kbs Ctapers launch monitor numbers...comments please

I've got no idea about the numbers, but they look pretty straight in the pic!

You must be using a pretty strongly lofted 6i to be hitting it that far at only 84mph. I can carry a 7i about 180 pretty easily and I use the soft stepped X in C tapers, but I definitely have about 8-10mph of clubhead speed on you. I love them for the feel and dispersion, and I happen to fit them pretty well for trajectory, but they ain't cheap. I went with soft stepped X simply because I wanted 130g instead of 120 or 125. I was recommended to get the S+.

The reason you hit it so far is you create such high launch and low spin. It's great with the driver and fairway woods, but it results in a knuckleball that rolls 20 yards. You also manage to generate a pretty high ball speed relative to your swing speed, so I suspect some combination of very hot irons and a distance ball. 

The max height is interesting, because most tour players shoot for a 90 foot/30y max height on every club. Your max height is about perfect, however most pros have a descent angle of at least high 40s in their irons, over 50 in short irons. That's because they're putting on a lot more spin on a lower launching shot so it will come down steep, peak late, use up its energy sooner, and take less of a bounce. The actual spin on the ball doesn't do much until it's already settled on the green, so spin-checking is a bit of a misnomer. If you can get a 30+ max height and 48+ on descent angle, odds are you'll stop the ball with your irons, regardless of your actual spin number.

As for your dispersion and consistency, both are really good to be honest. http://www.pgatour.com/r/stats/info/?337 The pros average, from 175-200 yards, anywhere from 30 feet for the best in the category to about 40 feet for the worst. That's 10-13 yards offline, assuming good distance control. Given that you aren't playing on tour greens, but that's still pretty straight hitting by the looks of it.

I'd recommend against using the C tapers in this flex, though you might be able to play like R+ or R (Jim Furyk plays R+ and his dispersion is pretty good, his SS is even higher than yours by a bit). I'd possibly look into the head or loft, and most likely consider a switch to a tour or higher spin ball just to get the spin numbers up and the launch down slightly. But unless you're playing really low spin equipment already, it's your technique that's causing a really low spin and high launch for irons, even with a tight dispersion.

OK that makes a bit more sense, your clubhead speed is probably more like 88-90 or so. I was using the same chart as a reference, so I think we're on the same page here. Seems more likely than getting a 1.45 smash factor with a mid iron. Those types of LMs typically just calculate based on a preset smash factor, so trust Trackman over a shop's monitor.

I've noticed with my own irons, though I can't generalize completely, but I think the C tapers perform best when you load them a bit. They're designed for a quick tempo and high spin players and I find they feel smoother with an aggressive swing. The same swing with a typical stiff shaft will result in the clubhead whipping everywhere. Drives me nuts... They'll keep dispersion tight even if you put a bit extra on. But on shorter shots it's best to keep the swing short and accelerate hard rather than swing smooth. If you have a long and smooth full swing, you might not get these shafts to work that well for you either. But I have no problem personally with loading them for any shot with my irons, from 3-PW. I would go with something smoother in my SW/LW, but I'd gladly put them in my hybrid if I could. I've never used a shaft I didn't have to flight the ball down with until this one, but this one works. 

I'm not much of a fitter, but I find a heavier shaft helps me with dispersion and controlled launch more than anything. I hit my 78g r flex driver better than my 63g S flex, and my 130g C tapers better than lighter iron shafts. You went from 130g to 120, so it's possible you got the high launch from that, or from being unused to the flex. I can hit my C tapers extra high if I want, but typically they stay on a good trajectory automatically when hit well. When I want to hit them low, I can hit them pretty low too. They're extremely stable, don't have a big kick or lag feeling, but still let you know when you're loading them. I felt like I could have played either S or X straight in without a problem, such is the ability of the shaft to handle my swing. If you liked the feel, consider testing one of the other flexes in either direction, or even the old standby Dynamic Gold which has the weight and a bit of flex to it, but launches lower than KBS. You could also consider switching balls, but that probably won't make more than a couple hundred rpms of difference, and it's a big change for good players.

You're a +3hcp, so obviously you can hit the ball pretty well. If you don't think it's right, you obviously know your stuff. It's not as if your manhood relies on playing C tapers, and there's little point messing with something that got you to that level.