The sun was shining...

Discussion in 'UK Motorcycles' started by Gyp, Sep 28, 2008.

  1. Gyp

    Gyp Guest

    .... So all right thinking middle-aged men drag a SOBoxer out of the
    garage and tinker.

    http://picasaweb.google.com/Thegits/Boxer#5251184872125098754

    All was going well until I got to the starting up bit. Long story short,
    the battery is totally dead so I jump started it from the P5. The boxer
    was rather reluctant to turn over.

    I removed the plugs and tried again and the engine turned over
    beautifully. Plugs back in, not interested. The jump leads are pretty
    decent, and I'm surprised that a battery that happily spins a 3.5 litre
    V8 should struggle with a 0.65 litre flat 2.

    What I don't know is what the effect would be of having a totally
    shagged battery in circuit. Any thoughts if I'd be likely to get a
    better result if I took the battery out and connected the leads directly
    to the wiring loom? I could just go buy another battery just to try it,
    but as they are somewhat pricey I'd rather not until I know it's going
    to start and run nicely
     
    Gyp, Sep 28, 2008
    #1
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  2. Gyp

    Timo Geusch Guest

    I'd give disconnecting the battery in the bike a try - depending on how
    flat it is, it probably tries to charge itself from the P5 battery, not
    leaving much current for the starter motor.
     
    Timo Geusch, Sep 29, 2008
    #2
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  3. Gyp

    Pete Fisher Guest

    Doesn't stop me starting up SWMBO's CB250 occasionally with jump leads,
    or even the Tart when it had an undeniably utterly borked battery.

    I suspect an earthing or main feed lead problem. Are you connecting the
    earth jump lead to the battery terminal or direct to the frame ?

    You could try just disconnecting the battery and hooking up your jump
    leads direct to the battery connections to confirm their integrity.

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    Pete Fisher, Sep 29, 2008
    #3
  4. Gyp

    Gyp Guest

    I was connecting to the battery, should have gone to the frame directly
    I guess.
    It's a plan. Next time it's sunny, that's what I'll do
     
    Gyp, Sep 29, 2008
    #4
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