RVE Merak E750 User manual

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RVE Merak E750
Assembly Instructions
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www.rverc.com 
V1.0 FEB 2019

RVE MERAK E750 - ASSEMBLY INSTRUCTIONS
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INTRODUCTION 4
ASSEMBLY RECOMMENDATIONS 4
MINIMUM REQUIRED TOOLS 5
OPTIONAL TOOLS 5
OTHER COMPONENTS REQUIRED 5
MAIN CHASSIS ASSEMBLY 6
TAIL PINION BEARING BLOCK (1-1) 6
MOTOR BLOCK (1-2) 7
SWASH CONTROL LEVERS (1-3) 8
TAIL CONTROL LEVER (1-4) 10
ESC SUPPORT (1-6) 10
CONTROL LEVERS AND CABIN SUPPORT INSTALLATION (2-1) 11
MAIN MAST BEARING BLOCKS AND ELEVATOR LEVER INSTALLATION (2-2) 13
BATTERY TRAY SUPPORTS INSTALLATION (2-3) 15
SKID SUPPORTS INSTALLATION (2-4) 16
ESC SUPPORT INSTALLATION (2-5) 16
ELECTRONICS TRAY INSTALLATION (2-7) 17
SKID SUPPORTS REINFORCEMENT AND VIBRATION DAMPERS INSTALLATION (2-8,
2-9) 17
MAIN GEAR AND
AUTOROTATION BLOCK ASSEMBLY (3-1) 18
TAIL GEAR ASSEMBLY (3-2) 19
TAIL PINION BEARING BLOCK AND TAIL BOOM SUPPORT INSTALLATION (3-3) 20
MOTOR BLOCK INSTALLATION (3-4) 21
MAIN MAST AND GEARS INSTALLATION (3-5, 3-6) 21
MAIN ROTOR ASSEMBLY 23
SWASHPLATE ASSEMBLY (4-1) 23
PHASE ARM ASSEMBLY (4-2) 24
CENTER HUB ASSEMBLY (4-4) 25
BLADE HOLDER ASSEMBLY (4-6) 25
SPINDLE SHAFT AND BLADE HOLDERS INSTALLATION (4-5, 4-7) 26
MAIN ROTOR INSTALLATION (4-4) 27
TAIL ASSEMBLY 28
TAIL PULLEY ASSEMBLY (5-1) 28
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RVE MERAK E750 - ASSEMBLY INSTRUCTIONS
TAIL CASE ASSEMBLY (5-2, 5-3, 5-4) 29
TAIL SLIDER ASSEMBLY (5-5) 30
TAIL PITCH LEVER ASSEMBLY AND INSTALLATION (5-6) 31
TAIL ROTOR ASSEMBLY AND INSTALLATION (5-7) 32
TAIL BOOM BRACES ASSEMBLY AND INSTALLATION (6-2) 34
SERVOS 35
SERVO INSTALLATION (7-1, 7-2, 7-3) 35
TAIL SERVO CONTROL RODS (7-4) 39
TAIL CONTROL ROD INSTALLATION (7-6) 40
PINION SELECTION 41
MAINTENANCE RECOMMENDATIONS 41
ASSEMBLY DIAGRAMS 42
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RVE MERAK E750 - ASSEMBLY INSTRUCTIONS
INTRODUCTION
RVE is committed to using technology and innovation to bring new feeling to helicopter
aerobatics.
The company regards "Refined Victory Equipment" as its main idea, strives to become a leading
brand in the field of remote control model helicopter competition, and redefines the precise flight
connotation of F3C with first-class technology and exquisite craft.
Since its establishment, RVE has always adhered to the spirit of "seeking quality and sincerity,
stimulating innovation". Always practice the concept and value of "precise, precise and
exquisite" products, and penetrate the outstanding innovative ideas into every detail of products,
showing the infinite possibility of flight.
The company's flagship aircraft is the MERAK 750 F3C competitive aircraft, which has been
verified and tested for a long time before finalization and mass production.
ASSEMBLY RECOMMENDATIONS
All the machined parts such axes and steel pinions should be carefully cleaned using Isopropyl
alcohol or universal spray lubricant (WD-40, Triflow...). Remove any shaving left after the
machining process.
