Quote:
Originally Posted by alvaro84
I think it's easy to check: just coast a bit with the clutch. If it's calculated from the engine revs (which I wouldn't think) then the measured speed should drop immediately.
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Why would they ever calculate speed by engine revs?
Bike speedometers are either driven or sensored off the front wheel or the countershaft. The Ninja 300 is sensed off the countershaft (front sprocket shaft), as Old Mechanic already knows, as he clearly knows his way around a motorcycle.
As far as calibrating the speedo goes, it might be tricky. If you are good at electronics, coming up with an adjustable frequency modifying chip to modify the pickup sensor signal would be the ticket.