Wiring my Old Royal Enfield Bullet

Thread Starter

Thirumoorthi Chellappan

Joined Jun 10, 2016
1
Hi
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.
 

Marley

Joined Apr 4, 2016
502
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.
 
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