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Look at the Shaft Flex on an 85-yard 7-Iron

iacas

By iacas,
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iacas Hall of Fame Member

iacas

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Image on the left: top of the backswing. Image on the right: look at the shaft flex!



7-iron, Rifle Flighted 6.0 shafts, ball went around 80 or 85 yards, tops. I just found it interesting how much bend there was in the shaft.

P.S. Yeah, my cameraman/slave moved a little, but it's the same swing.

P.P.S. Not the greatest of swing positions. This is one of the drills I'm working on.

Erik J. Barzeski — ⛳ I knock a ball. It goes in a gopher hole. 🏌🏼‍♂️
Director of Instruction Golf Evolution • Owner, The Sand Trap .com • Author, Lowest Score Wins
Golf Digest "Best Young Teachers in America" 2016-17 & "Best in State" 2017-20 • WNY Section PGA Teacher of the Year 2019 :edel: :true_linkswear:

Check Out: New Topics | TST Blog | Golf Terms | Instructional Content | Analyzr | LSW | Instructional Droplets

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Chilli Dipper Great Member

Chilli Dipper

Is that shaft made out of steel, or linguine?

In my UnderArmour Links stand bag...

Driver: '07 Burner 9.5° (stiff graphite shaft)
Woods: SasQuatch 17° 4-Wood (stiff graphite shaft)
Hybrid: 4DX Ironwood 20° (stiff graphite shaft)Irons/Wedges: Apex Edge 3-PW, GW, SW (stiff shaft); Carnoustie 60° LWPutter: Rossa AGSI+ Corzina...

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ryohazuki222 Dedicated Member

ryohazuki222

wow... that's pretty crazy. really makes me wonder what a ladies flex graphite shafted 7 iron would look like in the same situation.

Driver: Tour Burner 9.5° Stock Stiff
Wood: Tour Burner TS 13° Stock Stiff
Hybrid: Tour Burner T2 18° Stock Stiff
Irons: Tour Preferred 3-PW Rifle Project X 6.0
Wedges: 54.10|58.08 Z TP Rifle Spinner 5.5 Putter: VP Mills VP2 Ball: TP/Red.LDP Bag: Warbird Hot Stand Bag 2.0Started playing...

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Shindig Incredible Member

Shindig

I knew you wanted more distance out of your irons, but I didn't realize your distance was this bad

Seriously, does it always bend that much? If I were to take pictures of mine, would the same thing appear? Mine are much lighter shafts than yours, too.

-- Michael | My swing! 

"You think you're Jim Furyk. That's why your phone is never charged." - message from my mother

Driver:  Titleist 915D2.  4-wood:  Titleist 917F2.  Titleist TS2 19 degree hybrid.  Another hybrid in here too.  Irons 5-U, Ping G400.  Wedges negotiable (currently 54 degree Cleveland, 58 degree Titleist) Edel putter. 

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iacas Hall of Fame Member

iacas

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I knew you wanted more distance out of your irons, but I didn't realize your distance was this bad

Heh heh.

Seriously, does it always bend that much? If I were to take pictures of mine, would the same thing appear? Mine are much lighter shafts than yours, too.

It must. The tempo's about the same, after all.

Frames are from a Kodak Zi6 at 60 FPS, so if you shoot video of yourself hitting short punchy 7-irons, I'd be curious to see what kind of bend you see.

Erik J. Barzeski — ⛳ I knock a ball. It goes in a gopher hole. 🏌🏼‍♂️
Director of Instruction Golf Evolution • Owner, The Sand Trap .com • Author, Lowest Score Wins
Golf Digest "Best Young Teachers in America" 2016-17 & "Best in State" 2017-20 • WNY Section PGA Teacher of the Year 2019 :edel: :true_linkswear:

Check Out: New Topics | TST Blog | Golf Terms | Instructional Content | Analyzr | LSW | Instructional Droplets

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Three Putt Great Member

Three Putt

That doesn't look right? I've got the same shafts in my irons, they don't "feel" like that picture?

