1280 Field Parkway, Marietta, Georgia 30066 * (770)514-3288
INVESTIGATIVE REPORT
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ATS File No. B05507 Date 03 April, 2001
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Mr. Richard Aho
Mile Marker, Inc.
1450 S.W. 13th Court
Pompano Beach, Florida 33069

Re: Warn Winch Testing

Subject

Testing of the Warn XD9000i 4.6 hp winch under laboratory and field conditions

Background

Mr. Richard Aho of Mile Marker, Inc. (Mile Marker) contacted Applied Technical Services, Inc. (ATS) on 24 August 1999. Mr. Aho requested that ATS conduct testing of the production model XD9000i winch manufactured by Warn Industries, Inc. (Warn). Mr. Aho made arrangements to have a new XD9000i winch as well as several spare motors and steel wire ropes shipped from Warn resellers directly to ATS in October 2000. Mr. Aho shipped a Warn HS9500i winch to ATS as well so that limited testing could be performed on that winch as well.

Objective

Test the Warn XD9000i and determine its mechanical and electrical operating limits, also the unloaded stopping distance required by the XD9000i and HS9500i.

Conclusions

  • When pulling at or near its advertised rated capacity of 9000 lb., the Warn XD9000i winch’s wire ropes failed consistently.
  • The wire rope failures on the XD9000i winch occurred at loads ranging from 72% to 103% of its advertised capacity.
  • Based on standard industry calculation methods, the design breaking strength of the wire rope supplied with the Warn XD9000i winch was approximately 10% less than the winch’s advertised rated capacity.

ATS Lab Web Site

INVESTIGATIVE REPORT
<
>
ATS File No. B05507 Date 03 April, 2001
Page 1
of
23