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Unofficial Review: Dumina AutoFlex SF505X Driver Shaft


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Unofficial Review: Dumina AutoFlex SF505X Driver Shaft Long, cold winters without playing golf are dangerous for the wallet. I try to be a frugal golfer. I built my last two irons sets

Wow, I can't believe you bought one. I no longer feel so bougie for my DF 2.1 purchase, so thanks for that! If it doesn't work, at least people who know about the shaft will know you're a baller.

This (expensive) experiment has worked out well. I'm head-over-heels smitten with the AutoFlex. I've played three rounds of golf in the past week and have never driven the ball better. Arccos had

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So the "Auto Flex" name made me think of UniFlex shafts in the not too distant past ... is the general idea (without looking at their website) that a given model is supposed to "adapt" to varying swing speeds, swing tempos, transitions/deliveries, ...??

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WITB of an "aspiring"  😉 play-ah ...
..Callaway Epic Speed 4W (Project X Cypher)
..Tour Edge Exotics EXS 7W (Tensei CK Blue)
..Callaway Super Hybrid 23 (PX Catalyst) and Big Bertha 19 5H (Recoil ZTR)
..PXG 0211 6i-GW (Mitsubishi MMT) 
..Cleveland CBX2 54 and CBX 60 (both Rotex graphite)
..Evnroll ER5 (33", 385g, P2 Reflex Tour)
..all in a Datrek bag on a Bag Boy Quad XL push an MGI Zip Navigator electric cart.

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12 hours ago, cksurfdude said:

So the "Auto Flex" name made me think of UniFlex shafts in the not too distant past ... is the general idea (without looking at their website) that a given model is supposed to "adapt" to varying swing speeds, swing tempos, transitions/deliveries, ...??

TXG's initial review of the AutoFlex pretty much says that is the general idea. The company calls it "Korean Hidden Technology," but does not go into specifics about how the shaft works or is constructed (so much so that they apparently have opted not to file a patent for the technology lest it be imitated in some way).

Someone over on WRX sent the shaft off to be EI profiled, and as a static shaft it is most similar to very light "ladies" shafts.

The actual "fitting" is kind of a moving target. Initially, the SF505X was said to be for swing speeds upwards of 125 MPH, but recent charts (like the one I took from the English version of the AutoFlex website), recommend the strongest of swingers use the SF505XX.

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Unofficial WHS Handicap: 10.0 (Last Updated May 11, 2021)

Driver: callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Mavrik (9°), 45.75", Dumina AutoFlex SF505X | Unofficial AutoFlex Review
17° Hybrid:
callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Super Hybrid, 41.5", Mitsubishi MMT Hybrid 80 TX
18.5° Driving Iron: 
cobra_logo.png.190908c8b4518eec87c087429e4343ee.png Cobra KING Utility (2016 Model), 39.5", Mitsubishi MMT Utility 105 TX
21° Hybrid:
callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Epic Flash, 40", Mitsubishi MMT Hybrid 80 TX
4-AW:  
Sub70_Logo_WhtBlk.jpg.aee386374adf9afd31a02b989c839f9d.jpg Sub70 699 (4-6)/699 Pro (7-AW) Combo Set, 1° Flat, 37" 7 Iron, Mitsubishi MMT Taper 105 TX | Build Thread
54°, 58°:
cobra_logo.png.190908c8b4518eec87c087429e4343ee.png Cobra KING MIM Black, 1° Flat, 35.5", 35.25", Mitsubishi MMT Wedge 105 TX | #CobraConnect Review
Putter:
image.png.49fcc172a1ed0010d930fbe1c5dc8b79.png L.A.B. Golf DF 2.1, 36", 68°, Black with Custom Sightlines, BGT Stability Tour, L.A.B. Press II 3° | Unofficial Review
Grips: 
lamkin.png.5081890e009ae78e16066ee0fd18b7c0.png Lamkin Sonar Tour
Ball: :Snell:Snell MTB-X Optic Yellow

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Bag: :1590477705_SunMountain: Personalized 2020 Sun Mountain Sync
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^ Interesting, thx!

