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INSTRUCTION MANUAL
revision 0
Thank you for choosing OMPHOBBY products.The M4 is the latest
technology in rotary wing RC models, designed in Germany by Jonas
Wackershauser. Please read this assembly manual carefully before
assembling and flying your new M4 helicopter. We recommend that you
keep this manual for future reference.
WWW.OMPHOBBY.COM
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Summary of Contents for OMPHOBBY M4
- Page 1 Thank you for choosing OMPHOBBY products.The M4 is the latest technology in rotary wing RC models, designed in Germany by Jonas Wackershauser. Please read this assembly manual carefully before assembling and flying your new M4 helicopter. We recommend that you keep this manual for future reference. WWW.OMPHOBBY.COM...
- Page 2 OMPHOBBY products. Manufacturer and seller assume no liability for the operation or the use of this product. The OMPHOBBY M4 is intended for use only by adults with experience flying remote control helicopters at a legal flying field.
- Page 3 R/C models are made of various forms of plastics. Plastic is very susceptible to damage or deformation due to extreme heat and cold. Make sure not to store the model near any source of heat, such as direct, strong sunlight or a heater. It is best to store the model indoors, in a climate-controlled, room-temperature environment. 遥控飞机多半是以 纤维或聚乙烯、电子商品为主要材质，因此要尽量远离热源、日照、以避免因高温而变形甚至熔毁损坏的可能。 WWW.OMPHOBBY.COM...
- Page 4 When you see the marks as below, please use glue or grease to ensure flying safety. 标有以下符号之组装步骤，请配合上胶或上油，以确保使用之可靠度。 Apply Threadlocker Apply Petroleum-Based, Loosely Tighten 使用螺丝胶 Light Viscosity Lube 普通拧紧 添加润滑油 Apply Synthetic Fully Tighten Apply NO Threadlock 无需使用螺丝胶 完全拧紧 Grease 添加润滑油脂 Apply MEDIUM CA Repeat Multiple Times Use AB glue 使用瞬间胶固定 重复多次 使用 AB 胶 WWW.OMPHOBBY.COM...
- Page 5 高度紧凑的飞行力学设计 Highly compact flight mechanics design 碳纤维和铝机身轻量化设计 Lightweight carbon fiber and aluminium airframe design 流线型低风阻机头罩设计 Streamlined low wind resistance canopy design XT60连接器框架安装，便于电池连接 Frame mounted XT60 connector for easy battery connection Open frame design for easy wiring and serviceability 开放式框架设计，便于接线和维护 WWW.OMPHOBBY.COM...
- Page 6 Partially pre-assembled parts are loosely screwed together without thread locker/glue Recommendation: Loctite 243 for screws, Loctite 648 for bearing seats. 1-1 Cyclic Servo Assembly 16mm M4-101 ※ The ball joint screw should be screwed into the outer hole of the servo arm. Servo Swashplate ( × 3) ( ×...
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Page 7: Tail Servo Assembly
When the tail servo arm is in the middle position, the angle relative to the tail servo should be 115°, as shown above. Tail servo ( × 1) M4-103 Socket cap screw ( × 1) M2 Nylon locknut ( × 1) Servo Arm Ball Joint Screw - L4.65 ( ×... -
Page 8: Motor Assembly
Step socket cap screw ( × 2) rubber 2.5x 5x0.5mm ( × 2) M2.5x6mm (×2) ∅ ∅ M2.5x6mm (×2) M4-202 2.5x 5x0.5mm ( × 2) Shim ∅ ∅ Square Frame Brace ( × 1) Canopy frame ( × 2) support rubber X-Brace (×1) - Page 9 Socket cap screw These four screw holes are reserved for installation of the the M2.5x5mm ( × 4) motor roll bars in a later step. M4-204 Socket cap screw Main Plate (×1) M2.5x10mm ( × 4) Socket cap screw Socket cap screw M2.5x5mm ( ×...
