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sportsnut

Question about swing speed and Shaft Flex!!

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Flex RSSR(mph)* Profile WT (Gr) Tip Dia. Butt Dia. Length
A/R (A) 60-70 115 .370" .600" 43"
A/R (R) 65-75 115 .370" .600" 43"
S/X (S) 75-85 115 .370" .600" 43"
S/X (X) 80-90 115 .370" .600" 43"


* Recommended Swing Speed Range (No. 1 Wood; No. 5 Iron). When ranges overlap-choose a more flexible shaft for distance - a stiffer shaft for accuracy.

Okay anyone more technical than me (not a big leap here to know more than me) know about this. I find this info confusing. If my swing speed is 90 with a driver  why does that put me in x-stiff flex on this chart, reconsidering my bag after a fitting, but looking for more info.

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Judging by the listed weight of 115 grams and length of 43", these are iron shafts.  Thus the swing speed (RSSR) would be for your 5 iron, not your driver.  At a 90 mph driver swing, you would be an R at most.

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Also, i am hesitant to actually have swing speed as the determinant for how stiff a flex is. That's kinda a general idea. But a X-stiff shaft can have a high, medium, and low trajectory depending on kick point and how stiff the shaft is at the tip of the club. In general a X-stiff shaff will lower the ball flight, but it can vary greatly between the different X-stiff shafts, even stiff shafts can have X-stiff properties. Also, x-stiff from one company isn't the same for another.

I am also thinking that tempo might play a part in this. Someone like Freddy Couples or Ernie Els might use a less stiff shaft because there swings are smoother, but you take a Tiger woods, who has a very aggressive motion, that might require a stiffer flex. To me, the initial transition between the back swing and downswing might be a good indicator for they of overall flex. A person like Freddie might load the golf shaft with a ton of energy but does so in a gradual fashion, while tiger loads it very fast at the top of the backswing and maintains it through impact. So in Tiger might need a golf shaft that responds to his swing characteristics not his swing speed. This is just theory, but i think it makes sense.

So the point, go to a demo day or trackman and try out as many golf shaft variations as possible and see which ones work the best.

I have played a V2 extra stiff shaft, then switched to a Stiff Diamana, i like the stiff flex better. But my driver swing speed would classify for X-stiff

As for Iron flex, i would check out online shaft fitters, they give you a general idea. Like Project X has a good one, and so does True Temper. I am a personal fan of frequency matching myself. I think it really helps even out the flexes through out the set and gives a more consistant feel and ball flight.

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I have no clue where you got this but at 43" that would not be a five iron length. Plus this is just a general listing of speed/flex ratings. There are so many variables here it will take an actual fitting to determine what flex you should be in for a driver and irons. Shaft manufactures do not have standard flex ratings and one mfg R flex may be another ones senior or stiff flex. Plus someone with a 90MPH swing speed may in fact be better suited for a normal senior flex or a firm R flex depending on the type of swing they have to achieve that 90 MPH swing. I hope this does not confuse the issue for you but probably will.

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Originally Posted by shanksalot

I have no clue where you got this but at 43" that would not be a five iron length. Plus this is just a general listing of speed/flex ratings. There are so many variables here it will take an actual fitting to determine what flex you should be in for a driver and irons. Shaft manufactures do not have standard flex ratings and one mfg R flex may be another ones senior or stiff flex. Plus someone with a 90MPH swing speed may in fact be better suited for a normal senior flex or a firm R flex depending on the type of swing they have to achieve that 90 MPH swing. I hope this does not confuse the issue for you but probably will.


43" is the raw (uncut) shaft length, as listed in most golf component catalogs.

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You are right when I started talking 90 MPH my mind went to wood shafts instead of iron shafts.

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lots of good thoughts and info, forgot about tempo and tip flex saeve125, the problem is 2 fold, no consistency between manufacturers and too many variables in the shaft parameters regarding flex points, shaft flex, etc IMHO. I picked up the chart off golfsmiths site while checking out shafts, 43" is not a 5 iron or a driver but as one poster said could be raw length so that doesnt really help. when I first started I went with regular flex and sprayed the ball both iron and driver all over the place (not too long ago since I'm only playing a year and a half), I changed over to stiff and had better control I have a fast tempo and a lot of power yet, but at my age bracket (62) I'm sure things dont take too long before they drop fast. I can try different clubs and shafts but was also thinking of trying a shaft change on my own and go with a shaft I know I like but with a regular flex but not sure that will work either which is why I reached out for some info and thoughts.
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Surfed a couple of shaft sites today. UST, Garafolloy and I like the fit program on the UST site. I have decided I probably need to have just a little more info on shafts, too much and I might be dangerous. I am going to look into a fitting come the spring, at least for the woods right now since overall I am happy with the irons even if they are not an exact fix, but I do need to be more versitile with the woods and hybrids, may try some clubs after the holidays at a local golf shop to get the grey matter burning with some more data. Thanks for the replies and info, we'll see if the plan yields success in the spring/summer.
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Your driver swing speed is a starting point for selecting the right shaft flex. After that, swing characteristics come into play for fine tuning: things such as, whether you have a smooth or quick tempo, and how quickly you unload your hands on downswing. Also, the shaft weight (grams on a scale) are a factor. Too heavy a shaft will slow you down, too light a shaft will be hard to feel during the swing - could lead to overswinging and poor control.

That's where a skilled fitter can help out.

sportsnut, you're the same age as me (62). I have an arthritic right hip, and on days when I'm a little stiff I don't always get through the ball smoothly. You might consider a shaft that will work on days you are swinging OK, not one for days when you're swinging really well. Just a thought.

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WU Tiger, thanks for your feedback, especially interesting since swing tempo was also mentioned to me when I took a tour of Golftec last week. I do have a fast tempo which is what I told the instructor after he asked. I also know what my expereinces are from previous clubs as well and I had a lot of problems with the regualr flex clubs I originally owed a few years ago. The chart I posted was from Golfsmith but after looking at more shaft specs on their site each listing for shaft flex by swing speed was a little different so those charts must be baased on individual manufacturers recommendations. Also a good thought by you was select for the average day not the good day, sounds like really good advice and not something I had thought of before. Definitely need to see a good fitter for at least my woods for now. Thanks and Happy Holidays.
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