Chris Davidson's Zapruder film Re-enactment.

[Chris Davidson]

Here's the basis for Davidson's "66% of the frames removed" -
Above is the diorama that the FBI made. The car is further down than we know where it was. But according to Davidson, the FBI was sinister with this model. Because they had the car further down, they then had to remove frames from the Z film in order to make everything sync up.

Actually, it all started with this:
The limo traveling 2.24(public version CE884) or 3.74mph(CE884 version on final WC plat may1964) below.

The diorama provided a distance for us.

[Chris Davidson]

Do you think there was another camera man involved?

[Chris Davidson]

Wonder what would happen if I compared similar LOS's with the extant Zfilm Stemmons sign splice?

[Chris Davidson]

Actually, it all started with this:
The limo traveling 2.24(public version CE884) or 3.74mph(CE884 version on final WC plat may1964) below.

The diorama provided a distance for us.

When you create speed and distance reductions, you have to adjust frame counts too:
One reason why the WC created different versions of CE884, with the same physical locations (z161/168 - z166/171) applied to different frame numbers.

[Royell Storing]

   The question surrounding the speed of the JFK Limo is also tied into that same Limo: (1) Not being filmed turning onto Elm St and (2) Suddenly Popping into the Z film already traveling down Elm St. Both Zapruder and Sitzman said they could see the Limo traveling down Houston St and turning onto Elm St from their Elevated position standing atop the Zapurder Perch.  The Current Z Film is a Sham.

[Chris Davidson]

When you create speed and distance reductions, you have to adjust frame counts too:
One reason why the WC created different versions of CE884, with the same physical locations (z161/168 - z166/171) applied to different frame numbers.

The adjustments were not reflective of the limo traveling at those speeds (2.24/3.734) at zframes (z161/168 - z166/171), they are a reflection of the reduction in speed applied to the limo.

[Chris Davidson]

The diorama along with other supplied WC documents provides a distance to work with:

[Chris Davidson]

Remember, it's not how fast the limo was moving, it's what the limo's speed was reduced to in terms of frame count. Such as the following:
zframe 168-z171 was entered as a distance of .9ft traveled.
Extend that over 1 second of time:
18.3/3 = 6.1 x .9ft = 5.49ft traveled
30ft distance via the diorama / 5.49ft per sec = 5.464sec duration
5.464sec x 18.3frames per sec = 100 frames
while:
zframe161-166 was also entered as a distance of .9ft
Extended over 1 sec:
18.3/5 =3.66 .9ft = 3.294ft traveled
30ft distance via the diorama /3.294ft per sec = 9.107...sec
9.107..sec x 18.3 frames per sec = 166.66... frames