- Page 10 Installation steps 安装步骤 2-5 Landing gear and flight controller M4-205 mount assembly Socket cap screw M2.5x8mm ( × 4) Canopy Mounting Post (×2) Swashplate Guidance Plate (×1) Swashplate Guidance Mount ( × 1) Swashplate Guidance Plate (×1) Canopy Mounting (×2)
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Page 11: Tail Rotor Assembly
∅ ∅ ※ Use the outer hole for long throw tail servos like the OMPHOBBY DS2312T. If you are using Socket cap screw Tail Housing Mounting Brace ( × 1) M2x6mm ( × 2) a short throw tail servo, use the inner hole to achieve adequate tail travel. - Page 12 Socket cap screw M2.5x8mm ( × 1) Tail Slider Ring Set ( × 1) Tail Rotor Shaft ( × 1) Tail Fin ( × 1) Socket cap screw M2.5x8mm ( × 1) Socket cap screw M2.5x8mm ( × 2) WWW.OMPHOBBY.COM...
- Page 13 Installation steps 安装步骤 Tail Control Rod Guide ( × 1) about 180mm about 270mm M4-301 Tail Case Side Plate ( × 2) Tail Fin ( × 1) Tail Pulley ( × 1) Tail Pulley Guidance Flange ( × 2) 5x58mm ( × 1) ( ×...
- Page 14 ※ Note: The round screw head seat must face outward M4-302 ※ Note: Make sure the tail mechanics are easy and smooth to move. If they aren’t, loosen the six tail case screws, then tighten them crosswise as indicated above.
- Page 15 Installation steps 安装步骤 Tail boom, tail servo linkage rod assembly M4-303 Tail servo linkage rod ( × 1) 4.5 linkage ball set ( × 2) Self-tapping screws Control Rod Joint ( × 2) M2x8mm ( × 1) ※ Pay close attention to the twist direction of the belt.
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Page 16: Swashplate Assembly
( × 1) M2x8mm ( × 1) Motor roll bar ( × 2) Socket cap screw M2.5x6mm ( × 4) M4-401 Swashplate ( × 1) 4-1 swash plate assembly Motor roll bar ( × 2) Swashplate Bearing Ball Joint Screw - L3 ( × 6) Retainer ( ×... - Page 17 Main Rotor Rubber Damper Shim 10x8 ( × 2 ) Shore ∅ ∅ 6.5x0.5mm ( × 2 ) ∅ ∅ ※ Socket cap screw The stepped side of the shim faces M2x16mm (× 2) outwards toward the blade grip. WWW.OMPHOBBY.COM...
- Page 18 When flying hard at high rotor speeds, the inspection interval should be reduced. Replace on condition to ensure flight safety. M4-402 6S Battery ( × 1) Battery strap ( × 2) Main rotor hub set ( × 1) 6S Battery ( ×...
- Page 19 ※ Please make sure to only use precisely balanced tail rotor blades from reputable manufacturers. The M4's tail rotor spins at very high RPM during flight, even slight imbalances in the tail blades can place high stress on the tail mechanics.
- Page 20 Recommended battery weight: 295-330g Possible max battery dimensions in mm: 35x40x160 35x43x140 35x46x130 35x48x120 FC ( × 1) 35x50x110 35x53x90 35x55x70 M4-404 Damping sticker ( × 1) FC ( × 1) ( × 1) FC Mounting Pad allation Canopy Installation Canopy Rubber ( ×...
- Page 21 Maximum Collective Pitch below 2000RPM: ±17° Maximum Collective Pitch above 2000RPM: ±14° Maximum Collective Pitch above 3000RPM: ±12° Recommended Rotor Blades: RotorTech 385mm Ultimate, OMPHOBBY 385mm. For running rotor speeds above 3000RPM, use of the 88t tail pulley is strongly recommended.
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Page 22: Motor Specifications
M2.5x5mm Washers Φ2xΦ4.3x0.5mm Washers Φ2xΦ8x0.2mm Washers Φ3xΦ4.5x0.2mm Washers Washers Φ5xΦ6x0.5mm Washers Φ2xΦ3.2x0.5mm Washers Φ8.05xΦ10x0.2mm ※ Add 8x10x0.2mm shims between motor and pulley. Adjust the amount of shims later as necessary to ensure the belt runs centered. Motor specifications WWW.OMPHOBBY.COM... - Page 23 Servo & Motor Spec 舵机与电机参数 Servo Spec OMPHOBBY M4 Micro Tail Servo Model 2312T Operating Voltage： 4.8V-8.4V Working Frequence： 500-1000us Control System： Connector： 3P Dupont Wire length： 220mm Servo Arm： 5mm 25T Operation Angle： 140 Deg Item： Spec Operating Voltage：...