In the Bag...Ping Hoofer

3dx Tour Square - UST V2 HMOI X Flex
3dx 15* - X flex
Baffler DWS 20* Aldila NV Stiff 4-GW 600XC Forged Irons- S Flex 55* SW - Burner XD 60* LW - Burner XD Craz E Putter <----ProV1x---> Pellet

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Pinseeker81 Dedicated Member

Pinseeker81

That does look weird. I've never seen a shaft flex like that in all the pro slo-mo videos. What are you doing to cause that?

...the world is full of people happy to tell you that your dreams are unrealistic, that you don't have the talent to realize them. - Bob Rotella

Driver - Taylormade R1.
Fairway - Taylormade R9 15º.
Hybrid - A3OS 3 Hybrid.

Irons - Cast CCI 4-AW.

Wedge - SV Tour 56º wedge.

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HSip Well Established Member

HSip

That does look weird. I've never seen a shaft flex like that in all the pro slo-mo videos. What are you doing to cause that?

Seriously, that looks like one of those "whippy" tempo clubs.

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RC Great Member

RC

Hey Erik, that is a pretty good looking hip position in the second photo (on the right.) You are obviously clearing the hips on a less than full shot -- bravo. Also, your shortened backswing also shows a flexed and braced right knee. There is a hint of stacking, but on short shots that is not necessarily bad and is normally encouraged.

As to the photo, I don't doubt shaft flex is much greater than we think, but I have always wondered about the way various cameras build their images. If there is a scan of any kind going on, then time is not quite the same over the entire picture. I don't know the imaging device the camera uses or the exact way the image is captured -- never actually studied modern digital cameras.

Again, I don't know if this is an additional factor or not -- clueless. No doubt the shaft is strongly deflected.

RC

 

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JCDot33 Well Established Member

JCDot33

... I don't know the imaging device the camera uses or the exact way the image is captured -- never actually studied modern digital cameras ...

Modern CCD/CMOS sensors in digital still cameras work very much like good old film ... they have a light sensitive layer that reacts to light very much the same way that the silver would react on the cellulose. There is no "scan" in a still image, unlike that of a video camera ...

I am not going to thread jack with horribly boring details, but Erik's shaft flex looks like common motion blur to me so I think that it really is happening that dramatically ...
In my Bag:

Driver: Burner 10.5* Stiff shaft
3 WoodBurner 15* stiff shaft
5 WoodBurner 18* stiff ShaftHybrid3DX (18.5*)Irons: (4-LW):Putter: Rossa Indy SportBalls: Reds
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iacas Hall of Fame Member

iacas

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That does look weird. I've never seen a shaft flex like that in all the pro slo-mo videos. What are you doing to cause that?

Uhm, just hitting an 85-yard 7-iron.

Hey Erik, that is a pretty good looking hip position in the second photo (on the right.) You are obviously clearing the hips on a less than full shot -- bravo.

Actually I'm not pleased with that position at all, and it's nowhere near where that left hip needs to be. Clearing (rotating) isn't the problem for me - my problem is getting far enough forward. The "slide" part.

Also, your shortened backswing also shows a flexed and braced right knee. There is a hint of stacking, but on short shots that is not necessarily bad and is normally encouraged.

I'm not concerned about my leg - it's in the same position (roughly) as Tiger's and Hogan's full swing at that height. I wouldn't mind a bit more spine tilt to the right, but that's not something I'm working on at the moment. And compared to a big-time stack-and-tilt guy (the instructor), I'm nowhere near as left-leaning as he is.

If there is a scan of any kind going on, then time is not quite the same over the entire picture.

Don't want to belabor the point, so I'll just say that's not an issue here. Can be an issue on high shutter speeds with DSLRs, but isn't here. Update: guess I'll have to:

Modern CCD/CMOS sensors in digital still cameras work very much like good old film ... they have a light sensitive layer that reacts to light very much the same way that the silver would react on the cellulose. There is no "scan" in a still image, unlike that of a video camera ...

That's not true at all. Film and digital cameras employ two curtains, with an open slit between them that slides from top to bottom (usually), exposing the film or sensor at very slightly different times. That slit travels over the whole sensor in 1/4000 of a second or whatever the shutter speed is, but the time at the top is t=0 and the time at the bottom is t=1/4000 sec. (or whatever the shutter speed was), and you can get a little "scan" effect.

