Re: Ignition Timing

Posted by hendred on May 29, 2020; 11:43am
URL: http://silk-motorcycles.221.s1.nabble.com/Ignition-Timing-tp5001920p5001923.html

Curiosity got the better of me.  Took the alternator cover off again, made up a small timing disc and my advance is 27 degrees btdc.  Took some measurements with digital calipers and using trigonometry got 29 degrees (at small angles a small error in measurement creates a big error) so the 27 degrees advance at 5mm piston movement agrees with the Torqsoft program calculation.  Gives some confidence in the previously calculated advance for 7.62mm piston movement.

The studs holding on the alternator cover and stator make using a large timing disc impractical without replacing with shorter ones - I've had the alternator cover off once in 12 years before this week - six times in a week is more than enough!

Hope this answers your question.