bike fitting is your pubic
bone height. It's less comfortable to measure than your inseam, but
more accurate for the purposes of fitting a bike or a unicycle and
determining approximate seat height.

Stand with your feet about 10 inches apart.
Use an object like a thinnish hard cover book and position it between
your legs.
Pull up past the soft bits till you hit bone (ohhh, not very
comfortable).
Keep the spine of the book level with the floor.
Have someone measure from the spine of the book down to the floor.
Repeat a couple of times and take the highest measurement.
That is your pubic bone height.

You can use a sturdy ruler or other object instead of a book.

Normally this measurement is done without your shoes on. But if trying
to compare seat height for a unicycle you could use the shoes you
usually unicycle in.

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Here's a webpage to supplement John's clear explanation.

http://www.precisiontandems.com/inseam.htm

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U-Turn said:

*Here's a webpage to supplement John's clear explanation.

http://www.precisiontandems.com/inseam.htm *

I like the description there at Precision Tandems. They get the point
across that the measurement is not going to be comfortable. 🙂 And a
picture to go along with it.

Another good description I've seen for the pelvic bone height
measurement is in the Rivendell Bicycle Works paper catalog. A slightly
different method involving two wooden rulers or paint stirring sticks.
They also injected humor into the description. Unfortunately that
description and the pictures are not on the web.

I'd like to see Unicycle.com and others use the pelvic bone height (PBH)
measurement when giving minimum measurements for fitting a particular
size of unicycle. The traditional inseam measurements are too fuzzy and
can vary too much. The inseam measurement makes it difficult for
shorter people who are right on the border of fitting a particular
unicycle to know if they'll actually fit the unicycle or not. If
measurements were made using the PBH then a fairly accurate table could
be made to determine the necessary PBH to fit a particular unicycle.

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I don't know Beau's inseam but he started riding a Coker a little over a
year ago when he was 4' 10" or 4' 10 1/2". He could only use 125mm
cranks comfortably. Now that he's 5' 2", he can use 152mm for Muni. Here
is a photo of him in Jan 2004: http://tinyurl.com/5ewny

---Nathan

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