Search found 1303 matches

by MSI
Mon Jul 26, 2021 9:07 pm
Forum: Vehicle Safety
Topic: Child Safety Seats from back in the day
Replies: 0
Views: 16

Child Safety Seats from back in the day

See these old ads posted up on forums etc and just have to share I see these and share with my brother Stan McHenry (* see below) who's currently teaching the National CPS Certification Training Course about modern day child safety seats! We've come a long way babies! Early Baby Car seats.jpg safe b...
by MSI
Sat Jul 24, 2021 10:39 am
Forum: msmac3D Licensee Notes
Topic: HOWTO Calculate CRASH3 A & B Coefficients, AKV (for SMAC)
Replies: 0
Views: 18

HOWTO Calculate CRASH3 A & B Coefficients, AKV (for SMAC)

This is a very preliminary writeup In the tools menu of msmac3D we have the Lsqfit - A&B Coefficient Calculator (same program as discussed below) and we have now added a link to it to the Ver 3.3 3DGraphics HELP Button with a direct link to the NHTSA CASH Test database lsqfit and crash test dat...
by MSI
Wed Jul 14, 2021 2:28 pm
Forum: General Reconstruction Analysis
Topic: What is the preferred Pole/Tree Collision analysis method?
Replies: 5
Views: 7571

Re: What is the preferred Pole/Tree Collision analysis method?

Transferring some older VHS tapes to digital so note some parts are not clear Uploaded a collection of 7 full scale side impact tests https://youtu.be/cFsvnHyFIC8 summarized by chart below: Summary of 7 NHTSA test.png You can access the test data at the NHTSA Crash test database, here's a link to AL...
by MSI
Mon Jul 12, 2021 10:32 pm
Forum: General Reconstruction Analysis
Topic: Princess Diana Crash Reconstruction
Replies: 8
Views: 7395

Re: Princess Diana Crash Reconstruction

Added to initial thread some subject specific links to the 48 Hours video For task specific portions of the video see the following links: | Time on Video | Link to place in Video on Topic | | :---------------: | :---------------- | | @0:30 | Dan Rather Introduction | | @0:76 | Start of Brian McHenr...
by MSI
Mon Jul 12, 2021 8:37 pm
Forum: General Reconstruction Analysis
Topic: Recommendations for software and hardware for crash reconstruction
Replies: 0
Views: 8

Recommendations for software and hardware for crash reconstruction

Q: On a Facebook forum someone posted that their department is currently creating an crash investigation/ recon unit and they were asked to get a list of equipment needs/ necessity's together. Wondered what devices are out there that are being used for surveying etc? Also what programs are used to ...
by MSI
Mon Jul 12, 2021 3:58 pm
Forum: General Reconstruction Analysis
Topic: End-Over-End Rollover Analytical Relationships
Replies: 0
Views: 10

End-Over-End Rollover Analytical Relationships

We've made a copy of this topic from the topic Rollover Analysis: minimum speeds and roll velocity approximation The following is a page out of our book McHenry Crash Reconstruction 2008 which includes some equations to consider in calculating a minimum speed to produce an end-over-end vault. We wil...
by MSI
Mon Jul 12, 2021 2:24 pm
Forum: msmac3D/3D Vehicle Simulation
Topic: Rollover Analysis: minimum speeds and roll velocity approximation
Replies: 4
Views: 528

Re: Rollover Analysis: minimum speeds and roll velocity approximation

Question on another forum about full scale tests for end-over-end rollovers Can't recall any specific crash test which included an end-over-end vault but recall have seen some (might come to me later) In the meantime the following is a page out of our book McHenry Crash Reconstruction 2008 which inc...
by MSI
Thu Jul 01, 2021 2:21 pm
Forum: Specs/Acceleration/Braking
Topic: What are typical values for Free Rolling Drag coefficient?
Replies: 4
Views: 4227

Re: What are typical values for Free Rolling Drag coefficient?

Saw another article referenced on the INCR news forum . Join NAPARS and have access to all the ARJ issues. July/Aug 2016 ARJ page 31, PASSENGER CAR COASTDOWN RATES , By Wade Bartlett, Bill Wright, and Andy Rich Has some full scale tests, presentations of other test data and the following abstract &a...
by MSI
Thu Jun 24, 2021 12:00 pm
Forum: msmac3D Licensee Notes
Topic: Is there a Crush BEV/Crash3 calc option in msmac3D?
Replies: 0
Views: 37

Is there a Crush BEV/Crash3 calc option in msmac3D?

Q: Is there a Crush BEV/Crash3 option in the software? A: Yes. In the update Preliminary v3.3 uploaded for licensees only so use your login/password, which includes updates to the crash test database, how to videos, etc Also be sure to see the recent topic: HOWTO Calculate CRASH3 A & B Coefficie...
by MSI
Mon Jun 21, 2021 11:02 am
Forum: Specs/Acceleration/Braking
Topic: Golf Cart Braking and Handling Tests
Replies: 1
Views: 32

Re: Golf Cart Braking and Handling Tests

great followup on Facebook NAPARS page on golf carts: See NAPARS page Working with cars and trucks, many of us forget how small a golfcart is. It seems almost as large as a small car, but it's mostly air and happy thoughts, instead of engine blocks and steel drivelines. The article Inspection and Te...