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WITB of an "aspiring"  😉 play-ah ...
..Callaway Epic Speed 4W (Project X Cypher)
..Tour Edge Exotics EXS 7W (Tensei CK Blue)
..Callaway Super Hybrid 23 (PX Catalyst) and Big Bertha 19 5H (Recoil ZTR)
..PXG 0211 6i-GW (Mitsubishi MMT) 
..Cleveland CBX2 54 and CBX 60 (both Rotex graphite)
..Evnroll ER5 (33", 385g, P2 Reflex Tour)
..all in a Datrek bag on a Bag Boy Quad XL push an MGI Zip Navigator electric cart.

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I spent some more time with the AutoFlex outside yesterday swinging without a ball. I hit 124 MPH on the radar once, and saw several 122 MPH readings without feeling like I was swinging uncontrolled/"out of my shoes."

If I remember correctly, the highest no ball reading I saw with a driver throughout the winter was 126 MPH once. Speed has actually been trending slightly downward over the past few weeks, and I hadn't seen anything that close to 122 MPH in a while. 

Looking at our weather report, my range might actually open this week yet! Fingers crossed.

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Unofficial WHS Handicap: 10.0 (Last Updated May 11, 2021)

Driver: callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Mavrik (9°), 45.75", Dumina AutoFlex SF505X | Unofficial AutoFlex Review
17° Hybrid:
callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Super Hybrid, 41.5", Mitsubishi MMT Hybrid 80 TX
18.5° Driving Iron: 
cobra_logo.png.190908c8b4518eec87c087429e4343ee.png Cobra KING Utility (2016 Model), 39.5", Mitsubishi MMT Utility 105 TX
21° Hybrid:
callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Epic Flash, 40", Mitsubishi MMT Hybrid 80 TX
4-AW:  
Sub70_Logo_WhtBlk.jpg.aee386374adf9afd31a02b989c839f9d.jpg Sub70 699 (4-6)/699 Pro (7-AW) Combo Set, 1° Flat, 37" 7 Iron, Mitsubishi MMT Taper 105 TX | Build Thread
54°, 58°:
cobra_logo.png.190908c8b4518eec87c087429e4343ee.png Cobra KING MIM Black, 1° Flat, 35.5", 35.25", Mitsubishi MMT Wedge 105 TX | #CobraConnect Review
Putter:
image.png.49fcc172a1ed0010d930fbe1c5dc8b79.png L.A.B. Golf DF 2.1, 36", 68°, Black with Custom Sightlines, BGT Stability Tour, L.A.B. Press II 3° | Unofficial Review
Grips: 
lamkin.png.5081890e009ae78e16066ee0fd18b7c0.png Lamkin Sonar Tour
Ball: :Snell:Snell MTB-X Optic Yellow

Tracked By: :Arccos: Arccos | #CobraConnect Review
Bag: :1590477705_SunMountain: Personalized 2020 Sun Mountain Sync
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WITB? | 2020 Participant #CobraConnect Challenge | 2019 Reviewer Callaway Epic Flash Driver

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I had no idea their shafts were that light. Interesting! Looking forward to following to see how it works for you!

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Driver: :cobra-small: King F9 Speedback, Xphlexxx Busa 2 Liquid, XX stiff, 45”

Fwy: 

Hybrid: :callaway-small: X2 Hot Pro, 20*, :Fuji: Rombax 8D07HB TM27 X

Irons: :honma:TR20 Tour P 4/5, Tour V 6-10, Dynamic Gold X100

Wedges: Vega VW-06 50*/54*/58*, Dynamic Gold S400

Putter:  :edel-golf-1: EAS 1.0

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Looking forward to following!  I'm wondering how many of these we will see on tour.  Adam Scott was the first, but I am sure will not be the last.  

Do you have a way that you might be able to determine if dispersion is the same or improved?  

