Yamada YS .45FS - FR

YS .45FS - FR

Bore 21.8 mm
Stroke 20.0 mm
Displacement 7.47 ccm
Weight 400 grams
Muffler
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.