Lately I’ve been paying particular attention to my max speed on my Coker. I
set the timer on my wristwatch to one minute and then count the revolutions.
This seems to be a reasonably accurate way of measuring a one minute
averaged top speed.
I’ve been somewhat discouraged. I had previously believed (based on little
more that a “gut” feeling) that I had approached 20mph occasionally. As it
turns out for me my top one minute cadence is about 140. On a Coker that
translates to just under 15mph. Can anyone who has paid attention to these
things suggest if it is likely that during the course of one minute of near
maximum pedalling that my cadence would vary significantly? I don’t feel
like it does. But I cannot say for sure.
I recently swapped cranks on the Coker to ~124mm cranks. These allow me to
use a smoother, more circular pedal stroke. Unfortunately they haven’t
yielded the speed increases that I had hoped for. I believe that this is
due, in part, to a reduction in my ability to control the Coker. With time
I expect (hope?) to routinely achieve cadences above 150 (16mph).
I think that part of my previous overestimation of my speed is based on
reports of max speed here in the newsgroup. I also believe that many
reports of >15mph are incorrect. I believe that this inaccuracy is a
result of a rider using a cycle computer’s max speed function.
I do belive that 20+mph is possible, just not as common as I had initially
believed. It seemed that every Coker owner was reporting 20+mph. I myself
fell prey to this misinformation and posted “guestimated” speeds. Or maybe
I’m just the “slow guy”. I guess I’ll find out at UNICON (if I can figure
out how to get my Coker there).