At Aerobertics we have been a direct Fiala / Valach dealer for years and we are in direct contact with the factory. We also use them in our demo models and as a result we have the necessary knowledge and experience about these engines so that we can offer you the best support.
The Fiala Motors FM 140B2-FS has the same well proven Nickel-Silicon plated cylinders and the cylinder heads as the FM 120B2-4T on a new CNC milled crankcase. The longer stroke of the crankshaft taken from the FM 170B2-4T increases the displacement to 140cc.
Due to being a four stroke, the low vibration is nothing but sensational, and torque is really high. The response to the throttle being opened is so smooth without the slightest attempt to surge, making the Fiala FM 140B2-FS absolutely ideal for your big aerobatic model.
Being a four stroke with a large capacity, it produces a very realistic full-size aircraft sound. With a relatively small silencer the sound level is very low, rather like a small saloon car. The silencers and headers for the FM 120B2-4T can also be used for the FM 140B2-FS.
The Fiala FM 140B2-FS is a four stroke OHV engine running on petrol/oil mixture. We have tried many oils and recommend Valvoline SynPower 2T oil. Our BEL-RAY H1R, although excellent for two strokes, is not ideal for four strokes, as it burns very well without deposit, therefore not much gets past the piston. With Valvoline Synpower 2T a lot more oil gets through to the crankcase. In Germany we recommend Aral Ultimate 102, as the smell is not so penetrating, it can be stored without deteriorating and it does not contain ethanol! If in your country petrol does not contain any ethanol, you can use any brand you like.
The fuel consumption is only approximately 50% compared to that of a two-stroke engine with the same displacement.
Valves and their seats are manufactured by Honda, ensuring a very high quality. The totally enclosed valve train reduces sound, as well as ensuring the rocker arms are well lubricated.
The processor controlled ignition allows easy starting and a exceptionally smooth running in all throttle settings.
The Fiala engines FM 140B2-FS looks just like an original aero engine, only smaller, it runs smoothly like an original aero engine and above all it sounds like an original aero engine. The legendary perfectionist Henry Royce of Rolls Royce always insisted that an engineering construction to be right must look right. I defy anyone to tell me the Fiala Twin does not look right.
The FM 140B2-FS is also available with a starter. With the current version of the FM 140B2-FS the starter can be retrofitted anytime.
FEATURES:
- Sensational smooth running and high torque
- Spontaneous throttle response and smooth mid-range transition
- Extremely low vibration throughout the RPM range because of the four stroke principle
- Nickel-Silicon plated cylinder surfaces
- Honda Valves
- Walbro Carburetor
- Valach microprocessor controlled ignition with auto advance and retard
- An ignition integrated voltage converter allows the use of two LiPo cells
- VM-Motors are designed using the latest tools and techniques
SPECIFICATIONS:
- Displacement: 140 cc
- Bore: 47 mm
- Stroke: 40 mm
- Width including valve covers: 320 mm
- Length from engine mount to prop hub: 186 mm
- Engine weight, including ignition: 4183 g
- Ignition voltage range: 4,8 - 9 V
- Propeller: Fiala Prop 2-blade: 32x12", 32x14", 34x12"
