WEBVTT 1 00:00:01.520 --> 00:00:04.759 For members only. Golf Smarter number three hundred and fifty 2 00:00:05.040 --> 00:00:07.839 published on September twenty five, twenty twelve. 3 00:00:07.960 --> 00:00:13.039 Welcome to golf Smarter Mulligans, your second chance to gain 4 00:00:13.080 --> 00:00:16.679 insight and advice from the best instructors featured on the 5 00:00:16.679 --> 00:00:22.679 Golf Smarter podcast. Great Golf Instruction Never gets old. Our 6 00:00:22.800 --> 00:00:27.600 interview library features hundreds of hours of game improvement conversations 7 00:00:27.719 --> 00:00:31.239 like this that are no longer available in any podcast app. 8 00:00:31.320 --> 00:00:34.000 So we have a simple case, for example, a ten 9 00:00:34.039 --> 00:00:37.200 foot putt across flat green on a filt that you 10 00:00:37.320 --> 00:00:40.359 run into all the time, plus the break. How much 11 00:00:40.399 --> 00:00:42.719 does a break? So I've designed two futt putts to 12 00:00:42.759 --> 00:00:45.960 tell you all about it. You'll find a two percent slope. 13 00:00:46.079 --> 00:00:48.719 We've already described how you though it's two percent, walk 14 00:00:48.759 --> 00:00:51.560 straight down till one hundred inches away you can go, 15 00:00:51.600 --> 00:00:53.439 and then you stop, and you compare where your foot 16 00:00:53.520 --> 00:00:55.600 is to where the hole is, and what's the elevation 17 00:00:55.759 --> 00:00:58.119 drop from the hull to your foot. You imagine a 18 00:00:58.119 --> 00:01:01.000 stream coming out of the whole dead level and how 19 00:01:01.079 --> 00:01:02.880 it is as far as your foot, and hide of 20 00:01:02.920 --> 00:01:05.120 the string above your foot tells you how many inches 21 00:01:05.200 --> 00:01:08.400 it is to the surface. That's what percent. The slope is. 22 00:01:08.560 --> 00:01:10.719 If the string hits your foot at two inches off 23 00:01:10.719 --> 00:01:14.400 the ground, it's slope because you've went one hundred inches downhill. 24 00:01:14.719 --> 00:01:17.879 Two percent is to over one hundred it's a drop 25 00:01:18.000 --> 00:01:20.640 or rise of two inches, a very run of one 26 00:01:20.680 --> 00:01:24.359 hundred inches. That's the percent. It's also called the grade. 27 00:01:24.599 --> 00:01:26.959 If the string inch your foot at three inches off 28 00:01:27.000 --> 00:01:29.560 the ground, and that's a three percent slope. It's through 29 00:01:29.680 --> 00:01:31.480 the level of string from the ult your foot hits 30 00:01:31.480 --> 00:01:33.879 you in the ankle. That's a four percent slope. 31 00:01:37.959 --> 00:01:41.599 A graduate level education on reading the greens with Jeff Manga. 32 00:01:41.799 --> 00:01:47.040 This is Golf Smarter, sharing tips and insights from golfers 33 00:01:47.079 --> 00:01:50.560 and golf professionals to help lower your score. It's worked 34 00:01:50.599 --> 00:01:52.319 for your host, Fred Green. 35 00:01:52.760 --> 00:01:54.719 Welcome back to Golf Smarter for remembers only. 36 00:01:54.879 --> 00:01:57.760 Jeff, all right, go, I'm a jacket on. 37 00:01:58.719 --> 00:02:01.719 We're back the coffee still at McDonald's. 38 00:02:02.439 --> 00:02:04.200 I have a member's only jacket. 39 00:02:05.840 --> 00:02:07.799 And you've had it since nineteen seventy seven. 40 00:02:08.280 --> 00:02:09.439 Yeah, I got it from the thristle. 41 00:02:11.599 --> 00:02:14.080 Well, this is a member's only episode and everyone's got 42 00:02:14.120 --> 00:02:14.840 their jackets. 43 00:02:17.199 --> 00:02:18.639 Welcome fellow jacket word. 44 00:02:18.840 --> 00:02:21.240 Yeah, you know for those of you who do remember 45 00:02:21.319 --> 00:02:25.400 members only jackets, I'm sorry, So let's talk about putting 46 00:02:25.439 --> 00:02:27.919 some more. Explain to me what a stimp meter is 47 00:02:28.000 --> 00:02:31.280 and what stimp means, and why we use that word, 48 00:02:31.520 --> 00:02:34.680 and is is it relevant to us as average golfers. 