- Holder
- Wright Aeronautical Division Curtiss-Wright Corporation
- Revision
- 0
- Status
- Current
- Product
- Engine
- Models
- 1
The release keeps the latest revision of each data sheet. Model names are as the data sheet lists them.
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Models · 1
| Model | Also known as | Note |
|---|---|---|
| Cyclone GR-1820G-102 Series |
Airworthiness directives · 0
ADs whose products are models on this data sheet, matched by model and maker.
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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.
MORELS: Wright Cyclone GR-18206-102 series and Military R-1820-57, -79, -81, -83, -85, -89
IS. NUMBER: T.C. 169
Model - cyclone GR-18206 - 102 • 10 2A - 102B
Type - 16:11 and 3:2
reduction gears
Rating:
Maximum continuous,
spa. in.Hg.. at:
tated pressure
altitude (ft.) 900-2200-35-6000 900-2300-35.4-6700 850-2300-34.5-7500
pressure altitude 900-2200-36.7-S.L. 900-2300-37.5-S.L. 850-2300-38 1/2 -S.L.
(one minute),
Fuel hp. (minimum octane in. Hg. 1100-2350-43 6 1100-2200-43 1100-2350-43-5 1100-2350-43
aviation gasoline)
Pore and stroke, in. (CFR Motor Method fuel) 90 6-112 × 6-718 87
risflacement, cu. in. 1823
compression ratio 6.7:1 6.0:1
height (dry), Ibs. 1275
Fropeller shaft, SAE NO. 50
Supercharging
(infeller gear ratio) 7:1
Carburetion Holley C.G. 1375 C, E
HA OI stromberg
Chandler-Evans 1375 DA-1, or
PD-12H2 or 3 carburetor with .. Strombexg PD-12B5 or 7 ox 3-1/4 in. venturi
Ignition, dual Scintilla SF9L1, SF9L2,
SF9IN, SF9LN1, SF9L3, SF9L4
or Bosch SF9LU3 magnetos
Ignition timing,
NOTES Certification basis degrees BIC Right 20; left 15 Type Certificate No. 169 Type 1,2,3 1. 2
Froduction casis None. The manufacturer does not hold a production certificate for the production of
engines under this type certificate, and therefore, each engine so produced is subject
to a Jetailed inspection for workmanshif and conformity with the approved data ky a
Civil Aeronautics Administration Agent. In addition, the engine must have a satisfactory
run-in including 5 hours at rated power and speed. Ufon satisfactory completion of
the above, the agent will tag the engine with Iag Form ACA 186.
Maximum permissible cylinder head, barrel, and oil inlet temperatures 500 degrees F.. 325 degrees I..
and 222 degrees F., respectively.
NOIE 2. Eligitle with torquemeter No. 413516 at weight increase of 12 lbs.
NOTE 3. Military models R-1820-79, -81, -83, -85 and -89, identical to model GR-18206-102A, are eligikle for
use in certificated aircraft; however, the engine nameplate should be revised to include the correspondirg
ivil model designation and Type Certificate number.
NOTE 4. Military model R-1820-57 may be corverted to the Cyclone GR-18200-102 Ly substituting supercharger
impeller P/N 27145 and using either the 1375 DA-1 carburetor, setting number 69445N1, 2 or 4 as applicable
or substituting the Holley 1375 F carturetor with setting number 6927N29B.