MotoV said:
I have the 2 magnet set up for a DMC.
Hi MotoV
Many DMC ignitions work with the original Laverda VR (variable reluctance) pickups. Permanent magnets are built into the pickups, not the rotor. If you poke at a VR pickup with a screwdriver, you can feel the magnetism. The rotor has ferrous lobes that interact with the magnetic field as it passes the pickup, causing a voltage to be induced into the pickup coil. Because the VR pickups contain both a permanent magnet and a coil, they're quite big and clunky in comparison with Hall effect pickups, which are only a small semiconductors that looks like a small transistor. With Hall pickups, the magnet is in the rotor.
You can see in the photos of Red's pickup boards that the Hall triggers are very small, which frees up space for Red's up-rated alternator, another great leap forward in Laverda upgrades. By the way, I'm not on any commission from Red to promote his products, just telling it as it is. Clever design and well made.
As well as VRs having a different output profile to Hall sensors, the connections are different too. VR pickups have two wires, + and -. Hall triggers have 3, a power supply, earth, and signal output. So they're not easily interchangeable. You need to confirm that the ignition unit you're using is compatible with the pickups.
If you install a Hall pickup board, it probably won't work with your DMC. For a start, you need a +5V power supply to the pickups, which a DMC doesn't have.
Cam
