I have a very nice WD type dynamo for sale suitable for any Magdyno equipped military bike.
It is fully overhauled mechanically, electrically and cosmetically..ready to fit. Price is £175 plus shipping...Ian
Hi Rik, They can be set up to run either way by swapping the brush wires round...Ian
Ian, that's not entirely true, the fiber brush holder plate is different for the 2 directions of drive, and can be changed accordingly, to just switch the wires you lose something somewhere, or the brushes wear faster, cannot remember anymore
Hi Alex, It may be that the brush holders are slightly off center to position the brush in a 'trailing' position relative to direction of rotation and the centerline of the armature. I would have to check that out though..I'll let you know the answer...Having rewired them to run 'opposite' on numerous occassions however, I can't say I have noted any rapid brush wear and output is not affected. For those concerned about these things this is a BSA dynamo and is made (theoretically) for fitment to any machine that runs the dynamo in that direction.(anti clockwise viewed from the drive end).Ian