Honda CBR 250 Forum banner

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,
1 - 1 of 11 Posts
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


See less See more
  • Like
Reactions: 1
1 - 1 of 11 Posts
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.