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Driver:  image.png.3c6db1120d888f669e07d4a8f890b3f1.pngMavrik Sub Zero 9* (Set to 10) Ventus Blue 6X

2 Hybrid: :titelist-small: 818 H2 Hybrid Tensei Blue 80 X

3 Hybrid: :titelist-small: 818H2 Fujikura Atmos TS Blue 8X

4 Iron - Srixon ZX 23* Recoil F5

Irons 5-PW: :mizuno-small: MP 18 SC Dynamic Gold AMT X

Gap/Sand Wedge:  :titelist-small: Vokey SM6 49*  SM8 54* 

Lob Wedge:  image.png.3c6db1120d888f669e07d4a8f890b3f1.pngJaws 5 Wedge 58* DG Tour Issue Stiff

Putter:  image.png.cca2328f4144a299c795aa9b8f3bf677.png Inovai 6.0              :scotty-small: Pro Platinum Newport 2 35"  

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8 minutes ago, juspoole said:

Do you have a way that you might be able to determine if dispersion is the same or improved?  

I hit a pretty consistent 40-45 percent of fairways over the past two seasons, but that includes irons off tee/etc. Even with Arccos I can't say I have a great way to track dispersion. Might need to rent some time on my coach's Trackman just to compare the two setups on a single day type of thing.

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Unofficial WHS Handicap: 10.0 (Last Updated May 11, 2021)

Driver: callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Mavrik (9°), 45.75", Dumina AutoFlex SF505X | Unofficial AutoFlex Review
17° Hybrid:
callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Super Hybrid, 41.5", Mitsubishi MMT Hybrid 80 TX
18.5° Driving Iron: 
cobra_logo.png.190908c8b4518eec87c087429e4343ee.png Cobra KING Utility (2016 Model), 39.5", Mitsubishi MMT Utility 105 TX
21° Hybrid:
callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Epic Flash, 40", Mitsubishi MMT Hybrid 80 TX
4-AW:  
Sub70_Logo_WhtBlk.jpg.aee386374adf9afd31a02b989c839f9d.jpg Sub70 699 (4-6)/699 Pro (7-AW) Combo Set, 1° Flat, 37" 7 Iron, Mitsubishi MMT Taper 105 TX | Build Thread
54°, 58°:
cobra_logo.png.190908c8b4518eec87c087429e4343ee.png Cobra KING MIM Black, 1° Flat, 35.5", 35.25", Mitsubishi MMT Wedge 105 TX | #CobraConnect Review
Putter:
image.png.49fcc172a1ed0010d930fbe1c5dc8b79.png L.A.B. Golf DF 2.1, 36", 68°, Black with Custom Sightlines, BGT Stability Tour, L.A.B. Press II 3° | Unofficial Review
Grips: 
lamkin.png.5081890e009ae78e16066ee0fd18b7c0.png Lamkin Sonar Tour
Ball: :Snell:Snell MTB-X Optic Yellow

Tracked By: :Arccos: Arccos | #CobraConnect Review
Bag: :1590477705_SunMountain: Personalized 2020 Sun Mountain Sync
Riding On: :CaddyTek: CaddyTek Caddylite EZ V8 | Unofficial Review

WITB? | 2020 Participant #CobraConnect Challenge | 2019 Reviewer Callaway Epic Flash Driver

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Well this should be an interesting follow.  Still a lot of mystery behind the Autoflex.  

I'm interested to see if your ball speed goes up even if swing speed goes up with the lighter head.  Hopefully that forecast holds and you can hit some balls outside this week.

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2 hours ago, B.Boston said:

Well this should be an interesting follow.  Still a lot of mystery behind the Autoflex.  

I'm interested to see if your ball speed goes up even if swing speed goes up with the lighter head.  Hopefully that forecast holds and you can hit some balls outside this week.

Regarding ball speed vs. head weight, I found some pretty interesting testing done at this blog: http://0to300golf.blogspot.com/2019/04/testing-driver-head-weights-part-2.html

They had best results when matching a lighter head with a reasonable swingweight (D2), which is what the Dumina chart implies.

