It's pure physics/biomechanics:
1. Working from the ground up ensures muscles work in the right way at the right time - we accumulate energy through legs/trunk/arms and pass from link to link down the muscular chain ensuring we inject maximum energy into body rotation.
2. Keeping the clubhead close reduces resistance to body rotation hence maximising rotational speed. A tightrope walker rotates (overbalances) slowly - and stays on the wire - if he carries a long pole. We also rotate slowly if we allow our long pole - the club - to stick out. We need to keep it close (tight swing radius) to rotate faster... It's like driving a car - there's an accelerator (muscular chain) and a brake (swing tight radius). We need to press the accelerator and stay off the brake...
3. Passive release works through a 'double pendulum' action - it's too complicated to explain here but it's the reason why 'rhythm' is so crucial. See this link to see a double pendulum in action:
That's how we get effortless power.... Hope it helps.
I am going to need to digest the equations for a bit, but here are my distances using a relaxed swing.
260 yard driver left handed
235 yard 3 wood left handed
225 3 hybrid left handed
200 5 wood
175 yard 4 hybrid left handed, hitting really high with this one, like a wedge
185 yard 4 hybrid left handed, hitting lower but need to practice this more to be more consistent with this shot.
3 iron blade left handed (finally can hit at least 3/4 swing) 175, really low shots. Not normal use.
4 iron blade left handed 165
5 iron blade 155
6 iron blade 145
7 iron blade 135
8 iron blade 125, duff at least 1/3 of shots
9 iron blade 110, I hit this one too lightly no confidence with higher lofts
Pw blade 100, no confidence with higher lofts
Do my irons seem normal relative to my woods, am I overhitting my woods and hybrids? Or do they seem short?
In looking at all the other distances on this thread, all my irons are really short. On top of that, my 9 iron is really short. I end up needing an 8 to PW for par 3 courses.
The other thing is that all my iron shots are these parabolic trajectories, then just kind of gently land. When I see other people hitting at the range their shots are high, strong and they make a hissing sound. They land hard and have lots of spin.
I have no power.
How do I get it?