Thanks ladies,

SK-I understood what you meant by max HR but couldn't respond as i was lurking whilst at work...
Doc-that's the number I was referring to(220) and now understand it could be/should be/can be bunk.

Dogmama-you could be right about me turning my cycling into a science project...some days it seems that way...

I guess the main reason for me asking about cadence is I wonder if i'm improving or not. As i normally cycle on my own the answer lies only with me.
It's just annoying having people fly past me when there's a strong headwind along the swan river cycle path..

Perhaps my thread should have been about cadence & headwinds....

c