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big apple tire

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01 / Original postbig apple tireanton005 · 7 Jun 2007 02 / This pagePosts 1–15Page 1 of 1 · chronological order 03 / Latest replyPost #15steveyo · 8 Jun 2007

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rec.sport.unicycling
Published
7 June 2007
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8 June 2007
Original author
anton005
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ClimbingCrank arm length

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  1. Original post
    anton005
    Archived post
    #1

    I'm pretty new to Uni, I recently bought a KH 29 mainly for getting into
    some Muni later down the road, but also for riding around town. Since
    I have been mostly riding on the road I decided to get a big apple tire
    for it and save the kenda for the dirt. I just got the tire today and
    was all excited, slapped it on, finally got the rugrat to bed so I
    squeeked out for a little ride around the block. :eek: wtf? I had no
    idea it would change the ride so much. I went from being able to mount
    almost all the time to 1 out of 10! The few times I got on I was all
    over the place. I'm sure I'll get used to it, but was just blown away
    at how much if a difference it made. It really wants to go fast, alot
    faster than I was used to on the knobby tire.

    For those of you out there that use this tire, how much pressure do you
    run? I had it set up around 50 psi first, then let some air out and
    that hepled me a bunch.

    Anton

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  2. Phuni
    Archived post
    #2

    I use the Big Apple tyre with a Yuni 29er and run it around 50 to 60
    psi. If you are going over lots of bumps in your riding, the lower psi
    might be helpful, but I find the higher number to be good for speed and
    ease of gliding along (so to speak).

    Phil

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  3. steveyo
    Archived post
    #3

    I also have the KH29 and use it (when not muni-crazed) with a BA tire.
    I pump the tire up hard as rock - like 50 psi. It makes you feel the
    bumps more, but decreases the heck out of the rolling resistance. It
    turns the KH29 into a decent road racing machine, which I like for hill
    climb races which I enter.

    Did you get the BA 2.35 or the BA 2.0?

    --
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    steveyo
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    - a few 'uni race write-ups'
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    - muni and kokopelli uni 't-shirts, mugs and stickers'
    (http://www.cafepress.com/steveyo)
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  4. Wheel Rider
    Archived post
    #4

    I have a Yuni 29er with the Big Apple tire. I have been riding with
    pretty high pressure which makes bumps an issue. I recently switched
    from 127 cranks to 150 cranks which gives me more control but it seems
    to have lost that "road uni" feel.

    What size cranks are you using?

    The Big Apple is the only tire I have used on my 29er so I have nothing
    to campare with.

    --
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  5. mouse
    Archived post
    #5

    I rode the big apple for 6 months on my 29er before buying a 36" cycle.
    It works best for me at around 50-52PSI on good road. The only gripe
    on this tire is its "ability" to grab the road crown and drag you down
    with it at lower PSI. I found the tire to wear down quickly if you go
    on long rides but maybe that's just me and riding a lot. Either way,
    there's no logical way it could compete with the lifespan of a thick
    tire like the 36" wheel TA so its still a good road tire for a 29er

    --
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  6. underdog
    Archived post
    #6

    My 29er has the BA tire and 150 cranks. I like a little softer ride so
    I run mine at about 40-45. Helps cushion the bumps but I found that it
    tracks much better at 50-55. I put up with the tracking issues in
    favor of the softer ride.

    --
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  7. Erin
    Archived post
    #7

    I run my 29'er with 127 cranks and the BA at 50 psi. Like some of the
    other folks here I prefer the relatively crisp tracking at this psi
    over the softer but less precise lower psi.

    --
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  8. anton005
    Archived post
    #8

    I have the 2.35 version, and the dual hole KH moment cranks in the
    outermost hole (150's ?). I'm sure it's like everything else in this
    sport, the first time you try something new it seems much harder, and
    gets easier fairly quickly (at least the basic skills do anyway) with
    practice. I just need to get used to the new responsiveness of the
    ride.

    --
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  9. semach.the.monkey
    Archived post
    #9

    I had been experimenting with different tyres on a 26" uni before I
    decided to move up to a 29er. The first one I borrowed had a 2.5" Big
    Apple on it and I fell in love with it. Then a few weeks later I
    bought a 29er that had a 2" Big Apple, and loved that too.

