baz
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- May 26, 2010
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Me too but don't tell anyone!!!!That's exactly what I do. So unscientific and sunny.
Me too but don't tell anyone!!!!That's exactly what I do. So unscientific and sunny.
I know it is totally irrelevant to the original post and this timing disc but anyway my fixation on checking timing came from timing twin magnetos. Specifically the difference between cylinders using a K2F or even Jo Hunt MAG.
I ruined two sets of pistons before it dawned on my inexperienced self that because of cam errors and a misaligned shaft the timing differed between cylinders by more than 10 crankshaft degrees.
Melted the top of two pistons trying to cure it with carb main jets.
Very very silly
Yes. Electronic ignition has eliminated this problem but any time you use a twin cylinder magneto of any make it is essential to checked the timing is the same both sides. Up to say 3 degrees you can split the difference but much more than that you risk melting a piston.Interesring!
I said earlier that Dave Degens always said that being super precise was irrelevant (within a few degrees).
However, he was a stickler for ensuring the timing between each piston was cock on.
I guess we take it for granted these days as wasted spark EI can’t be anything other than perfectly matched, but it wasn’t always the case!