Wiring my Old Royal Enfield Bullet

Discussion in 'General Electronics Chat' started by Thirumoorthi Chellappan, Jun 10, 2016.

  1. Thirumoorthi Chellappan

    Thread Starter New Member

    Jun 10, 2016
    I have old royal enfield bullet fitted with diesel engine from Greaves cotton. I have two alternators one from Diesel egine itself and other from Royal enfield.
    Diesel Egine Alternator:
    The problem is am getting 15 A/C volts at idle RPM from diesel engine alternator and climbs to 40 A/C volt. I'm getting only two outputs from this alternator
    Royal Enfield Alternator:
    Similarly Royal enfiled alternator has three outputs and two outputs read 9 A/C volt each against ground.
    I'm using two diodes to charge my battery and connected my head light directly to that diesel engine alternator output.
    Right now i need to do fine electrical wiring, help me please.
  2. Marley


    Apr 4, 2016
    The alternator that has 3 outputs is probably wound as 3-phase. You need a 3-phase rectifier with 6 diodes. Is the rotor permanent magnet or is there a field winding with sliprings?
    To reliably charge a battery you really need a voltage regulator. These usually work by regulating the field winding.
    Most car alternators have the rectifier and a regulator built-in.