Noob question - Cateye cycle computers

SpinningJenny
SpinningJenny Posts: 889
edited April 2009 in Road beginners
I fitted a Cateye cycle computer to my bike yesterday afternoon, it's all set up, wireless bit is working, all good so far.

But a question I do have is this: Obviously, the speed/cadence transmitter is not fitted at the extreme perimieter of the wheel, so how does the computer know how far I have travelled? For example, I have input the correct mm travelled by my 700 wheels, but my transmitter isn't at 700, it's (for example) at 697.

Or, am I being silly? (It's happened before!).

Thanks all...
Ned Flanders: “You were bicycling two abreast?”
Homer Simpson: “I wish. We were bicycling to a lake.”

Specialized Rockhopper Pro Disc 08

Comments

  • topher9
    topher9 Posts: 54
    It is a magnet - so every time it passes, the magnet registers that you have done one rotation - then from that, works out how far you've gone.

    So, it doesn't measure the distance per se, instead it measures how many times your wheel goes around and then multiplies this by the size of your wheel..

    Does that make sense?
    http://chrisfalconer.wordpress.com
  • SpinningJenny
    SpinningJenny Posts: 889
    edited April 2009
    Yep, I get that. it just seems....

    Ooooh, hold on I REALLY get it now. I sense a lightbulb moment!

    Doh!

    Seems that the Homer Simpson quote in my signature is more apt than I wanted it to be.. :lol:

    Thank you! Such a girl *sigh*
    Ned Flanders: “You were bicycling two abreast?”
    Homer Simpson: “I wish. We were bicycling to a lake.”

    Specialized Rockhopper Pro Disc 08
  • Anonymous
    Anonymous Posts: 79,667
    lol, quality quote...

Categories