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Everything posted by Chris Davidson
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Swan-Song -- Math Rules
Chris Davidson replied to Chris Davidson's topic in JFK Assassination Debate
Paul Mandel from Life magazine Dec6, 1963 will give you an idea of the version he was viewing. -
Swan-Song -- Math Rules
Chris Davidson replied to Chris Davidson's topic in JFK Assassination Debate
Let's add Charles Brehm for help with some of the distance. Tim's average true speed(2.33mph + 2.06 + 2.13) for the limo from extant z291-z317 = .174ft per frame Starting with Z291 to z313 = 22frames I'll use 48 frames(the reason in next post) as my real total frame count between z291-z313 .174ft per frame x 48 frames = 8.35ft 8.35ft + 2.379ft(plotting of headshot farther West down Elm, until Specter moves it that distance farther East and it's labeled as extant z313) = 10.729ft LIsten to Brehm and count the shots starting slightly before z291. BREHM expressed his opinion that between the first and third shots, the President's car only seemed to move 10 or 12 feet. It seemed to him that the automobile almost came to a halt after the first shot, but of this he is not certain. After the third shot, the car in which the President was riding increased its speed and went under the freeway overpass and out of his sight. -
Swan-Song -- Math Rules
Chris Davidson replied to Chris Davidson's topic in JFK Assassination Debate
Now add the FBI's Webb analysis(credit Gary Murr) to Tim's frame removal study(z291+) and my ITEK Nix bump at the Z equivalent of z289-z293. This should provide a fairly accurate indicator as to when a major excision was beginning. imo -
Swan-Song -- Math Rules
Chris Davidson replied to Chris Davidson's topic in JFK Assassination Debate
Sorry If I wasn't more clear on what the gifs represent. The previous two gifs concern only Glover and her jogging cohort in the background. Comparison purposes only, for what's coming up. That which relates to the current excision of frames discussion. -
Swan-Song -- Math Rules
Chris Davidson replied to Chris Davidson's topic in JFK Assassination Debate
We can now incorporate more of Tim's work in relationship to my speed bump comparison from ITEK. This was very helpful as I could only plot an average speed from extant z276-z301 of 9.71mph. With that said, the average reduced speed between extant z276-z301(9.71mph) and extant z301- z313(7.47mph)= was 2.24mph. Sound familiar!!! -
Swan-Song -- Math Rules
Chris Davidson replied to Chris Davidson's topic in JFK Assassination Debate
David, That gif should give you a side x side speed comparison of walking vs jogging. This gif, overlays that difference for you. -
Swan-Song -- Math Rules
Chris Davidson replied to Chris Davidson's topic in JFK Assassination Debate
I recently came across a publication by Tim Nicholson. If interested in more of his work, you can contact him at: tim.a.nicholson@gmail.com Tim is gracious enough to allow me to post excerpts from one of his academia papers. He used a more sophisticated method of determining frame removal and here is one of those excerpts pertaining to the above. I believe we've reached mutual support. -
Swan-Song -- Math Rules
Chris Davidson replied to Chris Davidson's topic in JFK Assassination Debate
In case you don't understand what is being shown to you, here is an easier way to look at it: 2.24mph increase in speed = 1 frame removed, and so on and so on. You can check it a couple of ways related to the link above and the CE884 .3ft per frame listing of z168-z171 7.2ft x .3 = 2.16ft 7.2ft - 2.16ft = 5.04ft 5.04ft / 12 frames = .42ft per frame .42 x 18.3fps = 7.686ft per second / 1.47(1mph) = 5.228mph + 2.24 = 7.468mph OR 2.24mph x 3.333frames = 7.466mph The sequence starts sooner than z301, but I think you get the picture now. -
Swan-Song -- Math Rules
Chris Davidson replied to Chris Davidson's topic in JFK Assassination Debate
We are making great strides though. -
Swan-Song -- Math Rules
Chris Davidson replied to Chris Davidson's topic in JFK Assassination Debate
A continuation from ITEK's tipoff: http://educationforum.ipbhost.com/topic/26525-unveiling-the-limo-stop/?do=findComment&comment=420270 -
Swan-Song -- Math Rules
Chris Davidson replied to Chris Davidson's topic in JFK Assassination Debate
A 18.3fps film with frames removed via a slowdown by the limo. The following insight provided: .3ft (3.74mph) per frame /.18ft(2.24mph) per frame = 1.66… / 1 ratio 1.66 - 1 = .66frames 4frames + .66 = 4.66 frames 3.5ft / 4.66 frames = .751ft per frame .751 x 18.3 = 13.744ft per sec /1.47(1mph) = 9.35mph 9.35mph x (18/18.3) = 9.2mph 9.2mph = ITEK = PAYDIRT .3 / 1.666... = .18 .66... x 1.5 =1 2.24mph / 7.47mph = .3 x (3.33…) = 1 whole frame 3.33 frames - 1frame = 2.33frames 18.3-2.33 frames = 16fps = PAYDIRT - Premature to assume that the speed reduction ratio translates as the same fps reduced ratio, at this time. -
The straight line distance between Brennan and the Houston St curb is 20ft. Houston St curb line was the start of Robert West measurements at Station# 234.5. That puts Brennan at approx Station# 255.0(little radius thrown in) I would suggest obtaining extant CE884 for further distance/frame# comparisons to what Brennan described in his first day affidavit, keeping in mind that JFK within the limo was the measuring mark.
