Specifications Overview:
The document provides specifications for Arneson Surface Drives, a product of Twin Disc Marine. It includes details on various models, horsepower acceptance, input shaft torque limits, nominal shaft size, unit weight, overall external length, thrust socket diameter, thrust socket flange diameter, turning angle, and propeller trim control.

Model Specifications:

• ASD08: Horsepower acceptance up to 990 for gasoline, 380 for diesel, and 10,000 for gas turbine. Torque limit is 1200 lb-ft with a nominal shaft size of 2.00 inches. Unit weight is 285 lbs, with an overall length of 42 inches.
• ASD10: Horsepower acceptance up to 1485 for gasoline and 565 for diesel. Torque limit is 2000 lb-ft with a nominal shaft size of 2.50 inches. Unit weight is 415 lbs, with an overall length of 53 inches.
• ASD11S: Diesel horsepower acceptance up to 850. Torque limit is 3200 lb-ft with a nominal shaft size of 2.875 inches. Unit weight is 515 lbs, with an overall length of 57 inches.
• ASD12: Diesel horsepower acceptance up to 1400. Torque limit is 4800 lb-ft with a nominal shaft size of 3.30 inches. Unit weight is 785 lbs, with an overall length of 63 inches.
• ASD14: Diesel horsepower acceptance up to 1800. Torque limit is 8000 lb-ft with a nominal shaft size of 3.50 inches. Unit weight is 1135 lbs, with an overall length of 71 inches.
• ASD15S: Diesel horsepower acceptance up to 2100. Torque limit is 11,500 lb-ft with a nominal shaft size of 4.50 inches. Unit weight is 1500 lbs, with an overall length of 78 inches.
• ASD15L: Diesel horsepower acceptance up to 2400. Torque limit is 13,500 lb-ft with a nominal shaft size of 4.50 inches. Unit weight is 1540 lbs, with an overall length of 78 inches.
• ASD16: Contact Twin Disc for specifications. Torque limit is 16,500 lb-ft with a nominal shaft size of 4.50 inches. Unit weight is 1985 lbs, with an overall length of 87 inches.
• ASD18S: Diesel horsepower acceptance up to 21,500. Torque limit is 21,500 lb-ft with a nominal shaft size of 5.51 inches. Unit weight is 3200 lbs, with an overall length of 104 inches.
• ASD18L: Diesel horsepower acceptance up to 30,000. Torque limit is 30,000 lb-ft with a nominal shaft size of 6.69 inches. Unit weight is 4880 lbs, with an overall length of 107 inches.

Materials and Additional Information:
Materials used include Almag 35/Aluminum alloy and Bronze for in-line or drop-center units. The document also notes that torque ratings are nominal and may vary due to vessel characteristics. Additional components included in unit weight are trim and steering cylinders, trim pump, reservoir, mounting hardware, and hoses. Metric conversion factors are provided for horsepower and kilowatts.