The SS and FBI place 4 shots in and around Z313 - just not Z313

[Chris Davidson]

Remember, the SS video frames from the previous posts were created in the first week of Dec 1963.

Dr.Shaw's testimony from March and/or April of 1964:

Mr. SPECTER - Dr. Shaw, have you had an opportunity today here in the Cornmission building to view the movies which we referred to as the Zapruder movies and the slides taken from these movies?
Dr. SHAW - Yes.
Mr. SPECTER - And what, if any, light did those movies shed on your evaluation and opinions on this matter with respect to the wounds of the Governor?
Dr. SHAW - Well, my main interest was to try to place the time that the Governor was struck by the bullet which inflicted the wound on his chest in reference to the sequence of the three shots, as has been described to us.
(At this point the Chief Justice entered the hearing room.)
This meant trying to carefully examine the position of the Governor's body in the car so that it would fall in line with what we knew the trajectory must be for this bullet coming from the point where it has been indicated it did come from. And in trying to place this actual frame that these frames are numbered when the Governor was hit, my opinion was that it was frame number, let's see, I think it was No. 36.
Mr. SPECTER - 236?
Dr. SHAW - 236, give or take 1 or 2 frames. It was right in 35, 36, 37, perhaps.

[Chris Davidson]

The attachment is from Tom Purvis.

The term "flat-line distance" refers to the distance from the (bottom of the TSBD snipers nest, out to the designated point of bullet impact on Elm St).

Or, in terms of the right-triangle diagrams previously provided, the "Base a" measurement.

chris

More from Tom Purvis regarding shot#1.





This flat-line distance equals JFK's position in extant zframe 207. If you look closely, it was labeled very lightly on the 1963SS/1964FBI plat.

Approx 123ft. from Zapruder is extant Z207.

[David Josephs]

Thanks so much Chris..

Great info and analysis
DJ

[Chris Davidson]

The attachment is from Tom Purvis.

The term "flat-line distance" refers to the distance from the (bottom of the TSBD snipers nest, out to the designated point of bullet impact on Elm St).

Or, in terms of the right-triangle diagrams previously provided, the "Base a" measurement.

chris

More from Tom Purvis regarding shot#1.





This flat-line distance equals JFK's position in extant zframe 207. If you look closely, it was labeled very lightly on the 1963SS/1964FBI plat.

Approx 123ft. from Zapruder is extant Z207.

The difference between extant frame 207 and the shot1 designation on the SS/FBI plat is 10.2ft.
Those designations equate to Station# 3+71.1 and 3+81.3
TomP. stated that the location of the X#1 on the plat, did not change between the SS created plat in Dec 1963 and the FBI revised SS plat of Feb 7, 1964.

The pylon, is supposed to represent (shot1-JFK's position within the limo) in the SS recreation video could not have been positioned to represent either of the above shots. See previous pylon placement..
That pylon which is somewhere near the extant z235 frame equals Station# 3+96.8
The difference between the limo front and JFK's position in the limo is 15.25ft.
The difference between these 2 locations would put JFK's position at Station# 3+81.55
This gets you quite close to the X#1 mark on the plat at 3+81.3
chris

[Chris Davidson]

Thanks so much Chris..

Great info and analysis
DJ

Thanks David,

Just a brief chronological list:

Nov25, 1963 Time-Life survey and re-enactment.
Dec 2-5,1963 SS Re-enactment with most extensive survey work completed Dec5
Feb7, 1964 FBI Re-enactment with limited survey work completed

chris

[Chris Davidson]

Any questions feel free to ask.

Even though Mandel lists 170ft as the first shot distance instead of 167, I'm guessing he rounded it off.

chris

[Chris Davidson]

btw,

The frame span I posted (previous graphic) from CE884 of extant z186-z207 equals a 20.3ft span over 21 frames.

20.3/21=.966ft per frame traveled.

It takes 4 frames to get from z186-z190.

4 x .966 = 3.864ft

Z186 = Station# 3+50.8 + (3.86ft- 4 frames=z190)=Station# 3+54.66

This puts the possible Breneman vertical error within approx 1inch of where z190 was defined by CE884.

354.74 vs. 354.66 = .08ft=almost 1 inch

Among the other evolving info.

chris

[Chris Davidson]

This flat-line distance equals JFK's position in extant zframe 207. If you look closely, it was labeled very lightly on the 1963SS/1964FBI plat.




There is a determination of a shot, via Time-Life, at extant z207 street location.

The WC CE884 zframes 207/208 has a rifle angle to JFK's head (3.27ft above the street) between 21degrees34minutes & 21degrees 50 minutes.

The SS plat shows a very similar angle (21.63=21degrees38minutes) which would land between the WC 207/208 span. Remember, the SS plotting of shot#1 was to the street, not to JFK's head height (3.27ft above pavement) at the head shot.

The plotting of the first shot on the SS plat would actually be closer to extant zframe 217 using CE884 as a measuring tool.

chris

[Steve Thompson]

David - I know this is unlikely, but...is it possible that the 3 white strings being extended from the TSBD to Elm Street were actually intended to denote the position of the lead motorcade car when each of the 3 shots were taken, and not SS-100-X ?

[David Josephs]

David - I know this is unlikely, but...is it possible that the 3 white strings being extended from the TSBD to Elm Street were actually intended to denote the position of the lead motorcade car when each of the 3 shots were taken, and not SS-100-X ?

"Positions of the PRESIDENTIAL CAR" when the shots were fired... and then they are gone when added as CE879 in the WCR...

DJ

The problem that Chris illustrates is how they were able to make it virtually impossible to recreate the scene using the mathematical data provided...

Front bumper, Back Bumper, JFK's position, Street Level, JFK's Head height, Flat-line, Distance to window... etc.... by interchanging these without identifying them creates problems...

CE884(sic) says the measurements are to the back bumper... Actually CE875