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Posted
I never trust the indicated yardages, sometimes they're shockingly inaccurate. It's one reason I bought the laser rangefinder. It's always in the bag.

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Posted
I don't go by yardages and don't have a range finder. I just go by relative distance. That works for me.

Steve

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Posted
In my opinion, the range should be used to gauge and focus on your ball flight and not your distance. Range balls can be so variable in the design and condition that distance isn't really accurate to what you'll have when actually playing with new balls.

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Posted
Range balls also spin different than playing balls, usually less. So a shot that curves 5 yards on the range might curve 10-15 on the course.

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Posted
Does anyone know:
1) When using range balls in good condition, clearly marked Range Ball...are these balls "harder" than normal balls?
2)How much distance do you lose when hitting in 40 degree F weather?

I bought new irons this winter and would love to know my real "summer distance"

Posted
  bpschmid said:
Does anyone know:

1) Compared to most balls, yes.

2) It's not a huge difference, but it exists. In this video they do experiments at 38* and roughly 100*, basically exactly what you're asking. Their results were that a 275 yd drive decreased to a 265 yard drive, or about a 3.5% drop in distance. (The golf part of the video starts at about 1 minute in.) The cold will effect the specifics of your driving, but I think it's going to be practically negligible for your short irons. Note, however, that the experiment only tested the temperature of the ball, not the atmosphere. I believe that having a cold atmosphere imposes additional challenges on the ball's flight, but not as much as the temperature of the ball itself.

"Golf is an entire game built around making something that is naturally easy - putting a ball into a hole - as difficult as possible." - Scott Adams

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Posted
To find your real distance, you will have to hit the regular balls you play. You can check the distance when hitting approach shots with a range finder, the yardage markers are not always correct. One option is to have a large field, or a golf course with no/little people on it, mark up the distances with something and hit some shots.

Ogio Grom | Callaway X Hot Pro | Callaway X-Utility 3i | Mizuno MX-700 23º | Titleist Vokey SM 52.08, 58.12 | Mizuno MX-700 15º | Titleist 910 D2 9,5º | Scotty Cameron Newport 2 | Titleist Pro V1x and Taylormade Penta | Leupold GX-1

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Posted
My course has 3 hitting areas on the driving range, which they rotate in order to keep the grass in good shape. There's at least 40 yds difference from the front one to the back one, but the yardage markers aren't adjusted depending on which hitting area is open.
Anyone who tries to use a driving range, and range balls, to determine what their distances are should get their head checked.

Posted
  B-Con said:
Note, however, that the experiment only tested the temperature of the ball, not the atmosphere. I believe that having a cold atmosphere imposes additional challenges on the ball's flight, but not as much as the temperature of the ball itself.

I think the temperature of the atmosphere will typically have an even greater effect. For example, on a cold dry sunny winter day (after a cold front), say at 40 degrees, with 30.30 inches pressure and 20 degree dewpoint, the density altitude at sea level would be about -1700 feet. On a warm humid summer day, say 90 degrees, 29.90 pressure, and 70 degree dewpoint (typical gulf coast summer day), the density altitude is about 2300 feet. That is about a 3500 ft difference in effective altitude, which will make a huge distance in how far a ball will fly, and will be in addition to the ball temperature advantage.

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Posted
Most driving ranges with grass tees will move the tee boxes without moving the markers. so the flags might be accurate from the back but not the front of the range.

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Posted
  jrm1493 said:
I think the temperature of the atmosphere will typically have an even greater effect. For example, on a cold dry sunny winter day (after a cold front), say at 40 degrees, with 30.30 inches pressure and 20 degree dewpoint, the density altitude at sea level would be about -1700 feet. On a warm humid summer day, say 90 degrees, 29.90 pressure, and 70 degree dewpoint (typical gulf coast summer day), the density altitude is about 2300 feet. That is about a 3500 ft difference in effective altitude, which will make a huge distance in how far a ball will fly, and will be in addition to the ball temperature advantage.

Good point. I didn't think that part through.

