I don't mean doing actual math (I have no idea how to calculate any of the things I'm going to post and I'm not asking anyone to put that much effort). The general knowledge that gets passed around is that flexible rackets = more power, less control stiffer rackets = more control, less power The control aspect I get. A stiffer, more solid frame should have less torque/flex that can mess with accuracy. It's the power aspect I'm unsure about. It seems to me that stiffer rackets should provide more power, in the same way that a stiffer bow/crossbow provides more power. Like bows are measured in draw weight (how much it takes to draw the bow) and higher draw weight bows are used for hunting bigger things. The harder it is to draw the bow, the more power is imparted on the arrow/bolt when you loose it. I'm not trying to compare bows and crossbows directly here, there's reasons for why crossbows usually have such high draw weights but that has nothing to do with badminton. I'm merely looking at the general idea that stiffer bow = more power. The bow is stiffer and therefore snaps back into its original shape faster than a more flexible bow. So it seems to me that a badminton racket would work the same. If you can flex an ultra-stiff shaft with your swing, then you should be able to generate more power than if you had a more flexible shaft. Assuming all other things are equal (racket weight, length, balance point, etc...). I tried to draw and 80lb bow once and I wasn't able to. Therefore I couldn't shoot the arrow. To me, this would be the equivalent of giving a ZFII to a newb. They can't swing properly and therefore cannot flex the stiff shaft of that racket. So because they don't have proper strength/technique to flex it, they can't get any of that sweet power out of it, just as I couldn't bend that 80lb. bow. But if they'd given me a 50lb. bow, I probably could have used it (like giving a newer player a more flexible racket). The weapon known as a blackjack/sap functions similarly as well, I think. It's a lead weight on the end of a tight spring wrapped in leather. When you swing it, the spring bends back, because of your swing speed and the head weight of the lead tip, and then all that energy is released at the moment of impact. Does this sound correct to anyone? I feel like flexible rackets are more forgiving and easy to use, but that a person should be using the stiffest racket they can bend with their swing in order to maximize control and power. Or am I missing some detail regarding the physics of how the bird is struck?