49 00:02:36.759 --> 00:02:44.159 Well, let me just describe to you green speed and 50 00:02:44.400 --> 00:02:48.800 the role of stimp meter in knowing and using and 51 00:02:48.840 --> 00:02:54.879 appreciating green speed. Okay, Green speed is the friction in 52 00:02:54.919 --> 00:02:59.639 the grass that opposes the rolling of the ball. If 53 00:02:59.680 --> 00:03:01.960 you're an outer space and you hit a golf ball, 54 00:03:02.199 --> 00:03:04.639 there wouldn't be any friction and it would just go 55 00:03:04.759 --> 00:03:07.319 forever until it was captured by Jupiter or some of 56 00:03:07.360 --> 00:03:14.719 the planet. If you hit a ball on marble, it 57 00:03:14.759 --> 00:03:17.759 has very little friction and it will go for a 58 00:03:17.800 --> 00:03:23.080 long way. If you hit a ball across grass, the 59 00:03:23.159 --> 00:03:26.439 bottom of the grass is in contact with a certain 60 00:03:26.520 --> 00:03:30.680 area of the green grass, the same way the tread 61 00:03:30.759 --> 00:03:34.120 tires in contact with the road in a certain area. 62 00:03:35.319 --> 00:03:40.599 And that area there is basic electrostatic connection between the 63 00:03:40.639 --> 00:03:44.159 grass and the ball that opposes the directionality of the 64 00:03:44.199 --> 00:03:48.840 ball and slows it down and brings it to a stop. 65 00:03:50.599 --> 00:03:54.759 And some greens have less friction than others because they 66 00:03:54.759 --> 00:04:00.159 have tight, short packed grass that makes it more in 67 00:04:00.199 --> 00:04:03.759 the direction of marble. And some greens have more friction 68 00:04:03.960 --> 00:04:11.039 because they have shaggy, buoyant, bulbous, fast and bubbles grass 69 00:04:11.039 --> 00:04:15.039 blades with a lot of water inside them like water beds. 70 00:04:16.279 --> 00:04:20.279 Grass blades are like water beds, and so the more 71 00:04:21.360 --> 00:04:23.879 water there is in the grass blades and the shagger 72 00:04:23.879 --> 00:04:26.439 of the grass, the taller the grass, the less packed 73 00:04:26.519 --> 00:04:29.639 it is that will have a lot of friction. So 74 00:04:29.680 --> 00:04:33.519 there's a range of green speeds, and modern golf course 75 00:04:33.720 --> 00:04:39.639 architects and maintenance technology has tried to bring green speeds 76 00:04:39.759 --> 00:04:43.720 up to the limit of what keeps the grass healthy 77 00:04:44.319 --> 00:04:50.160 and keeps it fast and uniform and true. Today greens 78 00:04:50.199 --> 00:04:56.079 can easily be maintained at around nine feet on the stimpmeter, 79 00:04:57.160 --> 00:05:02.639 which is about fifty oh it may be fifty or 80 00:05:03.120 --> 00:05:08.639 greater quality green surfaces than used to exist in the sixties. 81 00:05:10.879 --> 00:05:13.800 It's way better since nineteen eighty than it ever was 82 00:05:13.839 --> 00:05:20.680 in nineteen seventy and even today it's getting better. So 83 00:05:21.519 --> 00:05:26.360 greens at country clubs and municipal golf courses and high 84 00:05:26.399 --> 00:05:30.879 dollar public golf courses or semi private golf courses they 85 00:05:30.920 --> 00:05:34.519 can all have a very high quality green surface that 86 00:05:34.680 --> 00:05:38.160 does not require us a lot of special speeding up 87 00:05:38.839 --> 00:05:45.519 for en global experiences. For example, everybody says bent grass 88 00:05:45.560 --> 00:05:50.480 is better than bermuda. In nineteen eighty one, Augusta, Georgia 89 00:05:50.879 --> 00:05:53.800 got rid of its bermuda grass and replaced it with 90 00:05:53.920 --> 00:05:58.120 bent grass because university researchers had designed the grass that 91 00:05:58.160 --> 00:06:03.519 would live in the hot and human South, and prior 92 00:06:03.519 --> 00:06:08.199 to nineteen eighty you couldn't grow bent grass in the Custa, Georgia. 93 00:06:08.439 --> 00:06:10.480 So as soon as they were able to grow a 94 00:06:10.680 --> 00:06:14.800 strain of engineered grass bent grass in Georgia, they ripped 95 00:06:14.800 --> 00:06:17.680 out all the permute and redid everything. And they found 96 00:06:17.680 --> 00:06:20.839 out that they're buried elephant grounds, and the greens of Augusta, 97 00:06:20.879 --> 00:06:24.319 Georgia were too steep for the quicker green speed. Remember 98 00:06:24.319 --> 00:06:27.639 it's a combination of the speed and the slope. And 99 00:06:27.720 --> 00:06:30.199 they had too much slope because they had old permuted 100 00:06:30.240 --> 00:06:33.360 greens with a lot of slope. And when they changed 101 00:06:33.360 --> 00:06:35.480 the bent greens, they had to get the bulldozers out 102 00:06:35.480 --> 00:06:39.720 and kind of flattened their elephants a little bit, all right. 