[John Graham]

You could build an iron byron to recreate Hinge Action Id imagine ........but it would have to have some #3 Accumulator Angle....... the grip in the left hand under the heal of the thumb pad instead of running up through the life line. ( like one does when putting ..........and why do we do that when we're putting? Because it deadens the send applied to the ball......by zeroing out the clubhead travel associated with any rolling of the left wrist. Giving every Hinge Action the clubhead travel of Angled Hinging .......which is zero) Its interesting to me that golfers commonly adopt this putting grip , sometimes even when chipping without any knowledge of why .......but the physics of it is there for the ball to react to.

If you want more info on #3 angle check out Ted Forts golf channel video......there's a part where he talks about "distal" acceleration as I recall. Imagine doing that with a putting grip and notice how it would accelerate the clubhead at all.

OB.

Interesting point.

If I remember correctly, the more #3 accumulator the more head travel for any forearm rotation. Am I saying that right?

So, for horizontal hinging which employs more #3 the club head is accelerating more then with vertical hinging?

Am I correct so far?

Would that mean that if I can accelerate the club more over a shorter time frame that I get more umf than going at a constant speed?

I hope I haven't just confused myself. Is this what you meant with your car analogy?

JG