Re: Iron Length/Lie Angle
Originally Posted by upah
Yes, but by your logic, a driver and a lob wedge would have the same lie angle, right? But they don't. Clearly, there's something going on here.
The length of A (hands to ground) we're assuming stays fairly constant, and we're assuming there's no toe down effect. As the club (C) gets longer, the length of B also must get longer. If a Pitching wedge has a 64° lie angle, and a 35.5" length, the butt will be 31.9" off the ground at impact, and the head 15.56" from the butt.
Now, if we take a 45" driver, the length of A (hands above the ground) stays the same. Side C is now 45". So, now the hands are still 31.9" off the ground, but the club is 45" long instead of 35.5". The new lie angle must be 45°, and the length of side B is now 31.73" long. Had the club been the same length, it would have been 19° too upright. Now, in practice, the hands at address change. Drivers have lie angles closer to 55°.
To answer the original question, assuming your iron was of some standard set, in theory, it would be 6° too upright, but obviously that's not the answer. I imagine clubmakers have a way to measure, but I'm not sure. A lie board is your best bet.