rec.sport.unicycling archive · Public discussion

Fixed bolt on a Sun

Started by Iamthewaltrus · · Last activity · 15 posts · 1,083 views

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rec.sport.unicycling archive
Published
8 May 2004
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8 May 2004
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Iamthewaltrus
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  1. I've got a Sun unicycle with one of those "quick release
    bolt" dealies. While the unicycle is pretty solid, the seat
    likes to twist around, no matter how tight i make it or how
    much of the grease I rub off the pole (that's an innuendo!).
    Is it feasible to drill a hole through the seat post and put
    in a fixed bolt? The lady at the bike shop told me not to
    but didn't give a reason (p.s. she's a woman).

    --
    iamthewaltrus
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  2. Thoughts?

    --
    iamthewaltrus
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  3. The style of clamp on the Sun unicycles doesn't always clamp
    tightly. And quick release levers can be worse than bolts.

    First thing to try would be to replace the quick release
    lever with a bolt. Unicycle.com sells the bolt, but a bike
    shop, or possibly even a well stocked hardware store that
    specializes in fasteners should also be able to get the same
    type of bolt. Here's the bolt in the unicycle.com catalog:
    'Seatpost bolt'
    (unicycle.comshopexd.asp). Note
    the little tab under the head of the bolt.

    Grease the threads of the bolt and then tighten the nut. The
    grease on the threads will help you get the bolt much
    tighter than with dry threads.

    If that doesn't work then get a good BMX clamp designed for
    a 7/8" (22.2
    mm) seatpost and a 1" (25.4 mm) outside diameter around the
    neck of the frame.

    Unicycle.com has some BMX style clamps: 'Odyssey'
    (unicycle.comshopexd.asp) 'Primo
    Viking'
    (unicycle.comshopexd.asp)
    'Profile'
    (unicycle.comshopexd.asp) Your
    local bike shop may have some other choices.

    --
    john_childs - Guinness Mojo

    john_childs (at) hotmail (dot) com
    Gallery: '' (unicyclist.comjohn childs)
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  4. I'd generally hope the lady at the bike shop is a woman or
    you got a problem going on there.

    --
    Robbie - Spoons Taste Good

    Jacinto is the king.
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  5. iamthewaltrus said:

    * The lady at the bike shop told me not to but didn't give
    a reason
    (p.s. she's a woman). *

    Holy [censored]! are you this guy by any chance?:
    picture.funnyjunk.comfeminist.jpg

    😄

    --
    mango - unity - as 1 stand together

    unicyclist.comalbuv16

    "...I speculated that if we all got to know each other, one lawn mower
    would be enough for any neighborhood." -Keith Cash
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  6. You are very funny mango.(seriously)

    --
    elmer - uniimpaired

    "At 40 life begins...to show."
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  7. P.S. On a Sun unicycle you can do anything you want and not
    feel the least bit guilty. Drill and bolt it, weld it,
    epoxy it, whatever it doesn't matter. (I through-bolted
    mine and it held up fine.)

    --
    elmer - uniimpaired

    "At 40 life begins...to show."
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  8. The problem I had with tightening a Sun frame is that the
    seatpost just dented a little bit more each time I tried to
    clamp down harder. My advice is make the clamp reasonably
    tight and keep adjusting it. Eventually the seatpost will
    spin less and less.

    By the way, I have the same issue (spinning, not denting)
    with my new Semcycle XL frame and GB4 seatpost. My hope is
    this problem will go away just like it did on the Sun.

    Ken

    --
    cline
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  9. My old Sem XL used to spin. The design of the clamp
    meant that as it tightened up it dented the seat post so
    it wouldn't slide up and down. It still managed to
    rotate, though.

    I replaced the old clamp with an aluminium one (from a bmx
    shop) and that holds it a lot tighter without damaging he
    seat post.

    --
    nickjb - one wheel short
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  10. i am new to the unicycling bonanza. What is a sun unicycle.
    Are they any better than other unicycles? i bet they are,
    coz u seem suuch a nice man.

    --
    Grogboy
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  11. A Sun is a low-end unicycle, nice ride for just
    getting around.

    I already got a bolt put through the seat clamp and it is
    still twisting. I think I'm just gonna drill a hole through
    the seat post and move the bolt there. Unless of course
    this is bad?

    --
    iamthewaltrus
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  12. iamthewaltrus, if you bring the uni to the Austin Juggling
    Society meeting tomorrow nite and we can take a look at it.
    We've had several people riding unis there each week for few
    weeks now. The meeting is every Thursday at 7PM, details
    'here' (juggling.place.orgregularmeetings.html)
    (ignore the old notice posted, the meetinginformation is
    otherwise up to date).

    --
    duaner - -

    duaner.
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  13. iamthewaltrus said:

    *I already got a bolt put through the seat clamp and it is
    still twisting. I think I'm just gonna drill a hole
    through the seat post and move the bolt there. Unless of
    course this is bad? *

    I wouldn't drill a hole through the frame and seatpost. It's
    just not necessary. You'll have limited future adjustment.
    What happens if you grow or change to a different brand of
    shoes with a thicker or thinner sole. A good BMX seatpost
    clamp will solve the problem.

    The two bolt 'Primo Viking clamp'
    (unicycle.comshopexd.asp) will
    definitely solve the twisting problem. The top half of the
    Primo clamp grips the seatpost and the bottom half grips the
    frame. It is very secure. I use the two bolt Primo Viking
    clamp on my stock Coker. With other clamps the seat would
    twist. With the Primo Viking clamp the seat is rock solid.

    One possible problem is that some frames have the 'cheap
    stock clamp'
    (unicycle.comshopexd.asp) spot
    welded to the frame. That makes it hard to remove the cheap
    clamp so you can replace it with a quality clamp like the
    Primo Viking. If you can remove the stock clamp then try the
    Primo Viking. It will solve any twisting problems.

    One other possible factor is that on some frames there is
    weld splatter and/or excess chrome blobs inside the neck of
    the frame where it clamps to the seatpost. If you carefully
    sand down the weld splatters and other globs the clamp may
    clamp better. Just don't go crazy with the sanding and sand
    it down too far.

    --
    john_childs - Guinness Mojo

    john_childs (at) hotmail (dot) com
    Gallery: '' (unicyclist.comjohn childs)
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  14. the half owner of the bike shop here in town is a woman, and
    she can wrench on bikes like none other...

    --
    IowaKid

    no dude, you really dont. cerial is born in the box. it grows up in the
    box. it learns how to be delicious and awsome in the box. now its in a
    jar. a jar of woe and sorrow. -- CommandoH
    ------------------------------------------------------------------------
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  15. IS A SUN UNICYCLE HOT? I DON'T MEAN LIKE AS HOT AS THE SUN
    BUT IF IT WAS A GIRL WOULD IT BE HOT?

    --
    Grogboy - wankspanner

    ------------------------------------------------
    with great power comes great responsibility.
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