I went back and watched the original TXG video last night and Matt seemed to have significantly more success with his Mavrik SZ head than the G410LST, which was a lot heavier than the Mavrik. My hypothesis is that the AutoFlex needs a truly lighter swingweight and not a "tricked" swingweight with a heavy grip or counterbalance weight. It seems the most successful people I've seen play a lighter head. Some people on the Facebook forum have had good results with XXIO drivers, and Gabe Gallucci on YouTube had the most success with lighter weights in his Mavrik SZ as well, which brought the headweight down into the 180s.

I could drop the 2 gram weight and get down below D1 if I wanted to give that a shot as well. Anything "lighter" on the scale would mean shaving more off of the shaft, which I'd really rather not do.

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Unofficial WHS Handicap: 10.0 (Last Updated May 11, 2021)

Driver: callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Mavrik (9°), 45.75", Dumina AutoFlex SF505X | Unofficial AutoFlex Review
17° Hybrid:
callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Super Hybrid, 41.5", Mitsubishi MMT Hybrid 80 TX
18.5° Driving Iron: 
cobra_logo.png.190908c8b4518eec87c087429e4343ee.png Cobra KING Utility (2016 Model), 39.5", Mitsubishi MMT Utility 105 TX
21° Hybrid:
callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Epic Flash, 40", Mitsubishi MMT Hybrid 80 TX
4-AW:  
Sub70_Logo_WhtBlk.jpg.aee386374adf9afd31a02b989c839f9d.jpg Sub70 699 (4-6)/699 Pro (7-AW) Combo Set, 1° Flat, 37" 7 Iron, Mitsubishi MMT Taper 105 TX | Build Thread
54°, 58°:
cobra_logo.png.190908c8b4518eec87c087429e4343ee.png Cobra KING MIM Black, 1° Flat, 35.5", 35.25", Mitsubishi MMT Wedge 105 TX | #CobraConnect Review
Putter:
image.png.49fcc172a1ed0010d930fbe1c5dc8b79.png L.A.B. Golf DF 2.1, 36", 68°, Black with Custom Sightlines, BGT Stability Tour, L.A.B. Press II 3° | Unofficial Review
Grips: 
lamkin.png.5081890e009ae78e16066ee0fd18b7c0.png Lamkin Sonar Tour
Ball: :Snell:Snell MTB-X Optic Yellow

Tracked By: :Arccos: Arccos | #CobraConnect Review
Bag: :1590477705_SunMountain: Personalized 2020 Sun Mountain Sync
Riding On: :CaddyTek: CaddyTek Caddylite EZ V8 | Unofficial Review

WITB? | 2020 Participant #CobraConnect Challenge | 2019 Reviewer Callaway Epic Flash Driver

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5 minutes ago, edingc said:

Regarding ball speed vs. head weight, I found some pretty interesting testing done at this blog: http://0to300golf.blogspot.com/2019/04/testing-driver-head-weights-part-2.html

They had best results when matching a lighter head with a reasonable swingweight (D2), which is what the Dumina chart implies.

I went back and watched the original TXG video last night and Matt seemed to have significantly more success with his Mavrik SZ head than the G410LST, which was a lot heavier than the Mavrik. My hypothesis is that the AutoFlex needs a truly lighter swingweight and not a "tricked" swingweight with a heavy grip or counterbalance weight. It seems the most successful people I've seen play a lighter head. Some people on the Facebook forum have had good results with XXIO drivers, and Gabe Gallucci on YouTube had the most success with lighter weights in his Mavrik SZ as well, which brought the headweight down into the 180s.

I could drop the 2 gram weight and get down below D1 if I wanted to give that a shot as well. Anything "lighter" on the scale would mean shaving more off of the shaft, which I'd really rather not do.

I think the TXG boys also said that heavier head weight has become less of an advantage now that I think about it. OEMs are getting better with face tech to keep ball speeds up. 
 

I have to agree with you that it’s a combo of the swing and real weight that seems to make the autoflex work. 

