Originally Posted by DEH
Thanks for posting all the good info. Here is what I got. I have tune my daughter's racquet (she is 15) for a long time using Travlerajm's method and it seem to work very well. I ended up with 324g with a balance of 32.7 and swingweight of 310. She was using a windsheild style forehand and it seemed that the shots where very spinny but not a lot of power. I tried all kinds of strings and tensions and I could not get any more power out of it. So we changed here swinging style to a Djokovic style swing which took about a month to do. Now that racquet will not work at all. The balls fly all over the place. No control at all. Tried more strings and no luck. So I tried another racquet. It was an nTour Wilson and it has some weird specs so it could be fake I don't know. Well she started hit a little better. So I just started adding lead to the top of the racquet and it got better and better and better. I added 18 grams at 12. So now her shots are controlled with a lot of spin and power. The specs are 314g with a balance of 34 and 337 swingweight. Not really close to the other specs. So I was just trying to figure out what is so different between the two styles of hitting and the curve on the racquet map. Here is a link for some WTA specs.
Look at Sloane Stevens racquet. Thanks again.
I think that the relatively low static weight in combination with the relatively high sw gives a longer dwelltime, a whippier feel and thus more spin.
My guess is that with her old racket the rackethead was feeling light to her in relation to the static mass and balance. Resulting in high rackethead speed and thus easier spin, but less plow. Djokovic drives thru the ball flatter which would be harder to do when you don't feel enough weight in the rackethead.