This year I've bought two Scott Bonnar reel mowers on ebay, a Supercut and a Model 43, both with 155cc Scott Bonnar engines and both from the early 1960s. I need a couple of fuctioning Magister Capacitator Discharge Units for these mowers. I tried three old units and none were any good. A friend has the technical background and interest to attempt to build some units. I've attached a letter which adds a little to the great information obtained by a Forum member from Motor Cycle 1963. I've also attached photos of the mowers. I'll let you know how we go with this. Regards Grant