This standard specifies the test conditions and test methods for the minimum stable speed test of motorcycles and mopeds. This standard applies to the test of the minimum stable speed of motorcycles and mopeds (except racing cars and vehicles with automatic clutches). GB/T 5383-1994 Test method for the minimum stable speed of motorcycles and mopeds GB/T5383-1994 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
Method of minimum steady speed test for motorcycles and mopeds
1 Subject and scope of application
GB/T 5383—94
Generation CB158-1
This standard specifies the test conditions and test methods for the minimum steady speed test for motorcycles and mopeds. This standard applies to the test of the minimum steady speed of motorcycles and mopeds (except racing cars and vehicles with automatic clutches). 2 Reference standards
GB/T5378 General principles for road tests for motorcycles and mopeds 3 Test conditions
3.1 It shall comply with the provisions of GB/T5378.
3.2 A test section of 50 m in length shall be set up, and there shall be sufficiently long auxiliary driving areas at the front and rear ends. 4 Test method
4.1 In the auxiliary driving area, put the transmission of the test vehicle in the gear position specified for the test, and control the throttle to reach the minimum speed for stable driving. Pass the test section in a straight line at this speed and measure the time to pass the test section. 4.2 After the test vehicle leaves the test area, immediately open the throttle fully, and its engine should not stall and the transmission system should not vibrate. Then measure the time t2 to pass the test section in the reverse direction according to the provisions of Article 4.1. 4.3 During the test, the clutch of the test vehicle should be in a fully engaged state, and the brake is not allowed to be used to slow down the test vehicle. 4.4 If the engine of the test vehicle stalls or the transmission system vibrates during the test, it is allowed to adjust the speed and re-test. 4.5 Calculate the minimum stable vehicle speed according to the following formula:
Where: min — minimum stable vehicle speed, km/h; t
-time to pass the test section on the way forward, s3
-time to pass the test section on the way back, s. ta
4.6 One round trip is one test, and the test is carried out twice. The smaller value is taken as the minimum stable vehicle speed. The test data and results are recorded in the table of Appendix A (Supplement).
Approved by the State Bureau of Technical Supervision on December 27, 1994 146
Implementation on July 1, 1995
Vehicle model
Engine number
Driver quality
Atmospheric pressure
Tire pressure: front wheel
Test sequence Driving direction
Minimum stable vehicle speed
Additional instructions:
Transmission gear
GB/T5383-94
Appendix A
Minimum stable vehicle speed test record form
(supplement)
Test date
Test locationWww.bzxZ.net
Frame number
Vehicle curb mass
Relative air humidity
Test interval distance
This standard is proposed by China Aviation Industry Corporation. Driving
Time to pass the test section
Minimum stable speed
One-way time
Total time for round trip
This standard is under the jurisdiction of the National Automobile Standardization Technical Committee. This standard was drafted by Nanchang Aircraft Manufacturing Company. The main drafters of this standard are Zhang Yiming, Rao Zhibiao, and Ye Yigeng. km/h
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