Let’s be CONTROVERSIAL about SHAFT FLEX. Does it make a difference or not, shaft flex and weight and not to mention bend profile. Well YES it makes a huge difference to 99.9% of golfers out there, however there is a very small percentage of golfers that shaft flex and weight makes no difference whatsoever……
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28 Comments
I would like to see you use the optimiser to fit a driver
Really interesting 👍
I don’t even pay attention or have a preference for flex or weight anymore when I go to get fitted…until there is a standard across the industry, no need to. Some companies call their shafts stiff when it’s really medium, but they do it because it’s “more macho” to swing a stiff shaft…it’s all rubbish as you say over there…if I get the feel, distance, and dispersion I want/need. I couldn’t care less if the shaft was rebar or a piece of uncooked linguini…
Great video! At the moment I am swinging Dynamic Gold 105 S300 with my New Level 1031s. But I am looking at some new irons (221-225 😋) and switching to graphite maybe.
Interesting information, does the type of shafts make a bigger difference for higher handicaps / slower swing speeds?
Yes, a video on the shaft optimiser would be really good please!!!!
You say you are not shaft sensitive – have you tried hickory?
great video…cheers from Canada
But you WOULDN’T play the A flex full time. So don’t say there isn’t a difference.
Great video, thanks for the insight. Far more entertaining than the view driven, generic dribble portrayed by many.
Would love a more in depth video on the Mizuno swing analyzer. Got my numbers on it a few years back, interesting tool.
Shaft make as much difference as the Club head.. You can have the Right Club head or Irons but in the Wrong Shaft you will be inconsistent with shots.
You should show the Dispersion. Head Speed and Distant only tell part of the story.
I agree with you in terms some people just arent sensitive to shaft changes, and get make micro adjustments to get good results. What about lead shaft deflection? A weaker shaft will deflect more at impact causing more dynamic loft to be presented. Its not much but its real, just like the shaft droop. Another good experiment i think would be interesting is to rotate one shot back and forth between the two shafts, not allowing yourself to adjust to the different shaft.
Confused as to how you couldn’t swing the lighter shaft faster.
Yeah… somehow this vid has made my mind quieter
I prefer the Project X lz in 6.0 in my irons but my fitted shaft is the Project X rifle 6.5
I have some health issues and on a bad day the 6.0 LZ allows me to get the shaft to work properly.
Same in my woods and driver.
I'm playing a stiff 1k black or LA Golf Blue AXS but they are both heavier models.
In the X stiff I need to go lighter and then my dispersion starts to get a bit random.
I like that it's a fairly good indicator to get a shaft that your comfortable with and is still in the ball park.
Love it!! I was in the Ping i500s with LZ 5.5 and loved them, but between ice hockey and golf I was having a lot of elbow pain. I went to a ping fitter to try graphite, no matter what shaft I tried my shaft was best by far. I have since transitioned into a WS D7 forged with a completely different shaft ($taper 100s at 100 gms instead of the 115 for the LZ) and I strike the ball a bit better with a lot better feel;. Not sure it sheds any light to the conversation but thought I would share.
I’m a bit lost at the moment Jay. Got fitted for the 921 Hot Metals with a Project X LZ 5.5 115g shafts using the Mizuno swing analyser. Consistency is my biggest issue and that’s down to me and my ability I suppose. My wife has some very flexi, shorter clubs with graphite shafts and I hit them better (length airside) as I can feel the shaft loading and therefore I swing slower to control it. Particularly so with the higher lofted woods. I sometimes think the slower swing (I’m 62) is what I should be doing and therefore I may have the wrong shafts in my irons. Your guidance appreciated Sir. Cheers, John.
Does a Mizuno number represent "pull rather than load/bend"? And are you more sensitive to swing weight, rather than loading?
I'm currently experimenting with Aldila Ascent in my FW woods, and I am loving them. I feel the power/effort comes on more smoothly than other shafts I have tried recently, but the really big one for me is that i seem to be getting less "snaps" to the left, which was a problem with my Project X. And the shaft is supposed to be stronger at the tip, heavier at the tip and load/bend higher up shaft. That torqueing change really seems to be real.
Even if graphite is half the weight as steel you will get used to it quickly and have better results
When you fitted me jay i think I was on average 5.7 degrees toe down with my old irons and shafts apex pro px 6.0 and now mp20 mmc kbs c taper 130x are a touch toe up so shaft makes a huge difference for some keep up the great videos and would also be interested in a more in depth dive on the mizuno shaft optimizer 🏌️♂️⛳️
Really interesting video.
I think that a lot of it is based on what feels comfortable to the individual. I borrowed some irons with X100’s in and hit them really well. On paper I’m not an X100 person player!
I was recommended LZ 6.0 on the optimiser a couple of years ago.I started getting elbow pain this year so thought I’d try Steelfibers. I took a punt of used set of irons with SF110’s in and have really enjoyed them!
They were no5 on your 12’s list!
The elbow problems went away too.
I would love a video, like you hinted at, about the SwingDNA, how it works, what it measures, optimises on etc. The reason I'm particularly interested is the following.
I put my golfing life in the hands of the optimizer back in November when I got fit, trusting it (and the fitter) would know better than me – and boy did it/he know better!
I was coming from Callaway Apex '14 with graphite Recoil 660 F3 shafts (71g., regular flex) My lengths was just way too short.
Going into the fitting, I actually thought, that I had to have an even lighter shaft, possibly graphite senior flex (I'm 55 years old – 7i speed at the time around 80-83-ish).
With the input from SwingDNA, I got fit to steel KBS C-Taper Lite Stiff 110! That is going from a 71g regular graphite shaft to a 110g stiff steel!! 😮
The Mizuno shaft fitting device had that as one of the top shafts for my swing – the existig shaft I had was almost at the bottom at (as I remember it) 0,8/5 rating – not the exact same, but a very similar shaft. So I was playing close to the worst shaft for my swing!
I was initially very sceptical about the shafts presented to me, but the results were indisputable. With the new Irons, I literally hit the mid irons 15-18 meters longer (7i 130-133 meter vs 145-150ish meter carry) among many other good things, like feeling of control, accuracy, consistency, ability to just put a smooth unforced swing to the ball etc.
Of course some of it comes from the new stronger heads, but i beleive the shafts play a major role in this. It would be excellent to understand better what the SwingDNA actually does in the analysis, that helped me so much.
Getting back to your video here – I beleive the difference made was from changing a 71g 🪶shaft to a 110g 🏋♀ – and probably some other characteristics of the shaft as well. 🧐
So please do the in-depth shaft-nerd SwingDNA breakdown 😃
I can go the DG 120 to 80 MMT in my sets with no issues but my flex always stays the same
I was surprised to see that the modus 115 s weighs more than the modus 120 s.
V.interesting, thank you. I used this system when getting fitted for Miz irons, found it v.useful and ended up with a great set of irons for me. As an experiment, we hit the least suitable shaft on the list – a heavy old style DG stiff which should have been low launch and spin but when hit was the complete opposite!? Even stranger when I was fitted into DG 120 x100. So same company slightly different weight, totally different result! I guess I'm firmly in the shaft sensitive category. Always wondered why there is not a dna fitting tool for driver/fairway? Surely that would be super helpful as a starting point.
Dispersion?
Jay…what’s amazing about what you do, is to swing various club ‘weights’….( flexes) with similar speeds. Most golfers I fit are very weight vs speed vs flex ‘feelie’ which your not…Speed vs flex usually shows loss of distance….with the overly X steel. Interesting