# Training: Coker 15 mile and 25km time trials - 15.32 MPH (24.66 km/h)

This training time trials ride follows a new out and in loop repeated
three times for a total distance of 15.70 miles. An average speed of
15.3 MPH on the computer was maintained throughout the final loop, so
times could be reasonably computed for the 15 mile and 25 km distances
from the final average speed of 15.32 MPH over the 15.70 miles covered
in 1:01:30. The ride was completed on 10 September 2003. The table of
of the distances, times, average & maximum speeds are:

Date Distance Time Ave Speed Max Speed Comments
20030910 15 miles 00:58:45 15.32 MPH 17.4 MPH Computed time
20030910 25 km 01:00:49 24.66 km/h 28.0 km/h Computed time
20030910 25.28 km 01:01:30 24.66 km/h 28.0 km/h 15.70 miles

My computer reads out distances in miles and I converted between miles
and kilometers via the commonly used (slightly imprecise) conversions:

1 mile = 1.61 km
1 km = 0.62 miles

My cycle computer has a 2769mm circumference programmed and the Coker
has slight wear in two spots (not ready for the first tire rotation).

I used a Deluxe Coker, 125mm cranks, GB handle, and a completely flat
Miyata Air Seat. I was still surprised how comfortable the ride was.

My Miyata Air Seat had developed a fast (one minute) air leak and rather
than repair it, I simply raised the seat an inch to account for the
missing inch of air in my seat.

My previous best time trial training ride was a 15.59 mile ride in
1:01:46 on 5 Sept. for an average speed of 15.14 MPH (24.38 km/h).

Sincerely,

Ken Fuchs <kfuchs@winternet.com>

Re: Training: Coker 15 mile and 25km time trials - 15.32 MPH (24.66 km/h)

You wildman! Way to go. That is fast. I assume the terrain is flat…could
you go faster with 110mm cranks?

—Nathan

You should try that in a Velodrome.

Something to consider:
You rode approximately half the bicycle hour record and you ride half the the number of wheels.

Re: Training: Coker 15 mile and 25km time trials - 15.32 MPH (24.66 km/h)

Nathan Hoover wrote:

>You wildman! Way to go. That is fast. I assume the terrain is flat…could
>you go faster with 110mm cranks?

Thank you, Nathan!

Yes, the triple out and back route I’m using is relatively flat. It has
a few very slight (noticeable) slopes up and down.

I haven’t tried 110 mm cranks, but that probably would allow
significantly faster speeds on this route. However, the 110 mm cranks
would make at least one local hill impossible or at least extremely
difficult to climb.

Sincerely,

Ken Fuchs <kfuchs@winternet.com>

Re: Training: Coker 15 mile and 25km time trials - 15.32 MPH (24.66 km/h)

GizmoDuck <GizmoDuck.tm2ku@timelimit.unicyclist.com> wrote:

>You should try that in a Velodrome.

Very good suggestion!

>Something to consider:
>You rode approximately half the bicycle hour record and you ride half
>the the number of wheels.

What is current distance of the bicycle hour record?

Sincerely,

Ken Fuchs <kfuchs@winternet.com>