Correct Yardages?

[ajohns38]

Hi all, can you help me determine if my foresight is accurately calculating my data? I only have the foresight app at the moment and the yardages just seem too low. I live in Denver with 5,280 feet of altitude, so I hit it farther than sea level, but I don't believe my yardages should be this low on the app. The data I have is in regards to a 6 iron. I know that on a par3 in Denver, I can hit it around 190 yards. Of course the cary might be a little lower than that, but if the par 3 was 190, I would pull out a 6 iron. I am a 1 handicap, so I am certain with my yardages. Here is the data I am receiving after an average of about 10 shots:

Ball speed: 112
Side Angle: 5.1 R
Side Spin: 816 L
Back Spin: 5416
Peak: 47.8
Cary: 147
Dispersion: 2.0 R

Does this look normal? Could it be calculating meters or something? I have it set on the app to yards, but when I click data, it says meters. BUT when I click flight, it says it is yards.

[FaultyClubs]

Optimal Flight is considered the gold standard for ball flight. They have a 1 month free trial.

[ajohns38]

But do these numbers look normal?

[FaultyClubs]

You said your carry number seemed low so you wanted to check that it was being calculated correctly. Put the measured data into OF and it will tell you.

Otherwise what numbers exactly you are doubting?

[DE819]

Launch angle is pretty important in this equation. But assuming it's within normal range ball speed and spin agree with carry if you ask me

[mmlincon]

What type of mat are you hitting off of? I've had a similar issue and I've narrowed it down to the mat. You can confirm this by using a tee and trying to pick it clean. Not exactly easy to duplicate your normal shot but might help to rule this out. Also, this could just be the "indoor effect". A lot of us seem to hit it shorter until we get used to playing inside.

Optimal Flight is models for Drivers so I didn't find it to be super accurate on irons. It's been a while since I've used to so they may have extended it.

[FaultyClubs]

OF is made for irons too so they must have extended it. I can't say when since it always has since I've been using it.

[Js1010]

I ran these through optimal flight with a guess for launch angle of 18 as you didn't supply and got 156 carry. I have done a lot of testing with OF and GC2 and find iron distances pretty close +-2 yards between the two so I trust Optimal Flight for the most part. 147 meters would put it at around 160 yards so that could be the case. I also tried 15 launch angle and got a yard less carry.

[mthunt]

Your distance is not far off at sea level. The LA is missing and important. A 112 6 iron should carry 150-160

[ajohns38]

Looks like my launch angle is 33 degrees.

I don't think I have indoor affect. I have been hitting inside for about a year now. Don't have a tee with the matt yet but I can try. I doubt it changes things that much.

[RCorsa]

33 degree launch angle is way to high. I'm getting around 16 launch and 118 ball speed which carries 174. My backspin is half yours. Sounds like you are hitting fat and getting bounce off the Mat?

[Mozza]

Something is wrong, you can't launch that high with a 6 iron, dont think I have seem more than 24 deg

[mthunt]

Those numbers will all equal 145 yards carry.

[Ronsc1985]

Something is wrong, you can't launch that high with a 6 iron, dont think I have seem more than 24 deg

In round numbers good ball strikers get something like about 8 degrees less for a launch angle then the loft of the club with irons hit off a flat surface. Since even an "old school" 6 iron has less then a 33 degree loft there is something definitely wrong. My guess would be either the initial tilt calibration is way off or the LM has a severe downward tilt relative to the surface being hit from.

[goatbarn]

I think the launch angle formula you're thinking of is dividing the loft in half. So a 34* lofted 6 iron, struck properly, should launch around 17*. You'll see the PGA tour averages are slightly under this "rule of thumb", but they are also the best in the world.

Lower launch, on a well struck shot, usually indicates good shaft lean and a descending blow.

High dynamic loft at impact would lead to a high than ideal launch angle. This would be caused by flipping and/or lack of shaft lean at impact. Usually related to an AOA that is too steep, but not necessarily.

OP, go to the range with your GC2 and see if your numbers are similar...specifically the launch and ball speed. Then your thought of not swinging differently indoors will be ruled out.

[fortysixandtwo]

If the ball launch is *33, wouldn't the dynamic loft be even greater by a few degrees?