- 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 |
|---|---|---|
| Whirlwind R-975C | ||
| Whirlwind GR-975C |
Airworthiness directives · 0
ADs whose products are models on this data sheet, matched by model and maker.
No ADs matched this data sheet’s models
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 Whirlwind R-975C, GR-975C
1.C. NOMBER: AIC 64
Model - Whirlwind R-975C GR-975C
Type - 9RA Direct drive 1.58:1 or 2:1 reduction gearing
Fating:
Maximum continuous,
bp. rim, at S.I.
Fressure altitude 400-2300-S.I.
Take-off (one minute),
hp. Ipm, at full
throttle 400-2300
Fuel (minimum octane
aviaticn gasoline) 73
Fore and stroke, in. 5.0 × 5.5
Lisplacement, cu. in. 972
Compression ratio 6:1
keight (dry), lts. 625
Supercharging
(imfeller gear ratio) 10.15:1
Carturetion Stromberg NA-R9 carburetor
Ignition. dual Scintilla VAG-9C magnetos
Certification rasis Approved Type Certificate No. 6ª
NOTE 1. Approval expired 3/26/34. No engines of these models manufactured after this date or with serial numbers
above 13434 eligible for use in certificated aircraft,