I've got a GSXR front end with one of the hall effect sensors running my speedo from four magnets in the brake rotors.
I'm sure my speedo is reading 3/4 of the speed I'm actually doing, e.g. 40 reads as 30, 80 reads as 60
With out going through a speed camera at what i think is 30 and waiting for a flash, how can i test the speedo is giving me the right read out?
First i thought i was missing a magnet or one of them had stopped being magnetic but i check and they're all there and working
I used to know what revs to speed i was doing before I down toothed the rear sprocket, help before its 3 points and £60 to late
