Kavan OMPHOBBY M4 MAX

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M4 MAX

Instruction Manual / Návod ke stavbě / Bauanleitung

PRECAUTIONS:

This R/C model is not a toy. Use it with care and stricktly following the instructions in this

manual.

Assemble this model following stricktly these instructions. DO NOT modify or alter the mod-

el. Failure to do so, the warranty will lapse automatically. Follow the instructions in order to

obtain a safe and solid model at the end of the assembly.

Children under the age of 14 must operate the model under the supervision of an adult.

Assure that the model is in perfect conditions before every ight, taking care that all the

equipment works correctly and that the model is undamaged in its structure.

Fly only in days with light breeze and in a safe place away from any obstacles.

UPOZORNĚNÍ:

Tento RC model není hračka. Je určen k provozování osobami staršími 15 let.

Model dokončete a připravte k letu PŘESNĚ podle návodu. Model NEUPRAVUJTE, v opačném

případě automaticky ztrácí záruka svoji platnost.

Model provozujte opatrně a ohleduplně, důsledně se řiďte pokyny v tomto návodu.

Před každým letem se ujistěte, že model je v prvotřídním stavu, dbejte, aby všechny části

pracovaly správně, a model nebyl poškozený.

S modelem létejte na vhodné ploše bez překážek, stromů, elektrických vedení apod. Vyhle-

dejte bezpečné místo, mimo cesty a veřejné komunikace, dbejte na bezpečnost přihlížejících

diváků.

VORSICHTSMAßNAHMEN:

Dieses R/C Modell ist kein Spielzeug. Benutzen Sie es mit Vorsicht und halten

Sie sich an die Anweisungen in dieser Anleitung. Bauen Sie das Modell gemäß der Anleitung

zusammen. Modizieren und verändern Sie das Modell nicht. Bei Nichteinhaltung erlischt die

Garantie. Folgen Sie der Anleitung um ein sicheres und haltbares Modell nach dem Zusam-

menbau zu erhalten.

Kinder unter 14 Jahren müssen das Modell unter Aufsicht eines Erwachsenen betreiben.

Versichern Sie sich vor jedem Flug, dass das Modell in einwandfreiem Zustand ist, dass alles

einwandfrei funktioniert und das Modell unbeschädigt ist.

Fliegen Sie nur an Tagen mit leichtem Wind und an einem sicheren Platz ohne Hindernisse.

UPOZORNENIE:

Tento RC model nie je hračka. Je určený na prevádzkovanie osobami staršími ako 14 rokov.

Model dokončite a pripravte k letu PRESNE podľa návodu. Model neupravujte, v opačnom

prípade automaticky stráca záruka svoju platnosť.

Model prevádzkujte opatrne a ohľaduplne, dôsledne sa riaďte pokynmi v tomto návode.

Pred každým letom sa uistite, že model je v prvotriednom stave, dbajte, aby všetky časti pra-

covali správne, a model nebol poškodený.

S modelom lietajte na vhodnej ploche bez prekážok, stromov, elektrických vedení apod.

Vyhľadajte bezpečné miesto, mimo cesty a verejné komunikácie, dbajte na bezpečnosť pri-

zerajúcich

Need help?

Do you have a question about the Kavan OMPHOBBY M4 MAX and is the answer not in the manual?

The OMPHOBBY M4 MAX is a full-featured R/C helicopter model designed for all styles of rotary flight, from beginner stability to advanced aerobatics. It is not a toy and should be operated with care, strictly following the instructions in the manual. This model is intended for use by individuals aged 14 and older, with children operating it under adult supervision.

Function Description

The M4 MAX is a high-performance R/C helicopter that utilizes various high-tech products and technologies to deliver superior performance. It is capable of full aerobatic flight with virtually unlimited control power for advanced pilots, while also offering high flight stability for beginners. The model features a large pitch range main rotor design, ensuring extreme control power in any situation. Its highly compact flight mechanics and lightweight carbon fiber and aluminum airframe contribute to its agility and durability. The streamlined, low-wind-resistance canopy design enhances aerodynamic efficiency. For user convenience, an XT60 connector is frame-mounted for easy battery connection, and an open frame design facilitates wiring and serviceability.

Important Technical Specifications

Dimensions and Weight:

Length: 830 mm
Height: 226 mm
Main Blade Length: 420 mm
Main Rotor Diameter: 945 mm
Tail Rotor Diameter: 190 mm
Flying Weight: 1500 g

Motor:

Model: SUNNYSKY 8110
Type: V8110 KV185 36N42P
Weight: 308 g

Servos:

Tail Micro Servo (DS2312T):
- Operating Voltage: 4.8-8.4 V
- Signal Range: 500-1000 µs
- Max. Frame Rate: PWM 560 Hz
- Operation Angle: 140°
- Output Shaft: Ø5mm 25T
- Dead Band: 2 µs
- Stall Current: 1.7 A
- Speed (7.4 V): 0.073 s/60°
- Torque (7.4 V): 3.5 kg.cm
- Weight: 21 g
Cyclic Servo (DS2312C):
- Operating Voltage: 4.8-8.4 V
- Signal Range: 800-2200 µs
- Max. Frame Rate: PWM 333 Hz
- Operation Angle: 140°
- Output Shaft: Ø5mm 25T
- Dead Band: 2 µs
- Stall Current: 1.7 A
- Speed (7.4 V): 0.053 s/60°
- Torque (7.4 V): 4.9 kg.cm
- Weight: 21 g
Mini Servo (DS3515T):
- Operating Voltage: 4.8-8.4 V
- Signal Range: 500-1000 µs
- Max. Frame Rate: PWM 560 Hz
- Operation Angle: 140°
- Output Shaft: Ø5mm 25T
- Dead Band: 2 µs
- Stall Current: 3.4 A
- Speed (7.4 V): 0.051 s/60°
- Torque (7.4 V): 4.5 kg.cm
- Weight: 43 g

