Best RC

FS 72-A 4-Stroke

This light and compact airplane engine features the same mounting bolt pattern as the FL-70 and FS-70U for easy replacement. The exhaust outlet direction and distance between the exhaust port and the silencer is adjustable. As with other FS-A engines, the internal oil system eliminates the need for a crankcase breather nipple. Featuring a broad power band suitable for scale as well as sport modelers, the FS72-A boasts a new 61N carburetor can be rotated 180° with extended intake venture to improve fuel flow and prevent messy fuel leakage from the carb.

SPECIFICATIONS
Displacement: 11.79cc
Bore: 27.0mm
Stroke: 20.6mm
Practical RPM: 2.400 – 12.500
Power Output: 1.2 hp/11.000 rpm
Weight: Engine 476g
Silencer & Manifold 54g

                              Retail
OSMG0877  FS72-A 4-Stroke      TBD

FS110-A 4-Stroke w/5040Offering more power for .91-size 4-stroke models, the FS110-A 4-Stroke with 5040 boasts a newly designed silencer with the external outlet direction and distance between exhaust port and silence adjustable. This engine features the same mounting bolt pattern as the FS-91SII for easy replacement and a new “blow-by” internal oil system eliminates the need for a crankcase breather nipple. The FS110-A gives modelers a broad power band making it suitable for scale as well as sport models. The new 60Y carburetor with extended intake venture to improve fuel flow and prevent messy fuel leakage from the carb.

SPECIFICATIONS
Displacement: 18.0cc
Bore: 30.4 mm
Stroke: 24.8 mm
Practical RPM: 2,000~11,000
Power Output: 1.8 hp/10,000 rpm
Weight Engine: 600g
Weight Silencer & Manifold: 72g

                                                  Retail
OSMG0990 FS110 Alpha 4-Stroke w/F-5040 Muffler   $649.99

21VZ-B V-Spec II

The engine that Atsushi Hara clinched the 1/8 Scale Buggy World Championships with! Now the .21 VZ-B V-Spec II features a V-shaped machined head for a lighter-in-weight and cooler run. Better fuel mileage is now standard due to the new carb insert. Racers will continue to appreciate the hardened, chrome plated, 4-port cylinder and liner for high durability and long life. The slide valve carburetor allows tuning to specific track conditions while the low-end needle adjusts from side to side for maximum adjustment ease.

                              Retail
OSMG2070 21 VZ-B V-Spec II   $849.99

Visit the O.S. Engines website at www.osengines.com