103 00:06:39.800 --> 00:06:42.920 So they did the same thing with Pinehurst. You haven't 104 00:06:42.959 --> 00:06:45.920 seen a Donald Ross green because you can't have one today. 105 00:06:45.959 --> 00:06:48.079 The grass is too fast to allow that kind of 106 00:06:48.959 --> 00:06:51.680 crowning that he used to have. His were really crowned 107 00:06:51.720 --> 00:06:57.600 because they were slow. But the story continues into modern 108 00:06:57.639 --> 00:07:01.199 times because now they've gone full circle and now the 109 00:07:01.319 --> 00:07:04.959 highly engineered bermuda grasses or superior to the bent grasses. 110 00:07:06.199 --> 00:07:06.920 That's interesting. 111 00:07:07.439 --> 00:07:13.079 For example, Champions is a strain of highly engineered bermuda 112 00:07:13.120 --> 00:07:16.560 grass that you can pack and mow and get low 113 00:07:16.720 --> 00:07:21.079 and true, and it is more heat resistant than the 114 00:07:21.199 --> 00:07:25.560 special bent grasses of Augusta George in Greensboro, North Ohino. 115 00:07:25.639 --> 00:07:29.800 The PGA Tour just finished in the Wyndham Championship and 116 00:07:30.160 --> 00:07:34.240 a billionaire bought a bankrupt country club and the first 117 00:07:34.240 --> 00:07:36.319 thing he did was rip out all the bent greens 118 00:07:36.959 --> 00:07:43.079 and put in Champions dwarf Bermuda greens. And the golf 119 00:07:43.639 --> 00:07:49.279 professionals from PGA Tour exuded luxuriously about the wonderful condition 120 00:07:49.519 --> 00:07:51.839 of the greens at Wyndham Championship. 121 00:07:57.879 --> 00:08:00.800 Do golf courses want to have their green as fast 122 00:08:00.879 --> 00:08:03.199 as they possibly can? Is that there. 123 00:08:05.160 --> 00:08:07.399 There's a limit on you know, I mean, if you 124 00:08:07.439 --> 00:08:11.160 want to put on marble greens, not yourself out. There's 125 00:08:11.199 --> 00:08:14.120 a limit to you know, what is the challenge of 126 00:08:14.360 --> 00:08:22.560 golf in the outside of environment. So STEMP thirteen Oakmont 127 00:08:22.720 --> 00:08:27.439 is kind of silly. I mean, who wants to play that. 128 00:08:27.920 --> 00:08:31.240 It's interesting as a vacation, like going to Disneyland once, 129 00:08:31.639 --> 00:08:33.080 but you sure don't want to live there. 130 00:08:34.039 --> 00:08:35.879 Yeah, but when you only play up to play there once, 131 00:08:35.960 --> 00:08:38.080 you're probably just going to get torture. 132 00:08:39.039 --> 00:08:40.960 You won't come back, right, you won't. 133 00:08:40.960 --> 00:08:43.200 You won't come back. You'll say, oh, I really want 134 00:08:43.240 --> 00:08:45.679 to play this game because now I finally after eighteen old, 135 00:08:45.720 --> 00:08:47.840 I finally got this bit. Yah, you ain't coming back. 136 00:08:48.559 --> 00:08:50.480 You take pictures and everything, but you just you know, 137 00:08:50.679 --> 00:08:54.080 it's goofy. It's not really what the skill of the 138 00:08:54.120 --> 00:08:56.399 golf is all about. The skill of the golf is 139 00:08:57.000 --> 00:08:59.679 you know, it's a reasonable test. It's not a goofy 140 00:09:00.480 --> 00:09:04.759 buck based thing. There's a certain point where the green 141 00:09:04.799 --> 00:09:12.279 speed gets beyond controllable. The reads you just you're just 142 00:09:12.360 --> 00:09:14.600 shooting in the dark and making a read because you 143 00:09:14.639 --> 00:09:18.080 can't control your boss bet enough. And you it's the 144 00:09:18.200 --> 00:09:22.080 variation on what it will work is all over the map, 145 00:09:22.159 --> 00:09:24.919 and you know, you're three putton and all that kind 146 00:09:24.919 --> 00:09:29.240 of stuff, and downhill putts are crazy. So somewhere around 147 00:09:29.519 --> 00:09:35.399 stamp twelve, that's where you probably should stop. If you 148 00:09:35.440 --> 00:09:39.200 go past Stemp twelve, you're just you're just toying with 149 00:09:39.399 --> 00:09:40.360 wounded mice. 150 00:09:43.240 --> 00:09:46.320 And if you're below what number is it like just 151 00:09:46.879 --> 00:09:48.559 you you need to just. 152 00:09:48.639 --> 00:09:54.000 Add I would say it's today. In Europe, some of 153 00:09:54.000 --> 00:09:56.279 the greens are seven and a half feet on the 154 00:09:56.320 --> 00:10:00.039 Stemp meter, maybe seven on a bad day. They have 155 00:10:00.120 --> 00:10:04.679 some humidity problems. For example, in the Netherlands, it's pretty 156 00:10:04.720 --> 00:10:09.200 much below sea level and the grass is too moist. 