Compass 7hv Instruction manual
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Compass 7hv is an electric powered helicopter designed using state-of-the-art technology, offering exceptional performance and reliability. Its advanced design features ensure smooth and stable flight, making it ideal for both experienced and novice pilots. With its quiet, smooth-running electric motor, it provides a safe and enjoyable flying experience while minimizing noise and environmental impact. The model's lightweight construction and durable materials ensure longevity and resistance to wear and tear, allowing for extended use and enjoyment.
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Introduction
Congratulations on your purchase of the Compass Model Atom 7HV Electric Powered Helicopter. This model has been designed using the latest in state-of-the-art design technology. To achieve the best performance and reliability from this model, please read through these instructions carefully so you become familiar with the contents of this kit before assembly.
AMA Information
We strongly encourage all prospective and current R/C aircraft pilots to join the Academy of Model Aeronautics. The AMA is a non-profit organization that provides services to model aircraft pilots. As an AMA member, you will receive a monthly magazine entitled Model Aviation, as well as liability insurance plan to cover against possible accident or injury. All AMA charter aircraft clubs require individuals to hold a current AMA sporting license prior to operation of their models. For further information, you can contact the AMA at:
Academy of Model Aeronautics
5151 East Memorial Drive
Muncie, IN47302
Warning
The radio-controlled model helicopter contained in this kit is not a toy, but a sophisticated piece of equipment. This product is not recommended for use by children. Radio-controlled models such as this are capable of causing both property damage and/or bodily harm to both the operator/assembler and/or spectator if not properly assembled and operated. Compass
Model Ltd. assumes no liability for damage that could occur from the assembly and/or use/misuse of this product. Although the Atom 7HV is powered by a quiet, smooth-running electric motor, it should be assembled and operated with the same care as glow engine helicopters. When operating your Atom 7HV, please exercise caution and safety.
Warranty
The warranty covers defects in material or workmanship or missing components to the original purchaser for 30 days from the date of purchase. Compass Model Ltd. will replace or repair, at our discretion, the defective or missing component.
Defective components must be returned to our Distributor prior to replacement.
Any part, which has been improperly installed, abused, crash damaged or altered by unauthorized agencies is not covered.
Under no circumstances will the buyer be entitled to consequential or incidental damages. The components used in this kit are made from special materials designed for special applications and design strengths. We recommend that all replacement parts be original parts manufactured by Compass Model Ltd. to ensure proper and safe operation of your model. Any part used which was manufactured by any firm other than Compass Model Ltd. VOIDS all warranties of this product by Compass
Model Ltd.
Warranty Procedures
Mail all warranty information within 15 days of original purchase date. If service is required, send the component in question (if not missing) together with a photocopy of your bill of sale and an accurate description of the problem and part.
Ship components fully insured and prepaid. Compass Model Ltd. is not responsible for any shipping damages. We will, at our discretion, notify you of any costs involved, or ship it COD. You are required to pay all postage, shipping and insurance charges.
R/C Helicopter Safety
A model helicopter must be built exactly in accordance with the assembly instructions. Compass Model Ltd. has spent much time and efforts refining this product to make it reliable in operation and easy to build. Vibration and stress levels are high and all fasteners and attachments must be secure for safe operation. Safe operation is the responsibility of the builder/flyer and starts with careful construction and continues with selection and installation of reliable radio equipment and motor/engine.
The need for safety is nowhere greater than at the flying field. A number of guidelines for safe flight have been developed by experienced flyers and are set down here. It is urged that they be read, understood and followed.
Attention:
each country has its own security application which cannot be laid down here so prior to any flight request the rules to apply in your country/Flying field.
Attention Atom 7HV Limitations :
Atom 7HV Max. rotor head rpm: 2100 U/min
Atom 7HV Max. collective pitch range: +/- 12°
Guidelines for Safe R/C Helicopter Flight
• Fly only at approved flying fields and obey field regulations.
• Follow frequency control procedures. Interference can be dangerous to all.
• Obtain assistance from experienced pilots.
• The Guidance provided by experienced pilots is valuable and sometimes necessary.
• Know your radio. Check all transmitter functions before each flight.
• Be aware that rotating blades are very dangerous and can cause serious injury or even death.
• Never fly near or above spectators other modelers or animals.
• Do not fly r/c helicopter models near buildings, high voltage cables, trees or other obstacles.
• If you are a beginner, get help trimming and adjusting the model before you start the flight training.
• Don’t “track” the main blades by holding the tail boom. This is a temptation to builders who cannot hover yet and is very dangerous.
• Follow all recommended maintenance procedures for model, radio and motor.
• Only turn off the radio after the brushless motor is disconnected.
Necessary Items
In order to operate this model, you need to purchase the following items not kit-included.
6 channel or up radio and receiver.
3 standard servos.
1 rudder servo.
