CG 125 DETAILS/HELP ?

Discussion in 'UK Motorcycles' started by laurie, Mar 22, 2008.

  1. laurie

    laurie Guest

    i pick my new honda CG125 today, my first really big bike.. does anyone know
    if it has ABS breaking or any other details that might help.. i have opted
    for a slightly larger rear tyre, a 180/55/17 and a front 120/60/17, as i was
    told in the shop the bike would handle better, and the smaller original
    tyres could rip up easily, with the raw power of the engine..

    any advice would be appreciated,

    ann xxxx
     
    laurie, Mar 22, 2008
    #1
    1. Advertisements

  2. laurie

    Dan L Guest

    The 180 section tyre is only really compatible with the CG125 Turbo.

    --
    Dan L

    Too much time to think, too little to do.


    http://thebikeshed.spaces.live.com/
    1996 Kawasaki ZR1100 Zephyr

    BOTAFOT #140 (KotL 2005/6/7)
    X-FOT#000
    DIAABTCOD #26
    BOMB#18 (slow)
    OMF#11
     
    Dan L, Mar 22, 2008
    #2
    1. Advertisements

  3. laurie

    platypus Guest

    I'd put the bigger tyre on the front IIWY, for quicker turn-in and more
    controllable stoppies. Also, the extra weight will help keep the the front
    end down when accelerating.
     
    platypus, Mar 22, 2008
    #3
  4. laurie

    Eiron Guest

    Probably best to deflate the original tyre. slip the new one over it
    and re-inflate, then put a few cable ties around to pull the beads in.
    This will overcome the problems associated with a 17" tyre on an 18" rim.
    The ABS plastics will break. The best way to check for ABS brakes is
    to go out when it's raining or snowing and brake as hard as you can.
    And, assuming you are female, are there any naked photos of you on the net?
     
    Eiron, Mar 22, 2008
    #4
  5. laurie

    prawn Guest

    IME types are overrated. For perfect handling, smother your wheels in
    chewing gum. YKIMS.
     
    prawn, Mar 22, 2008
    #5
  6. laurie

    Rudy Lacchin Guest

    This is nonsense, of course. You can keep the front end down perfectly
    adequately by filling the tyre with argon, which is much heavier than air as
    any full nose.
     
    Rudy Lacchin, Mar 22, 2008
    #6
  7. laurie

    platypus Guest

    I've had good results filling the front tyre with mercury - great thermal
    balance, stunning gyroscopic effects, and of course it corners like
    quicksilver.
     
    platypus, Mar 22, 2008
    #7
  8. laurie

    Chris H Guest

    The shaft drive will stop it from pulling wheelies.

    HTH
     
    Chris H, Mar 22, 2008
    #8
  9. Using the patented Mavis Beacon "Hunt&Peck" Technique, platypus
    Could you fit a pump to spin the mercury up when the bike's at rest? The
    gyroscopic effect should then keep it standing upright.

    Seems to me that you could get a significant weight gain by eliminating
    the need for centre and side stands. That might be slightly offset by
    the need for a bigger battery.

    Of course, you'd need an interlock to cut the pumps when the engine's
    running or you'd get unwanted effects when cornering.
     
    Wicked Uncle Nigel, Mar 22, 2008
    #9
  10. laurie

    Rudy Lacchin Guest

    A friend of mine once told me a story about things filled with mercury... I
    wonder if this is an urban legend? Google yields nothing. Anyone heard
    this one?

    At the engineering company where my friend used to work there was an old
    chap who used to ride his bicycle in every day. On one occasion as he was
    pushing the bicycle out of the main gates at the end of the afternoon shift,
    he dropped it. The security guard noticed that he was having some
    difficulty in picking it back up again so he went to help him, only to
    discover that he couldn't pick it up either.

    Closer examination revealed that the frame had been filled with mercury
    which the bike's owner intended to sell and pocket the cash. Little
    surprise he'd been unable to get it off the ground!
     
    Rudy Lacchin, Mar 22, 2008
    #10
  11. laurie

    Eiron Guest

    No need to wonder if it's an urban legend. Just calculate it.
    You could hide about 15kg of mercury in a pushbike frame so
    there would be no problem about picking it up.

    HTH.
     
    Eiron, Mar 22, 2008
    #11
  12. laurie

    Dave Emerson Guest

    ....and countersteering.
     
    Dave Emerson, Mar 22, 2008
    #12
  13. laurie

    Dave Emerson Guest

    ....and countersteering.
     
    Dave Emerson, Mar 22, 2008
    #13
  14. laurie

    platypus Guest

    It would be possible to mould vanes into the inner surface of the tyre
    itself, although these would have to be unidirectional flaps if they were
    not to present an obstacle to the free circulation of the metal during
    deceleration and when at a standstill, and also tend to oppose the normal
    retardative efforts of the brakes. In practice, however, I believe that
    turbulence and boundary layer effects with the smooth interior surface of
    the standard, unmodified tyre would be sufficient to spin up the metal in
    the tyre within a few minutes' riding.
    Desirable though a weight gain might seem, subtracting components is not the
    way to go about it. Also, as the mercury slows down - as inevitably it
    will - the gyroscopic effect will lessen and the bike will fall gradually to
    one side. The various stands and props will continue to be required.
    If I was going to use pumps, I'd want them running all the time. Taking a
    control signal from the countersteering adaptor would allow fine control
    over the gyroscopic effect, up to and including actually backing the pumps
    to allow rapid pitch-in into corners, and also varied according to the
    bike's speed. This would effectively be a speed-sensitive,
    variable-assistance power steering system for bikes, which would be a
    significant advance. It could also be linked to a speed-control system, and
    allow a programmed destabilisation of the bike if the speed limit was
    exceeded. This would be a gradual effect, encouraging riders to slow down,
    and pitching them off on their ear if they did not.
     
    platypus, Mar 23, 2008
    #14
  15. laurie

    Dave Emerson Guest

    Fly-by-wire fighters achieve great cornering by being unstable and having
    the computers stop them from going in all directions at once; if you then
    want to turn left you just stop stopping it from going left. We could apply
    the same to the bike system but you may need a 4-point harness to keep the
    rider on the bike as it corners.
     
    Dave Emerson, Mar 23, 2008
    #15
  16. laurie

    platypus Guest

    I've been thinking about this, and we may be missing a trick here. Simply
    allowing the mercury to be spun up by the rotation of the front wheel is all
    very well, but it might be more effective to have a lesser amount of mercury
    running in a concentric tube at very high speed. This would be achieved by
    a magnetic field using contra-rotating rare-earth magnets and eddy currents.
    The magnets could be cooled by running the petrol supply through them, which
    would de-ionise the petrol and improve mpg. Also. with fine magnetic
    control over the mercury, it would be possible to set up a helical flow in
    the tube to enhance traction bias.
     
    platypus, Mar 23, 2008
    #16
  17. laurie

    Dave Emerson Guest

    ya butt, how do you counteract the reverse corriolis effect if you want to
    ride in the southern hemisphere?
     
    Dave Emerson, Mar 23, 2008
    #17
  18. laurie

    platypus Guest

    Reverse the polarity.
     
    platypus, Mar 23, 2008
    #18
  19. laurie

    Dave Emerson Guest

    Did you remember to bring the sonic screwdriver?
     
    Dave Emerson, Mar 23, 2008
    #19
  20. laurie

    platypus Guest

    **** that, I'm gonna cross the beams.
     
    platypus, Mar 23, 2008
    #20
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.