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From: Frank Krygowski <frkrygow@sbcglobal.net>
Newsgroups: rec.bicycles.tech
Subject: Re: Average speeds
Date: Sat, 17 May 2025 14:55:10 -0400
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On 5/16/2025 9:40 PM, John B. wrote:
>
> Youse guys just like to spend money. I had a mile recording  device
> that recorded miles by counting wheel rotations (a known distance). So
> time I got  home less time I started divided into distance travelled =
> average speed  :-)
FWIW: John's method is what I used for about 15 years, a 
"tick-tick-tick" mechanical rotation counting cyclometer - with the 
added trick that the number of wheel rotations in five seconds is very 
close to the speed in miles per hour.

I think it was 1986 that I finally got an electronic cyclometer that 
displayed speed. It acted as a primitive performance motivator - as in 
"I can't believe I'm not going any faster than that!!" It caused me to 
push myself a bit more. Overall, I think it helped me stay in better 
shape over the years.

-- 
- Frank Krygowski