1 Flybarless Unit
1x LiPo Battery 12S or 2 6s Packs
1x HV BEC or Receiver Battery
BEC
Standard
Main Rotor
Threadlock Grease
Length: up to 710mm
Bearing Retainer
Hex Wrench Set
(1.5mm,2mm,2.5mm,3mm, 5mm)
Cutter Knife
Needle Nose Pliers
Phillips Screw Driver
Pitch Gauge
Ball Link Sizing Tool
Swash Plate Tool
Ball Link
Plier
Pre-assembly Information
When first opening your Atom kit, you will notice that all of the parts are packaged and numbered to coordinate with the assembly step numbers of this instruction manual. All small hardware (nuts, bolts, washers, etc.) for each step are packaged separately within the main parts bags. When beginning a section, you will need to open only the bag with the corresponding number to the section you are about to start. It is suggested that you place all of the hardware in an open container (e.g., servo case) during assembly so as not to lose any of the small parts. It may also be helpful to familiarize yourself with the various sizes of screws, bolts, nuts, etc., as illustrated in the appropriate assembly section before you begin assembly. In most cases, at the end of each assembly section, there should be no parts remaining. Great care has been taken in filling the bags with the correct quantity of parts and hardware for each section. However, occasional mistakes happen. In the event that you find a parts shortage or are in need of technical assistance, please contact your local Compass Model parts dealer.
In The Box
This model is packed according to assembling steps. Do not open all the bags at one time.
Open only one bag for each step of assemply when building.
Frame Set
Step 3
Motor Set
Step 1
Tail Set
Rotor Set
Step 2
Step 4
Swash Set
Linkages Blades
Symbols & Assembling
Canopy
Mishandling due to failure to follow these instructions may result in damage, personal injury or danger.
G
A
B
Use Blue Threadlock
Use Grease
Use AB Glue
Use Bearing Retainer
* Always apply blue Threadlock when fixing Bolts on Metal parts.
* Always apply green retainer where bearings has to be fit into metal parts.
* Do not over-tighten self tapping screws into plastic parts or you will strip the threads!
1
Servo
Pos
1
7
8
5
6
9
3
4
1
2
Description
M2.5x10 Socket Head Bolt
M2.5x12 Socket Head Bolt
M2x8 Socket Head Bolt
Stainless Ball
M2 Nut
Servo Bolt
Servo Spacer
M2.5x20 Socket Head Bolt
Servo Nut
2.5mm Washer
Use medium threadlock on all screws going into metal parts
Swashplate Servo
Installation
1
2
3
4
5
1
Qty
4
2
4
4
12
12
4
4
2
12
9
0 10 20 30 40
1
The Servo installation is done without the supplied Servo Rubbers. If you want to use the Rubber, please use
M2.5x12 Bolts, instead of M2.5x10.
For mounting the swashplate servos to the bearing blocks, tighten all bolts of the upper bearing block with medium threadlock. Fix the servos at the upper bearing block. Install the main shaft through all bearing blocks and push the middle bearing block up against the bottom of the cyclic servos. Tighten the four screws in the X-shaped parts that secure the middle bearing block. Now slide the main shaft up and down to make sure the bearing blocks are all aligned. If the main shaft doesn't slide freely, loosen the screws of the bearing blocks and tight them in a cross pattern. The bearing blocks must be aligned parallel to each other. You can control this by comparing the height of the bearing block in the long holes of the side frame. Do not forget to apply new threadlock when loosened a screw!
Use these long holes to adjust the middle bearing block to fit different servos.
Remove the black cap of the canopy standoff to loosen and tighten the screw for adjusting the bearing block.
Tail Servo
Installation
7
9
Tip
: Do not over tighten the four servo screws as it may damage the plastic parts.
6
8
2
Landing Gear
Pos
1
2
3
4
Description
M3x20 Socket Head Bolt
3mm Washer
3x5mm Set Screw
Skid Caps
Use medium threadlock on all screws going into metal parts
Qty
8
8
4
4
A
B
Use AB Glue
0
10 20 30 40
Tip
: Do not over tighten the four 3 x 5mm set screws as it can damage the landing struts.
2
1
3
A
B
4
1
Pos
1
2
6
7
8
3
4
5
3
Boom & Tail Rotor
Description
M3x75 Socket Head Bolt
3mm Washer
M3 Nylon Nut
M3X16 Socket Head Bolt
M3X25 Socket Head Bolt
M3X10 Socket Head Bolt
Boom Support Collar
M2.5X6 Socket Head Bolt
Qty
4
11
3
2
2
8
2
3
0
10 20 30 40
To pull the belt through the tail boom, slide a cord through the boom and fix the belt very carefully at the cord. You can also use a strand and bend a hook at one of the ends.
Crimping the belt damages the tensile cords and will result in premature failure!
Use medium Threadlock on all screws going into metal parts
Slide the tail case completely onto the boom, align it to the Compass writing and fix it with the clamp on the rear side. The two locking bolts ( 8 )must be screwed completely into the case to pierce the boom. After this step, the angle of the writing can not be adjusted any more!
Tip
: Do not tighten the bolt of the belt idler pulley yet, it will be adjusted later.
6
Tip
: You can use a very small drop of thin
CA glue to secure the pin in the tail pulley.
4
3
Be careful not to over tighten the bolts when attaching the tail rotor blades. The tail blades should be able to move with a slight amount of resistance within the tail blade holders.
8
2
6
Take special care to get the boom long enough into the tail assembly for correct tail length before you tight this bolt.
3
2
3
Boom & Tail Rotor
Tip
: Slide the tail boom clamp over the boom. Unscrew one of the ball links on the tail control rod. Screw it back on the control rod after installing it.
Tip
: Just install the screw, struts and nut temporary without tightening them to much.
