wanole said:
you must get a lot of roll if you hit it 280-295 with a 110-112 swing speed.
I figured this would happen eventually.....let's sit down for some basic math. First here's a pretty good chart that i would say is slightly outdated for today's optimal launch conditions:
Also, here are some pretty good formulas that are fairly consistent from my launch monitor experiences both using and for fittings:
Ballspeed X 0.69= Swingspeed
(Ballspeed X 0.69) X 2.5 = Approx Carry Distance
Swingspeed X 2.5 = Approx Carry Distance
Ballspeed X 1.725 = Approx Carry Distance
Ballspeed/Swingspeed=Smash Factor
Some people feel that 2.40-2.50 is a good number, 2.5 is the "max efficiency." Same goes for 1.725, a bit high sometimes.
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So let's do some math:
110mph swing speed x 2.5 = 275 yard carry which is not ideal in the real world. So let's get it a little "less efficient for real world sake:
110mph swing speed x 2.42 (3.2% less efficient) = 266.2 yards of carry ~ 266 yards.
266 yards of carry + 10-12 yards of roll = 276-278 total drive.
Let's try 112 swing speed:
112mph swing speed x 2.5 = 280 yard carry which is not ideal in the real world. So let's get it a little "less efficient for real world sake:
112mph swing speed x 2.42 (3.2% less efficient) = 271.04 yards of carry ~ 271 yards.
271 yards of carry + 10-12 yards of roll = 281-283 total drive.
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Now math is all good but what about real world experience? Most of my drives are GPS measured via a golf cart. I can easily carry 265 yard objects and i don't swing 110-112 ALL the time.
In my Vector experience with a solid 107-108mph swing speed with an efficient strike and proper launch condidtions you can carry a ball roughl 265-268 yards and it should roll out roughly 12-15 yards unless your fairway is REALLLY wet.
So for me to swing at 110-112 and not always hitting the center of the face, a normal drive 275-280 isn't a big deal with very EFFICIENT drives being in the 290 yard range and once in a while i can turn up the speed in the 115mph range and hit the ball 300 yards about once a round.
Ask Tom Bartlett, i was the only one in Orlando that even came remotely close to catching up to ANY of his drives. we were on a 576 yard par 5 and i hit a cart measured 302 yard drive that left me 273 yards to the hole. Tom hit one 322 yards.
You'd be surprised how much proper ball compression and launch conditions can do to your drive. That's what the cleveland Hi-bore is all about, very high launchs (16-17* and 2200-2400rpm of spin) with very low spin to increase carries. However you can't really achieve great drives like this unless you swing at least in the 105mph range.
Professor Jim