Originally Posted by NorthernDancer
James, what would you consider to be the best predictor of a horse's speed, if not power?
I don't know enough about horses to know what would be a good predictor - if I did, I could win a lot of money betting on horse races
But even a little thought suggests that it's not sheer power, otherwise Percherons and Clydesdales would be winning Kentucky Derbies.
Nor is it even as simple as that, because there is a lot of variation in how power is applied. Consider e.g. A match between a Thoroughbred race horse versus a trained endurance horse. I bet the race horse would be way ahead at the end of the first mile, and unfit to continue after five.
Same thing applies to cars, too. You need to know a lot more than power and gearing. A Ford F350 has several times the power of a Lotus Elise, but which do you think will go faster?