157 00:10:09.639 --> 00:10:14.279 The soil is not draining well, and those grasses can 158 00:10:14.360 --> 00:10:18.000 be a little thin, and if they're thin, you got 159 00:10:18.039 --> 00:10:19.960 to kind of grow them tall in order to cover 160 00:10:20.000 --> 00:10:24.399 the green, and then it's not that great. So in 161 00:10:24.519 --> 00:10:31.000 Europe some of the greens are not suitable for really 162 00:10:31.080 --> 00:10:35.879 fast surfaces. As you get further towards the warmer climates, 163 00:10:36.039 --> 00:10:38.159 you can pick up some good greens. I would say 164 00:10:38.279 --> 00:10:43.519 Aldraama and places like that, you can have some really nice, 165 00:10:43.600 --> 00:10:47.080 really good greens. There's a lot of quality golf in Europe. 166 00:10:47.120 --> 00:10:51.320 Don't get me wrong, it's good I'm just saying that 167 00:10:51.320 --> 00:10:55.679 that seven point five on a meter, if you roll 168 00:10:55.679 --> 00:10:57.440 the ball off the bottom of a stent meter and 169 00:10:57.600 --> 00:10:59.799 only those two putter links and the plus a little 170 00:10:59.840 --> 00:11:04.279 bit further, that's not a great green. PGA tours typically 171 00:11:04.320 --> 00:11:08.879 are stimping eleven feet, which is a lot more than seven, 172 00:11:10.720 --> 00:11:15.039 and on a fast, challenging green, they can go up 173 00:11:15.039 --> 00:11:19.679 to twelve and thirteen. You don't want to US Opens. 174 00:11:19.720 --> 00:11:23.360 They're always trying to maximum maximize the green speed for 175 00:11:23.399 --> 00:11:27.840 some reason, because they're just torturous, cruel individuals that are 176 00:11:27.919 --> 00:11:33.559 testing golfers that you know can play lots of golf 177 00:11:33.600 --> 00:11:36.039 courses with high degree of success and they want to 178 00:11:36.080 --> 00:11:37.960 mess with that particular crowd. 179 00:11:38.240 --> 00:11:41.679 Yes, well, that and growing the rough as thick as 180 00:11:41.720 --> 00:11:45.000 they possibly can, right, I mean, it's the hardest test 181 00:11:45.039 --> 00:11:48.840 in golf. It makes great golfers look like it's. 182 00:11:48.679 --> 00:11:53.200 Not something that a normal golf would want to do. No, 183 00:11:53.240 --> 00:11:57.000 it's it's not really a golf It's the US Open golf, 184 00:11:57.039 --> 00:12:00.559 but it's not really what normal people will think of. 185 00:12:00.759 --> 00:12:04.919 Is off right Now, back to the limit on how 186 00:12:06.080 --> 00:12:09.759 much you can speed up the grass if you're green 187 00:12:09.919 --> 00:12:13.840 has been designed with x amount of slope. You can't 188 00:12:13.960 --> 00:12:17.200 put pen positions where you're going to speed it up 189 00:12:17.200 --> 00:12:21.399 to thirteen if that slope is too steep. And so 190 00:12:21.559 --> 00:12:25.279 all US Open golf course set up people have been 191 00:12:25.320 --> 00:12:31.000 given the so called Tom Meeks injunction with that Tom 192 00:12:31.159 --> 00:12:33.399 Tom Meeks is the guy that's screwed up. They set 193 00:12:33.519 --> 00:12:36.440 up three different times and they fired. They threw him 194 00:12:36.440 --> 00:12:40.480 out the window. It's called defenestration. Chuck you out the 195 00:12:40.519 --> 00:12:47.120 windows used to be popular in Florence in Dante's day 196 00:12:47.679 --> 00:12:50.440 with the medicis and all that, and sometimes they did 197 00:12:50.440 --> 00:12:53.200 it in the nineteen twenties New York with the mafia. 