5
Twist the tail belt 90° to the right before inserting it between the idler pulleys.
Slide the Tail Boom through the tail boom mount and between the idler pulleys
Do not crimp the tail belt and be sure that it is not turned in the wrong direction or more
3
2
0 10
20
30
40
3
1
2
Use medium threadlock on all screws going into metal parts
2
5
7
Tip
: Clip on the ball link on the tail control arm. Look which part of the tail control rod slides in the guide of the tail boom clamp to get the correct position for the heat shrink. Clip it off again and pull the tail control rod as far as possible to the rear. Slide the heat shrink over the tail control rod and shrink it carefully with a lighter.
The boom support collar (7) has one beveled side. This must face outside. Be careful when fixing the tail boom braces and arrange the collars to them.
Beveled Side
130 mm
Heat Shrink Plastic
Pos
1
4
5
2
3
6
4
Main Gear
Description
Main Shaft Clamp
M2.5x10 Socket Head Bolt
Main Shaft
M3X30 Socket Head Bolt
M3 Nylon Nut
M4x10 Socket Head Bolt
Do not over tighten the screw in the main shaft clamp, but fix it securely.
11mm
1
0
10 20 30 40
Qty
1
1
1
1
1
2 rim
After installing the main gear, mount the main shaft clamp below the upper bearing block with the rim facing towards the bearing. Push the main shaft down and the main shaft clamp up. The must be zero clearance.
Use medium threadlock on all screws going into metal parts
2
1
3
8.5mm
5
4
If you have to change the main gear, do not overtighten the bolts going into the hub or it may draft the main gear. Tighten the bolts in a cross pattern.
To intall the main gear, push the tail boom all the way in.
Pull the tail belt out at one side of the chassis and mount it on the main pulley. Then slide the main gear into the frame and align the holes over each other to fit the jesus bolt.
6
2 extra M4x10 Bolts are equipped here in case for optional motors.
4mm slot
To mount Motors with different hole measurements, use 2 of the 4 slots in the motorplate. The 4mm slots for motors with
M4 screws and the 3mm slots for motors with M3 screws.
Only 2 screws are necessary in this case.
3mm slot
Motor And Drive Tips
Use medium threadlock on all screws going into metal parts
Gear backlash adjustment:
For smooth operation and performance, it is necessary to adjust the gear backlash properly. Excess gear backlash can cause premature gear wear and damage. Insufficient gear backlash can cause vibration, as well as overheating of the Motor and speed controller. Adjust the gear backlash by placing one piece of paper between the gears to set the distance. When the bolts are secure, remove the paper and test the gear backlash to insure that there is a slight amount of free movement between the gears.
To adjust the correct backlash between the motor pinion and the main gear loose the 4 motor mount bolts on each side , then fix them tightly with threadlock.
Tip
: Use a pressure resistant extra sticky grease on the maingear to reduce abrasive wear and noise. Grease it every five flights for the first 20 flights. Check the gear backlash especially in the first 20 flights. Apply some grease when you recognize that the main gear gets „dry“.
Tip
: Choose a low kv motor so you can use 14t or higher pinion for good contact with the main gear to prevent excessive wear on the main gear.
Motor Setup And Maintenance Tips
: Use at least 5.5mm gold connectors with an even surface for your motor wires and ESC wires. Use heat shrink and look for a good isolation. Check all wires and connectors regularly for good fitting and damage. Damaged wires and connectors can cause severe damage to your model and equipment! Oil the motor bearings each 10 flights and change them if they make strange noises or when the motor gets clearance at the shaft or bell.
Soldering Tips
: Use a soldering iron with atleast 80W and SN60PB40 brazing-solder. The temperature should be around 380°C. Use a non-conductive heat resistant surface and clamps or pliers to hold the connectors and wires. Do not heat the connectors and wires to long. The braze point must be shiny and even. If you have problems with the soldering, ask a experienced modeler for help. Due to extreme high currents of up to 200 Amps and mechanical stress to the connections, good soldering points are very important to guarantee a safe function of your power system.
Use blue threadlock on all screws going into metal parts.
swing range
Tip
: If the rubber gets older, you can increase the tension by opening the two screws in the holder and sliding it to the rear in the long holes.
Tip
: Check the rubber from time to time for cracks and refractory material.
Adjusting the belt tensioner is pretty easy. Just remove the rubber ring and adjust the tension as usual. After remounting the band, the tensioner should swing in 1/3 of his possible travel– if it swings more in then the tension is to lose.
Increase it by removing the band again and move the tail boom further to the rear. Use the four screws in the tail boom mount to fix the boom.
Check the belt tension sometimes.
Readjustments may be needed after a while or big temperature differences.
Tip
: Fix the tail boom clamp later, so you can adjust the angle for a perfect smooth running tail control.
Adjust the belt idler pulley with a distance of
0.2-0.3mm to the tightened belt. Do not over tighten the screw as it may result in a bent tail case and sluggish bearings.
Pos
5
6
7
8
9
1
2
3
4
5
Rotor,Washout & Swashplate
Description
M4x25 Socket Head Bolt
M4x30 Socket Head Bolt
Preassembled Rotor Head
3mm Washer
4x8x3 Flanged Bearing
M4 Nylon Nut
M3x14 Socket Head Bolt
Swashplate Guide
M2.5x10 Socket Head Bolt
Qty
4
1
2
1
2
1
2
1
4
Be careful not to overtighten the two clamping screws (7) in the main rotor hub.
