Each rail shall have a section modulus of 16.00 cubic inches, yield strength of 120,000 psi, and a resisting bending moment (rbm) of 1,921,069 inch-pounds. FRAME REINFORCEMENT A full-length mainframe "C" liner shall be provided. The liner shall be an internal "C" design, heat-treated steel measuring 9.38" x 3.13" x 0.25". Each reinforcement member shall have a section modulus of 3.90 cubic inches, yield strength of 120,000 psi and resisting bending moment (rbm) of 938,762 in-lb. FRONT AXLE The front axle shall be a reverse "I" beam type with inclined king pins. It shall be a Dana axle, Model D-2000F, with a rated capacity of 20,000 lb. FRONT SUSPENSION The front springs shall be a Standens, three (3)-leaf, taper leaf design, 54.00" long x 4.00" wide, with a ground rating of 20,000 lb. The two (2) top leaves shall wrap the forward spring hanger pin. The top leaf shall also wrap the rear spring hanger pin. Both the front and rear eyes shall be Berlin style wraps that shall place the eyes in the horizontal plane within the main leaf. This shall reduce bending stress from acceleration and braking. A steel encased rubber bushing shall be used in the spring eye. The steel encased rubber bushing shall be maintenance free and require no lubrication. SHOCK ABSORBERS Heavy-duty telescoping shock absorbers shall be provided on the front axle. OIL SEALS Oil seals with viewing window shall be provided on the front axle. FRONT TIRES Front tires shall be 20 ply, rated for 20,400 lb maximum axle load and 68 mph maximum speed. The tires shall be mounted on Alcoa or equivalent polished aluminum disc wheels with a ten (10) stud, 11.25" bolt circle. REAR AXLE The rear axle be a with a capacity of 27,000 lb. TOP SPEED OF VEHICLE A rear axle ratio shall be furnished to allow the vehicle to reach a top speed of 68 mph.
Each rail shall have a section modulus of 16.00 cubic inches, yield strength of 120,000 psi, and a resisting bending moment (rbm) of 1,921,069 inch-pounds. FRAME REINFORCEMENT A full-length mainframe "C" liner shall be provided. The liner shall be an internal "C" design, heat-treated steel measuring 9.38" x 3.13" x 0.25". Each reinforcement member shall have a section modulus of 3.90 cubic inches, yield strength of 120,000 psi and resisting bending moment (rbm) of 938,762 in-lb. FRONT AXLE The front axle shall be a reverse "I" beam type with inclined king pins. It shall be a Dana axle, Model D-2000F, with a rated capacity of 20,000 lb. FRONT SUSPENSION The front springs shall be a Standens, three (3)-leaf, taper leaf design, 54.00" long x 4.00" wide, with a ground rating of 20,000 lb. The two (2) top leaves shall wrap the forward spring hanger pin. The top leaf shall also wrap the rear spring hanger pin. Both the front and rear eyes shall be Berlin style wraps that shall place the eyes in the horizontal plane within the main leaf. This shall reduce bending stress from acceleration and braking. A steel encased rubber bushing shall be used in the spring eye. The steel encased rubber bushing shall be maintenance free and require no lubrication. SHOCK ABSORBERS Heavy-duty telescoping shock absorbers shall be provided on the front axle. OIL SEALS Oil seals with viewing window shall be provided on the front axle. FRONT TIRES Front tires shall be 20 ply, rated for 20,400 lb maximum axle load and 68 mph maximum speed. The tires shall be mounted on Alcoa or equivalent polished aluminum disc wheels with a ten (10) stud, 11.25" bolt circle. REAR AXLE The rear axle be a with a capacity of 27,000 lb. TOP SPEED OF VEHICLE A rear axle ratio shall be furnished to allow the vehicle to reach a top speed of 68 mph.