Hold on....a circumference is measured in degrees. 3" or 30", 10 degrees is gonna be 10 degrees on a DB timing light. Now how they determine the pulse width of that offset without knowing the diameter of the balancer is...? @KitCarlson It must do some mean time between 2 pulses (RPM) and then does a division of that time by 720 to get the timing width of 1 degree and then uses that as the basis of the timing delay or offset once you turn the dial back wheel. So -10 would measure 700 degrees and then start the 720 clock again. Move the dial to -11 and it will count 698 degrees and start the 720 clock again. Of course this is all taking place at megahertz speed (millions of calculations per second) so its transparent But to say that a dial back is calibrated to a specific balancer diameter is hard to accept. Some timing marks are on 12" flywheels instead of 7.25" balancers. Kit, you got any theories on this?
