Posted by: Rich () on Sat Nov 1 21:25:43 2003

>>> The feeling I have, including the image I get in
> my head as compared to video of what
> happens,seems to confirm that,for me, in both
> overhand throw and hitting there is a similar
> sequence of arm action which likes to
> synchronize with lower body action(Nyman
> calls this synchronizing " mapping").Example
> of sequence and mapping:
>
> 1-back arm and lead leg internally rotate
> together as hip cocks
>
> 2-scap "load" (symmetrically in
> throwing,asymmetrically in hitting).for
> hitting,back scap(which includes shoulder
> socket/glenoid) pinches toward spine as lead
> leg goes out/abducts.The bat cocks toward
> the pitcher as a resulty."THT" has not
> started.Arm must also be stabilized in
> shoulder socket as part of same
> motion.Socket points more up for throwing
> and down for hitting.This means more lift then
> pinch for throwing,more pinch then lift(can't lift
> as much after pinching) for hitting(usually get
> elbow higher in throwing,although some
> hitters get the elbow and hands very high
> which ?can be a problem as Doug stated)
>
> 3-the back arm and front leg externally rotate
> together,this immediately followed by internal
> rotation of the lead arm begin torquing/
> uncocking the bat,prelaunch tht begins.
>
> 4-launch sequence starts with drop and tilt(lot
> going on here).load/unload happens with
> initial increased separation before launch
> actually gets underway(before tight connection
> established).During this time,pre-launch tht
> accelerates as back elbow continues down to
> slot and lead arm finishes internally rotating to
> get lead elbow fixed in plane of swing.Top
> hand stays back relative to shoulder,bottom
> hand/knob moves around(via last bit of lead
> arm internal rotation) to get on plane(see
> Nick's Bonds01 clip),for example.
>
> 5-launch-connection pulls knob via stable
> lead arm/bottom hand so torquing is
> uninterrupted through launch(no bat sliding/
> hand stabbing)
>
> This sequenec can for the most part be
> "reverse engineered" from looking at hitters
> that seem to have the quickest/most
> successful rotational swings. <<<
>
> Hi Tom
>
> Does your description of “scap load” produce any different bat-head acceleration than generated from Pre-launch and Top-Hand-Torque mechanics originated on this site?
>
> Hey Jack,
First i want to say that having your imput in these discussions is extremely valuable to us all... i'm guessing that the scap load does add speed to the bathead. as your elbow goes into the slot your still loaded. as the hips, torso, shoulders rotate in unison your still loaded. as you begin to apply BHT you begin to unload the back scap by adducting the shoulder socket with the pectoral muscle. this will pull the back elbow towards the pitcher 3" plus or minus and give the appearence of slight casting when in reality the elbow has remained at 90degrees. this pulling forward of the back shoulder and the pulling back of the front shoulder rotates the bat around the "oarlock" for the "final arc"... timing, who said timing? regards, rich