This is the Williams..
the one below is a 172 mk2..
Very interesting reading.
The second graph is indicative of all the 172s today.
Note that the williams can pull much stronger in the lower gears and achieve a highe power at the wheels in the early stages. The gearing on the williams is, IMHO superior to the 172 Mk2. Also, the cams on the Mk2 are much flatter in the power delivery.
I will never underestimate a Willy again
Nick ??.. whats yer thoughts. ?