|Practical rpm||2 500 - 18 000|
|Recommended rpm||9 000 - 11 000|
|Prop size|| 11 x 7
11 x 8
12 x 7
12 x 8
|The YS45FS and FR are class 45 engines derived from our championship
winning 60F-series pattern engines.
These engines feature superior fuel delivery incorporating the YS pressurization system, butterfly type throttle and new carburetor design. The carburetor uses simplified construction that does not require adjustment other than the familiar needle valve.
Both versions of the engine are suitable for the novice as well expert R/C flyer.