Great post Mathew!
I've looked up Tettsui Uchi and it appears to be concerned with the red dot section on the left hand. How does this red dot relate to the flat inclined plane?
Using the compass/dial, when does it make contact? When does it cease contact?
Perhaps the single greatest image from Hogan's 5 Lessons (page 102), indeed one of the most important concepts in all his teaching IMO.
__________________
"Support the On Plane Swinging Force in Balance"
"we have no friends, we have no enemies, we have only teachers"
Simplicity buffs, see 5-0, 1-L, 2-0 A and B 10-2-B, 4-D, 6B-1D, 6-B-3-0-1, 6-C-1, 6-E-2
Depending on - impact fix alignments/grip type/axis tilt/ball position/desired result - impact at station 7 would provide more clubHEAD margin for error and more support for impact, especially for iron play. In short, how you position a machine using a particular pattern for a given result vs the total motion of that machine.
__________________
"Support the On Plane Swinging Force in Balance"
"we have no friends, we have no enemies, we have only teachers"
Simplicity buffs, see 5-0, 1-L, 2-0 A and B 10-2-B, 4-D, 6B-1D, 6-B-3-0-1, 6-C-1, 6-E-2
Depending on - impact fix alignments/grip type/axis tilt/ball position/desired result - impact at station 7 would provide more clubHEAD margin for error and more support for impact, especially for iron play. In short, how you position a machine using a particular pattern for a given result vs the total motion of that machine.
But if Impact were at 7 and the clubface were in line with the wrist and not open . . . you got yourself a Clubface HOOK.
On page 102 Ben Hogan's diagram shows impact at station 6.
In the diagram on page 103 the left hand appears at or close to low point before the clubhead has reached the ball.