Originally Posted by corners
I see where you're trying to get to. But your question isn't complete. You need a bit more at the end:
Will stringing a 63 RDC stiffness frame with full poly at 53 pounds allow the frame to play like a 70 RDC frame strung with X at Y pounds?
But even then I don't think there is an answer for you. I'm not even sure whether the frame stiffness or the stringbed stiffness is a bigger factor in the "total" stiffness of the racquet/string system.
But here's a question for you that might lead somewhere: What quality of the 70RDC frame are you trying to reproduce in the 63RDC frame?
Nice post corners, as usual. I have a related question if the OP doesn't mind: If you string at very low tensions (e.g. poly in high 30s), would that to some extent mask the flex of the racket, i.e. would it make a stiffer and a flexier frame feel more similar than strung at high tensions?
RF97, stock, full bed BHBR16 or TB16 @ 18x16 kg
Still in bag 2 x Dunlop 4D200 Tour, tailweighted to ~10 pts HL, 374g