I - Model UPF-7 2 POLB, Approved June 5, 1937
(Same as Model YPF-7, ATC 586, except for engine installation).
Engine Continental W670K (See Item 325 for optional engines).
Fuel 65 min. octane aviation gasoline
Engine limits For all operations, 2175 rpm (225 hp)
Airspeed limits Level flight or climb 158 m.p.h. True Ind.
Glide or dive 214 m.p.h. True Ind.
Propeller limits Maximum permissible diameter 99 in. (May be increased to
102 in. with Item 313 installed).
C.G. range (-12.6) to (-4.0)
Maximum weight 2650 lbs.
No. seats 2 (1 (-4), pilot at (+38)) Eligible with a two-place front
seat if installed in accordance with Waco Dwg. Nos. 23702
to 23718, inclusive. (See NOTE 2).
Maximum baggage 25 lbs. (+69) (See NOTE 2 regarding 100 lbs. baggage
capacity).
Fuel capacity 50 gals. (2 tanks in center section at 25 gals.) (-13)
Oil capacity 4 gals. (-43)
Control surface
movements Aileron 23° up 13° down
Elevator 40° up 17° down
Rudder 30° right 30° left
Serial Nos. eligible 4659 and up
Required equipment Items 101, 103, 104, 105 and 106.
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