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Richard, I think you nailed it. The 6th floor of the DalTex building is 10ft 10.5ft higher than the TSBD 6th floor which is 60.7ft at the window sill. Brennan said approx 75 ft high = 70ft + rifle height of someone standing up aiming. He also describes the 2nd row of windows from the top which is also the DalTex 6th floor. The frame is from the SS recreation where they are actually filming from within the car down on Elm St, giving you a LOS perspective to that window http://educationforum.ipbhost.com/topic/26636-did-even-the-warren-commission-believe-howard-brennan/?do=findComment&comment=425477
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Swan-Song -- Math Rules
Chris Davidson replied to Chris Davidson's topic in JFK Assassination Debate
Nice view for a back shot. https://drive.google.com/file/d/1d61nVKY4YejDOnzdL1w9RJkW0ZtqkEw1/view?usp=sharing -
What could Lee Bower see from his tower?
Chris Davidson replied to John Butler's topic in JFK Assassination Debate
https://drive.google.com/file/d/1torIDBURR5hN_sgySlv5OoOvrBFnx0JW/view?usp=sharing -
What could Lee Bower see from his tower?
Chris Davidson replied to John Butler's topic in JFK Assassination Debate
John, I didn't say or bury anything about what Bower's could/couldn't see. That's me on the pedestal filming (inset). Fortunately at some point, my brother photographed me filming. Somewhat of a reverse perspective. -
What could Lee Bower see from his tower?
Chris Davidson replied to John Butler's topic in JFK Assassination Debate
Richard, You are correct. The frame on the right I shot (one of many filming passes) while on the pedestal using a B/H 414 on normal lens setting. The bush density/height would vary throughout the years. -
A new proposal re the JFK shots and wounds
Chris Davidson replied to Greg Doudna's topic in JFK Assassination Debate
And, complimentary to David's info: http://educationforum.ipbhost.com/topic/26646-nbc-archives-first-announcements-of-jfk-assassination/?do=findComment&comment=425369 -
A new proposal re the JFK shots and wounds
Chris Davidson replied to Greg Doudna's topic in JFK Assassination Debate
The relevance of one shot (from behind) in relationship to the EOP. imo http://educationforum.ipbhost.com/topic/24596-shooter-location/?do=findComment&comment=369883 -
First announcements of the throat wound. What happened to the description of the fatal head wound/s? Whoever passed on this information apparently(by connecting it as one shot) viewed a smaller entrance hole in front and larger exit hole in back. If this was reported after the tracheotomy was performed, I would have expected the opposite(back wound smaller than the throat wound). Two separate holes conflated. https://drive.google.com/file/d/16LxwI_RjbH_1YVrHk-Tm4w_9WhKuJ0il/view?usp=sharing https://drive.google.com/file/d/16LxwI_RjbH_1YVrHk-Tm4w_9WhKuJ0il/view?usp=sharing
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If CE477/8 represents where he thought he was, I'd suggest using the wall block openings as a measuring tool for the distance between the two locations with a minor radius length added in. The lamp-post at left and my red arrow would be a similar distance. Plotting Bell's LOS pretty much agrees with this photo that puts him directly across from the western edge of the first window opening in the TSBD.