He had the driver they fitted him for and asked me to check it.
It was an r 510 with a Mitsubishi rayon shaft...
He asked me to pull the head and set it up right but I marked it instead and told him to have TaylorMade do it as I wasn't sure at what temp. Rayon melted.
At any rate to shorten an already long story, I've been trying to learn more about these shafts and was hoping someone out there had some comments....
<http://www.mrc.co.jp/english/rde/3-1_3.html>Click here: MITSUBISHI RAYON - R&D
David, I checked the web site you posted. Here's what I come up with:
Mitsubishi Rayon is not a material; it is a company, a division of the Mitsubishi company -- or, more likely, a wholly owned subsidiary.
One of their products is carbon fiber. They claim that their carbon fiber is better because of the precursor material they make it from. (No, it's probably not rayon that they make it from, but it is a fiber that we more commonly associate with fabrics.)
The shaft is not discussed but the material and its use is. Sounds like the application is the very standard sheet-wrapped "graphite" shaft operation: carbon fibers in a prepreg, and bonded together with a resin (almost certainly epoxy in the case of golf shafts).
Hope this helps. DaveT