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:cobra-small: KING Forged Tec 5-GW - Nippon Modus 120x | :cobra-small: KING MIM Black 52.12C, 56.10V, 60.04W - Nippon Modus 125 Wedge

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I can’t wait to see your range and then on course results!

Thanks for doing this test.


Sent from my iPhone using MyGolfSpy

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Ping G410 - turned down to11.25 degrees, neutral setting - Fujikura Motore X R flex

Ping G410 5-9 wood

Wilson D7 forged 6-GW -  Mamiya recoil 460 R flex

SCOR 52,60

EVNRoll ER 5

Titleist Pro VIx optic yellow with revkev stamped on them

Currently testing Edison wedges to replace SCORS that are wearing out. Also auditions for the 14th spot in the bag.  Current possibilities are a Ping 26 degree hybrid - duplicates the 9 wood or 5 iron but would be used almost exclusively for chipping or Tour Exotics 3 wood simply because you can carry 14 clubs and I might occasionally hit it in certain unusual wind conditions once every four or five rounds. 

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Quite an interesting first day on the range with the AutoFlex. A very whip-like feel everywhere but at impact. Such an odd shaft.

Not surprisingly, the AutoFlex didn't magically make me drive the ball like Bryson. Even though the shaft is only 1/2" longer than the Rogue White, it took a bit to adjust to the longer length. I tend to struggle with balance and setup, getting too bent from the hips at address. That kind of bent-over setup can cause me to stand up through impact, and it gets worse the longer the club. You'll see me try to get taller at address as the shots go on, and that's something I need to work on if my driver is going to improve.

I'm sure setup accounted for some of this today, but I didn't hit the center of the club face much. I heeled a lot of shots, hit a lot of others low in the face and had one or two that almost missed the face altogether. It seemed a bit hard to find a groove with the AutoFlex. But, it was my second range session of the year and tough to tell for sure what was the cause.

Numbers-wise, I didn't see much change. Over 19 shots, the AutoFlex was comparable to my Rogue White numbers from Friday (differences highlighted):

Ball Speed

Club Speed

Smash

Carry

Launch

Spin

Height (ft)

Time

158.8 (-1.4)

111.5 (+2.3)

1.42 (-0.05)

256.5 (-3.5)

N/A

2,540 (-100)

N/A

N/A

The numbers are from two different ranges and two different mixes of range balls. The difference in elevations between ranges mess with the Mevo readings for launch, height and time so I've removed them. I'm not sure how much faith to put in these numbers this early.

The low-faced hits has me thinking the AutoFlex is deflecting a lot coming into impact. The majority of my shots today launched very high.  The next time out I will loft the Mavrik down to eight degrees. Also, near the end of the session I switched to my tallest tee (2.5" above ground, 4" total), and that helped center the ball vertically on the face.

Quite a few balls visibly had too much spin, but I would guess hitting them low on the head was the cause of that. I middled the last shot in the video and crushed it.

I can't say the AutoFlex was any better or worse than the Rogue White in regards to dispersion. My good shots are slight draws, awful shots are duck hooks or high and right. Those misses have been consistent all winter through four different driver/shaft combinations.

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Unofficial WHS Handicap: 10.0 (Last Updated May 11, 2021)

Driver: callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Mavrik (9°), 45.75", Dumina AutoFlex SF505X | Unofficial AutoFlex Review
17° Hybrid:
callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Super Hybrid, 41.5", Mitsubishi MMT Hybrid 80 TX
18.5° Driving Iron: 
cobra_logo.png.190908c8b4518eec87c087429e4343ee.png Cobra KING Utility (2016 Model), 39.5", Mitsubishi MMT Utility 105 TX
21° Hybrid:
callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Epic Flash, 40", Mitsubishi MMT Hybrid 80 TX
4-AW:  
Sub70_Logo_WhtBlk.jpg.aee386374adf9afd31a02b989c839f9d.jpg Sub70 699 (4-6)/699 Pro (7-AW) Combo Set, 1° Flat, 37" 7 Iron, Mitsubishi MMT Taper 105 TX | Build Thread
54°, 58°:
cobra_logo.png.190908c8b4518eec87c087429e4343ee.png Cobra KING MIM Black, 1° Flat, 35.5", 35.25", Mitsubishi MMT Wedge 105 TX | #CobraConnect Review
Putter:
image.png.49fcc172a1ed0010d930fbe1c5dc8b79.png L.A.B. Golf DF 2.1, 36", 68°, Black with Custom Sightlines, BGT Stability Tour, L.A.B. Press II 3° | Unofficial Review
Grips: 
lamkin.png.5081890e009ae78e16066ee0fd18b7c0.png Lamkin Sonar Tour
Ball: :Snell:Snell MTB-X Optic Yellow

