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I did this experiment because I am currently using blades after using game-improvement irons for a long time. And after a few rounds with the blades, I have found no real drop in performance.

Moment of inertia (MOI), a measure of an iron’s forgiveness, is as a selling tool for new irons, but I am not sure how much real improvement it is offering the golf community. My video goes a long way to show that maybe the way we’re thinking about fitting irons to our game is quite wrong. 

Both the irons I tested in the video had stiff shafts. The Mizuno MP-5 (blades irons) had True Temper’s Dynamic Gold S300, while the JPX-EZ (game-improvement irons) had True Temper’s XP 95 S300 shafts. Both irons were tested with stock lofts and lengths.

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Mark Crossfield has been coaching golf for more than 20 years, and has enjoyed shaping the digital golf world with fresh, original and educated videos. Basically, I am that guy from YouTube. You can connect with Mark on Periscope (4golfonline) and Snapchat (AskGolfGuru), as well through the social media accounts linked below.

29 Comments

29 Comments

  1. L^E

    Apr 25, 2016 at 4:49 pm

    I’m a 10 handicap and play a set of blades and I often hear comments like “wow blades, why make the game harder?” or “you must be really good if you are playing these clubs” (which i’m not really good, I’m just average). Truth of the matter is, a crappy shot is a crappy shot. A GI club isn’t magically going to turn a chunk into a pure shot pin high. It IS true that your off center shots will most likely fly further with a GI club, but not by a significant amount. And for me, blades offer the “feel” when you hit that pure shot to know you hit it pure. Feedback in a club is an important part of improving your game. I’m not advocating that everyone should play blades, it’s a personal preference. But I think we need to realize that blades are not just for scratch golfers.

  2. Bryon

    Apr 22, 2016 at 8:38 am

    I would like to see a high handicapper do this experiment. Someone in the 20s range go through this with the data so we can see side by side if GI irons are better or not.

    I’m curious to see if GI irons truly benefit a higher handicapper or not.

  3. Hawk

    Apr 21, 2016 at 9:35 am

    As a high handicapper myself I hate GI irons and find them to be a marketing ploy to get more players into golf. One of the biggest reasons people leave the game is because it is so hard to hit the ball. GI irons make it easy, but it doesn’t make you better.

    I maintain this view because I see my game progressively improving year after year, while I see my buddy struggling to get better. We both started playing at the same time. he went the GI route, and can’t chip, pitch, and has no accuracy at all under 100 yards. On the other hand I am very accurate and very good and chipping and pitching when you consider we are both handicapped in the 20s. With every iron I am far more accurate and consistent than my buddy. I play MP-60s.

  4. Eric

    Apr 18, 2016 at 2:46 pm

    Very surprised that there is not a larger gap in distance since the JPX 6 iron is 2 degrees stronger than the MP series. To be fair the MP5 does not behave like most blades and is much larger than any other blade offering from Mizuno. I feel that it is way more forgiving than any other MP I have seen outside of the H series. I agree with the earlier comment, I would like to see this test with an MP15 or even a MP4. Those are the last of the compact head, thin top line Mizunos. If not Mizuno test the Titleist MB or Callaway x-forged. It would be fun too for Mark to hit an 11th shot where he tries to “step on it”.

  5. Justin

    Apr 18, 2016 at 12:59 pm

    This is interesting and I have 2 different views. Being a scratch+ golfer (as I assume Mark is as well) there is no need for me to hit game improvement irons, as I strike the ball in the center of the face more often than most. However, I performed a similar test with taylormade mb irons vs the new PSI forged. I found the PSI’s traveled about 8 yards further on average (after 20+ shots with each) and had just about the same amount of feedback. The spin rates were also very similar, with the main difference being the ball speed and launch angle. Both clubs had X100 Tour Issue shafts and were identical in every way outside of the head obviously. The 8 iron of the blade I believe is 1 or 2 degrees weaker than the PSI, so it doesn’t shock me that it went a little further, but the big surprise was that it actually launched higher on average than the mb. So I think this discussion need to be separated into 2 categories: 1. Players cavity vs blades for low handicappers and 2. GI vs standard/players cavity for higher handicappers. Players cavity irons are the wave of the future as more pros are moving away from blades. The thing that has changed is the feedback we get from the cavity irons is better than ever, and feedback is one of the only reasons I played blades in the past.

