It lives

Discussion in 'Classic Motorbikes' started by crn, Sep 27, 2008.

  1. crn

    crn Guest

    The beast [1] lives (well sort of).
    New battery, clean carb, fresh fuel, clean points.
    Kick for maybe 5 minutes and it finally takes.

    hmmmmm - check some voltages.
    6.4V at the battery, only 5 at the coil. Follow the wiring, every
    damn connector is corroded enough to loose a fraction of a volt.
    Hotwire the coil to the battery - yaaaay.

    Looks like I have some serious electrical fettling to do, this could
    mean some new switches and replacing some connectors.

    Tea break time.
    Try again, two kicks and the bloody kickstart snaps off. GRRRRRR.
    Evil contraption ......

    [1] Bantam B14/4 Sport cost me UKP 666 on fleabay.
     
    crn, Sep 27, 2008
    #1
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  2. Oh dear.

    LOL.
    --
    Dave
    GS850x2 XS650 SE6a

    "It's a moron working with power tools.
    How much more suspenseful can you get?"
    - House
     
    Grimly Curmudgeon, Sep 27, 2008
    #2
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  3. With a figure like that, surely you expected some devilish behaviour?
     
    The Older Gentleman, Sep 27, 2008
    #3
  4. crn

    crn Guest

    Indeed, that is why it is called The Beast.
    But it will be beaten into submission soon.
     
    crn, Sep 27, 2008
    #4
  5. crn

    Mark Guest

    Starting is much improved if you convert it to 12volts, much brighter
    headlamp as well.
    Also helps if you fit a new condenser, not a NOS dried up Wipac original.
    I use a Lucas 061105 it's a bit larger but still easily fitted.



    -
     
    Mark, Sep 28, 2008
    #5
  6. Ah. The D14/4S.
    I had one of those - cost me all of £25.
    Even bunged a sidecar on it at one stage - then played with fuel injection,
    which ended up with quite a few con rod shaped holes in various crank cases.

    12 volt. It's the only way.
    The current alternator will be more than adequate.
    Either a Zenor diode and a block rectifier, or these days get one of the
    wonderful jobbies of Paul Goff
    http://www.norbsa02.freeuk.com/goffyelectrex.htm

    Like I said - 12 volt it.

    ......... but loveable with it.
     
    ^..^ Lone Wolf, Sep 29, 2008
    #6
  7. crn

    crn Guest

    12v would be nice but it is not going to fix the corroded connectors and
    dodgy switchery that I have been fettling today. A few hours of snipping
    out and replacing corroded connectors has helped, a new ignition switch,
    points and condenser are on order. Having just spent money on a 6v
    battery the 12v conversion can wait. I might blow a few quid on a Pazon
    coil though.

    Any bike that has been stored for 20 years is going to take a bit of
    fettling to get right, but Bantams are simple enough. Looks like a new
    chain would also be a good idea.
     
    crn, Sep 29, 2008
    #7
  8. I'd forgotten about him, ta.
    Reminds me of when I made my own reg/rec for a GS - worked well, with a
    diode net and a big fuckoff Zener all on a decent heatsink.
    --
    Dave
    GS850x2 XS650 SE6a

    "It's a moron working with power tools.
    How much more suspenseful can you get?"
    - House
     
    Grimly Curmudgeon, Sep 29, 2008
    #8
  9. crn

    boots Guest

    I gave a mate a hand sorting out the wiring[1] on his sprogs SACHS 125
    over the weekend. Lastime I'd looked he'd had charging and battery
    problems and I'd suggested the reg. Turned out the OEM unit was as
    rare as a rare thing at £100 or so - so he got one made which seems to
    be doing the trick.

    [1] Bodged with a link wire, hopefully it will last.
     
    boots, Sep 29, 2008
    #9
  10. crn

    Mark Guest

    I always bin the original wiring loom and make my own,
    far too many unnecessary connections with 6v and coil switching to achieve
    battery (mostly Not) charging.
    As others have said 12Volt really is the way to go with a SOBB.
    Even the Prince of Darkness had decided in the late 1960s that this was a
    good idea.



    -
     
    Mark, Sep 29, 2008
    #10
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