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homemade FS frame

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01 / Original posthomemade FS frameUnisk8r · 5 Jul 2004 02 / This pagePosts 1–11Page 1 of 1 · chronological order 03 / Latest replyPost #11John_childs · 5 Jul 2004

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Original section
rec.sport.unicycling archive
Published
5 July 2004
Last activity
5 July 2004
Original author
Unisk8r
Posts
11
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Public discussion
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Topics
DIY vs bike shop repairsFrame sizing

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  1. Original post
    Unisk8r
    Archived post
    #1

    OK, I was getting tired of my heavy 20" Torker LX for
    freestyle, so I took an aluminum mountain bike crown,
    sawed it apart and milled down the width, found a 1 1/8"
    aluminum steerer tube, and sawed apart an old chrome
    unistar frame for the legs (to keep the bearing holders,
    which I wasn't about to make from scratch...yet). Then I
    had a friend heliarc the crown halves and seat tube
    together, and I bolted in and glued the steel legs. Voila!
    A new, lightweight, custom freestyle frame! I was also
    able to cut off a standard 7/8" seatpost quite a bit,
    saving even more weight. I used the same seatpost clamp
    from the Torker. $5. for the crown and tube at my local
    recycled bike shop, and $20. for the chrome donor frame.
    My and my welder friend's time, though priceless, shall
    not count due to the fun of it.

    Here are a couple pics of my handiwork:

    +-------------------------------------------------------
    ---------+
    | Attachment filename: fs1.frontcrown1.jpg |
    |Download attachment:
    unicyclist.com210781| +-------------------------------------------------------
    ---------+

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  2. Unisk8r
    Archived post
    #2

    Here's from the back:

    +-------------------------------------------------------
    ---------+
    | Attachment filename: fs1.backupper.jpg |
    |Download attachment:
    unicyclist.com210783| +-------------------------------------------------------
    ---------+

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  3. Tennisgh22
    Archived post
    #3

    looks awesome! its probably just the picture playing tricks
    on my mind, but how close is the frame to touching the
    wheel? anyways, thats one

    -grant

    --
    tennisgh22

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  4. John_childs
    Archived post
    #4

    Sweet! You're having too much fun making and modifying
    your own toys.

    We need a picture showing the whole cycle in all of
    its glory.

    Have you seen the 'Pichlerrad'
    (pichlerrad.dede01.htm) unicycles? He makes a
    model called the 'Solo'
    (pichlerrad.desolo 1.htm) that has a similar
    style of crown. I think the Solo is a cool design.

    --
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    john_childs (at) hotmail (dot) com
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  5. Elmer
    Archived post
    #5

    That is one very cool looking frame.

    --
    elmer - uniimpaired

    "At 40 life begins...to show."
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  6. Daino149
    Archived post
    #6

    Wow, that's pretty sweet! So how much weight did you save?
    Can you post a pic of the bearing holders?

    Daniel

    --
    daino149 - How's it going, Texas?

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  7. Andrew_carter
    Archived post
    #7

    That's beautiful, and it looks like it would be just the
    right size and shape for freestyle. Great work!

    Andrew

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  8. Tonymelton
    Archived post
    #8
    john_childs said:

    * Have you seen the 'Pichlerrad'
    (pichlerrad.dede01.htm) unicycles? *

    Thanks for that link, John. I now know that my Picherrad is
    a "Semipro" model. I got the uni second hand and knew
    nothing about it except that it was a Picherrad and that its
    previous owner bought it in Germany. Its cool to find out
    stuff about your unis!

    Check out the walking machine on the "Spezials" page -
    wery nice!

    --
    TonyMelton - Up, up and awaaaay!

    See some photos of the first 'NZ MUni Weekend'
    (gallery.unicyclist.comNZ MUni Weekend 2004)
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  9. Johnfoss
    Archived post
    #9

    It looks very nice. And it appears the crown can be
    separated from the fork legs, like a Pichlerrad? This means
    you have a *modular* frame. You can swap out wheels and fork
    legs to fit different sized wheels. That's one of the cool
    things about the Pichler.

    --
    johnfoss - Walkin' on the edge

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

    "We choose to go to the Moon in this decade and do the other things, not
    because they are easy, but because they are hard." -- John F. Kennedy,
    1961
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  10. Unisk8r
    Archived post
    #10

    There is indeed 1/8" clearance between the tire and the
    bottom of the crown. However, on this one the legs are
    epoxied and clamped into the crown. I actually didn't
    consider modularity of the legs for a different size wheel;
    rather, I only wanted to make the crown as small as possible
    for the hookworm tire.

    The bearing holders are just standard Torker/Sun type. I
    suppose if anyone bothered to machine some aluminum ones for
    a standard 40mm bearing, with a round plug at the top of the
    bearing holder to fit into a 7/8" or 1" tube, we could
    venture into carbon fiber tubes...

    This one was fairly easy, to get parts from the used bike
    shop, and I didn't use a jig for assembly, just eyeballed
    it! It rides very true.

    The crown/seatube/shorter seatpost combo probably saved at
    least a full pound over the Torker frame.

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  11. John_childs
    Archived post
    #11
    unisk8r said:

    *There is indeed 1/8" clearance between the tire and the
    bottom of the crown. However, on this one the legs are
    epoxied and clamped into the crown. I actually didn't
    consider modularity of the legs for a different size
    wheel; rather, I only wanted to make the crown as small as
    possible for the hookworm tire. *

    The Pichlerrad Solo has lollipop style bearing holders
    rather than the main cap style. To take the unicycle apart
    to change the tire you have to remove the crown from the
    fork legs.

    The Pichlerrad Solo is an interesting design. But the design
    does have it's faults. It can be a bit tricky getting the
    legs all square and lined up when putting it back together.
    It's still a cool design and every time I see one I go
    "Ohhhh, I want one".

    --
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    john_childs (at) hotmail (dot) com
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