"Golf is an entire game built around making something that is naturally easy - putting a ball into a hole - as difficult as possible." - Scott Adams

Mid-priced ball reviews: Top Flight Gamer v2 | Bridgestone e5 ('10) | Titleist NXT Tour ('10) | Taylormade Burner TP LDP | Taylormade TP Black | Taylormade Burner Tour | Srixon Q-Star ('12)


Posted
Compared to the two courses I frequently play, the yardage markers at my local range are very short.
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Posted
  RCF said:
Compared to the two courses I frequently play, the yardage markers at my local range are very short.

I wouldn't be too trusting of Course yardages either.I played yesterday and ended up more confused about my yardages than ever.The marked distances on the card and on course were obviously way off.On one hole they'd suggest I'd just hit a 290 yard drive, on other holes 200.And my driving was fairly similar and consistent all day.A range finder is obviously the only way to know for sure.

A great shot is when you go for it and pull it off. A smart shot is when you don't have the guts to try it. ~ Phil Mickelson.

 

Posted
I agree, I definitely need to get either a laser rangefinder or a gps. Both the range, and the course yardages are very untrustworthy, especially on par3's when its really important to have the right club.

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Putter: XG #9 35"Ball: TP II


Posted
i find the range at my home course to be inaccurate as well, Ive been playing on the PGA golf simulator lately...VERY accurate driving range on it :)

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Posted
I never trust yardages at driving ranges. The balls are vastly different from what I'm gaming.

I simply warm up through the bag and then settle on hitting whichever stick seems to work for the distance to a target flag. I'll keep hitting this club at the flag while trying to smooth out my swing.
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Posted
I don't trust the yardage markers either, so I bring my range finder. I also don't trust the typical range balls either as most posters have said. If you usually use the same range, next time you are there, throw a couple of the range balls in your bag. When you are on the course on a quiet day, hit a couple of your normal balls, then a couple of range balls. You should be able to see how much different the distance is. Keep that in mind the next time you are at the range and make the yardage adjustment in your head. You may want to do this for a couple of clubs. Oh, and don't forget to return those range balls that you "borrowed" to the range.

Driver : ping.gifG15 10.5* Serrano Stiff
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  • Posts

    • All great info. Thanks for the reply. 
    • Yea, it's more complicated than your high school projectile motion equations.  I am thinking it could increase under certain conditions. A gust of wind blowing in the same direction as the spin, causing more high and low pressure on the ball in a certain way that it increases the spin?  It has zero vertical velocity at its apex. So, it is all velocity caused by gravity for the vertical component.  Yea, landing angle is a big thing.  It is parabolic. Your apex is 90 yards in the air. A 30-yard elevated green is 1/3rd that height. At the apex, your vertical descent angle is zero, it should be horizontal. So, you are going from zero theta to let's say 45 degrees. Even if it was linear, let's say you're landing angle is close to 30 degrees. That is less than a driver and probably is significant.  Yea, it depends on how you hit it. Especially for downhill shots. If you hit a flighted shot, it might react more like a normal shot because of the lower launch and lower apex relative to your position. Versus a normal shot might come in at like 70 degrees, instead of 45 degrees.       
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    • Spin will decay slightly over time, but not by a lot. The horizontal portion of the velocity will also decay due to air resistance. The vertical component will be increasing since the ball is accelerating due to gravity (albeit that the spin is creating lift, which will counteract that some). Neither of those has much of an impact of how the ball will react. The biggest difference is the vertical land angle. The angle theta prime (not sure how to show that on here) will be shallower than theta. That means the ball will stop faster at theta than at theta prime. The other thing is because there is still a horizontal component to the velocity, it will carry less far at theta prime than at theta.  The effects of those two things work in opposite directions. Which one "wins" will depend on ground conditions, ball flight, spin, any necessary carry distances, etc. Fortunately the margins are fairly small so you can wing it with enough experience. The calculation of the carry distance change is what your range finder estimates when you have slope turned on.
    • So, I was looking at this image and wondered what the best way is to play your approach to an elevated green versus a lowered green. Is the spin and velocity profile at θ' much different than at θ? I don't know the physics of it but to my wee brain, it would seem that at θ' the spin would be higher but velocity lower. At θ the spin would seem to be lower but velocity higher since it has more time to fall from its peak where it would be zero. Even the image below is off visually since we know the arc of the ball flight isn't consistent throughout.    It's okay if you tell me I'm overthinking this. 😂  
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