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New 24"/29"/36" Frame and Handle unit i made.

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01 / Original postNew 24"/29"/36" Frame and Handle unit i made.iridemymuni · 24 Aug 2007 02 / This pagePosts 1–10Page 1 of 1 · chronological order 03 / Latest replyPost #10Hazmat · 29 Aug 2007

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Original section
rec.sport.unicycling
Published
24 August 2007
Last activity
29 August 2007
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iridemymuni
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  1. Original post
    iridemymuni
    Archived post
    #1

    Hey, i made this for a school project and thought i may as well share it
    here. its basically a unicycle frame, but the legs are telescopic so
    you can adjust the height to suit anything from a 24" through to a 36"
    wheel.

    The seatpost was welded straight on due to not enough time to weld on a
    seatpost tube etc etc, but it would have been much nicer to have an
    adjustable seat height aswell.

    the frame is fairly good at what it does. its not the best piece of
    equipment in the world but it does the job.

    and yes, there are MANY fundamental flaws. The frame is basically
    completely useless because to switch between wheels youd need another
    wheel which you would probably already have a frame for anyway. if you
    have it set on 36" height its perfect, but if you move it down to 24"
    height, the seat is way too low and you cant move it up without moving
    the frame up, which is then defeating the purpose of having the
    telescopic legs.

    Just thougth i'd post a pic of it here, might interest somebody.

    +-------------------------------------------------------------------+
    |Filename: Copy of Image033.jpg |
    |Download: http://www.unicyclist.com/attachment/21873 |
    +-------------------------------------------------------------------+

    --
    iridemymuni

    maker of the happy birthday threads

    ive got:

    John Childs, Klaas Bill, Kris Holm, Samia, Harper, Bryan Stevens,
    Wobbling bear, Mike Swarbrick, Cathwoood, Scott Wallis, Mikefule,
    Raphael (jjuggle), James Potter, ITEMNO530, DogBowl, Yoopers,
    Habbywall, Terry and Jagur.
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  2. tomtrevor
    Archived post
    #2

    how many flaws are there?

    i take it there are a few....

    one being you have to wack it with a hammer to change the length of the
    frame.

    the switch between 100mm spacing and 120mm spacing for the bearings.

    no seat post to adjust.

    is that it?

    --
    tomtrevor

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  3. iridemymuni
    Archived post
    #3
    tomtrevor said:

    how many flaws are there?

    i take it there are a few....

    one being you have to wack it with a hammer to change the length of the
    frame.

    the switch between 100mm spacing and 120mm spacing for the bearings.

    no seat post to adjust.

    is that it?

    no, there are more.

    the bolts to clamp the wheel in catch your pants

    the handlebar grips dont go on nicely.

    but oh well.

    --
    iridemymuni

    maker of the happy birthday threads

    ive got:

    John Childs, Klaas Bill, Kris Holm, Samia, Harper, Bryan Stevens,
    Wobbling bear, Mike Swarbrick, Cathwoood, Scott Wallis, Mikefule,
    Raphael (jjuggle), James Potter, ITEMNO530, DogBowl, Yoopers,
    Habbywall, Terry and Jagur.
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  4. unisk8r
    Archived post
    #4

    Gotta love the twin downtube designs! 🙂

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  5. Hazmat
    Archived post
    #5
    iridemymuni said:

    no, there are more.

    the bolts to clamp the wheel in catch your pants

    the handlebar grips dont go on nicely.

    but oh well.

    I think it's a work of art Owen. Nice job btw for doing a telescopic
    frame. 😄 😄

    --
    Hazmat

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  6. mattsmith
    Archived post
    #6

    I see potential. There are times that you want to change wheel sizes and
    carting around a spare wheel occupies less space than a spare
    unicycle.
    The idea is sound. If you can make it so that:

    - The telescopic action is smooth and doesn't need hammering.
    - The wheel is easy to replace. Is there such a thing as a
    quick-release uni wheel?!
    - Handlebar needs to be detachable. Who uses one on a 24"?
    - Adjustable seat height (obviously)
    - Change the relationship between the hub, crankset and frame.
    Ideally, the cranks would form part of the frame and wouldn't need
    changing. I really don't know how you'd do this but I reckon it would
    make it more viable.

    I'd get a 36" to commute to work on but-for 2 very steep hill sections
    that I doubt I'd be able to cope with on such a big wheel. Imagine
    there were a backpack designed to hold a wheel of various sizes up to
    36". I ride along on my 36" until I reach the steep stretch, then
    inside of a minute I've dismounted, adjusted the frame and seat height,
    swapped my wheel and stowed the 36" on my back. Away I go on a 24" or
    29" to get up the hill and repeat at the top.
    The other benefit is that by developing easy removal of parts, you
    could make it worth while to store the uni in dismantled form and
    potentially making more efficient use of storage space.
    It's a limited market, but it could be fun to develop.

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  7. zfreak220
    Archived post
    #7

    there are 'quick release bearing clamps'
    (http://www.unicyclist.com/forums/showthread.php?t=37414) available,
    just pm Jim_Rob and he'll be able to help you out.
    [image:
    http://www.unicyclist.com/forums/attachment.php?attachmentid=13880&stc=1&d=1151265070]

    --
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  8. Chexjc
    Archived post
    #8
    mattsmith said:


    I'd get a 36" to commute to work on but-for 2 very steep hill sections
    that I doubt I'd be able to cope with on such a big wheel. Imagine
    there were a backpack designed to hold a wheel of various sizes up to
    36". I ride along on my 36" until I reach the steep stretch, then
    inside of a minute I've dismounted, adjusted the frame and seat height,
    swapped my wheel and stowed the 36" on my back. Away I go on a 24" or
    29" to get up the hill and repeat at the top.
    The other benefit is that by developing easy removal of parts, you
    could make it worth while to store the uni in dismantled form and
    potentially making more efficient use of storage space.
    It's a limited market, but it could be fun to develop.

    I can't imagine myself having too much fun changing wheels on the go
    and riding up hills with a 36" wheel attached to my back.

    --
    Chexjc

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    Brian O. said:


    brendan said:


    when i flex both arms one looks puny next to the other. Mind you it was
    that way after years of badminton...

    And maybe playing a little too much with the shuttlecock as well?
    Hmm? 😉


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  9. mattsmith
    Archived post
    #9
    Chexjc said:

    I can't imagine myself having too much fun changing wheels on the go and
    riding up hills with a 36" wheel attached to my back.

    It'll be all the fashion before you know it 😉
    The wind resistance will be a killer though.

    --
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  10. Hazmat
    Archived post
    #10
    mattsmith said:

    It'll be all the fashion before you know it 😉
    The wind resistance will be a killer though.

    Yeah i remember reading somewhere a while ago about when the 'UDC 36\"
    Unicycle' (http://www.unicycle.au.com/images/shop/udc36.jpg) was going
    to come out and people were replying with "what a useless machine, it
    will never take off" and "I wouldn't buy it, it's hideous."

    😕 The weird thing is, i stay remember those phrases.
    😕

    But now look, people are riding cokers and so forth. So Owen's idea may
    well go into mass production someday and i can't wait till that day
    comes. 😄

    --
    Hazmat

    I'M 1 WEIRD AND UNUSUAL GREEK
    CYPRIOT AUSTRALIAN WHO
    IS DESTINED TO BE DIFFERENT.

    **Please vote. *'The Hazmat Poll'
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