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RVE MERAK E750 - ASSEMBLY INSTRUCTIONS
MINIMUM REQUIRED TOOLS
●Allen screwdriver: 1.5 mm, 2 mm, 2.5 mm, 3 mm and 4 mm
●Hex nut screwdriver: 5.5 mm and 7 mm
●Small Phillips screwdriver
●Wrench: 5.5 mm and 13 mm
●One-way wrench: 6 mm
●Universal ball link driver
●Drill: 3 mm
●Nose pliers
●Universal ball link pliers
●Scissors
●Small file
●Epoxy glue
●Universal spray lubricant
●Threadlocker: soft and medium
●Thrust bearing grease
●Silicon grease
●Light oil
●2 mm pin bars
●Digital pitch gauge
●Caliper
●Solder equipment
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OPTIONAL TOOLS
●Torque screwdriver with required bits
●Ball link caliper adapter
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OTHER COMPONENTS REQUIRED
●3 Cyclic servos
●1 Tail rotor servo
●6 ch. RC system
●Flybarless controller
● Electric motor, 440-560KV, 6 mm shaft, maximum 70 mm diameter
● ESC according to the selected motor
● RC power system, if not integrated within the ESC
● 12s 5000-6000 mAh LiPo battery ( 2 x 6s packs)
● Battery plugs (male/female)
● Motor plugs, if not included with the motor (male/female)
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RVE MERAK E750 - ASSEMBLY INSTRUCTIONS
MAIN CHASSIS ASSEMBLY
TAIL PINION BEARING BLOCK (1-1)
Both bearing blocks are identical. Please pay attention to the chamfer for a correct bearing
block orientation. While inserting the pulley, press it against the pinion and tighten the two M3
x 3 mm set screws using soft threadlocker. Insert the second bearing block and then secure it
with the M3 x 6 mm screw and flanged washer.
Optionally, lower bearing inner race can be fixed to the helical gear axis with soft threadlocker.
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***Recommended tightening torque:
0.8 Nm for the M3 x 3 mm set screws
1 Nm for the M3 x 6 mm screw
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RVE MERAK E750 - ASSEMBLY INSTRUCTIONS
MOTOR BLOCK (1-2)
The motor block is designed with an integrated third bearing and a special helical pinion. Only
motors using 6mm shaft are compatible. Several pinions, 10t, 11t and 12t are available. Follow
the recommendations from Pinion Selection chapter in order to choose the correct pinion.
Insert first the selected pinion into the motor block bearing and lock the pinion nut using
medium threadlocker.
Optionally, bearing inner race can be fixed to the helical gear with medium threadlocker.
Install the engine into the motor block, fixing it with the two M4 x 10 mm button head screws,
using soft threadlocker. Align the motor shaft flat surface with one of the pinion threaded holes
and use the two M4 x 4 mm set screws to secure it. If the motor doesn’t have a flat surface, it
can be done with its center at approx. 10mm from motor mounting surface.
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***Recommended tightening torque:
2 Nm for the M4 x 10 mm button head screws
1.2 Nm for the M4 x 4 mm set screws 
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RVE MERAK E750 - ASSEMBLY INSTRUCTIONS
SWASH CONTROL LEVERS (1-3)
Bearings are fixed to both elevator arm
and aileron levers using medium
threadlocker. Apply little threadlocker on
the outer bearing race, avoiding the
threadlocker to touch the shield.
Then insert the bearing on its place.
Be careful to not forget to put the brass
spacers into the inner part of aileron
levers.
Long M3 threaded balls are installed
using medium threadlocker into the
aileron levers’s long arm as shown in
the pictures.
***Recommended tightening torque:
1 Nm for the M3 threaded balls
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RVE MERAK E750 - ASSEMBLY INSTRUCTIONS
Insert the ball link into the elevator arm securing it with the phillips screw. It may be needed to
sand a bit the ball link’s cylindrical part in order to insert it into the elevator arm. Use a little
amount of medium threadlocker on the screw part in contact with the aluminum elevator arm.
Previous to install the elevator arm into the elevator lever (red part) place the flanged spacers in
the internal part of the elevator arm as shown. Secure both parts together with the M3 button
head screws, do not overtighten them. The elevator mechanism should move freely. 
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***Recommended tightening torque:
0.6 Nm for the M3 x 8 mm button head screws
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RVE MERAK E750 - ASSEMBLY INSTRUCTIONS
TAIL CONTROL LEVER (1-4)
There’s a short and a long threaded ball. Install them as shown on the pictures using medium
threadlocker. Secure the tail control lever to its support with the M3 x 14 mm screw and
medium threadlocker. Do not forget the brass spacer (washer) to assure good contact between
the bearing’s inner race and the support. Do not overtighten the mechanism, it should move
freely.
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ESC SUPPORT (1-6)
The carbon fiber ESC plate is secured two the aluminium supports with M3 x 8 mm flat head
screws using soft threadlocker. The kit includes XT150 connector brackets that can be
optionally used. Secure the brackets to the aluminium supports with the M2.5 x 8mm screws
and soft threadlocker.
***Recommended tightening torque:
1 Nm for the M3 threaded balls
0.6 Nm for the M3 x 14 mm screw
0.8 Nm for the M3 x 8 mm flat head and M2.5 x 8 mm screws 
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