GRAUPNER heim Bell 230 Instructions D'utilisation page 36

Introduction
The Model 230 is a 9-seater multi-purpose helicopter made by the Bell Helicopter TEXTRON
company, and was developed to be the successor to the renowned Type 222. Powered by two
Allison 250 C-30 G/2 turbines, each rated at 700 BHP take-off power, this helicopter can attain a
maximum service altitude of 4500 m at a maximum take-off weight of 3.8 tons, and is capable of
228 km/hr top cruise speed.
Our version is a semi-scale model drawn to a scale of 1:8.1 and can, like the full-size, be built in
either of two variants: with fixed skid landing gear or with a retractable tricycle undercarriage.
The seamless white pigmented GRP fuselage features machine-cut windows and other
openings and the front upper opening is large enough to accept the Uni-Expert mechanics or
Uni mechanics 2000 mechanical system completely assembled (including tuned pipe silencer);
the assembly is attached to the fuselage floor by means of four screws, and braced at the top at
two further attachment points. The standard tail rotor drive system is based on a 2 mm Ø piano
wire shaft, the tail rotor linkage consists of a cantilever CFRP pushrod.
The mechanically operated retractable undercarriage is available under Order No. 4459.4. A
standard (low-cost) servo is used to operate each undercarriage leg; a system which keeps set-
up and adjustment simple.
The top fuselage fairing, the fuselage tail cap and the main fuselage are all supplied as GRP
mouldings with a high-quality gloss white surface, and this means that you can obtain an
attractive finish just by painting on the contrast colours and applying the decal set.
The motor is started from above using the hexagon starter adaptor with freewheel, Order No.
1621. This requires the fitting of the hexagon starter cone, Order No. 4448.103, in the cooling
fan mounted on the motor.
Specification
Fuselage length (excl. rotor) approx. 1600 mm
Fuselage width (excl. rotor) approx.
Overall height approx.
Scale
All-up weight min. approx.
300 mm
440 mm
8,1:1
4900 g
2
Bell 230