1
3
0 10 20 30
The Jesusbolt (6) just carries the torque.
Tighten it firm but do not use to much force.
40
Do not overtighten the two
M4x30 socket head bolts (2) as it may result in sluggish bearings in the A-arm
Use medium threadlock on all screws going into metal parts
Mount the mainrotorhead using the upper hole
2 4
5
VERY IMPORTANT:
The feathering/spindle shaft screws are not secured. You have to clean the shaft from the inside and the screws with alcohol and secure them tightly with threadlock!
5
4
6
Install the linkage for the elevator servo at the swashplate before you mount the swashplate guide.
7
9
8
Use some light oil on the main shaft for a smooth travelling swashplate and clean it regularly.
Thrust Bearing Direction
Main grips are factory preassembled; in case of reassembling make absolutely sure you use the correct “ID”(inner diameter) ring at the correct position. Place the large ID towards the main shaft and the small ID towards the blades during assembly.
Apply Grease Here
Main Grip
Larger ID
(IN)
Smaller ID
(OUT)
6
Suggested Equipment Position
Take some time for the wiring.
Good fixing of the components and wires is important for a safe operation of your rc-equipment.
Read the following wiring tips carefully.
Brushless Motor
Aileron
Esc
12S Battery
0
10 20 30 40
Pitch
Elevator
Rudder
Receiver
FBL Unit
Please read the manual of your
FBL-Unit, transmitter and receiver very attentively. Each
FBL-Unit is different, follow the manuals step by step and ask for help if you have problems with the programming and installation.
ESC
FBL
BEC
Ch6
7
Linkage Length & Setup
Do not apply plier to resize Ball Links. Pliers could cause hidden damage to Ball Links and result in failure when operation.
Use medium threadlock on all screws going into metal parts and nuts.
Do not use pliers or screwdrivers to screw the ball links onto the linkages.
It can damage the ball links and result in failure. Screw them on by hand or use special tools.
10 20 30 40
Compass Model ball links are build up on the tight side. This allows you to adjust them to your personal needs. Use a ball link sizing tool to adjust the ball links. Clip the ball link on the corresponding ball where it will be later and test if it moves freely. If not, clip it on the ball link sizing tool and rotate it a few turns in different angles. Test it again on the ball. When you level the whole linkage horizontally, the linkage should almost flip downwards by ist own weight. Do the resizing in small steps and test the fitting every time. If any ball link has clearance on the ball, change it and do not use it again.
m
.5
7
1 m
All ball links must be clipped on the balls with the Compass writing facing to the outside.
Tip:
You can make your own ball link sizing tool. Just use a Dremel with a thin cutting wheel to cut two slots opposite to each other into a ball you don´t need. Stick a screw through the ball and screw a nut on the other side to fix the ball. You can clip ball links onto this tool and use it as described above.
Check all ball links for clearance and damages everytime you go flying and change worn ball links early.
The length of the plastic drive tube can be changed easily by turning the ball link in and out.
Linkage Lengths:
Servo Horn to Servo center: about 17.5mm
Servo to Swash: about 57mm inner edge to inner edge
Swash to A connector: 58mm inner edge to inner edge as per picture.
Tail Setup
90°
At zero position, the servo arm should be at 90°. Use the best fitting servo arm and read the manual of your FBL-
Unit how to adjust the servo midposition.
Adjust the linkage length so that the slider is parelel to the tail case side wall.
It is important to limit the servo travel to the endpoints of the slider shown below. Too much travel can cause a stall and lead to a loss of tail authority.
A
B
Clockwise Position
Counter Clockwise Position
Set the limit of the tail servo to A from slider to bearing.The table blow gives the value of A for different blades and rotor head rpm.
With the tail pitch slider in this position, the helicopter will turn clockwise.
Set the limit of the tail servo to B from slider to bearing.
The table blow gives the value of B for different blades and rotor head rpm.
With the tail pitch slider in this position, the helicopter will turn counter clockwise.
Headspeed 1400-1800 Headspeed 1800-2100
Travel A Travel B Travel A Travel B
Stock Plastic 2mm
KBDD 104mm 2mm
Compass 115mm 3.5mm
Most CF 105mm 3mm
17mm
17mm
16mm
17mm
2mm
2mm
4mm
3mm
16.5mm
16.5mm
16mm
16.5mm
Adjusting the gyro direction:
To adjust the gyro direction, read the manual of your fbl unit. Look at the heli from behind.
When you turn the nose to the left (counter clockwise), the tail pitch slider must go towards the tail rotor hub and away from the tail case.
When you turn the nose to the right (clockwise), the tail pitch slider must move towards the tail case and the bearing.
Doule check this step!
Wiring Tips
Never use RC-components with damaged wires. Check all wires for damaged isolation and breakage. Control all servo connectors for a tight fit and be sure no wire is loose in the connector.
All wires must be protected against damage through sharp edges of the carbon frame and metal parts. Zip ties can also cause damage to the wires.
Tip:
Cut open a piece of fuel line to cover sharp edges.
You can also use fuel lines to cover zip ties to prevent them from damaging the wires.
