Using EI profiles

[bens197]

Anyone here rely upon or reference EI profiles when selecting a proper match?

[GolfSpy_APH]

I have referenced them, but can't say I heavily rely on them.

[Owengeorge13]

I tried going down that rabbit hole before.  You can get lost in it…

Just get fit.

[bens197]

8 minutes ago, Owengeorge13 said:

I tried going down that rabbit hole before.  You can get lost in it…

Just get fit.

Fitting is almost always the answer. For those who’ve got a strong grasp on their game I’m interested to learn how they’ve referenced or benefitted from utilizing them in the process. 

[funkyjudge]

1 hour ago, bens197 said:

Anyone here rely upon or reference EI profiles when selecting a proper match?

Yes, the shafts’ EI curves is one of the factors that I use as a Professional Clubfitter in weeding out shafts that will absolutely not be a decent fit for the golfer. A golfer’s tempo, approach angle, angle of attack, launch angle, etc. will provide solid clues regarding what shaft profiles will not work for that unique swing, and will help to narrow the field of shafts to focus on in the fitting. The key is that the fitter MUST NOT be too “selective”, thus eliminating any shafts that may potentially work for the golfer.

Edited February 18 by funkyjudge

[Shrek74]

Unless I'm looking in the wrong area, getting EI profiles isn't really available without paying subscription fees to certain websites.

I'd love to have access to all EI profiles, especially before a fitting. If I know what's been working, I can scan the profiles for others similar beforehand to help trim down what I might ask about.

I'm also a nerd, so stuff like this is pretty cool to me.

Sent from my SM-N986U1 using Tapatalk

[bens197]

34 minutes ago, funkyjudge said:

Yes, the shafts’ EI curves is one of the factors that I use as a Professional Clubfitter in weeding out shafts that will absolutely not be a decent fit for the golfer. A golfer’s tempo, approach angle, angle of attack, launch angle, etc. will provide solid clues regarding what shaft profiles will not work for that unique swing, and will help to narrow the field of shafts to focus on in the fitting. The key is that the fitter MUST NOT be too “selective”, thus eliminating any shafts that may potentially work for the golfer.

This makes good sense. Thank you!

[funkyjudge]

3 hours ago, Shrek74 said:

Unless I'm looking in the wrong area, getting EI profiles isn't really available without paying subscription fees to certain websites.

I'd love to have access to all EI profiles, especially before a fitting. If I know what's been working, I can scan the profiles for others similar beforehand to help trim down what I might ask about.

I'm also a nerd, so stuff like this is pretty cool to me.

Sent from my SM-N986U1 using Tapatalk
 

I perform my own EI shaft profiling, using a calibrated profiling weight that slides up and down the shaft and uses a thumb screw to lock it down at the appropriate points along the shaft, and a frequency analyzer.

[bens197]

13 hours ago, funkyjudge said:

I perform my own EI shaft profiling, using a calibrated profiling weight that slides up and down the shaft and uses a thumb screw to lock it down at the appropriate points along the shaft, and a frequency analyzer.

And I'd like to assume since you made it, it allows you to understand and then communicate each result fluently.  

[RickyBobby_PR]

17 hours ago, funkyjudge said:

Yes, the shafts’ EI curves is one of the factors that I use as a Professional Clubfitter in weeding out shafts that will absolutely not be a decent fit for the golfer. A golfer’s tempo, approach angle, angle of attack, launch angle, etc. will provide solid clues regarding what shaft profiles will not work for that unique swing, and will help to narrow the field of shafts to focus on in the fitting. The key is that the fitter MUST NOT be too “selective”, thus eliminating any shafts that may potentially work for the golfer.

This.

For the bolded part some fitters I know will go to the extreme on both ends of weight and/or stiffness profile to get the golfers thoughts and then work with that feedback to decide where to do start with shaft selection and maybe throw in some other shafts to see how the feel changes for the golfer.

 

[funkyjudge]

26 minutes ago, bens197 said:

And I'd like to assume since you made it, it allows you to understand and then communicate each result fluently.  

I hope so; that is my aim!

[funkyjudge]

1 hour ago, RickyBobby_PR said:

This.

For the bolded part some fitters I know will go to the extreme on both ends of weight and/or stiffness profile to get the golfers thoughts and then work with that feedback to decide where to do start with shaft selection and maybe throw in some other shafts to see how the feel changes for the golfer.

 

In the initial stage of the shaft fitting process, I may include a couple of shafts at (or more likely NEAR) the extremes, to see what effects those shafts have on the golfer. However, I do not include too much of this, because I don't want to wear the golfer out hitting shafts that are almost certainly not going to be candidates for that golfer in the end.

Edited February 19 by funkyjudge

[Hoyoymac]

Have been very interested in shaft EI curves for the past few years.

Wanted to try and understand why certain shafts performed well for me.   Also was trying to figure out why others did not work well despite manufacturer’s descriptions that indicated that they should have.

Unfortunately the number of shaft manufacturers that provide EI charts to the public has shrunk.  

About, the only way to get much information now is to pay a fee to third party shaft reviewers/testers. The full data comes at a higher fee. For a dedicated fitting business the fees are justifiable.  Not so much for an individual.

The other problem with EI curves is that when they are published they rarely have the scale indicated and so it is hard to compare charts for two different shafts unless they are all shown together on the same graph.  Which makes it hard to compare different manufacturer’s products.

Even with better knowledge of what profile might work for me it is not foolproof.  

A fitting is a good way to narrow things down quickly but it is just a snapshot in time of a few dozen swings.  

The only way to know for sure is to actually hit it and see if it works over multiple rounds of golf for your swing and club delivery to deliver the optimal results, consistency and feel that you are looking for.

[RickyBobby_PR]

56 minutes ago, Hoyoymac said:

About, the only way to get much information now is to pay a fee to third party shaft reviewers/testers. The full data comes at a higher fee. For a dedicated fitting business the fees are justifiable.  Not so much for an individual.

Golfshaftsreview has a service that used to be $10/mo.

A lot of good fitters will do their own testing/measuring of the shaft to gather data for their use rather than pay for info.

The graphs are nice to see but really don’t tell much. As you said hitting a shaft and seeing how it feels and how that feel translates into performance is the best way. Some can figure it out with hitting balls on the range but a fitter will be quicker. The problem I see with those who tests on the range is most will hit a bunch of balls in a row and will start changing their swing to find a way to make the shaft work. A fitter is only going to have the golfer take 1-5 swings with any setup to avoid that adjustment by the golfer.

im guilty of this sometimes when testing shafts. I have to remind myself to take a few swings and hit something else then come back

[Hoyoymac]

I’m a subscriber to Russ Ryden’s golf shaft review site and have learned a lot from it.  But, to get his software and the complete data set is quite a bit more expensive.

He also is kind of streaky.  Doesn’t post a ton of reviews and some shaft brands he doesn’t review at all.

But it is better than most.

Cool Clubs S3 Technology has great information that you used to could access but you can’t really get it anymore unless you are one of their clients.