Timing strobe light

I always tried to never move the ignition timing on my motor. I knew where the Boyer triggered, and I used to find TDC by the broken spark plug / soap bubble method. Because the fuel type, comp ratio, ignition timing all interact with the jetting, with me - the adjustment is always in the jetting. One of my friends gets the jetting right - then adjusts the timing while the bike on the dyno. I think there is a problem tuning various fuels for performance. If the mixture is not lean enough at a particular timing, a lot of fuel probably does not give-up its energy. In Australia, many of us used methanol fuel. In tuning for speed, Phil Irving says 'if methanol is run rich, it still gives good power'. That can be read in about three ways. It might mean, methanol gives enough power if run rich. It might mean petrol does not still give good power, if run rich. Or it might mean jetting errors are not very important. All of those meanings are incorrect. When methanol is run rich, you can smell the acidic exhaust. When using petrol, an exhaust gas tester might be useful. When jetting, it is normal to start rich, then lean off. Jets are expensive. I was surprised when my Seeley 850 became fast enough. I use the leanest Mikuni needles for the MK2 Amal carb, and when the clips are in the top notches of the needles, the motor develops a slight miss. So I have full range of adjustment with the leanest needles
 
I always tried to never move the ignition timing on my motor. I knew where the Boyer triggered, and I used to find TDC by the broken spark plug / soap bubble method. Because the fuel type, comp ratio, ignition timing all interact with the jetting, with me - the adjustment is always in the jetting. One of my friends gets the jetting right - then adjusts the timing while the bike on the dyno. I think there is a problem tuning various fuels for performance. If the mixture is not lean enough at a particular timing, a lot of fuel probably does not give-up its energy. In Australia, many of us used methanol fuel. In tuning for speed, Phil Irving says 'if methanol is run rich, it still gives good power'. That can be read in about three ways. It might mean, methanol gives enough power if run rich. It might mean petrol does not still give good power, if run rich. Or it might mean jetting errors are not very important. All of those meanings are incorrect. When methanol is run rich, you can smell the acidic exhaust. When using petrol, an exhaust gas tester might be useful. When jetting, it is normal to start rich, then lean off. Jets are expensive. I was surprised when my Seeley 850 became fast enough. I use the leanest Mikuni needles for the MK2 Amal carb, and when the clips are in the top notches of the needles, the motor develops a slight miss. So I have full range of adjustment with the leanest needles
Why on earth would you waste your time typing out the same old crap instead of answering the question???????
 
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