198 00:12:53.360 --> 00:12:55.399 But any rate, when they throw you out the window, 199 00:12:55.440 --> 00:12:58.600 that means they've had enough because you you messed up 200 00:12:58.840 --> 00:13:03.679 the US Open by putting the pin position on two 201 00:13:03.799 --> 00:13:06.480 great a slope and then you drove the speed of 202 00:13:06.519 --> 00:13:09.440 the surface up past the red line and the ball 203 00:13:09.519 --> 00:13:17.480 won't stop. It's called crazy golf and you look terrible 204 00:13:17.480 --> 00:13:23.039 on TV when the US Open is completely stupid. They 205 00:13:23.039 --> 00:13:25.720 did it at Shinnecock Hills, they did it at Southern Hills. 206 00:13:25.759 --> 00:13:30.879 They did an Olympic in San Francisco. It was it's 207 00:13:31.000 --> 00:13:34.720 just so. Now they have a little rule. If you're 208 00:13:34.720 --> 00:13:36.440 going to be the setup guy for the USJ and 209 00:13:36.480 --> 00:13:38.279 set up the US Open, it puts you in a 210 00:13:38.399 --> 00:13:41.120 room and they say you have one mission in life. 211 00:13:41.279 --> 00:13:48.120 Do not pull a tom meeks So. But anyway, so 212 00:13:48.600 --> 00:13:53.960 that that that combination of green speed and slope, there's 213 00:13:54.000 --> 00:13:58.559 a number. You can figure it out. The combination really 214 00:13:58.600 --> 00:14:03.000 needs another word. I call it the SS the slope stemp. 215 00:14:04.919 --> 00:14:08.480 So if you take the slope two percent and multiply 216 00:14:08.519 --> 00:14:11.840 at times the green speed stemp ten, a ball rolls 217 00:14:11.879 --> 00:14:14.200 off the stemp meter and rolls ten feet across the green, 218 00:14:15.080 --> 00:14:21.440 that would be a SS of twenty ten. The ball 219 00:14:21.480 --> 00:14:27.600 won't stop when the SS is sixty, okay, just in 220 00:14:27.679 --> 00:14:31.759 physicals just won't stay there, all right. It's like you 221 00:14:32.080 --> 00:14:34.279 tilt to the table so much that all the plates 222 00:14:34.279 --> 00:14:39.200 slid off, all right, Now, A sixty can be reached 223 00:14:39.200 --> 00:14:44.559 by any number of pathways a four slope four percent 224 00:14:44.639 --> 00:14:49.559 and a fifteen stemp green, or a twelve stemp green 225 00:14:49.879 --> 00:14:55.639 and a five percent slope, or a ten stemp green 226 00:14:55.840 --> 00:15:02.120 and a six percent slope. S Yeah, that works. No, 227 00:15:02.399 --> 00:15:07.399 do any of those combinations of slope steepness and green 228 00:15:07.440 --> 00:15:12.559 speed when multiplied together equals sixty. They're functionally equivalent ball 229 00:15:12.639 --> 00:15:13.919 and stop. Oh got it? 230 00:15:13.960 --> 00:15:14.320 Okay? 231 00:15:15.519 --> 00:15:20.480 Ten times six is sixty. Thy yep, Stemp ten green 232 00:15:20.840 --> 00:15:25.320 six percent slope ball won't stop. Four times fifteen is 233 00:15:25.360 --> 00:15:30.639 sixty a Stemp fifteen green, and a four percent slope 234 00:15:30.799 --> 00:15:35.279 ball won't stop. So four percent. If it's a faster 235 00:15:35.519 --> 00:15:38.679 green than a Stemp ten, a Stemp ten, you can 236 00:15:38.720 --> 00:15:40.559 tilt it all the way to six percent and it'll 237 00:15:40.600 --> 00:15:43.960 still it won't roll off. But when you speed up 238 00:15:43.960 --> 00:15:46.799 to a Stemp fifteen, you can only go to a 239 00:15:46.840 --> 00:15:51.559 four percent slope and then it'll roll off. Right. That's 240 00:15:51.600 --> 00:15:54.720 what happened to Augusta National. They're buried Elphin grounds are 241 00:15:54.720 --> 00:15:58.399 too steep and they've got a faster grass on their 242 00:15:58.440 --> 00:16:01.559 golf course green, and then they had to flatten out 243 00:16:01.559 --> 00:16:06.799 the greens. The tilt is permanent. The green speed comes 244 00:16:06.840 --> 00:16:07.600 and goes. 245 00:16:08.120 --> 00:16:10.320 Oh interesting, yeah, of course. 246 00:16:10.399 --> 00:16:14.919 Okay, So five times twelve a five percent slope, that's 247 00:16:14.960 --> 00:16:17.039 as far as you can go with a Stemp twelve 248 00:16:17.120 --> 00:16:21.919 green ten toms six. You can go to six percent 249 00:16:21.960 --> 00:16:26.039 when you keep it down to Stemp ten, So if 250 00:16:26.080 --> 00:16:28.639 you slow down you can have steep conter. But if 251 00:16:28.679 --> 00:16:30.480 you ever get to where you really want to go 252 00:16:30.559 --> 00:16:33.200 for the gusto on your green speed and you start 253 00:16:33.200 --> 00:16:36.120 getting a bow stamp ten and eleven and that sort 254 00:16:36.120 --> 00:16:40.240 of thing, your pen positions kind of shrink on the green. 