Express delivery
Large selection of carriers
Satisfaction guarantee
The popular OMP HOBBY M1 and M2 mini-helicopters now get a bigger brother - the "380" M4 class 3D helicopter. The "eM-four" has a CCPM 120° cyclic plate with a flybarless "paddleless" rotor head. The powerful AC motor directly drives the 875 mm diameter carrier rotor ; the balance rotor is driven via a toothed belt. You can install your favorite flybarless control unit and servos, at least a 60A speed controller, ideally with a governor function, a 6S LiPo battery 2200 mAh and of course a reliable RC kit.
Let's take a closer look at this newest addition to the OMP Hobby hangar. The basis of the hull construction is a pair of carbon sidewalls connected by duralumin and plastic partitions. The "heart" is a duralumin structure carrying a SUNNYSKY R80-5 AC motor with an attached main shaft housing with bearings and circulator plate servo holders. The bearing rotor has a direct drive, the balancing rotor is driven by a toothed belt. The cycler plate and rotor head with blade carriers are all metal from precision CNC machined parts. All control rods are equipped with bolts allowing the length of the rods to be fine-tuned without the need to remove the ball studs. The tail beam is made of a profiled duralumin tube, the vertical stabilizer and the sides of the balancer rotor drive housing are carbon. The head and vanes of the leveling rotor are also all metal; yawing is controlled by a servo located in the lower part of the fuselage with a carbon rod. The chassis is made of tough plastic reinforced with glass fibers.
The model comes with a basic set of carrier and balance rotor blades; for the carrier rotor 385mm blades and 71mm blades for the balancing rotor.
You will need at least a six-channel RC set to control the helicopter; for full-fledged classic and 3D flying, you need a computer transmitter with adjustable 2-3 flight modes with at least five-point collective curves for hovering and acrobatics and another mode for autorotation.
The helicopter is ready to install a flybarless control unit - you can easily use most control units suitable for helicopters of this size, such as Bavarian Demon 3X or AXON, Futaba CGY760R or CGY755 and many others.
The use of high quality fast and strong digital micro servos with metal gears is a must; the KAVAN GO-1020MG servos proved to be excellent on the M4 prototype for the cycle board, and the upcoming super fast KAVAN GO-1021MG AC servo for turning.
The electronic speed controller should have a load capacity of at least 60A and a governor function. E.g. the OMP HOBBY 65A controller designed specifically for the M4 helicopter or the Hobbywing Platinum PRO 60A V4 etc. is suitable.
For power, you will need a six-cell 22.2V 2000-2200mAh LiPo battery with a 60C load rating necessary to fully utilize the engine's power and the helicopter's capabilities.
The easy-to-remove sports cabin is made of a very light molding made of durable plastic - you can choose from three color schemes guaranteeing good visibility and "readability" of the helicopter's position in the air.
The M4 is a full-fledged 3D helicopter with a controlled collective - and as such it assumes and requires adequate piloting experience. It's not a "drone" where you just add gas, it takes off and hangs "like a nail" without any steering intervention. The M4 will be thoroughly enjoyed by intermediate to advanced pilots who already have experience flying collective ("six-channel") helicopters. However, with a sufficient dose of perseverance, humility, previous diligent training on a computer RC simulator and under the supervision of an experienced pilot, even a novice helicopter pilot can start flying with the M4.
The helicopter kit includes: a complete set of mechanical parts, a SUNNYSKY R80-5 AC motor, rotor and balancer blades, construction and setup instructions.
| Carrier rotor diameter [mm] | 875 |
| Balancing rotor diameter [mm] | 190 |
| Body length [mm] | 786 |
| Width [mm] | 128 |
| Height [mm] | 226 |
| Weight [g] | 1370 |
| Controlled functions | M,Kl,Ko,Kp,Vr,Gyro |
| Difficulty of construction | S2, S3 |
| Difficulty of piloting | P3, P4 |
