Freedom One, Inc. Download PDF Report
Freedom One, Inc. submitted a model Low Floor Mini Van, gasoline powered 4 seat/16-foot Chevy Venture converted mini van, for a 4 yr/100,000 mile STURAA test. The odometer reading at the time of delivery was 5,661.0 miles. Testing started on May 11, 1998, and was completed on August 14, 1998. The Check-In Section of the report provides a description of the bus and specifies its major components.
The primary part of the test program is the Structural Durability Test, which also provides the information for the Maintainability and Reliability results. The Structural Durability Test was started on June 15, 1998 and was completed on July 26, 1998.
The first segment of the Structural Durability Test was performed with the bus loaded to a GVW of 5,450 lb. The middle segment was performed at a SLW of 4,880 lb and the final segment was performed at a curb weight of 4,270 lb. Durability driving resulted in unscheduled maintenance that consisted of a variety of subsystem failures. These unscheduled maintenance breakdowns can be found in a complete and detailed listing of scheduled and unscheduled maintenance, which is provided in the Maintainability Section of this report.
Accessibility, in general, was adequate, components covered in Section 1.3 (Repair and/or Replacement of Selected Subsystems) along with all other components encountered during testing, were found to be readily accessible and no restrictions were noted.
The Reliability Section compiles failures that occurred during Structural Durability Testing. Breakdowns are classified according to subsystems. The data in this section is arranged so that those subsystems with more frequent problems are apparent. Failures are classified according to the severity as defined in Section 2. The test vehicle encountered no Class 1, 2, or 4 failures. The five Class 3 failures reported are available for review in Section 2.
A Double-Lane Change (obstacle avoidance) Test was safely performed in both right-hand and left-hand directions up to a maximum test speed of 45 mph. The performance of the bus is illustrated by a speed vs. time plot. Acceleration and Gradeability Test data are provided in Section 4, Performance. The average time to obtain 50 mph was 11.98 seconds.
The Shakedown Test produced a maximum final loaded deflection of 0.068 inches with a permanent set ranging between -0.003 to 0.001 inches under a distributed static load of 2,100 lb. The Distortion Test was completed with no water leakage observed throughout the test. All subsystems operated properly. The test bus was not equipped with any type of tow eyes or tow hooks; therefore, the Static Towing Test was not performed. The Dynamic Towing Test was performed by means of a front lift tow. Due to the lack of tow eyes or tow hooks, a Chevron wheel lock system was incorporated. No deformation or damage was noted, and no problems were encountered with the towing interface. A rear test was not performed as per manufacturers recommendations. The Jacking and Hoisting Tests were also performed without incident. The bus was found to be stable on the front jack stands only. The manufacturer does not recommend jacking on the rear axle, therefore rear jacking measurements are not available. The minimum jacking clearance observed with a tire deflated on the front was 4.70 inches.
A Fuel Economy Test was run on simulated central business district, arterial, and commuter courses. The results were 14.67 mpg, 16.07 mpg, and 36.84 mpg respectively; with an overall average of 18.26 mpg.
A series of Interior and Exterior Noise Tests was performed. This data is listed in Section 7.1 and 7.2 respectively.