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Foreword
The MICRO STAR 400 v2 is a miniature electric-powered helicopter which boasts all the per-
formance and flight handling characteristics of much larger models. It is controlled using collec-
tive pitch and a Bell / Hiller main rotor mixer linkage, i.e. we have not adopted any compromises
which would have an adverse effect on flight control. The result is that the MICRO STAR 400 v2
can be flown without problem even in quite strong winds, in spite of its diminutive size.
The potential flight time per battery charge naturally varies according to the model's set-up and
the pilot's flying style; our experience shows that around 15 minutes duration is possible under
normal conditions if the recommended LiPo battery is used.
The control functions roll, pitch-axis and collective pitch are mixed mechanically, which means
that the model can be flown using a simple four-function radio control system; motor speed con-
trol and collective pitch are coupled together using a Y-lead. Nevertheless, a transmitter with
special helicopter options (mc-12 ... mc-24) obviously offers certain advantages.
The model's strong, lightweight chassis consists of nylon components, while the tail boom and
skids are made of eloxided aluminium; the boom braces are of carbon fibre.
The motor drives the main rotor by means of a single-stage gearbox with an integral auto-rota-
tion freewheel - by no means a standard feature in a model of this size.
The model is available in two versions which differ only in the tail rotor drive system: the tail
rotor is either driven directly by the motor via a ballraced carbon fibre shaft, or by a toothed belt.
Note: the version with belt-driven tail rotor is not suitable for installation in enclosed fuselages
such as the "A119 KOALA", Order No. 4461.
The MICRO STAR 400 v2 is supplied in a carry-case with handle; the case can be used subse-
quently to store and transport the model in ready-to-fly form (with the main rotor blades re-
moved).
Specification
Length excl. rotor approx.
Height approx.
Width excl. rotor approx.
Main rotor Ø
Tail rotor Ø
All-up weight min. approx.
Main rotor reduction ratio
Tail rotor reduction ratio
580 mm
205 mm
90 mm
630 mm
140 mm
520 g
13.2:1
4:1
2
Micro Star 400 v2
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