    An interesting side study to this would be if there was a way to test players hitting crucial shots in their club championship or other tourney to see how often they can hit the center of the club face under pressure. That brings me to my final thought: confidence. You should hit an iron you feel looks good and sets up well at address. Never choose an iron based on the so called benefits alone. If a thin top line makes you feel better over the ball, you should probably play the mbs over the PSI forged. The few shots that matter greatly during a round (getting out of trouble, forced carry, green with water/sand) are influenced most by how a player feels in the situation. You’ll hit a good shot if you feel you’ve got the right club in your hand. Beyond that, what’s in between your ears is still more important than what’s in your bag.

    • Matto

      Apr 19, 2016 at 5:53 am

      Last I heard, Mark’s a 9. I could be wrong.

      • ParHunter

        Apr 21, 2016 at 5:09 pm

        You must be joking! Check out his GameGolf profile. That calculates a GG handicap (which tends to be close to your real one) of +0.6. Bis average score is 73.7

  6. Daddy Divots

    Apr 18, 2016 at 12:24 pm

    I switched from a players iron to a GI (Speedblade) after about a year of having kids. I had no time to practice and my ball striking suffered. When i made the switch my 1 round per week became a lot more enjoyable and the scores came down significantly.

    I have been as low as a 5 index (pre-kids) and climbed over 12 once the practice sessions were no longer an option. GI irons helped me quickly get back to a solid single digit.

    You can fawn over the blade, it’s beauty or whatever all you want, but the average person or the 12 handicap is going to see improvement with GI irons.

    God bless technology!

    • Hawk

      Apr 21, 2016 at 9:24 am

      I beg to differ. I play MP-60s and my buddy plays RocketBladez. My shots are far more accurate and far more consistent than he has every been. We both started playing at the same time, and both our handicaps are in the 20s.

      there are shots he can’t make and won’t make because he isn’t comfortable with it, or doesn’t know how to do it. For me, there is nothing I can’t hit or do. Call that confidence vs club, but the theory that GI irons will benefit is a total falicy. It is a gimmick to get people to play the game by offering an easier to hit club. Is it easier to hit? Absolutely, but it doesn’t make you a better player. If you want to get better and be a better player, I maintain, even as a high handicapper, stay away from GI irons.

      • BHS

        Apr 22, 2016 at 2:38 pm

        I have to disagree with you Hawk…I did the same thing as Daddy Divots…combo blade set(McGregor V-foil yr 2002 when they were good) to the X-Hot pros by Callaway. I had the same thing happen to me since I didn’t play as much, from 6-7 times every month to 3-4 times with 2 months off. My handicap was going up to 9-10 range from 4-5. Most of the issues was not hitting enough greens from 170-210 range. Since I made the change…dropped back down again. One of my playing buddies is about the same handicap as you and he plays they same no mater what clubs are in his hands, his clubs.. to mine to a friends extra set of blades.
        I do think that this problem helps someone in the 5-12ish handicap range more then someone in your range.

        Honest Question, if you both you and your friend started at the same time and you can hit shots he can’t… and as you said..”On the other hand I am very accurate and very good and chipping and pitching when you consider we are both handicapped in the 20s”
        Have you considered that if you used GI clubs you would be in the teens?

  7. Lowell

    Apr 18, 2016 at 9:57 am

    Nice video and is pretty spot on. A player does not intentionally aim for the toe no matter how high a handicap. A high handicapper is inconsistent in where they hit the golf ball on the face so even if they had a game improvement iron, it would not improve their outcome.

  8. Tony Wright

    Apr 17, 2016 at 5:35 pm

    Mark interesting test thank you. Is there any chance you could duplicate the test by hitting the EZ club with the same shaft you use in your MP5 clubs – Dynamic Gold S300? The XP 95 shaft is about 35 grams lighter than the Dynamic Gold shaft, and the XP 95 shaft flex profile throughout the shaft is a lot softer than the Dynamic Gold shaft flex profile. Would that make a difference, who knows unless you do it with the same shaft. All the best.

