Zapruder Film Exposed

[Chris Davidson]

btw,

When using the 18.3/24 ratio and vice-versa, it helps to apply them at the appropriate starting points.

For instance, the limo on film at Z133.

74 frames to Z207, a back shot.

74 x .7625 (18.3/24 ratio) = 56.4 frames

Z133 + 56.4 = Z189.4 or Z190 rounded to next whole frame.

So, if you think the shot that occurred at Z207 is correct, that's the 24/18.3 version.

If you believe the Z190 shot, that's the 18.3/24 version.

chris

[Thomas Graves]

btw,

When using the 18.3/24 ratio and vice-versa, it helps to apply them at the appropriate starting points.

For instance, the limo on film at Z133.

74 frames to Z207, a back shot.

74 x .7625 (18.3/24 ratio) = 56.4 frames

Z133 + 56.4 = Z189.4 or Z190 rounded to next whole frame.

So, if you think the shot that occurred at Z207 is correct, that's the 24/18.3 version.

If you believe the Z190 shot, that's the 18.3/24 version.

chris

[emphasis added by T. Graves]

Chris,

Now we're getting somewhere!

Keep up the good work.

--Tommy

[Chris Davidson]

As a follow up, just imagine they have placed Altgens photo position parallel to the Z255 limo spot, on the curb.

If Altgens thinks this is his photo position, where do you think (farther east up Elm) they are trying to convince him the limo was at the time he simultaneously snapped his photo in accordance with a shot?

chris

Earlier, I introduced two ratios to keep in mind when trying to wade through this.

18.3/24 = .7625 and 24/18.3 = 1.31

The frame span from Z168-255 is 87 frames, with Z168 being the starting point from the CE884 data chart.

87 frames x .7625 = 66.3 frames

If I add those 66.3 frames to Z168, I'm now at Z234.3 or Z235 rounded to next whole frame.

So, using an 18.3frames per scenario, starting at Z168, the Altgens described shot circa Z255 is at approx Z235.

Dr Robert Shaw please.

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

Referring to Dr.Shaw's testimony above, I would have asked these direct questions to help Specter clarify it for the rest of us.

1. How many Zapruder movies did you view?

2. What was the trajectory?

3. What physical location in the TSBD did it come from?

4. What actual frame did you place at 236?

5. Would you be more inclined to place the shot from the west end of the TSBD, if the downward angle at 26 degrees aligned with a location farther west down Elm St than the frame 236 location you have chosen? Hypothetically of course!!!

chris

[Chris Davidson]

Mr. SPECTER. I ask you to state what that album depicts.

Mr. SHANEYFELT. This is an album that I prepared of black and white photographs made of the majority of the frames in the Zapruder film----
Mr. SPECTER. Starting with what frame number?
Mr. SHANEYFELT. Starting with frame 171, going through frame 334.
Mr. SPECTER. And why did you start with frame 171?
Mr. SHANEYFELT. This is the frame that the slides start from. This was an arbitrary frame number that was decided on as being far enough back to include the area that we wanted to study.
Mr. SPECTER. Is that a frame where President Kennedy comes into full view after the motorcade turns left off of Houston onto Elm Street?
Mr. SHANEYFELT. Yes, yes.
Mr. SPECTER. And how was the ending point of that frame sequence, being No. 334, fixed?
Mr. SHANEYFELT. It was fixed as several frames past the shot that hit the President in the head. Frame 313 is the frame showing the shot to the President's head, and it ends at 334.

I think Shaneyfelt needs a little help with his testimony. Let me translate.

Frame 171 was the last frame used having the limo travel at 3.74mph (CE884- Z168-171entry), starting from Position A.

Keep the above in mind over these next few posts.

Mr. KELLEY. The officials at Hess Eisenhardt, who have the original plans of the President's car, conducted a test to ascertain how high from the ground a person 72 1/2 inches would be seated in this car before its modification. And

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Page 133

it was ascertained that the person would be 52.78 inches from the ground--that is, taking into consideration the flexion of the tires, the flexion of the cushions that were on the car at the time.

Mr. SPECTER. When you say 52.78 inches, which individual would that be? Mr. KELLEY. That would be the President.
Mr. SPECTER. And what part of his body?

Mr. KELLEY. The top of the head would be 52.78 inches from the ground. When Mr. Anderton was placed in the followup car, it was found that the top of his head was 62 inches from the ground. There was an adjustment made so that there would be--- the stand-in for Governor Connally would be in relatively the same position, taking into consideration the 3-inch difference in the jump seat and the 2-inch difference in his height.

chris

[Chris Davidson]

TSBD= Station# 2+50

CE884 Z171= Station# 3+30.1

Distance = 80.1ft

Conversion equation: 18.3ft horizontal/1ft vertical

80.1ft/18.3ft = vertical change of 4.37 ft

4.37ft x 12 inches = 52.44 inches

Refer back to JFK determined head height above ground.

chris

[Chris Davidson]

TSBD 6th floor window ledge = 60.7ft

60.7ft + 4.37ft ( Z171 measured from street ) = 65.07ft

Survey Zframe 207 (measured to the top of JFK's head) = 65.05ft

chris

[Chris Davidson]

I've always thought it was easier to cut through the WC bs and just start with a measurement to the ground from point "a" to point "b"

For instance:

Zframe 207 = Station# 3+71.1 = 121.1ft from Station# 2+50 = street location aligned with the WC snipers nest = Elevation 429.7

Formula for 3.13 degree Elm St descent = 18.3ft horizontal/1ft vertical

121.1/18.3ft = 6.61ft vertical change 429.7 - 6.61ft vertical change = Elevation 423.09

chris

[Chris Davidson]

Here is a more expanded version of Z207. It now includes the calculation for H.I.

