TCDS TC 5E-7

MODEIS: Wright Military R-975 Series I.C. NUMBER: 5E-7 Model R-975-11, -28, -30 - 32 Tyre Rating: Maximum continuous, in. Hg-. at: Rated Fressure altitude (ft.) 420-2200-34.5-1400 450-2300-36-S.I. (ft.) sea level pressure (ft.) 420-2200-34-8-S.I. 450-2300-36-S.I. Take-off (5 minutes), 450-2250-36.5 450-2300-36. Fuel (minimum octane aviation gasoline) 91 Fore and stroke, in. Lisglacement, cu. in. Compression ratio 6.3:1 • Weight (dry), 1bs. 700 (Models - 710 C.G. location (dry) Forwara ol mountang face, in. 7.0 Belcw Fropeller shaft, in. 0.2 Fropeller shaft, SÃE NO. 30 Supercharger gear ratio 10.15:1 3.31:1 Carturetion Stromberg NA-RA or 3 Holley 700F (Models -11, - 28) :301 Holley 700F (Model Ignition, dual Scintilla VAG-9DFR or Scintilla SF-9RN magnetos SF-9RN magnetos Ignition timing, degrees PTC 2, 2, 3, 4 NOTES NOTE 1. Maximum permissible cylinder head, barrel, and oil inlet temperatures, 500 degrees F., 325 degrees F.. and 200 degrees F., respectively, except that cylinder head temperature of Model -32 is 450 degrees F. NOTE 2. The above engines differ as follows: Exhaust Manifold Propeller Mounting Moynting Centre!- Dimensions Miscellaneous R-975-11 Rear Two position or 9 Bolts on 23-3/8 carburetor air inlet faces downward and constant speed inch circle accessory pump drive on oil pump housing. R-975-28 Front Constant speed 9 Bolts on 24-inch Carburetor air inlet faces downward and circle accessory pump drive on oil pump housing. R-975-30 Front Constant speed 9 Bolts on 24-inch Carburetor mounted lower with forward circle facing air inlet with relocated throttle and mixture control arms. R-975-32 Front constant speed 9 Bolts on 24-inch Carburetor mounted lower with forward circle facing air inlet with relocated throttle and mixture control arms. Vacuum or hydraulic pump drives located on right side of accessory housing facing 45 degrees to rear. The R-975-11 engine is closely similar to civil model R-975E-3. The R-975-32 engine was manufactured by Continental Motors Corp. " in than nes plate tend concen the witing place by t lose to it to now in votes caged on " is no room available NOTE 4. The following accessory provisions are provided: Maximum Torque (in. 1bs.) Rotation* Speed Ratio* Continuous Static Propeller governor (Optional on -11) 1.118 50 400 (Standard on -28, -30, -32) vacuum or hydraulic pump (Models -28, -30 only) cc 1-0 60 0 (Model -32 only) 1,636 600 (Model -32 only) cc 1.159 50 1200 Fuel pump (Models -11, -28, -30 only) 1:159 25 0 (Model - 32 only) 250 Generator (Models - 11, -28, -30 only) 1.125 180 1000 (Model -32 only) cc 1.500 21.9 380 Starter cc 800 6000 * "C* = Clockwise viewing pad; "CC = Counter-clockwise; Speed = Times crankshaft speed.