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Swan-Song -- Math Rules


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On 8/22/2019 at 11:26 AM, Chris Davidson said:

The longer explanation:

I encourage you to try this on your own. These are my results as I am the same height 72.5” as JFK was. My wife took the measurements.

Stand up straight.

Find a dress shirt with a 1.5” collar measured from the back of the neck. Button it up.

Measure down from the collar top 5.75” and mark it on a piece of tape that sticks to the shirt.

Put the shirt on and button it up.

Measure from ground to mark.

Distance from ground = 61.75”

Measure to the top button center and subtract .875” and mark it on a piece of tape that sticks to the shirt.

Distance from ground = 60.125”

61.75 - 60.125 = 1.625”

Remove shirt, button it up and suspend it by pulling out on the shoulder areas to get it level and square.

Have a helper take their index fingers and press through the front/back of the shirt using the tape marks.

My marks become the same height.

Note the contradiction with the gif.

 

It looks like a rise/run ratio of 1.664"/7"(16.5°) was used, instead of the 1.625" (16.2°- close enough) I obtained through self measurements.

You can see by plugging this back into the SS/FBI-Dec5,1963 plat, they were looking at a different location for the SBT to work.

It was obvious via the extant zfilm, this would not fly.

Mr. SIMMONS. Yes; we did. We placed three targets, which were head and shoulder silhouettes, at distances of 175 feet, 240 feet, and 265 feet, and these distances are slant ranges from the window ledge of a tower which is about 30 feet high. We used three firers in an attempt to obtain hits on all three targets within as short a time interval as possible.

48649589988_18d675c454_o.jpg

 

 

 

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On 8/22/2019 at 1:53 PM, Chris Davidson said:

The inch designed building blocks the WC used were:

.875 + 2.665 = 3.54 + 10 + 39.24 = 52.78" = JFK's stated/testimony head height above the street while seated in the limo.

 

 

The other sequence of building blocks previously provided would consist of:

5.75" + 2.665" + 1.625" =  a total building block height of 10.04"

Start from JFK's collar top, moving downward, and apply these blocks(note the connecting points) to end up at the desired location.

Mr. SHANEYFELT. Yes; there was. After establishing this position, represented by frame 161, where the chalk mark was about to disappear under the tree, we established a point 10 inches below that as the actual point where President Kennedy would have had a chalk mark on his back or where the wound would have been if the car was 10 inches lower. And we rolled the car then sufficiently forward to reestablish the position that the chalk mark would be in at its last clear shot before going under the tree, based on this 10 inches, and this gave us frame 166 of the Zapruder film.

I'll do my own translation for you:

Our building block height range was directly related to the 10" chalk mark alteration. 

Ballistically, we were unable to connect the wounds between Connally and JFK (via the official snipers nest) without this alteration.

Furthermore, a 10" vertical alteration translates to a 15.25ft horizontal transfer onto Elm St.

Our official range of the SBT occurring between z210-225 (14.9ft) approx 1ft per 1frame, matches our 10" vertical alteration.

Our initial re-enactments used a range consisting of (the limo front end to JFK's position in the limo) a distance of 15.11". We felt this distance synced well with the 10" vertical alteration.

 

 

 

 

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On 8/22/2019 at 9:04 AM, Chris Davidson said:

If you are not interested in the forthcoming(more exact) explanation, but want the abbreviated version(gets you quite close) do this:

Use the 5.75" measurement down from the collar top, from there, move that mark up 3.54" take that difference of 2.21" and run it through a "run/rise" calculator using a torso of 7".

Add (3.13° - Elm St. slope)  and match that angle to a CE884 frame number.

 

 

The HSCA weaving begins with the answer to the question above:

Snipers nest 6th floor window sill = elev 490.9 - 423.07(shot #1 determination via SS/FBI- Dec1963 plat) = elev 67.83 - 3.27(coat chalk mark up from pavement)= 64.56ft

btw, 20.65° translates to 20°deg39' in keeping with CE884. 

48678194117_d0eeb84f55_o.png

 

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The HSCA document lists 14cm (first length translation) as the run between JFK's SBT wounds. This = 5.51"

My wife (female) who is slender at 5'10" tall has approx that same run.

My run (male) is 7".

If you run the same rise/run figures, but substitute 7" for 5.5", this is what you arrive at:

48678791487_0b2aac30f7_o.png

Refer to the approx last paragraph in the HSCA document for the match.

Remember, 5.75" down from the shirt collartop then back up 3.54" gives you a rise of 2.21".

 

 

 

 

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Referring back the HSCA document, the next conversion would be the distance stated between JFK's throat wound and Connally's back wound = 60cm = 23.62" 

The height between the two is 22.5cm = 8.86" (rounded from 8.858) for syncing comparisons, will explain/show in a little while.

48679553898_c7820085ee_o.png

This doesn't get them to their desired 25° mark, but the slant distance matches from a location 9ft higher (as stated in the HSCA document) than the sixth floor snipers nest:

48680104682_f02dd33b36_o.png

 

 

 

 

 

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16 hours ago, Chris Davidson said:

It would have been easier to acquire the 25° using WC documentation and my torso measurement(back of neck to throat) as part of the proper rise/run calculation:

29" - 7" = 22"

48680215467_48ba2e0514_o.png

48680056856_e7344f40c4_o.png

 

16 hours ago, Chris Davidson said:

Referring back the HSCA document, the next conversion would be the distance stated between JFK's throat wound and Connally's back wound = 60cm = 23.62" 

The height between the two is 22.5cm = 8.86" (rounded from 8.858) for syncing comparisons, will explain/show in a little while.

You can obtain the 8.86” height difference using other sources previously made available.

Sources include the building block height.

In case you couldn’t figure that out(building block height), the building block spans from JFK’s shirt collartop(back of neck) to T3.

On 9/3/2019 at 12:28 PM, Chris Davidson said:

5.75" + 2.665" + 1.625" =  a total building block height of 10.04"

Minus the height difference between this:

http://educationforum.ipbhost.com/topic/22692-swan-song-math-rules/?do=findComment&comment=405207

and this:

http://educationforum.ipbhost.com/topic/22692-swan-song-math-rules/?do=findComment&comment=390945

Would give you this:

http://educationforum.ipbhost.com/topic/22692-swan-song-math-rules/?do=findComment&comment=390993

 

 

 

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On 9/4/2019 at 9:37 AM, Chris Davidson said:

The HSCA weaving begins with the answer to the question above:

Snipers nest 6th floor window sill = elev 490.9 - 423.07(shot #1 determination via SS/FBI- Dec1963 plat) = elev 67.83 - 3.27(coat chalk mark up from pavement)= 64.56ft

btw, 20.65° translates to 20°deg39' in keeping with CE884. 

48678194117_d0eeb84f55_o.png

 

A bigger picture (imo) would look like this, where 13.54"(52.78 - 39.24) is the vertical span between the chalk mark and JFK's headtop and a 36" run includes 7" for Connally's torso:

490.9 - elev 423.07 = 67.83 - 3.27 = 64.56

13.54” rise   36”run = converted to ft = 
1.1283ft.      3ft      3.20ft =  Right Triangle Sides
1.1283 / 3.20 = .352.. x 183.08 = 64.552ft
64.56ft@20.65°(2.21"/7"- rise/run) = 183.06 slant

 

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