255 00:16:40.639 --> 00:16:42.360 If you had an image of the green and you 256 00:16:42.399 --> 00:16:45.360 said where are all the alliable pen positions? The first 257 00:16:45.399 --> 00:16:49.440 question is how fast is your STEMP speed. STEMP ten 258 00:16:49.559 --> 00:16:52.879 has a lot more pennable positions on green X, then 259 00:16:52.960 --> 00:16:58.399 does stamp eleven. They start to evaporate and the steeper 260 00:16:58.399 --> 00:17:05.119 conters become unavailable wolf for pin positions. The USDA they 261 00:17:05.119 --> 00:17:07.920 have little programs in little charts they carry around to 262 00:17:08.359 --> 00:17:11.519 watch that, and then they get on their weather channel 263 00:17:11.559 --> 00:17:15.440 on the TV and on the internet and they start 264 00:17:15.480 --> 00:17:19.680 predicting the weather for Wednesday, Thursday, Friday, Saturday and Sunday 265 00:17:19.720 --> 00:17:22.440 to make sure that they're not going to get side 266 00:17:23.480 --> 00:17:29.000 ambushed by dry, hot, windy weather that makes the greenspeed 267 00:17:29.079 --> 00:17:33.119 go over the red line that happened at shintyk Killops. 268 00:17:35.039 --> 00:17:38.319 So they don't really want to get all that close 269 00:17:38.400 --> 00:17:40.200 to the borderline. They're going to keep away from a 270 00:17:40.240 --> 00:17:44.759 little bit, so they have an absolute red line in physics, 271 00:17:44.799 --> 00:17:47.960 and then they back away from that at ten to six, 272 00:17:48.440 --> 00:17:51.920 six is like the absolute limit. You don't want to 273 00:17:51.960 --> 00:17:54.240 get as close to that six as you can unless 274 00:17:54.279 --> 00:18:02.880 you're real sure about the weather. Let's talk about. 275 00:18:02.640 --> 00:18:07.279 The the two putts right back to last show we 276 00:18:07.599 --> 00:18:08.880 got that's where we got started. 277 00:18:09.319 --> 00:18:11.640 Okay, so I've created these two putts that you do 278 00:18:11.720 --> 00:18:14.759 that tells you a lot about green rings with two 279 00:18:15.000 --> 00:18:19.880 ten to actually face. Most are the ones you want 280 00:18:19.880 --> 00:18:22.559 to know, right, the ones and the ones that you 281 00:18:22.599 --> 00:18:24.960 can actually sink, those are the ones you want to 282 00:18:24.960 --> 00:18:28.680 focus on. So that's basically inside fifteen feet and for 283 00:18:28.720 --> 00:18:31.519 a lot of people inside end feet. And that's a 284 00:18:31.559 --> 00:18:34.480 simple putt without any funny conter. And it's flat from 285 00:18:34.519 --> 00:18:37.119 the ball to the hole, even though it's tilted. The 286 00:18:37.240 --> 00:18:39.799 surface is not wrinkled and bumpy. 287 00:18:40.359 --> 00:18:42.319 It's flat, not necessarily level. 288 00:18:43.240 --> 00:18:45.920 Yeah, it's not necessarily. It won't be level because that 289 00:18:45.960 --> 00:18:49.960 won't drain, so it will be tilted. But we're talking 290 00:18:50.000 --> 00:18:52.920 about the surfaces. If you ran your hand over it, 291 00:18:52.960 --> 00:18:57.039 is it one flat plane surface like a table. 292 00:18:57.799 --> 00:18:59.119 So that means the ball is just going to go 293 00:18:59.200 --> 00:19:02.039 straight from where you are to the well. 294 00:19:02.079 --> 00:19:04.799 It just means that the break is highly predictable because. 