# TCDS TC 198: 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/d7/97/d7971b826038487dd77b9e3d29fec489162d2f76d26dcd26e346c32b11bac5e9
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/30963BEC7618A5228525670E00658679.0001
- Page: https://openairdocs.org/tcds/TC%20198

## Models (3)

As the data sheet lists them.

- Cyclone R
- Cyclone GR-1820F-65
- Cyclone GR-1820F-55

## What the data sheet says

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

```text
MODEIS: Wright Cyclone R and GR-1820F-55, -65
I.C. NUMBER: T.C. 198
Model - Cyclone  Tyre  - 9RA  R and GR-1820F-55  Direct drive or 16:11  Direct drive or 16:11  R and GR- 1820F-65
reduction gearing  reduction gearing
Rating (with low
impeller gear ratio)  7.14: 1
hr. xpm, in.Hg.. at:
760-2100-34.5-5800  810-2550-35-4-6000
730-2100-34-5-S.I.  810-2350-37-0-S.L.
Take-off (one minute).
875-2200-39.0  900-2350-40.0
Rating (with high
impeller gear ratio)  10:1
in.Hg.. at:
675-2100-33-5-15300  675-2100-33-5-15300
Iake-off (one minute),
640-2100-35.5
87
Fore and stroke, in.  6.125 × 6.875
Lisplacement, cu. in.  1823
Compression ratio  6.40:1
Weight (dry), 1bs.  1012 (direct). 1107 (geared)
Fropeller shaft,
40 (direct), 50 (geared)
Larcuretion  stromDerg NA-FIr carburetor wIEn
131 an eat do candle evane
Ignition, dual  Scintilla SP9L, SF9IN1, SP9IN2,
SF913, or SF914 magnetos
Certification basis  approved Type Certificate No. 198
Froduction basis  Production  Certificate No. 8
NOT and 200 degrees F.. respectively.  Maximum permissible cylinder head, barrel, and oil inlet temperatures, 500 degrees F.. 325 degrees F..
```

## 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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