Project X Blue 6.5 Driver Shaft

would echo the first line of the previous post - as to who recommended a stiffer shaft? if that recommendation was with the knowledge of some 'measured' launch parameters ?

there's stiff shafts & then's there's a bunch tip stiffer & heavier ...

the real important couple of numbers to best driver distance would be LA & spinrate (assuming good impact face location)

the 'blue' is also likely to be heavier than the newer low launch low spin shaft models, so heavier & 6.5 gives a torque that takes some swinging particularly through a whole 18 - project X's newer versions of the blue, in the 'Black', the 'PXV Tour52' & 'PXV' maybe not quite so taxing to swing but still have similar shaft profiles, stiffness through the shafts overall torques - Blue is heavier, butt stiff, mid not so stiff (in relation to butt & tip), but tip stiffer than butt

if the problem, the driver issue, with the current shaft is too higher launch too much spin & you don't know the launch monitor #'s would possibly be down to technique issue & adding more loft at impact - especially if 'true' carry is under 230 yards
if it's not so much about height issues but too many 'lefts' that maybes not down to stiffness of shaft (though it could be) but more down to the combination of swing path, face angle & impact face location

but if the 'true' carry distance is over 250-260 despite higher launch & high spin then could well mean current shaft is not well matched to 'release pattern', CHS, & launch conditions

appreciate the shaft buy is an experiment to some extent & given the newer shaft releases the older 'Blue' (guess its the 70grms version) could be a ways cheap anyways

but you would really need to know the current launch condition #'s, shot outcome #'s, plus what the 'release pattern' is as a norm

so as a kinda ballpark figure to 'work' it efficiently the swing model would be up to PGA Tour average around 112mph with a quicker overall tempo at transition to stress the shaft combined with a late release given the shaft is tip stiff

if more an index players average at 90 even a better index player 95-104 mph with an earlier to mid release is going to find most likely that the LA is too low plus there is not enough spin to flight the ball - so ball flight would generally tend to be low, right & short given a strike from best location on face (in line with head CG)