    I couldn't tell you what pressure I run it at, but it's about as hard
    as I can get it with a hand pump. With 110mm cranks and the right
    tracks on my MP3 player, it goes like a bat out of hell!

    STM

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  10. PetroPro
    Archived post
    #10

    I also have a KH29 with a Big Apple and did the same thing and started
    out with a high pressure. I recently dropped the pressure down to like
    35 to 40 psi and it is a lot easier to ride. Bigger foot print and also
    more suspension effect. If you think about it, the whole reason for
    running a large volume tire is the ability to run a lower pressure for
    a more cushy ride, same as for a bicycle.

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  11. onelesscar
    Archived post
    #11
    PetroPro said:

    If you think about it, the whole reason for running a large volume tire
    is the ability to run a lower pressure for a more cushy ride, same as
    for a bicycle.

    Well...not the -whole- reason. Larger volume tires mean larger overall
    wheel diameters, which on bikes doesn't mean much but on a unicycle
    means increased speed, as you go farther with each pedal.

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  12. joemarshall
    Archived post
    #12
    PetroPro said:

    the whole reason for running a large volume tire is the ability to run a
    lower pressure for a more cushy ride, same as for a bicycle.

    It isn't the only reason. The larger tyre gives you a bigger wheel,
    more flywheel effect (more like a coker), and more 'travel' from the
    suspension effect that it gives you, so you never bottom it out.

    I'd kind of agree though that larger tyres are nice because you can run
    lower pressures, but 50PSI is already a really low pressure for a road
    tyre, compared to a typical road bike tyre at 100-120psi.

    At 30 PSI, the big apple is sluggish in turns, feels like riding
    through treacle, is much worse on crowned roads. At 50 PSI, it feels
    really fast and nimble in comparison. It feels very different to a muni
    tyre to ride, which is what makes it feel hard to ride to people
    putting them on KH29s, but once you've learnt to ride it, there are
    tons of advantages to running higher pressures.

    Joe

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  13. onebyone
    Archived post
    #13

    I am lucky. I have two KH 29ers, one with a Big Apple and one with the
    Kenda. They do feel and ride like completely different unicycles. The
    Kenda is incredibly grippy and doesn't like bitumen. The Big Apple is
    best without too much pressure, loves pavement and goes like crazy.
    Just depends on what you want. I ride different unis all the time and
    on a good day balance wise (or week) you can just jump from one to the
    other. On a not so good day balance wise (or week) the only similarity
    is the fact that they are UNICYCLES.
    If you ride and change often, it becomes less of a problem.
    So...the KH with a Big Apple is great.
    Cheers
    Mal
    www.unicycle.au.com

    --
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  14. anton005
    Archived post
    #14

    Today I rode with the inner holes on my kh moment cranks (140mm?) and
    about 40 psi in the tire, that worked pretty well for me. That was my
    first time riding with the inner holes on the cranks, felt way
    different, much better for riding on the road. It felt like my seat
    was too low when I switched to the smaller crank setting, is that
    normal? Do you raise your seat when using smaller cranks? I'm
    definitely getting the hang of it now, wish I had some time to go out
    and ride 🙁

    Anton

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  15. steveyo
    Archived post
    #15
    anton005 said:

    Today I rode with the inner holes on my kh moment cranks (140mm?) and
    about 40 psi in the tire, that worked pretty well for me. That was my
    first time riding with the inner holes on the cranks, felt way
    different, much better for riding on the road. It felt like my seat
    was too low when I switched to the smaller crank setting, is that
    normal? Do you raise your seat when using smaller cranks? I'm
    definitely getting the hang of it now, wish I had some time to go out
    and ride 🙁

    The inner holes are 125mm I believe. And, yes, you have to raise your
    seat with shorter cranks, because your foot doesn't go as low to the
    ground on the downswing of the pedaling circle.

    --
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    steveyo
    ...like having your own personal rollercoaster...

    - a few 'uni race write-ups'
    (http://home.nycap.rr.com/rduhan/uni_race_writeups/)
    - muni and kokopelli uni 't-shirts, mugs and stickers'
    (http://www.cafepress.com/steveyo)
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