I have been reading Wishon's book "In search Of The Perfect Driver". If some of his information is true, it is a real eye opener.

One of the things he talks about is that there are two MOIs associated with any club. MOI is a rating that shows the resistance to twisting. The higher the rating the less twisting that will occur. He talks about the MOI of a driver head that resist horizontal twisting on off center hits on the club face. The other MOI involved which I never thought about, is the shaft's MOI, or resistance to twisting. In other words how much the club head will twist about the shaft. Is this the same as the torgue rating you see in shaft specifications? What he goes on to say is that a club with a high MOI about the shaft, in it's self (can?) causes the club head to be a bit more open at impact. This problem will be magnified with the larger 460 club heads since a high MOI shaft will not allow the proper amount of twisting. Maybe?? So, to get a well fittied driver, you need to match the MOI of the club head to the proper MOI of the shaft. At least I think that is what he saying.

I am not a club guru by any stretch, but this seems to make sense. I use to think that if you bought a driver with a high MOI club head rating you were getting a complete club that had a high resistance to twisting. The manufacturers selling point is that their driver head has a very high MOI, without really mentioning anything about the shaft. Now I am not so sure depending on what shaft the club head might be combined with.

Any club fitters on here who can add more +/- info to this scenario? Me thinks I am confused here...lol. FHs

HA HA HA ya this is a mystery and you need a science degree to understand it. No not really but a few classes or a lot of reading does help. I don't think there is a MOI in a shaft but yes there is torque which has to be matched with YOUR speed and tempo. It seems simple to put a really "tip stiff" shaft in every club to resist twisting or opening and closing of the face upon impact and call it a day. But this is not the case. Your swing contributes to the twisting of the club face and you need feel as well. If the torque is too much then you may not get the clubhead square at impact and it does not really matter what the MOI in a head is. It is really hard to explain and I do not understand it fully myself BUT it does all have to work together to produce magic. Like starting a car. you cant just turn the key and expect power to go straight to the engine to start. It must go through a coil,  then a regulator to control how much power goes to the starter. Same in a shaft and clubhead. There are sites that will explain this through google or look up Tom Wishon who is a great club maker he has insight on this too for reading.

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Golf is my rush

http://golf.about.com/od/faqs/f/moi.htm

Thelink above explains that there are more than two MOIs in the whole club when it is being swung. FHs

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Golf Should Be Played.......No Watched