Search found 1021 matches

by MSI
Sun Jul 05, 2020 1:29 pm
Forum: McHenry News!
Topic: Chappaquiddick, 51 years ago, 40 years since McHenry Reconstruction
Replies: 1
Views: 217

Re: Chappaquiddick, 51 years ago, 40 years since McHenry Reconstruction

Just saw a video posted to twitter on the same process we used In 1979-1980s for creating Computer animations. For the Chappaquiddick animation, we did not have Oxberry punched acetate cells for the pen plotter to draw on. After that project and in preparation for future projects we did get the cels...
by MSI
Fri Jul 03, 2020 2:56 pm
Forum: msmac3D Licensee Notes
Topic: Important NOTE on Tech Support and Consulting
Replies: 2
Views: 2271

Re: Important NOTE on Tech Support and Consulting

July 2020: another minor update to include some question on questions!
by MSI
Thu Jul 02, 2020 10:50 am
Forum: McHenry News!
Topic: HELP! If YOU or someone you know has been in a crash!
Replies: 4
Views: 1831

Re: HELP! If YOU or someone you know has been in a crash!

Jul2020: We moved our response to a question previously posted here to a separate topic in the forum CRASH & Damage/Momentum Analysis
We also added some introductory sentences.
by MSI
Thu Jul 02, 2020 10:43 am
Forum: General Reconstruction Analysis
Topic: PC-CRASH: How Many % May An Investigator Be Wrong with pc-crash?
Replies: 2
Views: 233

Re: PC-CRASH: How Many % May An Investigator Be Wrong with pc-crash?

July 2020: moved entire response from topic HELP! If YOU or someone you know has been in a crash! to this topic to reduce having to duplicate any refinement, etc also add some introductory sentences also above: This topic/response was prepared to assist anyone in event a police department or expert ...
by MSI
Tue Jun 30, 2020 3:39 pm
Forum: McHenry News!
Topic: Collision Reconstruction TV segments from TLC and local News programs
Replies: 0
Views: 13

Collision Reconstruction TV segments from TLC and local News programs

Recently heard that CDs from the 90s are starting to deteriorate so decided it is time to transfer VHS tapes to digital. Below are a few we came across: From late 1990's two projects for The Learning Channel (TLC) on which we performed 3D simulation reconstruction work and Casey Herbert of Flying Fo...
by MSI
Mon Jun 29, 2020 2:39 pm
Forum: McHenry News!
Topic: Chappaquiddick, 51 years ago, 40 years since McHenry Reconstruction
Replies: 1
Views: 217

Chappaquiddick, 51 years ago, 40 years since McHenry Reconstruction

On the NAPARS Facebook Page they had a post which began... July 18, 2020 is "This week's Historical Crash as it marks 51 years since Ted Kennedy escaped a sinking car, and Mary Jo Kopechne drowned in his upside-down Oldsmobile at Chappaquidick..." Which reminded me that we had prepared a crash recon...
by MSI
Wed Jun 24, 2020 9:37 pm
Forum: CRASH & Damage/Momentum Analysis
Topic: Does Momentum Analysis Requires COM Common Velocity?
Replies: 1
Views: 25

Re: Does Momentum Analysis Requires COM Common Velocity?

A response from poster: Q: I did calculate impact speeds using the Monte Carlo method and then simulated the collision with PC-Crash. The results of both were very well matched and the PC-Crash simulation results were very similar to the actual crash event, the post impact trajectories, travel, and ...
by MSI
Wed Jun 24, 2020 3:30 pm
Forum: CRASH & Damage/Momentum Analysis
Topic: Does Momentum Analysis Requires COM Common Velocity?
Replies: 1
Views: 25

Does Momentum Analysis Requires COM Common Velocity?

Q: I have an intersection collision, vehicle turning left struck by a through vehicle. The opposing expert claims that momentum cannot be used to calculate impact speeds . The claim is because the vehicles centers of mass (COM) did not reach a common velocity the collision does not meet the requirem...
by MSI
Tue Jun 23, 2020 3:21 pm
Forum: HVOSM & 3D Dynamics Simulation
Topic: What is the approx time/distance to make a lane change? Passing Manuever?
Replies: 2
Views: 4850

Re: What is the approx time/distance to make a lane change? Passing Manuever?

Update with a additional 'sight distance' references for passing maneuvers From 2018 Roadway Design Manual Passing Sight Distance Passing sight distance is applicable only in the design of two-lane roadways (including two-way frontage roads) and therefore is presented in Chapter 3, Section 4 under t...
by MSI
Tue Jun 23, 2020 9:55 am
Forum: Crash Reconstruction & Investigation News
Topic: HELP! If YOU or someone you know has been in an accident!
Replies: 2
Views: 5237

Re: HELP! If YOU or someone you know has been in an accident!

Trying to use the word CRASH instead of Accident, we renamed this topic a while back (2009?) so please see the new topic with additional information: