# TCDS TC 5E-7: Wright Aeronautical Division Curtiss-Wright Corporation

- Type: Type certificate data sheet
- Status: Current
- Holder: Wright Aeronautical Division Curtiss-Wright Corporation
- Revision: 0
- Product: Engine
- Data sheet PDF: https://openairdocs.org/files/sha256/10/2d/102d9d992dda08c3e64814737f347f07529ea410593054577873fc4cf8eca233
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/FAB0DC87F4206DDB8525676A0054F4ED.0001
- Page: https://openairdocs.org/tcds/TC%205E-7

## Models (1)

As the data sheet lists them.

- Military R-975 Series

## What the data sheet says

This is OCR from the scanned FAA data sheet. OCR can misread letters and numbers.

```text
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.
```

## ADs

None name its models.

## STCs approved under this data sheet (1)

- [STC SE04651CH](https://openairdocs.org/stc/SE04651CH): To allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22. Swift Fuels LLC

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