I have a 1982 R100RT, running a 400x18 Avon Roadrider in back. Bike has the stock 32/11 rear end, and 1.078 speedometer. I know the Motometer speedometers are not the pinnacle of accuracy, but I typically show about 4100 RPM at about 70 mph in fifth. This morning it was showing 5500 RPM at 70, and the tach needle was not being shaky. This afternoon the ratios were back to normal.
What is going on here?
What is going on here?
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