Tracked By: :Arccos: Arccos | #CobraConnect Review
Bag: :1590477705_SunMountain: Personalized 2020 Sun Mountain Sync
Riding On: :CaddyTek: CaddyTek Caddylite EZ V8 | Unofficial Review

WITB? | 2020 Participant #CobraConnect Challenge | 2019 Reviewer Callaway Epic Flash Driver

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Looking forward to your continued updates. I think I can speak for a lot of us that we had hoped to read about a miraculous improvement.

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:callaway-small: Epic Flash Sub Zero, 9°, Aldila Rogue White 130 MSI 70 X
:callaway-small: Mavrik Sub Zero 15°, Aldila Rogue White 130 MSI 70 S
:cobra-small: F6 5-6W, 18.5°, Fujikura Motore 6.3
:adams-small: XTD Proto dHy 21°, Aldila Green NV Hybrid 105 S
:Sub70: 699 Pro, Modus3 105, 5–PW
:Sub70: Forged Black 50°, 54°, and 58°
:odyssey-small: Stroke Lab EXO Seven Mini, 34"
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37 minutes ago, GolfSpy MPR said:

Looking forward to your continued updates. I think I can speak for a lot of us that we had hoped to read about a miraculous improvement.

Certainly always looking for magic in a bottle, so to speak.

In rewatching my clip, I did notice the majority of my best shots came near the end of the bucket after making the tee change and after getting more used to the feel of the shaft. That has me excited to get out there again, hopefully Friday. I have a round scheduled for Saturday morning again, too. The AutoFlex will get put through its paces.

Your comment on "miraculous improvement" does lead me down a rabbit hole. What kind of changes do I need to see to somehow say an $800 shaft is worth the price tag? How can I quantify that? With something like my L.A.B. putter, I saw immediate changes to my scoring and distance control. In cycling through three or four drivers in two years, I can't say I've gotten a ton better outside of any improvements I've made from lessons and good 'ol practice.

One thought that did cross my mind is how I react to a lighter shaft later in rounds. During my first round of the season I drove the ball really well on the front nine. But, as I tired, the driver started to get very squirrelly on the back nine. Will switching to a shaft that is something like 10 grams lighter than the Rogue White help out there?

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Unofficial WHS Handicap: 10.0 (Last Updated May 11, 2021)

Driver: callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Mavrik (9°), 45.75", Dumina AutoFlex SF505X | Unofficial AutoFlex Review
17° Hybrid:
callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Super Hybrid, 41.5", Mitsubishi MMT Hybrid 80 TX
18.5° Driving Iron: 
cobra_logo.png.190908c8b4518eec87c087429e4343ee.png Cobra KING Utility (2016 Model), 39.5", Mitsubishi MMT Utility 105 TX
21° Hybrid:
callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Epic Flash, 40", Mitsubishi MMT Hybrid 80 TX
4-AW:  
Sub70_Logo_WhtBlk.jpg.aee386374adf9afd31a02b989c839f9d.jpg Sub70 699 (4-6)/699 Pro (7-AW) Combo Set, 1° Flat, 37" 7 Iron, Mitsubishi MMT Taper 105 TX | Build Thread
54°, 58°:
cobra_logo.png.190908c8b4518eec87c087429e4343ee.png Cobra KING MIM Black, 1° Flat, 35.5", 35.25", Mitsubishi MMT Wedge 105 TX | #CobraConnect Review
Putter:
image.png.49fcc172a1ed0010d930fbe1c5dc8b79.png L.A.B. Golf DF 2.1, 36", 68°, Black with Custom Sightlines, BGT Stability Tour, L.A.B. Press II 3° | Unofficial Review
Grips: 
lamkin.png.5081890e009ae78e16066ee0fd18b7c0.png Lamkin Sonar Tour
Ball: :Snell:Snell MTB-X Optic Yellow