H.I. is a term used in surveying which means "Height of Instrument"

The instrument in this case is the surveyors theodolite.

For Z207, the "H.I." was 5.41ft above the ground when measuring angles back to the 6th floor (60.7ft ledge)TSBD.

It was then dropped down 2.14ft (height determined of rifle end. above 6th floor ledge).

And, in this case, is supposed to represent the top of JFK's head.

After that drop of 2.14ft. the angle recorded at 21deg 50min equals the CE884 entry for Z207.

Which means, the distance from the top of JFK's head, to the ground, is supposed to equal 3.27ft (see previous testimony from Mr.Kelley for contradiction).

Elevation 427.02 - 3.27ft = 423.75=ground

Difference between Elevation 423.09 (direct ground measure, previous post) and 423.75 WC shenanigans = .66ft

.66ft x18.3ft = 12ft difference.

Another part of pushing events eastward, back up Elm St.

chris

Mr. EISENBERG - Could you show the lead in that diagram, Mr. Frazier?

Mr. FRAZIER - In Commission Exhibit 556, it shows a triangular diagram with the vertical line on the left-hand side illustrating the height of the building. The figures of a 60-foot building height plus--

Mr. EISENBERG - That is height of the muzzle above the ground?

Mr. FRAZIER - No--window sill--60-foot window sill height above the ground, with an assumed 2- foot height in addition to accommodate the height of the rifle above the possible. the possible height of the rifle above the window sill.

The horizontal line extends outward from the building to a small rectangular block, and then a sloping line illustrates a 5-foot slope from the 175-foot point to the 265-foot point.

[Chris Davidson]

And,

The previous post would rear its ugly head moving down the street as displayed on the SS/FBI plat.

Shot#2 location, via trajectory, was placed at Elevation 419.07. Whereas, it was plotted at Elevation 419.70

Difference between 419.70 and 419.07 = .63 elevation x 18.3ft = 11.5ft

See previous post for comparison difference of 11.5/12ft

chris

[Chris Davidson]

Continued from Robert M's topic.

I was hoping someone would look at CE560 and calculate the total frames for the 90ft distance at 5.5 seconds.

At 18.3 frames per sec that would equal 100 frames, not rounded to the next whole frame.

What are the odds that the total frames determined for that 90ft span (distance between WC 1st and 3rd shot - sequence1 of dual 3 shot scenario)) would be a convenient 100 frames?

Within CE560, the LOS distances given from rifle to JFK are 1st shot 175ft and 3rd shot 265ft. Those would be matches for Zframe 207 and Zframe 313 via CE884.

The difference in frame count is 106 not 100.

chris

[Chris Davidson]

Shot 1 2 3

Shot 1 2 3

I'll work with the entry from CE560 and the WC designated time of 5.5 seconds.

100 frames @ 90ft @ 5.5seconds = 11.13mph = Shot 1 2 3

100 frames @ 30.2ft @ 5.5seconds = 3.74mph = Shot 1 2 3

200 frames @ 120.2ft @18.3frames per sec = 7.43mph

chris

Edited December 26, 2014 by Chris Davidson

[Chris Davidson]

And,

If I want to exact the time for 100 frames/18.3 frames per sec = 5.46 seconds

Then (2) 100 frame scenarios @ 5.46 seconds = a total time of 10.92 seconds.

120.2ft/10.92 seconds = 7.48mph

3.74mph x 2 = 7.48mph

chris

[Chris Davidson]

What ratios were important?

166frames/100ft = 5/3 ratio See attached

Look at CE884 and what is the ratio for frames in accordance with Z161-166 (5frames) to Z168-171 (3frames) which directly relate to 3.74mph.

In my SS/Z film comparison, If I reduce total 218 frames traveled by a 18.3/24 ratio (.7625), I end up with 166.2frames.

196.5ft-30.2ft(distance from Z313-Z351)=166.3ft.

Added on edit: What did I remove from above: approx 30ft and 50frames a 3/5 ratio 5/3 ratio

chris

200 frames/120ft = 5(frames)/3(ft) ratio

See previous post also.

chris

[Chris Davidson]

And,

If I want to exact the time for 100 frames/18.3 frames per sec = 5.46 seconds

Then (2) 100 frame scenarios @ 5.46 seconds = a total time of 10.92 seconds.

120.2ft/10.92 seconds = 7.48mph

3.74mph x 2 = 7.48mph

chris

169frames @ .3ft = 50.7ft

169frames@18.3frames per sec = 9.23sec

50.7ft/9.23sec = 5.49ft per sec =3.74mph

It's fairly obvious from Towners film at Position A and on, and from Z133 on, that the limo was never traveling anywhere close to 3.74 mph during these segments.

We know from Position A to Z168 is 50.7ft.

From Z168 to Z313(145 frames) is 136.1ft

So, from Position A to Z313 = 186.8ft.

311 frames(145+166) @18.3 frames per sec@186.8ft = 7.48 mph average

This would be an average speed match for the 2 (100 frame scenario above).