I can speak for the RIP shaft in saying that it is a lower torque shaft than the Titleist Voodoo and feels a little stiffer. To me the Titleist Voodoo was a little "whippy". Not to say the Titleist Voodoo was a bad shaft, but I think the RIP is better…

Why would you want to do that and what flex are you looking for? 

IMO ball speed not club head speed is a more important factor to consider when selecting a shaft.  There are many other variables to consider to give the player their preferred trajectory, feel and performance that they are looking for in a golf club.  As…