295 00:19:04.480 --> 00:19:07.880 It's not break is highly predictable as opposed to straight Okay. 296 00:19:08.480 --> 00:19:13.599 Okay, complicated breaks they go across across different contours other 297 00:19:13.640 --> 00:19:18.039 than one flat plane, and those are more difficult to 298 00:19:18.519 --> 00:19:22.920 predict and to read and to execute. So we have 299 00:19:22.960 --> 00:19:27.279 a simple case. The simple case is, for example, a 300 00:19:27.359 --> 00:19:30.559 ten foot putt across flat green on a tilt that 301 00:19:30.680 --> 00:19:34.400 you run into all the time. What's the break? How 302 00:19:34.480 --> 00:19:37.720 much does it break? All right? So I've designed two 303 00:19:37.799 --> 00:19:41.960 little putts to tell you all about it. Let me 304 00:19:42.039 --> 00:19:45.839 describe it. Okay, okay, this is like a diamond bullet 305 00:19:45.880 --> 00:19:50.000 to the forward version of what I'm talking about. You 306 00:19:50.119 --> 00:19:54.079 find a two percent slope we've already described. How do 307 00:19:54.119 --> 00:19:56.519 you know it's two percent? Walk straight down till one 308 00:19:56.599 --> 00:19:59.799 hundred inches away you can go, and then you stop, 309 00:19:59.839 --> 00:20:01.680 and you compare where your foot is to where the 310 00:20:01.680 --> 00:20:04.440 hole is, and what's the elevation drop from the hole 311 00:20:04.519 --> 00:20:07.240 to your foot. You imagine a string coming out of 312 00:20:07.279 --> 00:20:10.079 the whole dead level and it as far as your 313 00:20:10.079 --> 00:20:12.640 foot and hide the string above your foot tells you 314 00:20:12.680 --> 00:20:15.559 how many inches it is to the surface. That's what 315 00:20:15.720 --> 00:20:18.960 percent the slope is. If the string hits your foot 316 00:20:19.000 --> 00:20:21.720 at two inches off the ground, it's a two percent 317 00:20:21.759 --> 00:20:25.119 slope because you went one hundred inches downhill. Two percent 318 00:20:25.359 --> 00:20:28.839 is too over one hundred it's a drop or rise 319 00:20:28.880 --> 00:20:31.720 of two inches of very run of one hundred inches. 320 00:20:32.160 --> 00:20:37.039 That's the slope percent. It's also called the grade. If 321 00:20:37.039 --> 00:20:39.319 the string inch your foot at three inches off the 322 00:20:39.359 --> 00:20:43.559 ground and that's a three percent slope. If the level 323 00:20:43.599 --> 00:20:45.160 string from the hole to your foot hits you in 324 00:20:45.200 --> 00:20:47.279 the ankle, that's a four percent slope. 325 00:20:47.400 --> 00:20:49.400 So what we have to figure out is once we 326 00:20:49.480 --> 00:20:52.200 know what the slope is, once we know the degree is, 327 00:20:52.839 --> 00:20:55.240 we have to figure out how to adjust our speed. 328 00:20:55.359 --> 00:20:58.759 Right, We're going to test a two percent slope on 329 00:20:58.799 --> 00:21:04.640 the livery speed. Okay, here's the next component. The things 330 00:21:04.640 --> 00:21:09.240 that make up break in physics are basically the steepness, 331 00:21:11.119 --> 00:21:17.039 the green speed, the distance of the putt, the conjuring 332 00:21:17.480 --> 00:21:20.440 or the flatness of the surface, and your ball delivery 333 00:21:20.480 --> 00:21:24.240 speed across that surface. How fast is the ball traveling 334 00:21:24.240 --> 00:21:25.720 when it gets to the front lift of the cup. 335 00:21:25.759 --> 00:21:29.720 That's called a terminal velocity or a delivery speed. Those 336 00:21:29.799 --> 00:21:37.000 factors steepness, also direction uphill, flatness of surface, speed of grass, 337 00:21:37.240 --> 00:21:40.119 how far away you're putting, and what is your delivery speed? 338 00:21:40.799 --> 00:21:45.799 You can fix all of those and sort them out, 339 00:21:46.400 --> 00:21:49.440 and the only thing left is how much will it break? 340 00:21:50.359 --> 00:21:53.240 All right, that's like fixing the variables so that you 341 00:21:53.240 --> 00:21:56.000 don't have to deal with ten variables. You have just one. 342 00:21:56.799 --> 00:21:58.720 It's like an experiment. That's what you do when you 343 00:21:58.759 --> 00:22:01.680 do experiments. So we're going to fix all the variables. 344 00:22:01.720 --> 00:22:04.920 Here's one, it's flat. Okay, we've decided we found a 345 00:22:04.960 --> 00:22:07.799 flat piece of grass. It's at least ten feet away 346 00:22:07.799 --> 00:22:11.240 from a hole. It doesn't change contours. Flat number two. 347 00:22:11.319 --> 00:22:15.440 What's the slope we found out it's percent number three. 