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sidevalve5Wish to correct and clarify what I posted yesterday about changing a magneto flywheel. I said it was just the cam lobe and magnet position that was important. Upon reflection, this was misleading, there are other factors too. Including: coil position on the armature plate, magnet to coil air gap and points cam feet position. Everything has to operate in complete synchrony for a good spark to occur at the correct time for the engine.
If the part number is the same on different Villiers model’s flywheel, then they should be interchangeable. But if the part number is not the same, then there is a risk it will not work, or even fit. Of course none of this will matter if David is going to use the Kettering ignition system. As long as the points open at the correct time for the engine. At a push, could even get away with not using the flywheel rim. Modern two stroke motorcycles do not have them. But the engine will sound like a motocrosser when in work and is more likely to stall.
Am going to see if my potentiometer is going to work at the weekend. Have a 14.4v drill battery that is reading 18v. If its successful, will post it, because it will be an easy and cheap way of powering a total loss battery system. Most folks have a battery drill and charger.
