This is the method I was trying to pull out of the dark recesses of my feeble brain, Just could not think of using LT as the way of estimating the MHR, by some other means. Thanks CFB, maybe I can sleep tonight. I doubt that Bruce's friend would use that, though. Have you done a MHR test? They seem kind of rough to go through, but not undoable for a rider/cyclist.

Bill