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electrical woes?

Discussion in 'Norton Commando Motorcycles (Classic)' started by mark375850, Aug 16, 2019.

  1. mark375850

    mark375850

    Joined:
    Nov 2, 2011
    Have just fitted a pazon surefire to a mates bike before pazon fitted ampmeter would flicker when ignition turned on now it will not,take plugs out they spark when grounded,timing has been reset checked it more than once convinced its correct carbs will flood when primmed and plenty of fuel in tank plenty of compression .
    Will splugs still spark if I have a dead short? could something like capacitor cause this? bike did run before new ignition put in but stopped running before old boyer taken out found two wires to pickups bare as they go in back of timming cover previous boyer 20 years old insulation on wires very brittle,loom in bike has been replaced in previous year and has run well until now.will not even fire when kicked over.
    any ideas?
     
  2. mark375850

    mark375850

    Joined:
    Nov 2, 2011
    should have added have checked wiring to pazon over and over sure thats wired properly also
     
  3. L.A.B.

    L.A.B. Moderator VIP MEMBER

    Joined:
    Nov 20, 2004
    Which particular make/model/year "bike" are we talking about? Assuming it's an early Commando (as it has an ammeter) but perhaps not?

    As I understand it, the Sure-Fire doesn't 'wake up' until it receives (1 or 2) impulses from the pickup which could be why the ammeter doesn't flicker when the ignition is turned on, but probably should flicker when the kickstart is used.

    Then the Pazon 'box' would appear to be wired correctly unless the pickup wires happened to be reversed which would result in the ignition timing being way off.

    If there was a dead short the main fuse should blow immediately, assuming there is one? If not, part of the wiring would have burnt out.

    If you mean 2MC capacitor (assuming it has one) then a faulty capacitor would be more likely to flatten the battery or prevent it from fully charging but you already know the Pazon is sparking which suggests the problem is not the Pazon but something else (wrong ignition timing, etc.?). If in doubt, disconnect the 2MC earth/ground wire (if fitted).
     
  4. kommando

    kommando

    Joined:
    May 7, 2005
    The surefire has a sleep mode, this is to protect the box and the coils from overheating as the bike is sat with ignition on and engine not running. All the EI boxes run a sleep mode for the same reason and need a trigger pulse to wake up, but the surefire is more drastic, not only does it need 2 pulses but they must be close enough to tell the box the engine is doing 200rpm or more. Too far apart and even 2 pulses will not wake it up.

    So you get sparks when the plugs are out and earthed but if you do not give the bike a good kick with the plugs in then the Surefire does not wake up and no spark, bump start it down a hill and the extra speed the crank gets from the back wheel and it starts.

    Try a bump start, if it starts on a bump but not on a kick then go back to Pazon and ask for the special version that wakes up quicker. If a bump start does not work then something else is wrong, but the pazon issue could still be an issue once you fix the other issue.

    The pazon sleep issue is worst on big singles with light flywheels, twins having issues are much rarer.
     
  5. johnm

    johnm VIP MEMBER

    Joined:
    Feb 26, 2008
    Why not just call the guy at Pazon? Your in NZ and he is normally available on the phone and very willing to talk things through.
     
    jbruney likes this.
  6. gortnipper

    gortnipper VIP MEMBER

    Joined:
    Nov 11, 2013
    Probably because it was 20.15 when he posted and its Saturday now and he is hoping for a weekend ride? ;)
     
  7. johnm

    johnm VIP MEMBER

    Joined:
    Feb 26, 2008
    Nah! The whole country is having a huge rainstorm!!!!
     
  8. gortnipper

    gortnipper VIP MEMBER

    Joined:
    Nov 11, 2013
    Still BBQ dinner weather in AKL. Lol

    But today was pretty rideable.
     

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