Tracked By: :Arccos: Arccos | #CobraConnect Review
Bag: :1590477705_SunMountain: Personalized 2020 Sun Mountain Sync
Riding On: :CaddyTek: CaddyTek Caddylite EZ V8 | Unofficial Review

WITB? | 2020 Participant #CobraConnect Challenge | 2019 Reviewer Callaway Epic Flash Driver

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like i told you in the other thread, i had the opportunity to hit the 505XX with a sim2 head. 

like you, i had trouble centering the ball with the shaft playing 1.5” longer than my gamer. my sample size was small, only 5 or 6 shots, but i’m cautiously optimistic about what the shaft can do. 

my swing speed was up 2-3mph over what i was seeing with my gamer that day. i actually saw 140+ with the autoflex. and ball speed retention on poor strikes was awesome. i was missing high and toe side and was still seeing ball speeds in the high 180s and low 190s. 

the few swings i took launched the ball to the moon. now that could be strike location as much as anything else, but it was half a dozen consecutive shots that went way too high to even be considered playable. they carried decently, but that was in perfect conditions on a sim. on the course 170+ feet in the air with wind i likely would’ve seen that ball come up 40+ yards short. 

like i said...too small a sample size to make a definitive statement but extremely interesting none the less. 

i can’t wait to see your thoughts as you continue to try it out. 

  • Like 3

:taylormade-small: SIM2 8º | KuroKage XT 70TX
:taylormade-small: SIM 3W 14º | Fujikura Atmos Black Tour Spec 9TX
:titelist-small: U500 2i | Fujikura Ventus HB Black 10TX
:titelist-small: T100 4-PW | Dynamic Gold X7
::vokey-small: SM6 52* SM8 56* SM8 60* | Dynamic Gold Tour Issue X100
:scotty-small:  Futura 5w

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I was able to get out on the range yesterday afternoon after my lesson. Following a lesson is likely the worst time to evaluate a new club/shaft, but I was eager to hit the AutoFlex again.

The session went much the same way as my first, with an impact pattern all over the face. My average club speed shot up to 113 (warm and loose from the lesson), but my efficiency was terrible (1.4) with an average ball speed of 158.3. Disappointing numbers. I know range balls vary and don't produce the same ball speed as a premium ball. But, I've been tracking my driver all winter and a range ball speed of 158.3 isn't above my average.

Heel hits filled the majority of both early sessions. Low heel used to be my miss, but I haven't seen consistent contact there in quite some time. 

To be fair to the AutoFlex, the Facebook users group implies very few people will have "plug and play" success. Many members mentioned they likely wouldn't have chosen the AutoFlex based on a single fitting or testing session. Several experimented with different weights and hosel settings before finding a working combination.

I re-installed the stock five gram weight in the Mavrik last night. The extra three grams moved the swingweight from D1.5 to D2.5. I am now above the range recommended by Dumina, but back to what I had with the stock Aldila Rogue White.

I was back out on the range during lunch today and had much better results with the stock weight installed. I also switched back to my lower tee. I still missed a few low heel, and a couple high middle/toe, but I hit a ton more out of the near middle than I did on the first two days.

IMG_19032021_145957_(1280_x_960_pixel).jpg.00436ffaf9a1fb658024b1033e1c90ee.jpg

Getting the contact location squared away made the AutoFlex shine. I averaged 112 MPH swing speed and 162.7 MPH ball speed over my 38 shots. 

