21-08-2018, 07:45 AM
I suggest the real problem with 6v is clapped out parts and amateur tinkering. I had my dynamo professionally overhauled by Wynalls longer ago than I can remember and it hasn't missed a beat since. I have just bought a new battery from Shield which has such a large capacity you scarcely need a dynamo anyway. The same company provides a modern, off the shelf trickle charger for same which will keep it in good shape. More expensive than 12v battery perhaps, but hardly enough to justify converting, in my humble opinion.