Thursday, April 15, 2010
GRUMMAN AMERICAN TR-2
|STANDARD DATA: Seats 2. Gross wt. 1,560. Empty wt. 1,039. Fuel capacity 24. Engine 108-hp Lycoming.
PERFORMANCE: Top mph 144. Cruise mph 133. Stall mph 60. Initial climb rate 660. Range 463. Ceiling 11,550. Takeoff distance (50') 1,590. Landing distance (50') 1,100.
Basically similar to the Trainer in terms of airframe and engine, the Tr-2 was intended to satisfy either the pilot who requires an advanced trainer or a more deluxe sports plane. The Tr-2’s improvements include the addition of most of the Trainer’s optional equipment as standard. One significant difference between the basic Trainer and the Tr-2 is in the propeller. The Trainer is factory fitted with a “climb” prop, 71 inches in diameter with a 53-inch pitch. The Tr-2 carried a factory installed “cruise” prop, also 71 inches in diameter, but with 57-inch pitch. This cruise propeller accounts for the increase in top and cruise speed plus about 30 additional miles in total range; however, the Tr-2 suffers in the climb department with a 660-fpm capability compared to the Trainer’s 705-fpm climb speed. Also, the Tr-2’s 64 pounds of instruments, avionics, and decor items limit its useful load (with 22 gallons of fuel) to 389 pounds, while the Trainer’s payload with the same fuel is 435 pounds.