Carbon fibre and metal parts are conductive . Open wires, contacts and open gaps between two contacts touching the frame can cause a short curcuit and damage to the RC-Equipment.
the RC-Equipment.
Tip:
The best way to protect your wires is to use braiding sleeve such as those used for computer wiring or casemodding. Seal the ends of the sleeve with heat shrink to prevent them from unraveling. You can also you use heat shrink to protect wires where zip ties overlie.
Keep all wires as short as possible. Avoid unnecessary extensions and connections, but use extensions if a wire is almost to short to avoid mechanical tension in the wiring. Never tighten a wire to much. Be sure that nothing pulls at a wire. It is very important to have zero tension between wires, plugs and RC-Components.
Do not pull out connectors by pulling at the wires!
Do not fold any wire, place them in curves.
Keep all wires away from rotating parts, linkages and servo arms.
Tip:
Use a plier to bend zip ties before you use them. It wil be easier to get them around a corner.
Tip:
Secure connectors with heat glue at the receiver and
FBL-Unit. Avoid contact of the glue with stickers and the wires. The glue is easy to remove.
Be careful when heating heatshrink on wires, don´t heat it up to long or with to much heat or it may damage the isolation.
Control all wires and connections regularly to discover hidden damages and defective contacts early. Never go flying if any failure occurs!
FBL Setup Tips
Please read the manual for the current software version of your FBL-Unit carefully and follow all instructions. We can't give you any specific tips because most brands of FBL-Units change their software from time to time and your setup depends on many other factors like used blades and servos. Please check our website to find some setups from our Teampilots.
Tip:
For easy measurement of the pitch angles during the setup, please use something long and straight (like a flybar or CF-Tube) and put it on the upper servo mount behind the servorods.
With this trick you can easily use the pitchgauge to check the collective and cyclic angles.
Tip:
All servo horns must be at 90° (horizontally). Try all possible positions of the servo horn to get as close as possible to 90° at neutral servo position. Keep all swashplate linkages at exactly the same length. Level the swashplate horizontally in all directions, therefore read the manual of your FBL-Unit and follow the instructions!
If you have vibrations it is better to find the source than using a softer tape. All wiring to the FBL-Unit must be done without tension and not to stiff. If you use some kind of cover to protect the wires, please remove it on the last 3-5cm to make sure that vibrations can’t be carried to the unit – which will cause strange behaviour like unwanted movements of the helicopter.
Remove all kind of grease and oil from the radio tray and the bottom of the FBL-Unit with alcohol or something similar.
Please place your FBL-Unit extremely carefully in your helicopter. It is important that the unit is in a perfect 90° angle to all axes to get best performance. A wrong mounted unit can cause a wobble during piro-manouvers.
A perfect CG (Center of Gravity) is very important to get a perfect flying model. The CG must be exactly under the mainshaft. Adjust the CG by positioning the battery to the front or to the rear on the battery tray. You can also change the position of the battery tray with the three mounting holes in the side frames. The CG should be measured with all parts including the canopy.
Tip:
There are two methods to find out where the CG is. The first method is to hold the model under the main blade grips and look if it tilts forwards or backwards.
You can also hold the model at the main blade grips and fixed main rotor blades with the main shaft leveled horizontally. Look with the canopy facing to the right and then facing to the left (due to the free wheel) if the nose or tail tilts down.
If the nose tilts down, you have to put the battery more to the rear, do the opposite when the tail tilts downwards.
FBL Setup Tips 2
Look at the helicopter from the side to test the
elevator
gyro direction.
Double check the gyro directions of your fbl unit!
Incorrect gyro directions will cause a crash!
Checking the swasplate and tail gyro directions is a part of the preflight check!
Tilt the helicopter forwards as shown in the picture. The swashplate must tilt backwards.
Tilt the helicopter backwards as shown in the picture. The swashplate must tilt forwards.
Watch the helicopter from the front/canopy to test the
aileron
gyro direction.
Tilt the helicopter to the left, the swashplate must tilt to the right as shown in the picture.
Tilt the helicopter to the right, the swashplate must tilt to the left as shown in the picture.
8
Control Check
The picuture below shows how the swashplate has to move in mode 1 or mode 2.
Mode 1
Mode 2
Swashplate Reaction
Tilt Right
Tilt Left
Aileron Check
Tilt
For ward
Tilt Backward
Elevator Check
Pitch Check
Ascent
Swash Plate
Descent
Tail Pitch Plate
Slide left
Slide Right
Rudder Check
9
Canopy
A A
B B
Use AB Glue
10
20
30
40
Place the canopy onto the frames and mark the right position of the canopy insert. Mark the positions of the holes in the anopy on the
Insert for drilling. Use a 2mm drill and drill straight through the insert. Use AB glue to fix the insert and screw it from the outside into the canopy.
Pos
1
2
3
4
5
Description
M2.5x8 Self Tapping Bolt
Canopy Insert
M3x8 Socket Head Bolt
Thumb Screw
Canopy Rubber Grommets
1
2
A A
B B
4
3
5
Qty
2
1
2
2
2
10
Grounding
Belt-driven tailrotors can produce a high amount of electricity.