The cheaper cameras (like the video camera I used or point-and-shoot cameras that don't have true shutters) often don't have quite the same "scan" issues, because they just take constant readings and dump them all at the same time.

Erik J. Barzeski — ⛳ I knock a ball. It goes in a gopher hole. 🏌🏼‍♂️
Director of Instruction Golf Evolution • Owner, The Sand Trap .com • Author, Lowest Score Wins
Golf Digest "Best Young Teachers in America" 2016-17 & "Best in State" 2017-20 • WNY Section PGA Teacher of the Year 2019 :edel: :true_linkswear:

Check Out: New Topics | TST Blog | Golf Terms | Instructional Content | Analyzr | LSW | Instructional Droplets

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pjsnyc Great Member

pjsnyc

Kinda hard to believe. When I first saw the pic I thought it was some sort of graphite shaft on a wood or something. A cool still nonetheless! Something to show non golfers when they don't believe the amt of flex shafts can have.

:P
In the bag Nike SasQuatch SuMo 10.5* {} Tiger Shark Hammerhead 3w, 5w, 3h {} Nickent 3DX Pro 5i-PW {} Titleist Vokey 250.08* {} Cleveland CG11. 54* {} Callaway X-Tour 58.11* {} Carbite Tour Classic Putter {} Titleist ProV1x

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Pinseeker81 Dedicated Member

Pinseeker81

Sure that's not one of those medicus hinged things?
I don't think I could bend my 7 iron like that if I put it over my knee

...the world is full of people happy to tell you that your dreams are unrealistic, that you don't have the talent to realize them. - Bob Rotella

Driver - Taylormade R1.
Fairway - Taylormade R9 15º.
Hybrid - A3OS 3 Hybrid.

Irons - Cast CCI 4-AW.

Wedge - SV Tour 56º wedge.

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Shindig Incredible Member

Shindig

It must. The tempo's about the same, after all.

Alright... time to (a) dig out my digital camera and (b) get someone to take pictures.

-- Michael | My swing! 

"You think you're Jim Furyk. That's why your phone is never charged." - message from my mother

Driver:  Titleist 915D2.  4-wood:  Titleist 917F2.  Titleist TS2 19 degree hybrid.  Another hybrid in here too.  Irons 5-U, Ping G400.  Wedges negotiable (currently 54 degree Cleveland, 58 degree Titleist) Edel putter. 

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Zeph Incredible Member

Zeph

Hah, I can't make myself believe that. 85 yards with a 7 iron and enough speed to generate that much flex? No way jose!

Even with a shorter swing you should hit the ball way further than 85 yards.

Ogio Grom | Callaway X Hot Pro | Callaway X-Utility 3i | Mizuno MX-700 23º | Titleist Vokey SM 52.08, 58.12 | Mizuno MX-700 15º | Titleist 910 D2 9,5º | Scotty Cameron Newport 2 | Titleist Pro V1x and Taylormade Penta | Leupold GX-1

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JCDot33 Well Established Member

JCDot33

That's not true at all. Film and digital cameras employ two curtains, with an open slit between them that slides from top to bottom (usually), exposing the film or sensor at very slightly different times. That slit travels over the whole sensor in 1/4000 of a second or whatever the shutter speed is, but the time at the top is t=0 and the time at the bottom is t=1/4000 sec. (or whatever the shutter speed was), and you can get a little "scan" effect.

Well aware of this, these were the boring details I didn't want to get into ... and depending on the camera itself (and manufacturer) the shutter curtain travels either vertically or horizontally which will create slightly different "motion blur" effects. None, of which, happened in your image of the club ... that was all pure power right there ...

In my Bag:

Driver: Burner 10.5* Stiff shaft
3 WoodBurner 15* stiff shaft
5 WoodBurner 18* stiff ShaftHybrid3DX (18.5*)Irons: (4-LW):Putter: Rossa Indy SportBalls: Reds
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