348 00:22:15.759 --> 00:22:19.359 What's the green speed? It's today's green speed. If you 349 00:22:19.400 --> 00:22:23.640 want to know for mathematical calculations, you need to know 350 00:22:23.720 --> 00:22:26.160 the st meter speed of the green and so you 351 00:22:26.240 --> 00:22:27.960 have to ask somebody to nose or else you have 352 00:22:28.000 --> 00:22:29.839 to under meter. Else you have to know how to 353 00:22:29.839 --> 00:22:32.400 make one or use how to have to know how 354 00:22:32.440 --> 00:22:37.200 to simulate one. Basically, if you swing a conventional hutter 355 00:22:37.240 --> 00:22:39.720 about fifteen inches back from the ball and then let 356 00:22:39.720 --> 00:22:43.599 it re swing itself without you powering it, that will 357 00:22:43.599 --> 00:22:46.319 deliver the velocity of the ball that a STMP meter 358 00:22:46.440 --> 00:22:48.319 gets it off the bottom of the ramp. It's about 359 00:22:48.319 --> 00:22:54.440 the same if you get to two shafts and you 360 00:22:54.480 --> 00:22:56.400 make a little camel out of the two shafts by 361 00:22:56.440 --> 00:22:58.839 holding them together, and then you put a ball on 362 00:22:59.680 --> 00:23:02.000 the shape and you lift the ball up about ten 363 00:23:02.039 --> 00:23:04.160 and a half to eleven inches off the ground and 364 00:23:04.200 --> 00:23:07.680 then let go. It'll roll down the two shafts through 365 00:23:07.680 --> 00:23:10.119 the little channel you made, and then when it comes 366 00:23:10.119 --> 00:23:12.400 off it'll be about the same speed as the STEMP meter. 367 00:23:14.079 --> 00:23:15.759 Or you can buy a step meter, or you can 368 00:23:15.799 --> 00:23:18.599 just ask the greens keeper or the pro shop what's 369 00:23:18.599 --> 00:23:21.039 the stemp the green speed? Plus the golf courses will 370 00:23:21.079 --> 00:23:24.000 push a little sign out by the green. Today's green 371 00:23:24.119 --> 00:23:28.839 is stimping nine point five, so that. 372 00:23:28.799 --> 00:23:30.799 Would be obviously that would be the easiest way to 373 00:23:30.799 --> 00:23:34.119 do it is just ask. But I'm sure there are there. 374 00:23:34.160 --> 00:23:38.920 There are so many different gadgets and and and apps 375 00:23:38.920 --> 00:23:41.119 for their phone and stuff that's going to help you 376 00:23:41.240 --> 00:23:44.119 determine this and are are they worth. 377 00:23:43.960 --> 00:23:48.000 What this is? One that doesn't really the apps don't 378 00:23:48.000 --> 00:23:50.880 tell you the green speed. You have to you have 379 00:23:50.960 --> 00:23:55.240 to input that one, okay, all right. The apps will 380 00:23:55.279 --> 00:23:57.960 tell you which way is uphill and how steep is it? 381 00:23:59.240 --> 00:24:01.039 It won't really say see how flat it is? And 382 00:24:01.079 --> 00:24:02.319 I want to tell you the green speed, and I 383 00:24:02.319 --> 00:24:04.839 want to tell your ball delivery speed. Those you have 384 00:24:04.920 --> 00:24:07.440 to input, and it doesn't tell you how far you 385 00:24:07.480 --> 00:24:10.759 are away from the hall, all right, So we're sorting 386 00:24:10.799 --> 00:24:12.799 out all of these how far away we're going to 387 00:24:12.880 --> 00:24:17.640 be ten feet? That's four military paces each military pace 388 00:24:17.799 --> 00:24:22.079 thirty inches or US parade looks like crap, everybody, So 389 00:24:22.160 --> 00:24:24.000 you have to make a thirty inch step to and 390 00:24:24.039 --> 00:24:26.680 a half feet each. Four of those ten feet walk 391 00:24:26.759 --> 00:24:28.680 four feet away from the hall. Your ten feet away 392 00:24:29.119 --> 00:24:35.000 were three four steps away, all right. Now, we would 393 00:24:35.160 --> 00:24:39.720 like conveniently to have a stamp speed of the green 394 00:24:40.599 --> 00:24:45.720 that is ten for easy division. So we really want 395 00:24:45.720 --> 00:24:49.759 to STEMP ten green if we can find it. All right. 396 00:24:50.240 --> 00:24:52.240 So let's say we got a STEMP ten green two 397 00:24:52.240 --> 00:24:55.519 percent slow flat, and we're ten feet away, and we 398 00:24:55.599 --> 00:24:58.480 know which way is directly uphill straight through the hall, 399 00:24:59.279 --> 00:25:03.920 and we chose specifically to go ten feet away side 400 00:25:04.000 --> 00:25:07.839 hill or perpendicular to the direction straight up hill. If 401 00:25:07.839 --> 00:25:10.279