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Os Max Fs A-72 Incl.Schalld

High-power four-stroke
engine suitable for all
types of flight models.
Uniform quality, high
power and reliability,
long life. Fitted with
easy to adjust
carburettor 40NA. The
innoative lubrication
system makes it
unnecesary to lay hoses
for the ventilation of
crankcase. For optimising
the noise level the
silencer provided has a
large volume and a
special design.

Availability: In Stock

£379.00

Available

Os Max Fs A-110 Inclschalld

Availability: In Stock

£319.00

Available

Os Max Re 49 Pi-Ii

Chamber volume 4.97 cm.
Air-cooled four-stroke
engine. Enhancement of
the engine Order No. 1801
with numerous
improvements:
- New carburettor with
mixing regulation and
air-inlet funnel
- Can also be operated
with synthetic oil as
compared to the previous
version
- Use of a normal glow
plug of the type "F"
- New, more effective
sound absorber
The engine OS MAX RE 49
PI-II is a rotary-piston
model engine developed
according to the
principle of Dr. Felix
Wankel. Instead of the
piston and cylinder of a
conventional engine the
rotary-piston engine has
a triple-arched rotor,
which runs in a casing of
the shape of a
double-arched trochoid on
a circular path, while
it itself rotates. This
planetary movement is
controlled by an
eccentric shaft, a
toothed crown and a fixed
pinion in the motor
casing; thereby the
suction and the
combustion chambers
expand and become small.
The sucked in mixture of
fuel/gas is thus
compressed and pushed in
the combustion chamber,
where it is ignited and
exerts a force on the
eccentric shaft while
expanding. Springy
sealing ledges at the
edges of the rotor
prevent the overflowing
of the gases from one
chamber to another. The
control of the inlet and
the outlet takes place
through slits, as in the
case of two-stroke piston
engine. The motor is
thermally non-critical
owing to a strong ribbing
of the trochoids on the
combustion side. The
characteristic property
of the rotary engine is
the almost complete
freedom from vibration,
which cannot be achieved
in piston engines of
comparable power. The
engine works according to
the four-stroke principle
and the sound can thus be
absorbed by using simple
means. The throttle
carburettor enables a
continous regulation of
the speed. The
accompanying mounting
ring permits a quick and
secure three-point fixing
of the engine at the head
frame of the
hull.

Availability: In Stock

£359.00

Available