- Holder
- Wright Aeronautical Division Curtiss-Wright Corporation
- Revision
- 0
- Status
- Current
- Product
- Engine
- Models
- 2
The release keeps the latest revision of each data sheet. Model names are as the data sheet lists them.
On this page
Models · 2
| Model | Also known as | Note |
|---|---|---|
| Cyclone GR-1820F-56 | ||
| Cyclone R-1820F-56 |
Airworthiness directives · 1
ADs whose products are models on this data sheet, matched by model and maker.
STCs approved under this data sheet · 1
What the data sheet saysOCR
This is OCR from the scanned FAA data sheet. OCR can misread letters and numbers.
MODELS: Wright Cyclone R-1820F-56 and GR-1820F-56
I.C. NUMBER: ATC 159
Model - Cyclone R-1820F-56 SR-1820F-56
Type - 9RA Direct drive 16:11 reduction gearing
Rating:
Maximum continuous,
hp, Ipm, in.Hg., at:
Rated pressure
altitude (ft.) 755-2100-34-0-11300 740-2100-34-0-11300
Sea level
pressure altitude 695-2100-34.0-S.L. 680-2100-34.0-S.I.
Take-off (one minute).
hp. rpm. in igo, S.1. 785-2200-37.5 770-2200-37-5
Fuel (minimum octane
aviation gasoline) 87
Fore and stroke, in. 6.125 × 6.875
Cisplacement, cu. in. 1823
Compression ratio 6.4:1
weight (dry), Its. 1000
Fropeller shaft,
SAE No. 40
Supercharging
(impeller gear ratio) 8.83:1
Carburetion Stromberg NA-F7F carburetor with
2-3/8 in. venturi, Holley C.G.
1375 C, E, F, H or Chandler-Evans
1375DA-1 carburetor
Ignition, dual Scintilla VAG-9DF, SF9L, SF9LN1,
SF9LN2, SF9L3 or SF9L4 magnetos
Certification basis Approved Type certificate No. 159
NOIE nd 200 degrees r., respectively. Maximum permissible cylinder head, barrel and oil inlet temperatures 500 degrees F., 325 degrees F..
NOTE 2. 32398 (tex model 2-1620-56) and 28243 (tox model c2-18201-56) eligiote for use ir. certificated arcraft. expired 7/25/41.