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Bsa help

Discussion in 'Motorcycle Tech Talk' started by 86a, Sep 5, 2011.

  1. 86a

    86a Member

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    Gents
    I just finished rebuilding my first brit bike and think i goofed somewhere,because i forgot to test the electrical output of the rotor. When i try to start the bike i get no spark, i,ve tested all the wiring,capasitor,coils,rectifier,all is ok. Does anyone know how to test the rotor and sator without taking the whole thing apart?
    Tx
    86a, Sep 5, 2011
    #1
  3. cowboy

    cowboy Moderator Staff Member

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    What year .& size / model bike ?
    cowboy, Sep 5, 2011
    #2
  4. Lucifer

    Lucifer Well-Known Member

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    A general test fo a stator would be to take an ohm meter,put one lead on 1 wire or socket of the 2 wire plug or socket and the other to the engine case...R should be infinite...repeat for other wire or socket,should be infinite....if you get a reading ,you have a short,next put the leads from the ohm meter on both wires from the stator,you should get a low R reading(check your manual for the R value) if you get too high a reading or infinite(no continuity) stator is no good,you have a broken wire in it....hope this helps...
    Is this similar to yours...

    http://www.britcycle.com/Manuals/338_Classic_Twin_BSA_Norton_Inst.pdf
    Lucifer, Sep 6, 2011
    #3
  5. 86a

    86a Member

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    Cowboy
    The bike is a 68 bsa a65 654cc with a Lucas rotor,points ignition
    86a, Sep 6, 2011
    #4
  6. 86a

    86a Member

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    looks like the same one to me
    I will try out your suggestion this wknd
    I,m keeping my fingers crossed
    Tx
    86a, Sep 6, 2011
    #5
  7. cowboy

    cowboy Moderator Staff Member

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    I ask the year cause BSA had a positive ground bike for a few years so you have to be careful so you don't short it out
    cowboy, Sep 6, 2011
    #6
  8. Lucifer

    Lucifer Well-Known Member

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    :D Did you hear the old saying" The only thing Lucas made that didn't suck was a vacuum cleaner":roflmao:
    Lucifer, Sep 7, 2011
    #7
  9. cowboy

    cowboy Moderator Staff Member

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    Lmao lmao :)
    cowboy, Sep 7, 2011
    #8
  10. 86a

    86a Member

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    they didnt call Lucas the Prince of Darkness for nothing
    86a, Sep 7, 2011
    #9
  11. Red Rider

    Red Rider Well-Known Member

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    Had a Lucas ignition system in my TR-7 many years ago. Spent the night in the median on HWY 101 near the Army Street exit in San Fran 'cuz that POS. Went back to bikes thereafter!
    Red Rider, Sep 7, 2011
    #10

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