The discharge can cause a blockage of the radio signal and the
RC-Components. If you have transmission problems and/or problems like hard tail kicks and lockouts during flight, you have to ground the tail. We recommend to ground each helicopter for safety reasons if you are not sure if everything works without failures.
To ground the helicopter, use a piece of fine sandpaper to remove a little bit of the black anodizing between the two tail boom clamps in the frame with care. Do not modify the tailboom behind the tail boom clamps! Use a piece of silicon wire with a diameter of at least 1mm² and skin one end. Attach the open end to the tail boom with one or two zip ties. Lay the wire to the motor, skin the other end and attach the wire to one motor screw by jamming the open end under the screw.
10
20
30
40
Do not use a file, rasp, knife or coarse sandpaper to remove the anodizing. Deep scratches will damage the structure of the tail boom and can cause a breakage of the tail boom!
11
Rotor Direction & Blades
10 20 30 40
When the main rotor spins clockwise the tail blades should turn clockwise as well watching the tail rotor from the tail fin side. If not, the belt is twisted and has to be corrected.
Be sure that the main rotor and tail rotor blades are installed in the right direction. The leading edge has to show into the rotor directions.
Do not overtighten the blades. The main rotor blades should not be able to retract when you hold the helicopter sideways with the mainshaft and both blades horizontally. Do not thighten the blades much stronger than this and use the washers delivered with the blades.
Do not grind the blades if they don´t fit. Ask the manufacturer for other washers.
Use the same amount of washers with the same thickness over and under the blades!
12
Blade Tracking
10 20 30 40
The get a helicopter without vibration issues and, perfect flight abilities and low power consumption, you have to track the main rotor blades. The first step is to have identical lengths from the end of the ball link on the plastic drive tube to the metal arm.
In most cases, the blade tracking will be fine after doing this. To check it during the flight, get the help of an other pilot for safety reasons. Get in a hover and ask him to watch the rotor disk. Both blades must be in one line. If there are two disks or the blades appear thicker than they are, you have to readjust the blade tracking by turning in and out the ball links in the plastic drive tubes. Mark one blade or blade grip and turn in or turn out the ball link of this blade by one turn. Remember the direction. Hover the helicopter again, if it gets worse, turn back the ball link and rotate it one turn in. If it get´s better but is not perfect, turn the ball link of the other blade out by one turn and hover again. The blade tracking should be perfect now. If not, an issue with the rotor blades is likely. Do not fly with these blades. Also check all linkages, balls, ball links and the swashplate links for clearance.
Do not check the blade tracking on the ground alone or with negative pitch.
Read the following pages before you go to test this!
Do not fix the helicopter to the ground or any object.
Keep some distance to the model and do not test this indoors!
COMPASS MODEL (HK) LIMITED www.compassmodel.com
Parts List
7 HV
Version 3.0/2012
Copyright @Compass Model 2012
As we continue to improve our products, this part list may not reflect all recent product amendments.
For more information, please refer to www.compassmodel.com
91-0004
80-0312
09-7067S
09-0109
05-0119
05-0117
80-0421
82-4264
80-0430
80-0325
09-7101
61-4083
80-5285
79-0512
82-5131
60-8165
82-821003
63-8165
05-0102S
91-0005
09-7068S
80-0304
80-0312
82-4264
09-7069S
09-7025S
81-0328
02-0709S
09-7067S
09-7069S
09-7025S
09-7068S
05-0102S
Part No.
02-0709S
05-0102S
05-0117
05-0119
09-0109
09-7025S
09-7067S
09-7068S
09-7069S
09-7101
60-8165
61-4083
63-8165
79-0512
80-0304
80-0312
80-0325
80-0421
80-0430
80-5285
81-0328
82-4264
82-5131
82-821003
91-0004
91-0005
Part Description
Ball Links
Metal Main Grips 7Hv
Spindle
Spindle Washer (90)
7Hv Dampner
7Hv Fbl Drive Tube
7Hv Center Hub
7Hv Main Grip Arm
7Hv Fbl Arm Connector
7Hv Fbl Connector Collar
Ball Bearings 8X16X5
Flanged Bearings 4X8X3
Thrust Bearings 8X16X5
Button Head Bolts M5X12
Cap Head Bolts 3X4
Cap Head Bolts M3X12
Cap Head Bolts M3X25
Cap Head Bolts M4X21
Cap Head Bolts M4X30
Shanked Bolts M5X28.5
Set Screws M3X28
Washers 4.2X6X0.4
Washers 5.1X13X0.1
Washers 8.2X10X0.3
Nylon Lock Nuts M4
Nylon Lock Nuts M5
Qty,
10 pcs/bag
1 pcs/bag
2 pcs/bag
2 pcs/bag
2 pcs/bag
1 pcs/bag
1 pcs/bag
1 pcs/bag
1 pcs/bag
2 pcs/bag
2 pcs/bag
4 pcs/bag
2 pcs/bag
10 pcs/bag
2 pcs/bag
10 pcs/bag
10 pcs/bag
2 pcs/bag
10 pcs/bag
2 pcs/bag
10pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
2 pcs/bag
02-5264
02-8205
60-7113
90-0201
91-0003
60-4094
80-0208S
02-0209
02-0701
91-0003
60-3092
82-3402
63-4094
81-0305
02-0205
02-0264AB
80-0314
80-0208
02-1211
60-7113
06-0222
05-0229S
02-0213 80-0338 61-5134
98-2040B
02-0225
09-7048
06-0223
09-8023
02-0214
84-0214
82-327408
91-0003
09-7079
09-7023
06-0223
09-8051
80-0310
09-7051
09-7075
09-7050
09-7007
82-3201
80-0310
80-2510
09-7066S
80-0208S
80-0310
80-0314
80-0338
80-2510
81-0305
82-327408
82-3402
84-0214
90-0201
91-0003
98-2040B
Part No.
