Motorcycle Questions? Ask a Mechanic.
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Hello, besides bulbs you will need
3. Ignition coil
You'll have to check electric motor shops to see if one can rewind the stator as an off the shelf solution does not exist. There are universal regulator kits on ebay that can be adapted as well as coils. It's going to be a bit of an undertaking as you'll be piecing it together so to speak since no one makes a kit to do this.
Good morning, I think we just have a differene in terms due to our geographical location. What I call a stator is the AC generator.
The stator produces AC voltage that is changed to DC voltage by the rectifier/regulator assembly.
The ignition coil should be operating on DC voltage.
usually AC generators for 6 v dc do not produce enough AC voltage, you could try the 12v reegulator and see how it does but usually they need more winding on the ac generator to produce the voltage.
Let me know how I may help more
Hi, I’m Louie. Sorry you had to wait awhile but I’ll do my best to help.Initially , please click HERE. This is the diagram I have for the Honda XL250. Should your diagram be different, please post back with your copy. Click HERE.
From there we can work on the possible conversion with a common reference.
The electrical system based on this diagram is composed of the three (3) sub-systems:
While the latter 2; headlight and running can be lumped together and can be converted to 12V, the ignition would be relatively difficult thus challenging.
Please note that the contact breaker (points) is used to physically switch on/off power to the ignition coil is mechanical. This switching action results to the ignition coil to induce a high voltage to its secondary thus producing spark.
While theoretically possible to convert the ignition system to 12V/CDI, it would very challenging primarily due to parts availability particularly the magneto/rotor or more particularly the metal tab attached to it, the pulser (pickup) coil and its mounting plate as well as exciter coil to charge the CDI's capacitor. Equally difficult to configure for the spark timing.
On the otherhand, it would be doable to convert the battery, headlight, all other light and running system to 12V.
Please post back should you wish to proceed and/or should additional information be needed.
Including the ignition?
Or just the lights and other electrical + battery?
Based on experience; just the lights and other electrical + battery. Modifying the ignition was painfully doable BUT, configuring the spark timing was a nightmare.
To have a common reference, please post back with clear closeup pictures of the alternator coils. Click HERE.
Yes please; when able.
These do not appear to be the alternator coils.
The alternator / magneto coils would look something like the image shown HERE.
Please click HERE. The pictures would provide insight.
Yes please; Friday or when able.
Appreciate the pictures.
Please identify the different wires (colors). These would be:
Also, locate these parts:
The basic idea would be:
Also consider LED types of bulbs if of interest.
As posted above; "...possible to convert the ignition system to 12V/CDI, it would very challenging primarily due to parts availability particularly the magneto/rotor or more particularly the metal tab attached to it, the pulser (pickup) coil and its mounting plate as well as exciter coil to charge the CDI's capacitor. Equally difficult to configure for the spark timing...."
Thus the timing originally was based on a contact point opening. On the other hand, a CDI would be based on a pulse from the pickup coil. Additionally, a CDI system would need another coil whose function is to charge the built-in capacitor in the CDI.
On cars that still use breaker/contact points, there are products such as from Accel or Mallory or MSD that can add a transistorized ignition system. However, it is not CDI. Something like the operations as illustrated HERE. The challenge with this approach is getting a small ignition kit that would work with a single cylinder engine.
A ideal rectifier/regulator that can used with 12V rewound charging coil and headlight coil would be from a Chinese ATV/scooter that has 4-wire/pin connector. With most versions, their wire colors would be: