Hi Alan
A tachometer allows one to measure performance and effiency when changing parts ie rollers gearing etc its also allows one to stay in the powerband of the engine with out overreving
take care and ride safely dear friend
Yours hank
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"4wheels move the body 2 wheels move the soul"
Duty, Honor, Country. Those three hallowed words reverently dictate what you ought to be, what you can be, what you will be.
Douglas MacArthur
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