02-0205
02-0209
02-0213
02-0214
02-0225
02-0264AB
02-0701
02-1211
05-0229S
06-0222
06-0223
09-7007
09-7023
09-7048
09-7050
09-7051
09-7066S
09-7075
09-7079
09-8023
09-8051
02-8205
02-5264
60-3092
60-4094
60-7113
61-5134
63-4094
80-0206s
80-0208
Part Description
Tail Blade Links W. Pin
Tail Rotor Hub
Tail Pitch Slider
Tail Shafts
Grooved Pin 2X10
Tail Blade Holder Set
Stainless Link Balls
Tail Pitch Plate W, Bb
Tail Pitch Slider W,Bb
Guide Pin Bolts
Pin 2X24
Tail Fin
Tail Pitch Connector
Tail Pitch Arm
Tail Gear Box Frames
Tail Gear Box
Tail Guide Wheel
Tail Pulley
7hv Tail Hinge
7Hvtail Pitch Lever Set
7Hv Metal Gear Box
Tail Pitch Control unit
Tail rotor hub assembly (plastic)
Ball Bearings 3X9X2.5
Ball Bearings 4X9X4
Ball Bearings 7X11X3
Flanged Bearings 5X13X4
Thrust Bearings 4X9X4
Cap Head Bolts 2X6
Cap Head Bolts M2X8
Cap Head Bolts 2X8 special made for ball
Cap Head Bolts M3X10
Cap Head Bolts M3X14
Cap Head Bolts M3X38
Cap Head Bolts M2.5X10
Set Screws M3X5
Washers 3.2X7.4X0.8
Washers 3.3X5.2X0.3
Spring Pin 2X14
Nuts M2
Nylon Lock Nuts M3
3M 8Mm Wide 2040 Belt
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
1 pcs/bag
Qty,
2 pcs/bag
1 pcs/bag
1 pcs/bag
2 pcs/bag
4 pcs/bag
2 pcs/bag
10 pcs/bag
1 pcs/bag
1 pcs/bag
2 pcs/bag
4 pcs/bag
1 pcs/bag
1 pcs/bag
1pcs/bag
1 set/bag
1 pcs/bag
1 set/bag
1 set/bag
1pcs/bag
1 set/bag
1 set/bag
1 set/bag
1 set/bag
4 pcs/bag
5 pcs/bag
2 pcs/bag
2 pcs/bag
2 pcs/bag
10 pcs/bag
10 pcs/bag
80-0332
09-7058
60-6155
09-7053
07-4312(12T)
07-4313
07-4314(14T)
81-0404
80-0410
(for optional motors)
80-0308
02-0701S
05-0606S
80-0310
09-7059
08-4928
60-8196
05-0602Z
60-15245
09-7102
05-8401
02-0701
80-0225
09-7056
09-7103
60-17265
62-162216
05-4602
08-4926
60-8196
08-4927
C-4926
80-0512SS
80-2508
91-0004
81-0404
80-0308
09-7026
09-7070
80-0430
Part No.
02-0701
02-0701S
05-0602Z
05-0606S
05-4602
05-8401
07-4312
07-4313
07-4314
09-7026
09-7053
09-7056
09-7058
09-7059
09-7070
09-7102
09-7103
08-4927
08-4928
60-15245
60-17265
60-6155
60-8196
62-162216
80-0512SS
80-0225
80-0308
80-0310
80-0332
80-0410
80-0430
80-2508
81-0404
91-0004
SZ4926
Part Description
Stainless Link Balls
Solid Link Balls
Autorotation Hub W,One Way
Bearing
Mast Lock Clamp
Main Gear
7Hv Swash Plate
Pinion Gear (12T)
Pinion Gear (13T)
Pinion Gear (14T)
7Hv Main Pulley
7Hv Motor Mount Spacer
Swash Plate Pin
7Hv Motor Mount Top
7Hv Motor Mount Bottom
Main Pulley Hub
7Hv Main Shaft
Autorotation Sleeve
Motor shell for SZ4926
Motor cover for SZ4926
Ball Bearings 15X24X5
Ball Bearings 17x26x5
Ball Bearings 6X15X5
Ball Bearings 8x19x6
One way bearing 16x22x16
Stainless Cap Head bolt M5x12
Cap Head Bolts 2X25
Cap Head Bolts M3X8
Cap Head Bolts M3X10
Cap Head Bolts M3X32
Cap Head Bolts M4x10
Cap Head Bolts M4X30
Cap Head Bolts M2.5X8
Set Screws M4X4
Nylon Lock Nuts M4
12S Motor for 7hv kv510
Qty,
10 pcs/bag
10 pcs/bag
1pcs/bag
1 pcs/bag
1pcs/bag
1set/bag
1 set/bag
1 set/bag
1 set/bag
1pcs/bag
3pcs/bag
1set/bag
1 pcs/bag
1 pcs/bag
1 pcs/bag
2pcs/bag
1pcs/bag
1pcs/bag
1pcs/bag
2 pcs/bag
2 pcs/bag
2 pcs/bag
2 pcs/bag
1 pcs/bag
2 pcs/bag
1pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
1 pcs/bag
a:78-0310 b:80-0308 c:80-2506 d:82-3201 e:91-0003
09-7073 b
80-0375
80-2520
09-7001Ra
09-7011 d a a d a a
09-7005
85-0001
09-7018
09-7042Z a a a a
09-7004
09-7045S
09-7002a
09-7008S
09-7044 d b
60-10195 e
09-7060 b d
09-7001L a
80-0306 d b d d d d b d b b c c d d b b b d b
02-0820
09-7061
09-7109 c c
09-7055
80-0325
80-0310 d b
91-0003
09-7082 d e d e d e d
79-0306 e d
09-7062
09-7081
80-0322
79-0310
82-3507
60-3095
09-7064
09-7071A
82-3504
61-3062
60-3095
82-3507
61-3062
91-0003
02-0918
09-7092
80-0330
09-7078S
79-0308
82-3507
79-0310
09-7009
09-7062
09-7009
79-0308
09-7078S
78-0310
Part No.
