Yes you are onto it Frits, all reluctor type triggers have a rpm dependent change in the actual " firing " point of the output ,be that a leading or trailing edge of the waveform.
ECUs compensate for this as the design of this type of trigger is pretty much universal, and they all react very similarly.
So an electronic waveform generator must be programmed to use the same rpm dependent change in the wave form crossing zero, or the results are erroneous.
I have a test bench that is simply a vacuum cleaner motor driving a secondary shaft thru a cog belt.
The variable speed is a lamp rheostat on the secondary winding of the motor - with a dpdp switch that swaps the winding's around for directional control..
And as long as you use a super cheap " inline " strobe there are no timing delays in the flash.
Ive got a thing thats unique and new.To prove it I'll have the last laugh on you.Cause instead of one head I got two.And you know two heads are better than one.
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