Today's Forum Topics
Set as homepage
|
View
New Forum Topics Today's Forum Topics Set as homepage |
 |
|
|||||||
| |
||||
Welcome to CyclingForums.com You are currently viewing our website as a guest which gives you limited access to view most discussions. You will have to register before you can post to this thread. By joining our free online community you will have access to post new topics, communicate privately with other cyclingforums.com members (PM), respond to polls, upload photos and access other special features like product reviews and classifieds. |
|
|
Thread Tools | Search this Thread | Display Modes |
08-04.-2004, 04:53 PM
|
#1 |
|
Guest
Posts: n/a
|
Re: max speed 369 kph
I got a similar problem by passing through an alarm gate in a shop. But my
bike computer only reaches 99 km/h. I have to train me more to reach you 369 km/h... "John Henderson" <jhenRemoveThis@talk21.com> wrote in message news:c3qrfc$2bcfvi$1@ID-83062.news.uni-berlin.de... > I came home from my morning ride and found that my bike computer > (a VDO C10 - wired, not wireless) had registered a max speed of > exactly 369.00 kph (the C10 reads to 2 decimal places). > Normally, I see a figure in the 40's or 50's. > > I got to wondering about the cause, and thought that I might have > ridden close to a strong AC magnetic field at mains frequency. > Since the Australian mains frequency is 50 Hertz, this could have > switched the fork-mounted pickup at either 50 or 100 times per > second (depending on whether both half-cycles did the switching, > or only one - an AC electromagnet reverses polarity with each > half-cycle). Given that the computer is configured for a wheel > circumference of 2050 mm, that gives me a switching frequency of > 50 Hertz exactly (to 3 decimal places) for 369 kph. > > So I think I've found the cause, and it got switched only on > alternate mains half-cycles. Alas it wasn't a sudden, dramatic > increase in my fitness. Still, it's nice to know the C10 is > capable of registering pulses at that speed. > > John > > |
|
Linear Mode