  9. Square Grooves

    Apr 17, 2016 at 2:38 pm

    So a scratch golfer finds little difference between a blade and a shovel on Trackman. Shocking. Have a 14 handicapper do the same comparison, and watch the blade numbers go sideways.

    • jcorbran

      Apr 17, 2016 at 3:52 pm

      14? average golfer shoots 100, that’s a 28ish. You didn’t hit anything thin or fat, test those clubs while chunking them all, see what works better.

  10. KC

    Apr 17, 2016 at 2:04 pm

    I recently demo’d the new Titleist 716 irons and the best performer for me was the CB hands down. AP1 were a little bit longer, as you’d expect with the stronger lofts, but those CB’s were going as far as the AP2 and T-MB irons (despite their lofts being a tad stronger) yet felt way more pure. On mis-hits I noticed exactly the same impact to the shot with all the irons, so it really is a no-brainer for me that the CB was what I’d bag from that line. If you can consistently strike the ball then why not play an attractive club like a CB or MB?

    • golfraven

      Apr 20, 2016 at 4:36 pm

      I agree here with you. The only clubs I would consider now are the CBs, even if the AP2 might be the better fit. Maybe even a combo of MBS and CBs but I guess this is just being funky.

  11. JustTrying2BAwesome

    Apr 17, 2016 at 12:59 pm

    I’m surprised a hot faced iron isn’t flying a lot farther than a solid faced blade. Seems to for me in the long irons, but what do I know. Thanks for the review Mark.

  12. Tom Duckworth

    Apr 17, 2016 at 12:02 pm

    Very nice Mark. For a number of years I believed I should leave my old blades in the basement because no one can hit them but the pros. I never went full on GI irons I would buy the cavity back cut slot type of iron that I just didn’t really like the feel of. After breaking out my old Wilson Staff blades and hitting many buckets side by side with the cavity back irons like you I could not find any real meaningful difference.
    I hit my irons well but by no means am I a scratch golfer.
    I have to miss hit pretty baddly to really see a difference and a bad strike with any iron is a bad strike.
    I do feel like if mfgs. can convince us that all these different irons will make a difference they will sell more irons. It just make sense if you have six different irons to sell that a golfer will find something in your line they like or think will help them. I’m sure there are golfers that walk in the store and just look at GI irons because that’s what they think they can hit and never look at anything else they might enjoy more. Just think if Titleist made one kind of iron and said “This is the perfect iron” even if it was they would never sell as many. I’m not saying everyone should play blades I play Wilson FG Tour V2s because I like their feel and I know how far it will go when I hit it well but they are never HOT. Blades are not as hard to hit as some would have us believe. I must say I’m glad to see you playing the MP-5s I was a little bummed when you were playing the GI irons.

  13. George

    Apr 17, 2016 at 3:55 am

    I recently went from MacGregor player cavities to MP-59. I tried more game improving irons like XR, XR Pro, but unfortunately I can’t even look at those large heads with the thick top line. Sorry, but look of the head at address is important for me. The MacGregors just spoiled me in that category.

  14. RG

    Apr 17, 2016 at 2:44 am

    Thank you for being the voice of reason Mark. If you hit it out the middle it doesnt matter what you play and “forgiveness” is mostly a marketing tool. Now Guru tell them all about shaft flex! #the truth is out there

  15. Rich

    Apr 16, 2016 at 11:48 pm

    Mark, love your work. Anyone who gives me the drive to go back to blades is alright with me. Would like to see this test done with a 15 marker or something like that. Would be keen to see if there was a similar lack of difference. Cheers

  16. Other Paul

    Apr 16, 2016 at 11:16 pm

    I switched to titlesit 712 mbs. They are amazing. My game rose up to playing them very quickly. Got over the 4i fear as well. Good video Mark. Welcome to WRX.

