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Re: Height of a giraffe

Started by rob.northcott · · Last activity · 15 posts · 491 views

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rec.sport.unicycling
Published
18 August 2004
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19 August 2004
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rob.northcott
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  1. A simple question that I can't get out of my head...

    When people talk about a "5-foot", or whatever, giraffe unicycle, is
    that the height of the bottom bracket, or the saddle, or something
    completely different? If it's the saddle, presumably that's measured
    when it's set up for an "average" size person.

    Rob

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  2. It is the height of the saddle. It is only a rough figure, not exact.

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  3. Thanks for that Nick 🙂

    It was just something I started thinking about and then I just had to
    find out...

    Rob

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  4. It -is- the height of the saddle, but obviously most people adjust it
    after they get it. So a 5 foot giraffe is probably anywhere from 4'6" to
    5'6". About.

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  5. nickjb said:

    *It is the height of the saddle. It is only a rough figure, not
    exact. *

    There needs to be a more consistent standardized system for tall
    unicycle sizing, so that we can describe the thing for what it is,
    without having it depend on who is riding it at the moment. We shouldn't
    have a kid riding a five-footer one moment, and an adult riding a six-
    or seven-footer the next, when it's the same unicycle. Imagine if we did
    the same thing for standard unicycles, and used only the saddle heights
    to identify them. Completely unworkable.

    I suggest using a two-number size designation for the frame, based on
    the tire size (just like a standard uni) and the length of the chain
    (distance between the hub and the bracket, whatever the tech term for
    that is). Thus we could have a 20-12" unicycle, meaning a 20" wheel with
    a 12" chain, or a 24-60", or the 36-24" that I keep pressuring Max's dad
    to build. I use a hyphen to allow for full indication of the tire size
    with a slash if desired, such as a 700/52-18" for a modestly tall uni
    with a 29" Nanoraptor tire. The chain-length number could be in inches
    or feet or mm (e.g. 700/52-458mm); the point is that it would let
    everyone in the world know exactly what we were talking about without us
    all having to know everyone's inseam measurements.

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    weeble - There can be only one... wheel

    ==============
    Another Joe in MN
    Level 2 and holding
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  6. That's an interesting idea on giraffe heights. Here's how it reflects on
    today's giraffe-riding world:

    - Non-riders never care exactly how high a giraffe is, they always
    exaggerate the height anyway. Basically a non-rider measures a giraffe
    uni from the top of the rider's head, then adding 20-50% on top of
    that.

    - Giraffe owners (and especially sellers) want their giraffes to be as
    tall as possible. Therefore they are not likely to embrace sizes that
    are less than the maximum dimension of the cycle.

    - The Schwinn U-72, their old Giraffe, was exactly 6' tall with the
    saddle set to the max. height line. That's the obvious way a
    manufacturer is going to list giraffe height.

    For those of us who need something more accurate (I never really have),
    Weeble's measurement method makes a lot of sense. For the most part, you
    don't need wheel size so I'd just go for a measurement of wheel axle to
    bottom bracket. Then you can add wheel size if it's not a 20", which the
    vast majority of giraffes are. But those few inches aren't real
    important compared to the rider's seat height.

    This measurement scheme would render my Schwinn giraffe down to
    something like 26" or so. Ouch.

    --
    johnfoss - Walkin' on the edge

    John Foss, the Uni-Cyclone
    "jfoss" at "unicycling.com" -- www.unicycling.com

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  7. Of course, if you shorten the cranks, you have to raise the seat to
    compensate.

    So the height of a giraffe would be defined by the wheel diameter
    (although radius is the actual dimension which is factored into the
    height), and the distance between the axle and the spindle, with a
    factor for the crank length.

    As wheels are always in inches, and cranks are always in mm, it makes
    perfect sense for the axle-spindle dimension to be measured in cubits.

    So a typical giraffe might be a 20 inch, 1.5 cubit, 150mm, defined as a
    20/1.5/150. For those who need to insert tyre details then it might be
    a 20x1.95/1.5/150, and if pressure is important, it could be a
    20x1.95(40psi)/1.5/150.

    Now, if you're wearing a very tall top hat, say in a parade, that could
    have aerodynamic implications so perhaps there should be a section for
    that?

    On the other hand, you could just use a nominal size giving an
    approximate idea of the height of the saddle when the unicycle is on
    maximum setting, and express it in feet.

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    Mikefule - Roland Hope School of Unicycling

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  8. P.S. Rob: whereabouts on dartmoor. My girlfriend lives 10 miles out of
    Okey, so I'm down near Dartmoor fairly often, and occasionally take the
    MUni on the moor.

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    Mikefule - Roland Hope School of Unicycling

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  9. Maybe they should be categorized on how high they -can- be.
    For example: Instead of buying a five foot giraffe, or a six foot
    giraffe, you can buy a 5 to 6 foot giraffe.

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  10. My, what a lovely navel; I could look at it all day.🙄

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    Mikefule - Roland Hope School of Unicycling

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  11. My Torker 5' will actually go to 5'11" when I raise the seat to the max.
    I am well over 6' tall and could use the seat a little higher but it is
    not worth the extra money for me. I just tell people that it is a 6'
    unicycle because that is pretty much what it is.
    The thing about people thinking it is taller than it is is true though.
    I've had people estimate the height at 10'. Surprising for me.

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    Dreaming of a KH Trials
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  12. Overestimating giraffe's height seems especially true for street
    performers who use them. Somehow an extra foot gets added to these
    unicycles - I noticed that what I'd call a 5' giraffe is a 6' giraffe in
    street performer parlance and similarly a 6 footer is a 7 footer.
    Amazing how they grow like that!

    --
    TonyMelton - Skinny butt

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    (http://gallery.unicyclist.com/albur10). Check it!
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  13. weeble said:

    We shouldn't
    have a kid riding a five-footer one moment, and an adult riding a six-
    or seven-footer the next, when it's the same unicycle.

    I disagree. The giraffe IS actually higher when the adult rides it.
    (Although not by as much as one or two feet.)

    Otherwise I agree with nickjb, the 'feet' height of giraffes is just a
    rough indication.

    Klaas Bil - Newsgroup Addict
    --
    I like the idea of not having to balance when out on a ride - joe

  14. Looks like I've started quite a discussion with my seemingly inocent
    query :eek:

    Mikefule said:

    *P.S. Rob: whereabouts on dartmoor. My girlfriend lives 10 miles out
    of Okey, so I'm down near Dartmoor fairly often, and occasionally take
    the MUni on the moor. *

    Princetown, up by the prison 🙂

    Rob

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  15. i have a three foot seat post on my 5ft raffie
    i'm not calling it an 8ftr for nobody

    i always asumed that the height was an indication from the floor to the
    seatpost bracket
    as that is the 'unchangable' (unless u change the wheel)part of the
    raffie, it makes sense to me

    love the idea of measuring it in cubits, mike

    😉

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    GILD - Waffle-[censored] (ocfopgm)

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    Namaste!
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