Ignition timing

Had to redo my ign timing this a.m., when I found that the new points fitted to my SRM recon magneto had been fitted at the absolute limit of adjustment, and there was no way of getting a bigger gap than 8 thou without trying to modify the mounting for the fixed point. (it swivels on the centre bolt fixing and is held fast by a small screw in a slotted section of the plate below the point). Lousy item, which I didn't really want anyway, but I was told that the backplate and points I supplied couldn't deliver the same timing on each cylinder. Strange, I thought, if the cam ring was serviceable (which it was) and the bearings were new (which they were by then), but OK, you know more than me, replace as necessary etc. Anyway - replaced the thing this morning with an old brass Lucas one off another spare mag, put a new set of points on it, and things have been transformed. Better in every way, including they're adjustable!.
But the thing is - the mag pinion went on without force or any slip / risk to the position of the cb unit at the other end, which didn't even need holding during proceedings.
Good to see while I was in there that the mods I had to make to the toothed belt dynamo drive conversion (steel taper and centre for cheesy alloy pulley whose taper self-destructed in a matter of a few hundred miles) were holding up well and that the belt had not stretched in several thousand miles. All's well in the end - but that's 2 SRM things I haven't been that chuffed with, and 3 if you count the supply of allen screws instead of longer studs for attaching the alloy sump plate with drain plug, which might just be me being faddish about screws into aluminium. Silly little things which I will mention next time I'm on the phone to them, but they've absorbed some time fixing/improving stuff that shouldn't really have needed it.

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