  17. :-ppp

    Apr 16, 2016 at 8:35 pm

    What a totally clueless comment from somebody who knows nothing

  18. Eee

    Apr 16, 2016 at 7:58 pm

    Crossfield says: “We should all just have one ball, one shaft, one head type. And call it a day. Because it’s the Indian and the arrow. All the time. If you know how to strike the ball, you’ll figure it out. I hate all these shaft choices. “

  19. Jordan Speeth

    Apr 16, 2016 at 7:32 pm

    I’ve experienced the same and, as a result, have gone back to a much more blade-y iron (Srixon Z745). If anything, they make me more aware of the fact that I want to/need to strike the ball with the center of the club face and, as a result, I do. The feel, performance, spin control, etc. though, are much better with the Z745 than the GI club in the range. I do have a Z545 4 iron with a stiff Graphite shaft and I think that club carries the ball significantly further than the steel shafted Z745 that would be part of my normal set. It REALLY takes off like a rocket…the Cavity/slot back Z545, that is. Anyway, I find myself agreeing with Mark and the type of player who would supposedly benefit greatly from a GI club, i.e.. 60+ years old, cancer patient (loss of strength/swing speed), losing eyesight/hand-eye coordination but all those factors considered, I’m still a better player with the blades. I was a Ping guy for two decades too. I sometimes play with a vintage set of Haig Ultra blades too, a REAL blade, and I can say that, though they’re still great, contemporary blades are not your grandfather’s clubs. They ARE easier to hit than 50s thru 70s butterknives.

  20. Roger Daltry

    Apr 16, 2016 at 4:03 pm

    Play VR Pro blades after Titleist 690.mb’s, best golf of my life after many years of “player cavities.” Connection = feedback = improvement = results. It’s a smarter cycle. Few are aware!

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On Spec

On Spec: Talking about slow play

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Ryan has guest Rob Miller, from the Two Guys Talking Golf podcast, to talk about slow play. They debate on how fast is fast, how much time should 18 holes take, and the type of players who can play fast and slow.

Check out the full podcast on SoundCloud below, or click here to listen on iTunes or here to listen on Spotify.

Want more GolfWRX Radio? Check out our other shows (and the full archives for this show) below. 

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Opinion & Analysis

If Jurassic Park had a golf course, this would be it

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I have had the good fortune of playing some unbelievably awesome tracks in my time—places like Cypress Point, Olympic, Sahalee, LACC, Riviera, and a bunch of others.

However, the Bad Little 9 is the most fun golf course I have ever played…period.

Imagine standing on the first tee of a 975-yard track and praying to God almighty you finish with all your golf balls, your confidence, and more importantly, your soul. Imagine, again, for example, standing on a 75-yard par 3 with NOWHERE to hit it beyond an eight-foot circle around the flag, where any miss buries you in a pot bunker or down into a gully of TIGHTLY mown grass.

Sound fun?

I have played the BL9 twice at this point, with the first time being on a Challenge Day in November. It was cold, windy and playing as tough as it can. My playing partners Chris N., Tony C., and I barely made it out alive. I made four pars that day—shot 40—and played well. Do the math, that’s 13 over in five holes on a course where the longest hole is 140 yards.

It’s a golf course that makes zero sense: it’s punishing, it’s unfair, it’s crazy private, and on “Challenge Day,” it’s un-gettable even for the best players in the world. Rumor has it that there is an outstanding bet on Challenge Day for $1,000 cash to the individual that breaks par. That money is still yet to be paid to anyone…keep in mind Scottsdale National has PXG staff playing and practicing there allllll the time. To my knowledge, James Hahn has the lowest score ever at one over. That round apparently had multiple 20-foot par putts.

The Jackson/Kahn team which is responsible for the two big courses at Scottsdale National (Land Mine and The Other Course) were tasked with a challenge by Mr. Parsons: create a 9-hole course with ZERO rules. Take all conventional wisdom out of it and create an experience for the members that they will NEVER forget.

In this video, you will get a little context as to how it came together straight from the horse’s mouth, so I won’t get into that here.

I will end with this before you get into the video.

The Bad Little 9 sits in a very exclusive club in North Scottsdale, most will never see it. HOWEVER, what the idea of it represents is a potential way into bringing more people into the game, making it more accessible, saving real estate, playing in less time and having an experience. Hell, YouTube made short-form content a necessity in our culture. Perhaps the idea behind the Bad Little 9 will inspire short form golf?

I’m in.

