Note:
This SK720 package is suitable for small electric helis. It does not include the power bus, steel mounting plate, or any jumper cables which you would use to connect the unit to the power bus or a stand alone receiver. This package is designed for small helicopter use, where you will be using one or two satelites (which you supply). all that is included is the SK-720, foam pads, and a USB cable for programming.

This SK720 package does not include the optional power bus. For helicopters larger than '500' size, the power bus is recommended as is allows the SK720 to be connected with fewer cables leading to more accurate control. The power bus also removes the current load from the SK720, allowing the use of almost any combination of power hungry servos. Neither of these considerations are factors in smaller helicopters, so the power bus is not necessary.

Overview (with Rev 3.03 upgrade)

The SK-720 can greatly simplify your helis setup, by eliminating the flybar mechanics, tail gyro, and with the use of satellite receivers (not included), the receiver core and associated wiring as well.

But more than just a flybarless system, the SK-720 is a complete 6-degree of freedom inertial flight control system. So what does that mean for you?

Fast Performance

For 3D pilots, the SK-720 integrates the yaw and cyclic gyros, giving rock-solid piro maneuvers and tail control that benefit from knowing what the collective stick isdoing. Flybarless flight gives you more power with less bogging, and a locked-in control feel that is far superior to traditional flybar flight.

Improved Stability

For beginners or those learning 3D, the SK-720s built-in 3-axis accelerometer means you can set it to self-level, like a coaxial heli. This feature can be turned on full time, dialed down as your skills improve, or set to bail you out at the flick of a switch. Plus, a flybarless heli has greater stability than a heli with a flybar, and with fewer parts, is easier to repair. Small 450 size helis become as stable as 90-size helis. The SK-720 will allow every new pilot's first R/C helicopter to be flybarless.

Flight Logging

For all pilots, the SK720s built-in flight logging and data-plotting tools let you record and play back your flights in a simulator-like display on your PC (like a black-box recorder). Both the helis motion and the stick positions are displayed, letting you learn exactly where you can improve your skills or why you crashed. The playback software can also be used as a diagnostic tool, warning you of voltage dropouts and high vibration, while marking where in the flight they occurred. The data plotting software's free version lets you analyze your heli's vibration spectrum to find the source of mechanical issues, and with a low-cost upgrade, you can also plot and print reports for all the critical health log data for your heli and its radio system.

Helis Big & Small

For pilots flying micro-helis, the SK-720 will greatly simplify and lighten your machine. It also has a special small-heli tail gyro mode to give good holding power even on 250-size helis.

If you fly larger helis, the SK-720 includes a heavy-duty external power bus thats good for 25 continuous amps, and helps to isolate vibration from the gyro itself. The bus allows for high voltage servos, low voltage servos, or a combination of both, and includes 16 gauge cabling to connect directly to a 2-cell lipo battery.

Easy Setup

The PC setup software has wizards to guide you through setting up your first flybarless heli in just minutes making it easier to set up an SK-720 machine than a heli with a traditional flybar!

The setup software or optional SK-LCD terminal lets more advanced users fully tune their heli for max performance. And it's easy to upgrade the firmware at home so you'll benefit from any future product improvements with just a click of your mouse.

Future upgrades will include a GPS accessory for more precise xyz positions in the flight logs, as well as abilities entirely new to the hobby.

Features

• Easy set up for first-time users
• Flybarless stabilization with piro-compensation
• Built-in tail gyro, supporting most all tail servos by name in the setup software
• Supports many input options: Spektrum/JR Satellites (DSM2 and DSMx), Futaba S-Bus, Futaba PPM, Jeti PPM, Graupner JR, and your old traditional receiver.
• Supports use as a 9-channel receiver core when used with Spektrum Satellites, Futaba S-Bus, or PPM receivers
• Free vibration-analysis software lets you find mechanical problems with your heli.
• Low-cost Data Plotter software upgrade lets you plot and print reports for all the critical health log data for your heli and its radio system.
• Works with Digital or Analog swash servos
• Suitable for 120, 135/140, and 90 degree eCCPM, as well as mCCPM swashplates
• Works with 2,3,4, or 5 blades, with phase trim adjustable to +-90
• Swash Ring anti-binding algorithm
• Internal swash mixing, for accurate control
• Supports spektrum radios with either 1024 or 2048 servo steps, and 22ms or 11ms frame rates, DSM2 or DSMX
• Expansion port for future accessories such as GPS
• 38 x 30 x 14 mm, 17 grams
• 8.5 volt capable
• Optional 20 amp external power bus (included) for larger than 50-size and nitro helis (15 grams). Make brownouts a thing of the past!
• 3-axis accelerometer + 3 gyros, allowing self-leveling
• High-power 32 bit processor (for future upgradeability)
• Expansion port for GPS or a third sat-receiver
• Up to 10 servos (one tail servo, 4 digital swash servos, Throttle, and 4 Aux channels)
• Port for a remote indicator LED , which you can mount outside of the canopy
• Data logging of vibration level, RPM, servo bus voltage, control positions, and error states
• Built in micro-SD card (2 GB flight-data logging)
• Built in USB mass storage device - Connect the unit to your computer without having to install drivers
• Flight data logs can be played back on your PC with analysis of tuning and heli health
• Compatible with the Skookum SK-LCD terminal
• Existing SK360 setup files can be easily up-converted for the new unit