ES2 half time pinion

Previously dave_graham1 wrote:

Each keyway is in a slightly different position from the teeth so the valve timing can be adjusted more accurately that 1 tooth of the cam wheels.

I see. I pressume then, that the keyway used and the timing marks as set by Norton, are the optimum timing or can this even be a bit hit and miss. John

Previously dave_graham1 wrote:

I haven't got a later single but on my WD16H, 46 Model 18 and 49 ES2, there are no timing marks on the cams. I have just picked out the best of 6 cams for a 46 engine, none of which have any timing marks. I can only assume that any of these 40's engines with marks have been applied by an owner. I usually mark them with red paint.

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Thanks for info Dave. Must make one of those engine cradles for winter when I have the engine out and play with a timing disc and the three keyways. John