I am finding you cannot rush with the AutoFlex. I found the most success feeling a long and smooth takeaway before allowing myself to be violent through the ball. My worst shots came from ripping the club back too fast on the back swing.

I hit two blocks of about 20 drivers each. The first block was good, but the second block was amazing. Over my last six shots I averaged 165 MPH ball speed (max 167.9) and 111.6 MPH club speed (max 113.9). Launch and spin fell in acceptable ranges, and I was right around 90-100 feet peak height.

  • Like 9

Unofficial WHS Handicap: 10.0 (Last Updated May 11, 2021)

Driver: callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Mavrik (9°), 45.75", Dumina AutoFlex SF505X | Unofficial AutoFlex Review
17° Hybrid:
callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Super Hybrid, 41.5", Mitsubishi MMT Hybrid 80 TX
18.5° Driving Iron: 
cobra_logo.png.190908c8b4518eec87c087429e4343ee.png Cobra KING Utility (2016 Model), 39.5", Mitsubishi MMT Utility 105 TX
21° Hybrid:
callaway_logo.png.3dd18aa65544000dd0ea3901697a8261.png Callaway Epic Flash, 40", Mitsubishi MMT Hybrid 80 TX
4-AW:  
Sub70_Logo_WhtBlk.jpg.aee386374adf9afd31a02b989c839f9d.jpg Sub70 699 (4-6)/699 Pro (7-AW) Combo Set, 1° Flat, 37" 7 Iron, Mitsubishi MMT Taper 105 TX | Build Thread
54°, 58°:
cobra_logo.png.190908c8b4518eec87c087429e4343ee.png Cobra KING MIM Black, 1° Flat, 35.5", 35.25", Mitsubishi MMT Wedge 105 TX | #CobraConnect Review
Putter:
image.png.49fcc172a1ed0010d930fbe1c5dc8b79.png L.A.B. Golf DF 2.1, 36", 68°, Black with Custom Sightlines, BGT Stability Tour, L.A.B. Press II 3° | Unofficial Review
Grips: 
lamkin.png.5081890e009ae78e16066ee0fd18b7c0.png Lamkin Sonar Tour
Ball: :Snell:Snell MTB-X Optic Yellow

Tracked By: :Arccos: Arccos | #CobraConnect Review
Bag: :1590477705_SunMountain: Personalized 2020 Sun Mountain Sync
Riding On: :CaddyTek: CaddyTek Caddylite EZ V8 | Unofficial Review

WITB? | 2020 Participant #CobraConnect Challenge | 2019 Reviewer Callaway Epic Flash Driver

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Wow! Looks like your determination is paying off 👍👍👍

  • Like 1

WITB of an "aspiring"  😉 play-ah ...
..Callaway Epic Speed 4W (Project X Cypher)
..Tour Edge Exotics EXS 7W (Tensei CK Blue)
..Callaway Super Hybrid 23 (PX Catalyst) and Big Bertha 19 5H (Recoil ZTR)
..PXG 0211 6i-GW (Mitsubishi MMT) 
..Cleveland CBX2 54 and CBX 60 (both Rotex graphite)
..Evnroll ER5 (33", 385g, P2 Reflex Tour)
..all in a Datrek bag on a Bag Boy Quad XL push an MGI Zip Navigator electric cart.

Forum Member tester for the ExPutt Putting Simulator

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Glad it is working for you so far. any more testing with it lately? 

  • Like 1

WITB:

Driver:   :taylormade-small: SIM2 Max 12° - Accra TZ6 M4

FW Wood:    :cobra-small: F7 17.5° - Fujikura Pro

Utility:    :cobra-small: King Forged 20.5° Utility - Catalyst X

Irons:   image.png.cbfb2d938ea45d82004d9bdeb23cf643.pngD7 Forged GW-5i - Recoils

Wedges:   :callaway-small:  Mac Daddy Forged 52° , 56°

Putter:   :taylormade-small: MySpider X

Cart: image.png.5aa5e9b8c0d6e08a2b12be76a06a07ca.pngOnewheel XR+

 

 

 

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