big bang

Discussion in 'Australian Motorcycles' started by vifer, Mar 8, 2005.

  1. vifer

    smack Guest

    nobody picked up that you can in fact get brass chisels. Common trick at the
    steelworks is to send the apprentice off to the store for all the usual
    silly things, then once they wake up, send em for a brass chisel.
     
    smack, Mar 10, 2005
    #21
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  2. vifer

    sharkey Guest

    I wasn't sure about that one :)

    I was got good the other day by our workshop guy ... I'd just lined
    up everything perfectly on the sheet metal bender and was just locking
    the jaws into place when Maurice wanders past and says "Did you
    remember to turn that on?", waving in the direction of the other
    end of the bender. Being an idiot, I let go of the clamp for a second
    while reaching towards the imaginary power switch ...

    I can't wait to turn the power on the magnetic bender off on him ...

    -----sharks
     
    sharkey, Mar 10, 2005
    #22
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  3. vifer

    FruitLoop Guest

    I need a box of emery sparks


     
    FruitLoop, Mar 10, 2005
    #23
  4. vifer

    FruitLoop Guest


    Unless you have a clitoris , then the vibration would be a bonus
    ............thats why girls ride bb engines
     
    FruitLoop, Mar 10, 2005
    #24
  5. vifer

    Conehead Guest

    The number of cylinders?
    The size of the cylinders?
     
    Conehead, Mar 10, 2005
    #25
  6. vifer

    Theo Bekkers Guest

    Lots. Two smaller combustion chambers, better spark propagation, better
    filling and scavenging.

    Theo
     
    Theo Bekkers, Mar 11, 2005
    #26
  7. vifer

    Moike Guest

    Among other things, smaller reciprocating mass. Two litle pistons are
    much smaller than one big one.

    In addition, the ones firing together dont. they are separated bi a
    smidgin to spread the power pulse out a bit.

    Moike
     
    Moike, Mar 13, 2005
    #27
  8. vifer

    Boxer Guest

    The main difference is the size and weight of the valve train, smaller and
    lighter valves can rev higher than larger heaver ones.

    Boxer
     
    Boxer, Mar 13, 2005
    #28
  9. vifer

    Centurion Guest

    Piston engine *theory* states that power output is:

    PLANK
    ----- = HP
    k

    where:
    P = mean effective pressure (combustion pressure)
    L = length of stroke
    A = cross-section area of the cylinder
    N = number of cylinders
    K = RPM
    k = a constant to get all the units to spit out HP instead of something
    obscure like "Pascal-millimetres-cubed-degrees-per-second". So "k"
    will vary depending on what units you choose for each measurement in
    PLANK

    Note this theory is "ideal" and makes no allowance for other improvements
    and losses in power (such as scavenging/volumetric efficiency etc). In
    short, for a given engine size, increasing the number of cylinders will
    usually increase power output. (Unless it's a Hard^Hley in which case it
    had no power to start with so "zero x anything" will still be zero).

    James
    ZZR250==>ZX9R
     
    Centurion, Mar 13, 2005
    #29
  10. It's all just torque then!
     
    Pisshead Pete, Mar 14, 2005
    #30

  11. *PLANK*

    Postman Pat
     
    Pat Heslewood, Mar 14, 2005
    #31
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