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Fiala FM70 S1-FS 4-Stroke Engine (with electronic ignition)
Product Details
Description
Fiala FM 70
S1-4T 1 cilinder 70cc 4stroke engine with silencer
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.
With the FM
70 the designer Zdenek Vlach has produced a ground-breaking engine. The engine
is 1 kg lighter than other four-strokes in it`s class, because of only one
camshaft, nickel-silicon cylinder lining and a CNC milled crankcase. Anyway it
is a robust engine with M5 crankcase and cylinder base screws.
The
carburettor is placed behind the engine, resulting in an very narrow engine
which fits into nearly every cowling.
Being a
four stroke with a large capacity 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 Fiala FM-70
S1-4T is a four stroke OHV engine with two valves per cylinder, running on
petrol/oil mixture. Valves and their seats are manufactured by Honda,
ensuring a very high quality. The fully encapsulated valve train reduces sound
as well as ensuring the rocker arms are well lubricated.
The Fiala
propellers are very efficient, this being due to minimal blade thickness. They
sound especially good on four stroke engines. Ideal Fiala two blade propeller
sizes for the FM 70: 24x14", 26x10" and 26x12".
The fuel
consumption is approximately 50% compared to that of a two-stroke engine with
the same displacement. A 300cc fuel tank lasts for about 15-20 minutes of
flying time.
The FM
70S1-4T is also available with a starter. With the current version of the FM
70S1-4T the starter can be retrofitted anytime.
Features
- Only 2.5 mm higher than the VM-60
- Swings big propellers with high efficiency in an reasonable
RPM range
- Exceptionally pleasing sound caused by big Honda valves and
clever valve timing
- Spontaneous
throttle response and smooth mid-range transition
- Small frontal section with the valve train, carburetor and
exhaust behind the cylinder
- Nickel-Silicon
plated cylinder surfaces
- Completely
enclosed valve train
- Only one camshaft
- Three crank bearings
- Valach
microprocessor controlled ignition with auto advance and retard
- Ignition is designed for a 2s LiPo battery
- VM-Motors are designed using the latest tools and techniques
- Capacity: 70 cc
- Bore: 47 mm
- Stroke: 40 mm
- RPM range: 1000-6200 1/min
- Hight from crankshaft CL: 157.5 mm
- Length from engine mount to prop hub: 174 mm
- Engine weight including prop bolts and carb intake trumpet:
2300 g
- including
ignition: 2420 g
- Ignition
voltage range: 4.8 - 9 V
- Prop: Fiala Prop 2-blade: 24x14", 26x10", 26x12", Fiala Prop 3-blade: 22x12", 24x10"
Properties
Manufacturer | Fiala |
---|---|
Article reference | FM70S1FS |
Cylinder | 62-120cc |