- Page 24 ∅ ∅ Socket cap screw M2.5x6mm (×2) 5x2 . 5mm ( × 4) 5x2 . 5mm ( × 4) Bearing ∅ ∅ Bearing ∅ ∅ Ball Joint Screw - L3 ( × 2) 2.0x9.5mm (×4) Tail Pulley Pin ∅ WWW.OMPHOBBY.COM...
- Page 25 4x2mm (×2) Bushing ∅ ∅ Bushing ∅ ∅ Socket cap screw M3x14mm (×2) Socket cap screw M3x14mm (×2) Socket cap screw M2.5x5mm (× 4) 3.05x 4.5x0.5mm ( × 2) 3.05x 4.5x0.5mm ( × 2) Shim ∅ ∅ Shim ∅ ∅ WWW.OMPHOBBY.COM...
- Page 26 Socket cap screw M2.5x8mm ( × 2) Socket cap screw M2.5x8mm ( × 2) Socket cap screw M2x4mm ( × 2) Socket cap screw M2.5 x8mm ( × 4) 3.2x0.5mm ( × 2) 3.2x0.5mm ( × 2) Shim Shim ∅ ∅ ∅ ∅ WWW.OMPHOBBY.COM...
- Page 27 10x3mm (× 2 ) Bearing ∅ ∅ 7x1mm (× 1) Socket cap screw M2x6mm ( × 4) Shim ∅ ∅ Shim Ø2xØ4.5x0.2mm ( × 4) Socket cap screw M2x6mm (× 2) 3x3mm (× 1) Tail Slider Joint Bushing ∅ ∅ WWW.OMPHOBBY.COM...
- Page 28 配件编号 : OSHM4046 配件编号 : OSHM4047 配件编号 : OSHM4048 配件编号 : OSHM4049 Product name: 385mm Main blade Product name: OMPHOBBY 71mm Tail blade Product name: Battery Tray Set Product name: 6S 2000mAh HV Battery 配件名称 : 385 主旋翼 配件名称 : 71mm 尾旋翼桨...
- Page 29 Product name: Socket cap screw M2.5x5mm Product name: Socket cap screw M2.5x6mm Product name: Socket cap screw M2.5x8mm Product name: Socket cap screw M2.5x10mm 配件名称 : 圆柱头内六角螺丝 M2.5x5mm 配件名称 : 圆柱头内六角螺丝 M2.5x6mm 配件名称 : 圆柱头内六角螺丝 M2.5x8mm 配件名称 : 圆柱头内六角螺丝 M2.5x10mm WWW.OMPHOBBY.COM...
- Page 30 28.5x25.5mm (×1) Axle ∅ ∅ 12x3.5mm (×1) Bearing ∅ ∅ Socket cap screw M2x4mm (×8) Socket cap screw M2x4mm (×8) 14x4mm (×1) Bearing ∅ ∅ 4.3x0.5mm (×6) 4.3x0.5mm (×6) Shim ∅ ∅ Shim ∅ ∅ 12x1mm (×1) Shim ∅ ∅ WWW.OMPHOBBY.COM...
- Page 31 Product name: Tail Slider Sleeve 配件名称 : 沉头内六角螺丝 M2.5x6mm 配件名称 : 尾部滑块桥（黑色） 配件名称 : 尾部滑块桥（银色） 配件名称 : 尾部滑块套筒 Package: Hang tag +PE bag Model: OSHM4116 包装方式： 吊卡 +PE 袋 配件编号 : OSHM4116 Product name: Rod adjustment wrench 配件名称 : 拉杆调平扳手 WWW.OMPHOBBY.COM...
- Page 32 Zhuhai edge smart drive technology Co., Ltd www.omphobby.com 2023...
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