rec.sport.unicycling · Public discussion

BC wheel dimensions?

Started by gerblefranklin · · Last activity · 7 posts · 257 views

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rec.sport.unicycling
Published
14 January 2005
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16 January 2005
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gerblefranklin
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  1. Does anyone have any advice on the dimensions of bc wheel plates?
    Tomorrow I'm gonna make a couple of sets out of 1/4 or 3/8" steel plate
    using the ironworker, and I'd like to know how much I should have them
    slung under the axle and how wide (both dimensions) the platform should
    be. Also, what should the diameter of the hole be?

    Thanks. I'll post a couple of pics if/when they're done.

    --
    gerblefranklin - Trials Unicyclist

    http://gallery.unicyclist.com/Trials-Muni

    I'm Nick's main man.

    "Democracy is just a word when the people are starving"-Immortal
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  2. I measured up my bc wheel plates. Here goes:

    The base of the plate (where you put your foot) is approx 4"x4". From
    the axel down to the top of the base is 2.75".

    I think the diameter of the hole is 5/8". This may depend on the type
    of hub/axel you get.

    Those are the basics. Some people prefer a longer base so there is more
    area to but your feet on.

    Good Luck!

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    Contender - Roman Allemann
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  3. even though gerbel hates me, i am making some full length bc plates with
    a front reinforcement wich makes them practicaly unbendable

    --
    total uni - posting is good for the soul!

    Trials is the devil - jack huges
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  4. The sizes of pedals are a good guide. The BC wheels that I've ridden
    have actually used pedals for the platforms. Usually they have been a
    couple inches below the axle. The lower the platform is from the axle,
    the easier they are to ride.

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  5. My experience:

    My old BC wheel was made with moped pegs. Basically a cheap pair of
    motorcycle foot pegs. Too cheap though. Eventually they bent and
    deformed, and stopped being useful. But I never had a problem with the
    relatively small amount of contact point. They were about 3" wide and
    oval shaped, so not much foot contact.

    But they were light.

    Next, my friend Terrell Williams scavenged the old pegs, and welded on
    some steel tubing. I put some BMX handlebar grips over that and had a
    much better set of pegs. These still rode maybe 2" or less below the
    axle. Still worked great.

    Next Zack Baldwin made me a pair of indestructable steel plates. They
    hang 3-4" below the axle, and have about a 3.5" x 3.5" foot plate (with
    grip tape on it). They work great, but they're a lot heavier than the
    previous pegs. They swing around more, so it's harder to get the thing
    rolling nice and smooth for jumping on.

    The lower your platforms, the more they'll swing around. Also, I think
    you will get more oscillation when riding. By oscillation I mean the
    wheel moving back & forth in relation to the plates. Keep the plates
    higher and this will be minimized.

    I would like to play with a BC that has really low pegs, to see how it
    handles. I've also tried David Winston's BC (many years ago), which has
    pedals welded on right at axle level. It was definitely harder to
    ride.

    Conclusions:

    - You don't need lots of plate under your feet. That mostly makes the
    thing heavier. Anything larger than a pedal is probably overkill.

    - For hang distance, I recommend keeping it relatively close to the
    axle. This will give you less swinging and oscillation, and make the
    wheel visually look more like its comic-book counterpart.

    --
    johnfoss - Walkin' on the edge

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

    "Read the rules!" -- 'IUF Rulebook'
    (http://www.unicycling.org/iuf/rulebook/) -- 'USA Rulebook'
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  6. John, if you'd like I can make my bc plates hang low, and next time we
    meet you can try/have them (whichever you want...). I'm gonna make a
    beginner set (not intended for jumping, etc), so I think I'll play
    around with 4" (I could always make it interesting and go as low as 7"
    for a 20" wheel) of hang below the axle, following the other dimensions
    given for the rest of the plates. I think I'll do a 1/2" hole, and use
    3/8-1/2" steel plate (whatever I can find in the rusty piles at the
    shop). It'll be heavy, but whatever.

    Evan, I honestly don't see how what I think of you should have anything
    to do with what you are making. But regardless, why would I care what
    you are making? It's not a competition.

    --
    gerblefranklin - Trials Unicyclist

    http://gallery.unicyclist.com/Trials-Muni

    I'm Nick's main man.

    "Democracy is just a word when the people are starving"-Immortal
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  7. Alright, I made a set of plates from 3/8" unknown rusty steel plate
    today. It took me all of 15 minutes, from the first scribe line to final
    bend. I'll post a couple of pics later tonight.

    --
    gerblefranklin - Trials Unicyclist

    http://gallery.unicyclist.com/Trials-Muni

    I'm Nick's main man.

    "Democracy is just a word when the people are starving"-Immortal
    Technique
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