ESC (85A):

Continuous (Peak) Current: 85 A (120 A)
Input Voltage: 3-6 S LiPo/LIHV
BEC Output: 6.0 V, 7.4 V, 8.4 V / 10 A
Input/Output Wire: 2x 12AWG / 3x 14AWG
Dimensions: 67x33x20 mm
Weight: 66 g

Recommended Battery:

Weight: 310-360 g
Possible Max. Dimensions: 35x40x160 mm, 35x43x140 mm, 35x46x130 mm, 35x48x120 mm, 35x50x110 mm, 35x53x90 mm, 35x55x70 mm

Recommended Rotor Blades: RotorTech 420mm Ultimate, OMPHOBBY APEX 420mm

Usage Features

Assembly: The model requires careful assembly according to the provided instructions. Modifying or altering the model will void the warranty. Threadlocker and grease are essential for ensuring flying safety, with specific application points indicated by symbols throughout the manual. It is recommended to use only original replacement parts to ensure safe operation.

Flight Environment:

Fly only in safe areas, away from people, homes, and obstacles.
Avoid flying near buildings, high voltage lines, or trees.
Choose a legal flying field with flat, smooth ground.
For initial practice, using a training skid is recommended to reduce damage.
Do not fly in bad weather conditions such as rain, strong wind, snow, or darkness.

Pre-Flight Checks:

Before each flight, ensure the model is in perfect condition, all equipment works correctly, and there is no structural damage.
Check for proper pitch, roll, and collective compensation by tilting the helicopter and observing the swashplate movement.
Verify that the swashplate and rotor head mechanisms do not bind when cyclic and collective controls are moved to their maximum extents. Adjust flight control unit settings if binding occurs.

First Flight (Maiden Flight):

Take off the helicopter carefully. If the swashplate tilts before lifting off, do not manually trim it, as this is due to vibration feedback and will disappear once airborne. Manual trim will cause immediate tilting after takeoff.
During hovering, observe for rapid left/right or forward/aft oscillations. If present, land and decrease the corresponding gyro gain (pitch or roll) on the flight control unit until oscillations cease.
If the tail drifts or yaw response is delayed during hovering, reset the yaw neutral or adjust the yaw gyro gain. If the tail oscillates at hover or full throttle, decrease the yaw gyro gain.
During fast forward flight, if oscillations persist, reduce the pitch gyro gain. If the helicopter pitches up or responds slowly, increase the pitch gyro gain. Repeat until oscillations are eliminated. Apply a similar method for roll gyro gain.

Radio Setup:

A minimum 6-channel transmitter with heli program and three flight modes (Normal, Idle1, Idle2) and throttle hold is required.
Set the swashplate type to H1 (no mixes), with revomix and all other mixes inhibited, and subtrims zeroed.
Follow the instruction manuals of the ESC, FBL control unit, and RC set to properly configure servo neutrals, servo travel limits, gyro gain, governor, and other initial settings.

Recommended RPM Range and Collective Pitch:

Hovering: 1400-1800 RPM, -5°/+12° collective pitch.
Low RPM 3D: 1500-1900 RPM, +16° collective pitch.
Sport: 1600-1900 RPM, +13° collective pitch.
Aerobatics: 2000-2300 RPM, +13° collective pitch.
Soft 3D: 2300-2600 RPM, +13° collective pitch.
Hard 3D: 2600-2850 RPM, +13° collective pitch.
Extreme 3D: 3000 RPM, +12° collective pitch.

Maintenance Features

General Care:

Keep the model and associated equipment away from moisture and other contaminants to prevent malfunctions or crashes. Do not operate or expose to rain.
Store the model indoors, in a climate-controlled, room-temperature environment, away from heat sources like ovens or heaters, as plastic parts are susceptible to damage or deformation from extreme temperatures.

Rotor System Maintenance:

The main rotor hub thrust bearing and rubber dampers are subjected to high flight forces. Periodically inspect, lubricate, and replace them if worn or damaged.
When flying at high rotor speeds, reduce the inspection interval for these components.
Ensure that only precisely balanced tail rotor blades from reputable manufacturers are used. Even slight imbalances can cause high stress on the tail mechanics due to the very high RPM of the tail rotor during flight.
Properly tighten the main and tail rotor blades so they do not fall under their own weight but are still easy to move in the blade grips. Over-tightening can damage the blades and compromise flight safety.

ESC Calibration:

Perform throttle calibration for the first time using the ESC. This involves setting the throttle stick to full, connecting the battery, waiting for two beeps, then moving the stick to the bottom within 2 seconds. The motor will then beep to indicate the number of battery cells, followed by a "Beep... Beep" sound, signaling that the ESC is ready to operate.

Troubleshooting:

A comprehensive troubleshooting guide is provided to address common issues such as blade tracking, headspeed, yaw response, oscillations, drifting, and control response. Solutions typically involve adjusting linkage lengths, throttle curves, gyro gains, or replacing worn components.
If issues persist after following the troubleshooting steps, consult experienced pilots or contact an OMP HOBBY dealer.

Warranty: KAVAN Europe s.r.o. products are covered by a guarantee that meets legal requirements. The warranty does not cover faults caused by crashes, improper use, incorrect connections, reversed polarity, late or incorrect maintenance, unauthorized repairs, use of non-genuine accessories, accidental or deliberate damage, normal wear and tear, operation outside specifications, or use with equipment from other manufacturers.