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Loose Pedal on semcycle?!?!?!?!?!

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rec.sport.unicycling
Published
25 October 2005
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28 October 2005
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skate4flip
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  1. I can't figure out what is wrong with my semcycle! I just got it from
    semcycle.com about 1 and 1/2 weeks ago with the upgraded pedals. Well,
    for the last 3 days i have been doing revs and attempting crank flips
    on it and my pedal keeps getting super loose. For example, i tightened
    my pedal (as much as i could with damaging it.) and when i rode today,
    all i did was a half rev and my crank feel like they sort of shift or
    something. So I kept riding and it kept "shifiting" or whatever. This
    happened yesterday and then i could unscrew the pedal with my hand. I
    checked both cranks and they are on tight. I dont think i bent them
    because i am very light and have pretty good technique.

    Oh ya, both pedals are where they should be (right on right side and
    vice versa). I was thinking of trying locktite, but im not sure yet.

    Anyone know what is going on? Is it the pedal? the crank? the axle?

    --
    skate4flip

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  2. Maybe its the cranks that are loose. Did you check those?

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  3. ya both cranks are tight.

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    skate4flip

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  4. can you wiggle the pedal at all? that is, if you push / pull on the
    pedal, in line with the axle, does the pedal move? there may be some
    bearing problems, or the pedal assembly itself may be loose (as opposed
    to the pedal's axle being loose in the crank)

    --
    maestro8

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  5. well i took the cap off the pedal and try to tighten (the axle?) but it
    was already really tight. The pedal only wiggles when it gets really
    loose in the spot where it connects to the crank. Could it be the
    bearings? would it make it feel like the pedal/crank is shifting? When
    it came in the box the frame was already connected to the wheel.

    --
    skate4flip

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  6. skate4flip said:

    The pedal only wiggles when it gets really loose in the spot where it
    connects to the crank. Could it be the bearings?

    First check out 'the Unicyclopedia's maintenance page'
    (http://en.wikibooks.org/wiki/The_Unicyclopedia:Maintenance) and follow
    their suggestions... try a little grease / anti-sieze / blue Loc-tite
    on the crank / pedal interface and see if things stay tight.

    Since the pedals are new the bearings should be in good shape... if
    you're still wondering, though, you could take the pedal apart and
    examine the bearings. See 'Brian MacKenzie's page on pedal overhaul'
    (http://londonunicyclingclub.ca/pedalbearings.htm) for the gory
    details.

    Good luck!

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  7. maestro8 said:

    First check out 'the Unicyclopedia's maintenance page'
    (http://en.wikibooks.org/wiki/The_Unicyclopedia:Maintenance) and follow
    their suggestions... try a little grease / anti-sieze / blue Loc-tite
    on the crank / pedal interface and see if things stay tight.

    Since the pedals are new the bearings should be in good shape... if
    you're still wondering, though, you could take the pedal apart and
    examine the bearings. See 'Brian MacKenzie's page on pedal overhaul'
    (http://londonunicyclingclub.ca/pedalbearings.htm) for the gory
    details.

    Good luck!

    Thanks for links. I was thinking to use loctite but wasnt sure. Would i
    be able to get blue loctite from a local hardward store (or any local
    store) or can only order online (unicycle.com)?

    --
    skate4flip

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  8. I had the same problem with my bedford 20", and have seen the problem on
    about 20 other unicycles. I used red locktite on mine straight away
    and haven't had a problem since. When you think of it, the only real
    problem with locktite is that if you ever need to replace the pedals,
    they are harder to remove or you need to replace the cranks as well. I
    have never heard of anybody replacing their pedals.

    I think this is a design defect with pedals and cranks in general,
    and that the problem ultimatelly resides in the metal of the crank
    itself, which has nothing to do with the specific brand of unicycle.
    You will notice that the metal of the pedal and that of the crank is
    very different (at least in apearance), and that the metal of the crank
    is the one that gets damaged. Perhaps somedy can be convinced to make
    a composite crank, a normal one, with the end made of the metal the
    pedal is made of... or you can just use licktite, -or weld it on for
    that matter 🙂

    --
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  9. I think a lot of us change pedals. I've broken two pedals, and have
    changed others out just out of preference.
    I've also epoxied pedals in place when they start to get loose before.
    2-ton epoxy (or something like JB Weld, which is epoxy with metal
    filings) will work great, and last a very long time. Eventually, I
    needed to change the cranks on that uni, so I blowtorched the cranks
    until the epoxy melted and I could pull out the pedal again--so it is
    reversible, but it'll dry up the grease in the pedals if you're not
    careful. Loctite has many kinds of removable glues that I'm sure would
    work just as well if not better. My situation was a bit of a special
    case where the threads were completely gone and the pedal just slipped
    in and out of it with no resistance, so I needed a good gap-filling
    glue.)

    --
    Skippii

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  10. What kind of loctite do i need to get to keep my pedals tight? Because
    at a local walmart they had many different kinds of loctite and my mom
    wasnt sure what to get. She said she didnt see red or blue or green
    loctite, but the boxes were all blue and they said were like different
    kinds of super glue or something?

    Would this be the right kind of 'loctite' (http://tinyurl.com/dtset) to
    get? If not could someone find an image of the right one? thanks.

    --
    skate4flip

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