Hello,

an adjustable timing light is probably very handy, but at least conceptually, it seems easy to mark a few interesting angles on the pulleys.

If you take a measuring tape (ikea has the free paper measuring tapes

) and measure the circumference of one of the pulleys, you just have to mark a notch at an "arc" proportional to the angle.

Example, say the small pulley has a measured circumference of 565mm (I am *assuming* a diameter of 180mm).

If you want to mark 5 degrees, measure a distance along the circumference (an arc) of length (5/360) times 565mm= 565/72 = 7.8 mm

Just as a note, if you use the largest pulley you get more accurate results, but the timing angle is probably rough anyway.

Hope this makes sense to everyone,

Claudio

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