Phil's Epic Flash Sub Zero

[mackdaddy]

I noticed in some recent pictures that Phil Michelson does not have the movable weight in his driver.  How will that effect the club?  Lower spin? Less forgiving and lower launch?  Faster?  does it change where the sweet spot is or how big it is?  Really what would the benefits be and what would the trad off be?  

 

I'm no fitter but would love to know?

[cnosil]

I noticed in some recent pictures that Phil Michelson does not have the movable weight in his driver.  How will that effect the club?  Lower spin? Less forgiving and lower launch?  Faster?  does it change where the sweet spot is or how big it is?  Really what would the benefits be and what would the trad off be?  
 
I'm no fitter but would love to know?

You would have to know the internals to truly know the answer. If the COG is forward it would have less spin and probably lower launch. Move it back more spin higher launch. Toward toe, more fade. Toward heel more draw.