Maninblack4612
Tour Winner
Most folks think shafts have more say in being able to reduce spin rates by a large degree, truth is that's definitely not so, no matter how expensive or exotic, they can only do some very fine tuning.
The flex, to the extent of Xstiff to Reg to Ultra Flex & where a kick point is of a shaft and how it's delivered through the strike will impact launch angles by a few some degrees, but have a much lesser effect on change of the spin rate.
Swing speed will effect spin rate depending on what angle it's delivered to & through. Three swings of the same 110mph, one with a steep -7 AoA will not only produce pretty high spin rate but decrease available overall distance from that swing speed by some 50 yards, 0 level through the ball will reduce spin rate considerably therefore the ball will go further, +AoA of 3 to5 will give you optimum spin rate & LA & optimum distance, given all three strikes being centered from sweet spot.
Biggest effect by far on spin rate is where on the face the balls struck.
Biggest influence on launch angle is shaft plane & swing path & the AoA, plus most importantly where on the face the ball is struck.
Speaking from experience again, I have found that, for the same angle of attack & swing speed, different shafts have a huge effect on launch angle. I've had shafts where all I can do is sky the ball, whereas the Black Tie I am now using gives a perfect flight with, dare I say it, less spin, yes, possibly only 500 rpm but it's the launch angle which is more important on my exposed course where high shots not perfectly hit are deflected a long way off line.