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Rpm @ 60 mph

4091 Views 10 Replies 9 Participants Last post by  CBRockers
Has anyone used a GPS system to "accurately" measure RPM @ 60 mph (with stock sprockets?)
Thanks in advance,
Rev-
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Here is my graph based on calculation and actual rather than indicated speed. I have verified this with gps on my European spec machine ( speedo overreads 10%).

I haven't accounted for rev counter inaccuracy ( I suspect it may be out by 2-3 hundred rpm more than true).

There is no absolute value because tyre dimensions are variable according to make, wear, and temperature.

Regards Roadster

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