On 15/04/2011 18:27, William "Chops" Westfield wrote: > I dunno if I'd trust a "Watts output" from an exercise machine to be > technically accurate, or even consistent between different vendors... Me neither, without knowing a little about how it was calculated. I=20 would only use it as a rough guide of how I was improving (if you use=20 the same machine/settings) For instance, it may be done indirectly using other readings. I have managed to attain ridiculous speeds on some gym exercise bikes,=20 which unless I was riding behind a shield on a suitable racing surface,=20 I would have no chance of achieving in "real life". --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .