A-A-52166B
TABLE III. Performance.
Load condition |
Terrain grade |
Minimum performance Requirements |
Speed (mph) |
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Sn I |
owmobile typ II III 20 20 45 30 70 50 NIA NIA 20 20 NIA NIA |
e IV |
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GVW and sled GVW only Operator only Operator only GVW and sled GVW and sled |
Level Level Level 25 percent (%) sidegrade Level 30% upgrade |
Speed, maintain for 60 minutes Cruising speed maintain for 60 minutes Speed, maximum, not less than Maintain grade without overturn or engine stoppage. 100 ft radius turn (maximum). Ascend continuous grade for 10 minutes without overheating. |
20 40 60 NIA 20 NIA |
25 30 40 NIA 20 NIA |
|
3.3.1 Brake performance. Brake performance shall be in accordance with SAE J44.
3.3.2 Cold starting performance. The vehicle shall be operated after 48-hour exposure to -40 °F
ambient temperature. Starting aids shall be allowed.
3.3.3 Noise performance. The sound pressure level shall not exceed 73 decibels on the "A"
scale (73 dB(A)) at 15.2 meters (50 ft) when traveling at 24 kilometers per hour (kmIh)
(15 milesIhour). The sound pressure level shall not exceed 78 dB(A) at 15.2 meters (50 ft) when accelerating at wide open throttle.
3.4 Safety. All rotating or reciprocating parts or other parts subject to high operational temperatures that are of such a nature or are so located as to be or become a hazard to the operating or maintenance personnel shall be substantially guarded or insulated to the extent necessary to eliminate the hazard. Exhaust discharges from the snowmobile shall be directed so that they do not endanger personnel or obstruct the view of the operator. Non-functional sharp edges, projecting points, and excessive length of fasteners shall not be incorporated. Footrests shall have a non-skid surface.
3.5 Human factors. The characteristics of the snowmobile shall provide for operation by arctic clothed persons in the size category from the fifth to the ninety-fifth percentile.
3.6 Special tools. All special tools that are required for disassembly and assembly of components for routine maintenance and repair shall be furnished with each vehicle.
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