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Opinion & Analysis

Hot Drivers: What’s really going on!

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Thanks to the R & A and Xander Schauffele, along with (allegedly) at least three other players we don’t know about yet having drivers test over the CT limit for speed, the golf world has exploded with hot takes on the subject.

Did the players know? Did someone else know? Are OEMs building fast drivers to trick the machine?

I’m not here to make hot takes, I’m here to talk facts and truths about how we got here and how Xander Shauffele (and potentially others) arrived at Royal Portrush with drivers over the CT limit.

First, let me make one thing straight, I don’t believe Xander, or any of the other players, had any idea their drivers were illegal/over the limit. Did they know they had a great driver that performed? Yes, but golf is a game of integrity and like life, in golf your reputation is everything; I don’t believe for a second they thought they were getting a distinct advantage against their playing competition.

How Does This Happen?

Modern driver heads are complex things. The tolerances that the OEMs and their suppliers work with are extremely tight—like aerospace industry tight—one engineer I have spoken to many times has said its actually tighter. You have extremely thin yet strong titanium, moveable weights, carbon fiber, and more working together in a complex geometry. They are built to launch golf balls up to 185 MPH all while maintaining flexibility so as not to explode on impact. It’s not easy to make a good one but the good ones make it seem easy.

A driver face will eventually wear out, its a fact. It can only take so many impacts before it will fail. The number it takes is generally very high, so high that many golfers will switch before failure ever occurs. It is well known within the industry that as drivers are used they actually get FASTER! The fastest a driver will ever be for ball speed are the few balls before eventual failure because of the increased flex happening with the face and the great energy transfer… but where does this flex come from?

OEMs are in the business of distance, and making drivers as long as possible. Thanks to advanced manufacturing, processes, and materials, they can now make drivers right to the limit and truly push the envelope with every single head. TaylorMade, for example, even openly talks about how thanks to the new speed injection on the M5 and M6 drivers, they are building drivers beyond the limit and dialing them back—pretty cool technology if you ask me.

Fast drivers + high swing speed players = a perfect storm for drivers to become hot.

The CT (characteristic time ) limit is .239 with an allowance of .018, meaning the absolute limit the OEMs have to work with is .257. If you get a driver that was measured by both the factory and your tour department and deemed legal at say .255 then you are good to go. But, without daily testing, we dont’t know when this “hot” stage in the driver’s life occurs: 100 balls? 1,000? What if you test before and after a round and it only fails after? No way to tell when it failed, maybe it was after the final tee shot and it was never non-conforming during play, what is the outcome? It’s not like the .003 increase would offer any distinct advantage once you factor in player and environmental factors, but still under the rules it’s a NO-NO.

You could even go the other way when it comes to wedges. I’ve been suggested the hypothesis that you could mill illegal grooves into a wedge beyond the limit but after a single bunker practice session of say 150-200 shots it’s now legal and RIGHT at the limit because of wear. In reality, this CT limit-pushing greatly benefits the regular golfer and allows any players to get the absolute most out of their driver (legally) when they get fit for a new one. Tour players get this same advantage, but because of their swing speeds, the likelihood of then getting to the fastest/hottest point is going to happen, well…faster.

Tolerance, Tolerance, Tolerance…

With so much talk about the tolerances of each head, what about the CT measuring devices? We’re talking about .003 microseconds! One tiny change to the way the test is conducted by the user, or how the machine is calibrated and there will be variance.

It’s the same thing when talking about lies and lofts, if unknown to you, the machine you use is off by a single degree then at least the whole set is “off” which from a players perspective is fine as long as you are seeing the intended results. Unfortunately, when it comes to the rules this could be the difference between a driver passing and failing—that’s a big deal.

What this has exposed and shown the world is that modern drivers really are pushing the limit for all golfers. Does it mean we need a rule roll back or adjustment to the CT variance to get the “hot” driver okayed…OR, does this mean the governing bodies to need put a real clamp down of how and when a driver can be tested and what it really means to “be at the limit”?

There is certainly a lot to discuss on many sides of this issue from player, rules,  technology perspectives, but if one thing is for sure, this really is just the tip of the iceberg to another element of the distance debate.

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