Re the clubhead "overtaking" the hands with Rhythm (flat left wrist) assumed. IMO a key key concept for the guy on the tee. With a flat left wrist the entire left arm and club , (the Primary Lever) moves as one, rolls as one. The clubhead, the hands the left arm have the same RPM but different surface speeds given their distance from the centre of their motion, the left shoulder.
From the caddy view the clubhead passes the hands (somewhere around or after impact, depending). From the players point of view the clubhead passes the hands. But imagine a camera attached to the left shoulder which looks directly down the inline left arm and club and rolls with the Primary Lever as it rolls....... this camera would not see the clubhead as passing the hands!!!! If you played its video back you would see the whole world spinning around the inline Primary Lever .... inline Left Arm , Left Hand , shaft and clubhead. The world overtaking the intact Primary Lever if you will.
Break the left wrist and the clubhead does pass the hands , from any perspective. My grandfather used say " Well, it all depends where you're standing when your pictures took!".
It is important to know (for me) Is the camera a vertical camera for all hinges or is the camera attached to the hinge pin?
The results, to me, will be VERY different for each hinge action.
This Rhythm question may expand your circle geometry thread because it is part of the circle geometry but the "startionary "head"" [more
so] and Balance [less so] are also part of the geometry so I use caution.
Camera attached to upper most part of left arm under the hinge so to speak.
Rather than interject my opinion I will ask a rhetorical question.
With a flat left hand we have the same RPM. For all hinges, but the "surface speed" or ratio of hand speed to clubhead speed is greatest for horixontal hinging, angled hinging is in the middle and the smallest retio for "true" vertical hinge. But if the ratio's are not the same how could it look the same from the center of rotation? It can't. So it won't?
Rather than interject my opinion I will ask a rhetorical question.
With a flat left hand we have the same RPM. For all hinges, but the "surface speed" or ratio of hand speed to clubhead speed is greatest for horixontal hinging, angled hinging is in the middle and the smallest retio for "true" vertical hinge. But if the ratio's are not the same how could it look the same from the center of rotation? It can't. So it won't?
Interesting, Hummm?
HB
The ratios for HH and AH are the same if the left wrist is level at impact and completely uncocked just past separation, in which case the hand and head speeds are not affected by Hinging type, because the full(HH) or half(AH) rolling wrist isn't speeding up the sweetspot through impact, but just rotating the shaft around it. The only thing HH & AH Hinging influences is face angle at separation. HH is more powerful only because it eliminates the layback component of AH through the impact interval, and so gives better compression, and not because the club head is faster.
The ratios for HH and AH are the same if the left wrist is level at impact and completely uncocked just past separation, in which case the hand and head speeds are not affected by Hinging type, because the full(HH) or half(AH) rolling wrist isn't speeding up the sweetspot through impact, but just rotating the shaft around it. The only thing HH & AH Hinging influences is face angle at separation. HH is more powerful only because it eliminates the layback component of AH through the impact interval, and so gives better compression, and not because the club head is faster.
but the "surface speed" or ratio of hand speed to clubhead speed
HB
IMO when Homer says "surface speed" he is not referring to the ratio of hand speed to clubhead speed. Surface speed in the context of Rhythm relates to for example a spoke on a wheel. Any point on the spoke will have the same RPM but the further you get away from the centre along the spoke the greater the surface speed. ie the clubhead given a flat left wrist will be travelling at the same RPM's about the centre as the hands but the clubhead will have a faster surface speed .
HInging will for sure have its effects on the surface speed of the clubhead given any #3 angle but the clubhead for vertical is still moving faster than the hands given a flat left wrist , Rhythm.
IMO when Homer says "surface speed" he is not referring to the ratio of hand speed to clubhead speed. Surface speed in the context of Rhythm relates to for example a spoke on a wheel. Any point on the spoke will have the same RPM but the further you get away from the centre along the spoke the greater the surface speed. ie the clubhead given a flat left wrist will be travelling at the same RPM's about the centre as the hands but the clubhead will have a faster surface speed .
HInging will for sure have its effects on the surface speed of the clubhead given any #3 angle but the clubhead for vertical is still moving faster than the hands given a flat left wrist , Rhythm.
The KEY to understanding this lies in 2-G paragraphs 6 and 7- mainly 7. Note that the BASIC plane -For each of the hinges- is important to understanding this concept. RHYTHM and VERTICAL to the BASIC plane associated with the chosen hinge. That produces the "ratio".
The KEY to understanding this lies in 2-G paragraphs 6 and 7- mainly 7. Note that the BASIC plane -For each of the hinges- is important to understanding this concept. RHYTHM and VERTICAL to the BASIC plane associated with the chosen hinge. That produces the "ratio".
HB
OK All Hinge Actions take on the characteristics of Angled when #3 is zeroed both in terms of Travel and Rhythm. So we have a term , Rhythm with several meanings, again.
BTW if anyone is following along .... a "Flat, Level and Vertical" Left Hand is Vertical to the selected Hinge Actions associated basic Plane .... Horizontal , Vertical or anything in between aka Angled.
This relates to setting up to a ball for shot shaping , in that when you put the ball back in your stance , your hands, more correctly your entire Primary Lever (left arm and club) must move back as well while maintaining the desired alignment to one of the basic planes. Its common for guys to keep their wrist watch, say ,pointing at the target as the ball moves back in the stance. This would only hold for Vertical Hinging!!!!
For instance, assuming Horizontal Hinging and Grip Rotation for a ball played back in the stance by a Manipulated Hands Swinger or a Hitter (almost everybody):
As you move the ball back in the stance, along the Arc of Approach , the Primary Lever must move back as well , while maintaining the left hands Vertical to the Horizontal Basic Plane Alignment. ie your wrist watch is pointing out to the rigth somewhat. Then without changing the hands alignment the handle is rotated in your loosened hands to square the clubface to the Target Line / Impact Plane Line. Draw shot tendency , but mitigated by Inclined Plane Angle since steeper planes take out some of the Divergence between face and clubhead path . OUT becomes DOWN in other words as Plane Angles Steepen. The axis of the balls rotation becomes less tilted. aka curve spin becomes back spin.
Hybrid Mode
