Thought 1: If you know someone with a GN250 put a scope on it to see what input signal the stock ignition was designed to work with, then plug in a Gonzo and compare. At present it seems that the XS TCI stock sensor can fool certain Gonzos, but the Gonzo was probably designed to accept a reluctor signal where the +ve and -ve peaks are separated by a time related to the angular length of the raise metal sensor strip on the PMA rotor which then defines the pulse length. The length of the raised metal strip does not increase the signal strength. The strength is related to the change in flux. The flux only changes at the start of the raised metal strip and at the end of this strip. The length of the raised metal strip defines the separation between the +ve and -ve peaks which on the stock GN250 ignition defines the pulse length. For all I know the pulse length on the GN250 may be defining "dwell time" for the coil.
Thought 2: If the GN250's raised metal sensor strip on the PMA rotor maps out a similar number of degrees as that between the two coils on the XS's stock sensor then you may be able to trick the Gonzo by putting a diode on each coil to obtain a +ve peak from the first coil and a -ve peak from the second. Both diodes will then get tied together at the Gonzo input. The Gonzo will then see this as a reluctor style signal and generate a pulse with the correct length. I realise this looks a bit like a short circuit because the signal from one coil feeds the other coil plus the Gonzo input. But just maybe ...
Thought 2: If the GN250's raised metal sensor strip on the PMA rotor maps out a similar number of degrees as that between the two coils on the XS's stock sensor then you may be able to trick the Gonzo by putting a diode on each coil to obtain a +ve peak from the first coil and a -ve peak from the second. Both diodes will then get tied together at the Gonzo input. The Gonzo will then see this as a reluctor style signal and generate a pulse with the correct length. I realise this looks a bit like a short circuit because the signal from one coil feeds the other coil plus the Gonzo input. But just maybe ...
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