Engines of this type powered the original series 90 Monocoupes designed by Don Luscombe and built by the Mono Aircraft Corp. Monocoupe 90s were manufactured from 1930-40 with various engines, but the Lambert engines were only used on the Monocoupe. When Monocoupe production ceased so did the Lambert engine.
| Engine Name | Lambert Model R-266 |
|---|---|
| Manufactured by | Lambert Aircraft |
| Manufactured | 03/09/1935 |
| Serial # | 3185 |
| Cylinder Configuration | Radial |
| Number of Cylinders | 5 |
| Horsepower | 90 |