rec.sport.unicycling · Public discussion

Air pressure trials

Started by unitoon · · Last activity · 10 posts · 286 views

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rec.sport.unicycling
Published
17 April 2006
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18 April 2006
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unitoon
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  1. i'm hoping to get into the trials aspect of unicycling and i have a
    question i couldn't find the answer to anywhere else. first off, let me
    tell you about my uni if it makes any difference. it's a cyclepro 24"
    wheel with square tapered hubs. my question is: if i want to do jumps
    and stuff, what should the air pressure in the tire be? i'd assume it
    shouldn't be too full because it wouldn't give much but if it's too
    empty it could damage the rim. any input?

    --
    unitoon

    [image: http://img100.imageshack.us/img100/8607/uni1tm.gif]
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  2. how wide is your tire?

    --
    mornish

    "LX seats are as comfortable as bricks." lildude2
    "CX seats are bricks."
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  3. well first off you shouldn't be using that for very heavy trials 🙂.

    Its all about compromise, you want a fairly low pressure for
    jumping/hopping but a fairly high pressure for jumping off stuff/not
    damaging your rim...so therfore you must find YOUR ideal tYre pressure,
    there is no number that i can give you because it depends on heaps of
    varaibles (tyre, your weight, style of riding, atmospheric
    pressure...etc). Just pump it up and see what feels good, too hard to
    hop then lower it a bit, if your hiting your rim (you will definetly be
    able to feel this) then pump it up.

    P.S. I dont have a pressure gauge on my pump anyway 🙂

    --
    giraffe

    GizmoDuck said:


    I yanked on my foot and straigtened it and stuck the bone back into
    the skin.

    🙄
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  4. thanks. my tire is 1.75 width i think. something like that ... oh and
    it's only 20", not 24".

    --
    unitoon

    Unicycling -- the great gender equalizer. - Bmemike
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  5. I would not do hard stuff(Drops higher than 1/2 metre)with that small
    tyre.
    That is exactly the way how I killed my first uni.

    I also wouldn't jump too high. A friend of mine cracked his first uni
    when he jumped up 8 inches or so.

    So:

    1. Don't drop more than half metre!!
    2. Don't jump up more than 8 inches!!

    Generally you shouldn't do hard Stuff on such a Babyuni.
    IT IS DANGEROUS IF YOU BREAK A CRANK OR A PEDAL WHILE YOU DO THAT HARD
    STUFF! SAVE MONEY, GET REAL TRIAL OR A MUNI, THEN YOU CAN DO WHATEVER
    YOU WANT WITHOUT BEEING AFRAID! IT IS EASY TO BREAK A UNI LIKE YOURS!

    --
    Bertl

    Bertl😎
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  6. haha my mate's first uni was just a 1.75 x 20" learners uni and it
    survived awesome for a few months...he was doing 1m - 1.5m drops,
    grinding and generally thrashing it.

    tis all about technique 😎

    --
    giraffe

    evil-nick said:

    Trials biker after seeing me jump off a concrete barrier: "How do you
    keep from squashing your nuts!?"
    Me: "I use those for cushioning!"

    :p
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  7. my very first uni was some junk unicycle out of a kids magazine with
    lollipop bearings and a plastic rim and 3 big plastic spokes, the other
    day i decided to get it out and see what it could handle, i got up to
    roll hopping down a 5 stair before the rim was crushed...anyways back
    on topic.

    fill your tire up to the recommended air pressure to start with and
    then lower the air pressure until you find your "sweet spot"
    thats what i did.

    --
    unisteez
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  8. yeah... or is you have some money just get a 2.175 bmx tire(thats about
    all you rim will hold) i did that and ran it around 40psi but im
    230lbs. now i run a luna trials tire at around 22-25psi. great bounce!

    --
    trials_uni

    TRIALS 4 LIFE !
    [image: http://tinyurl.com/qz2fv ]
    'Check Out The Newbie Guide' (http://tinyurl.com/99yez)

    koebwil said:

    I'm too hardcore to type. I just punch the keyboard and delete the
    letters I don't want

    w00t...i got reply # 60666 in MR
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  9. trials_uni said:

    now i run a luna trials tire at around 22-25psi. great bounce!

    dang thats low, i thought i was running it low at 35psi. (i weigh 190
    lbs.)
    At 35psi on big drops i will feel the rim tap the ground, but if i go
    any higher then it bounces me way hard when i do a big drop, and thats
    never any fun.

    --
    unisteez
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  10. its honestly better to get a 20"
    a 24" will bend really easy unless u have a muni and evan then it will
    still not take to much of a beating(not as much as a trials...)

    --
    Mike The Uni Man

    -Mike T. Voss my initials are M.T.V. haha

    <quote from that fat weird guy at les schuab> hey man do a
    wheelie!!!!!!
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