Why? It's been proven wood really doesn't slow up pure power much on the serve. I'm not talking about pure speed now with today's racquets anyway. I'm just talking about the forehands in tennis HISTORY that were reputed to be very fast. Most of these guys probably toned down on the speed compared to today since with wood racquets you couldn't hit with the topspin to keep the ball in play as well but it doesn't mean these guys couldn't belt the ball.
Pancho Gonzalez was close to 6'4" tall and was extremely strong and agile. If you check my post I meant relatively speaking. Key word, relatively.
Do you think Pancho Gonzalez couldn't hit the ball as hard as for example Serena Williams if he had today's racquets? Serena can hit some of her groundies like blurs. I would tend to think Pancho Gonzalez could hit the ball with today's racquets much faster than Serena. Pancho was probably a far stronger man than his ex brother in law Andre Agassi anyway when Pancho was in his prime.
Check out this weakling on youtube.
http://www.youtube.com/watch?v=Nd0gJzm_EQY
ok, you're then talking something different from what the OP asked for. Your use of the term "relative" wasn't clear.
i don't doubt Pancho could hit the ball as hard as Serena williams, if he had access to modern racquets. But he didn't. In terms of pure velocity, I don't think any of the old-timers you listed hit it anywhere close to what the Delpos and Soderlngs can do today.