Robbe 8571 HC3-SX

Robbe 8571 HC3-SX

The HC3-SX is the top model in the robbe series of HeliCommand Flybarless systems (Rigid) for controlling all current types of helicopter with flybarless rotor heads. The functions of the successful HC3 Xtreme have been expanded with the new patented horizontal stabilisation (self- levelling) system.

This safety function also provides a means of rapidly, deliberately and fully automatically bringing the model back to a level flight attitude from manoeuvres such as the tik-tok or piro-flip.
This makes it possible to learn the skills of 3D aerobatics, and to return to level flight quickly, safely and automatically if a critical situation should develop. Virtually a "real flying simulator", combined with a huge fun factor. It is possible to set the degree of stabilisation, and switch horizontal mode on and off, directly from the transmitter using an auxiliary channel.
This functionality is made possible by the latest generation of high-quality silicon MEMS gyro sensors. This provides the HC3-SX with full 3D capability. It also incorporates a very high-quality ultra-fast tail rotor gyro. No external gyro is required!
The system also includes symmetrical torque control. The further improvement in tail holding power is achieved by coupling the tail rotor gyro internally to the collective pitch data from the rotor head control system.
This system is naturally suited to scale flybarless helicopters (two-blade or multi-blade) or other flybarless helicopters such as trainers etc. The horizontal mode, which can be switched on at any time, makes the system an excellent choice for beginners.
The HC3-SX can be used in helicopters with electric and glow power as well as turbine-powered models (please observe the safety note in the instructions relating to turbines installed in scale fuselages.) The system supports all current analogue, digital and brushless servos, including narrow-pulse types (760 µs) for the tail rotor (e.g. robbe-Futaba S 9251 or BLS 251). The system supports all commonly used swashplate types, including four swashplate servos (H1, H3-90°, H3-120°, H3-140°, H4-90°, H4-90°+45°), as well as virtual swashplate rotation.
The system can operate as a pure tail rotor gyro without further accessories, e.g. if you wish to test-fly a new model with a flybar head, then plan to convert it to a rigid system subsequently. In this case you do not need to purchase a separate tail gyro; all you have to do is switch off the Rigid function. The swashplate mixing is carried out by the HC3-SX, i.e. only a simple transmitter is required.
With its CNC-machined aluminium case and elegant design the unit easily matches the current high standards of quality of the major helicopter manufacturers. The ultra-compact design and flexible installation provisions make the unit suitable for use in virtually any helicopter, from micro-choppers up to 3.5 m scale machines.

-Set-up work is reduced to a minimum, not least owing to the clear separation between the gain settings for the rotor head gyros and the tail gyro, using independent auxiliary channels.
-Can also be used as a pure tail rotor gyro without further accessories.
-Direct USB connection for fast programming; the convenient set-up software is included in the set.
-The leads between receiver and HC3-SX feature plug-in connectors at both ends.
-The system features a gold-plated circuit board and the latest generation of MEMS gyros acting on all three axes.
- Can be connected directly to the new receivers with single-lead socket:

- serial pulse output SP, such as robbe FASST R6007SP, R6107SP and R6108SP receivers, and Jeti,

- robbe/Futaba S-BUS

- Spektrum (DSM2 only, DSMX in preparation)

- JR satellites (in this case the primary receiver is not required)

- The throttle output and a second output (e.g. governor, retractable undercarriage,
lighting system, etc.) are then available directly on the HC3- Xtreme.

- Flexible installation options: horizontal and vertical, normal, inverted.

- The HC3-Xtreme features flash memory, and can,
as of firmware V113, be updated on-line to the latest software specification

-Existing HC3-SX gyros can be retro-fitted with horizontal stabilisation (self-levelling) via an upgrade. This requires the unit to be sent to the robbe Service centre.

Set contents:
- HC3-SX including fixings
- Cable loom to receiver (90 mm)
- USB stick containing PC software (Win98, ME, 2000, XP, Vista, 7) and operating instructions
- USB lead for direct connection to PC / notebook

Specification:
Weight ca.: 18
Long ca.: 36
High ca.: 14