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1 9 9 8 -2 0 0 3 Ford W indstar 1 9 9 8 2 0 0 3 Ford W indstar Rear Axle Beam C Corrosion Failure i F il W ebEx Presentation to Ford Safety Office PE1 0 -0 1 6 0 7 / 2 1 / 2 0 1 0 1 1998-2003 Ford Windstar Rear Axle B Beam Corrosion


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1 9 9 8 -2 0 0 3 Ford W indstar 1 9 9 8 2 0 0 3 Ford W indstar Rear Axle Beam C i F il Corrosion Failure

W ebEx Presentation to Ford Safety Office 0 7 / 2 1 / 2 0 1 0 PE1 0 -0 1 6

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1998-2003 Ford Windstar Rear Axle B C i F il Beam Corrosion Failure

Th t t hi l d b ti l h i f th The test vehicle was prepared by creating a release mechanism for the rear axle, installing two five-point harnesses, a V-Box III data collection system, and titanium outriggers. The front outrigger was set at 12 inches and the rear outrigger was set at 14 inches (puck clearance to ground). The test was conducted on the Vehicle Dynamics Area (VDA) at TRCPG by accelerating to 35 mph in a y ( ) y g p straight line and intercepting a 300-ft radius circle course, then releasing the rear axle “fork plate”

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releasing the rear axle fork plate .

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http://trcpg.com/facilitydynamics.asp Intended path on test track 3

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Removed axle to modify for testing 4

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VRTC fork plate Two of the dowel pins were drilled and fitted with spring-loaded plastic cotter pins plastic cotter pins 5

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Release mechanism and test setup as viewed from rear of vehicle 6

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VRTC rear axle release system – initial weld pattern 7

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VRTC rear axle release system – final weld pattern 8

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Windstar and chase vehicle Freestar prior to test 9

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Contour HD 1080P cameras 10

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play video Windstar_Rear_Axle_Test-2010-07-08-FINAL.wmv 11

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Actual Windstar path from V-Box GPS data plotted in Google Earth 12

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View from chase vehicle camera 13

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View from chase vehicle camera 14

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View from panning camera 15

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View from underneath camera 16

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Post-test view of left front 17

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Post-test view of left rear 18

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Post-test view of left-rear wheel well 19

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Post-test view of right rear 20

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Post-test view of right-rear wheel well 21

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Post-test view of right-rear wheel from rear of vehicle 22

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Post-test view of right-rear wheel from front 23

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Post-test view of right front 24

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Post-test view from below rear axle 25

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Post-test close-up view of right-side axle against floor pan 26

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VOQs on the 1998-2003 Ford Windstar R A l B C i F il Rear Axle Beam Corrosion Failures

473 VOQ l f il

  • 473 VOQs on rear axle failures
  • 6 alleged crashes
  • 2 alleged injuries
  • Numerous loss of control incidents
  • 1 rollover

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VOQ 10334753 28

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VOQ 10327329 29

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VOQ 10327329 30

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VOQ 10331092 31

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VOQ 10331092 32

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VOQ 10331092 33

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The incident was 23 days and 2,291 miles after . . . 34

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VOQ 10331092 35

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Crash site along service roadway near freeway ramp 36

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Post-crash view of left front 37

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Post-test view of left rear 38

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Post-crash view of left-rear wheel well 39

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Post-crash view of left-rear wheel well 40

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Post-crash view of right rear 41

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Post-crash view of right-rear wheel well 42

Laboratory and cell-phone videos of key turn speed

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Post-crash view of right front 43

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Post-crash view underneath vehicle 44

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Post-crash view underneath vehicle 45

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Post-crash view underneath vehicle showing axle fracture 46

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Crash site along service roadway near freeway ramp 47

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Crash site along service roadway near freeway ramp 48

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Crash site along service roadway near freeway ramp 49

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Crash site along service roadway near freeway ramp 50

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Crash site along service roadway near freeway ramp 51

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Post-crash view of right front 52

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Discussion

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For more information contact:

Daniel Pearse T t ti S f t E i Transportation Safety Engineer United States Department of Transportation National Highway Traffic Safety Administration Vehicle Research and Test Center Vehicle Research and Test Center Defects Analysis Group Post Office Box B37 10820 State Route 347 10820 State Route 347 East Liberty, OH 43319-0337 937-666-4511 x267 dan.pearse@dot.gov

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