# TCDS TC 149: 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/bc/6e/bc6ec5a062492bcc6825406ac22c438ce6cadf8098f2598d15ec9ff74263e216
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/8B71E7E3AF07105F8525670E00656AE4.0001
- Page: https://openairdocs.org/tcds/TC%20149

## Models (4)

As the data sheet lists them.

- Cyclone SR-1820-F-53
- Cyclone SGR-1820-F-53
- Cyclone SGR-1820-F-3B
- Cyclone SR-1820-F-3B

## What the data sheet says

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

```text
MODEIS: Wright Cyclone SR and SGR-1820F-3B, -53 and Military R-1820-75
I.C. NUMBER: T.C. 149
Models - Cyclone  SR-1820-F-53 and F-3B  SGR-1820-F-53 and F-3B
Type - 9RA  Direct  16:11 reduction gearing
Fating:
Maximum continuous,
hp, rEm, in. Hg., at:
Rated pressure
altitude (ft.)  745-2100-34-0-9600  730-2100-34-0-9600
Sea level fressure
685-2100-34-0-S.I.  670-2100-34.0-S.I.
Take-off (one minute)
hr. rpm, in.Hg.  785-2200-37.5  770-2200-37.5
Fuel (minimum octane
aviation gasoline - CFR
Motcr Method fuel)  87
Fore and stroke, in.  6.125 × 6.875
[isflacement, cu. in.  1823
compression ratio  6.4:1
height  (dry) .  Its.  1000  1095
Fropeller sahft,
SAE NO.  40  50
supercharging
(impeller gear ratio)  8.31:1
Carturetion  Stromkerg NA-F7C or NA-FTE with
2-1/4 200  venturi, NA-F7F with
2-3/8 in.  venturi,  or Holley C.G.
1375 C, E, F.  H or Chandler-Evans
1375DA-1 carburetor
Ignition, dual  Scintilla VAG-9DF,  SF9L, SE9LN1,
SF9IN2, SF913 or SF9L4 magnetos
NOTES  1.2,3  1. 2
Certification basis  Approved Type Certificate No. 149
Froduction basis  None.  engines under this type certificate and, therefore, each engine so produced is subject  The  manufacturer does not hold a production certificate for the production of
to a  detailed inspection for workmanship and conformity with the approved data ry a
Civil Aeronautics Administration Agent.  In addition, the engine must have a satis-
factory run-in including 5 hours at rated power and speed.  Upon satisfactory completion
of the  above, the agent will tag the engine with Tag Form ACA 186.
NOTE 1.  Maximum permissible cylinder head, barrel, and oil inlet temperatures, 500 degrees F., 325 degrees F..
and 200 degrees F.. respectively.
The approval of SR and SGR-1820F-3B engine models expired as of 7/25/41.  No engines modified to these
models from  the F-3 models after that date eligible for use in certificated aircraft.
Type Certificate No. 149.
```

## 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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