02-0820
02-0918
61-3062
78-0310
79-0306
79-0308
79-0310
80-0306
80-0308
80-0310
80-0322
80-0325
80-0330
80-0375
80-2506
80-2520
82-3201
82-3504
82-3507
85-0001
91-0003
09-7061
09-7062
09-7064
09-7071A
09-7073
09-7078S
09-7081
09-7082
09-7092
09-7109
60-10195
60-3095
09-7001La
09-7001Ra
09-7002a
09-7004
09-7005
09-7008S
09-7009
09-7011
09-7018
09-7024
09-7042Z
09-7044
09-7045S
09-7055
09-7060
Part Description
Skid End Caps
Servo Nuts
Upper Frame Left
Upper Frame Right
Lower Frame
Receiver Mount
7Hv Gyro Mount
Battery Tray
Guide Wheel Frame
Canopy Break-Off
Battery Lock
Servo Spacer
Bearing Block W, Bearing
Battery Tray Connector
Receiver Stand Off
Boom Support Collar
7Hv Boom Clamp
Battery Tray Stand Off
Belt Tension Collar
Guide Wheel Collar
7Hv Belt Guide Wheel(new)
Canopy Stand Off
Belt Tension Mount
Rubber Band Mount
Rubber Band Seat
Rubber Band
Canopy Spacer
Ball Bearings 10X19X5
Ball Bearings 3X9X5
Flanged Bearings 3X6X2
Flat Head Bolts M3X10
Button Head Bolts M3X6
Button Head Bolts M3X8
Button Head Bolts M3X10
Cap Head Bolts M3X6
Cap Head Bolts M3X8
Cap Head Bolts M3X10
Cap Head Bolts M3X22
Cap Head Bolts M3X25
Cap Head Bolts M3X30
Cap Head Bolts M3X75
Cap Head Bolts M2.5X6
Cap Head Bolts M2.5X20
Washers 3.2X10X1
Washers 3.2X5.2X0.4
Washers 3.2X5.2X0.7
Clamp pin
Nylon Lock Nuts M3
Qty,
4 pcs/bag
5 pcs/bag
1 pcs/bag
1 pcs/bag
1 pcs/bag
1 pcs/bag
1 pcs/bag
1 set/bag
2 pcs/bag
2pcs/bag
1 set/bag
2 pcs/bag
1 set/bag
1 pcs/bag
2 pcs/bag
2 pcs/bag
2 pcs/bag
2 pcs/bag
2 pcs/bag
4pcs/bag
2 set/bag
2 pcs/bag
1 set/bag
1 pcs/bag
1 pcs/bag
1 pcs/bag
1pcs/bag
4 pcs/bag
2 pcs/bag
4 set/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
4 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
2pcs/bag
10 pcs/bag
09-7022
80-2510
09-7003
09-7041
80-0308
82-3504
80-0308
80-0208S
02-0701
90-0201
80-2510
80-0308
09-7200P
(Painted)
09-7200W
(Unpainted)
80-0308
82-3504
E-LG-09
02-0709S
09-7047
09-7006
09-7010
80-0320
02-0820
82-3504
80-0316
02-0821C
05-0833
81-0305
02-0820
05-0814
VBT300
09-7012
91-0004
09-0820
F-40-4700
85-0002
80-0325
09-7080
Part No.
02-0701
02-0709S
02-0810B
02-0810SG
02-0813S
02-0820
02-0821C
02-0853
05-0814s
05-0833
06-0851
09-0820S
09-7003
09-7006
09-7010
09-7012S
80-0305
80-0308
80-0316
80-0320
80-0325
80-2508
80-2510
81-0305
82-3504
85-0002
90-0201
09-7021
09-7022
09-7041
09-7047
09-7072
09-7080
09-7200P
09-7200W
09-BC
F-40-4700
80-0208s
91-0004
E-LG-09
VBT300
Part Description
Stainless Link Balls
Ball Links 2.5Mm
Thumb Screw (Blue)
Thumb Screw (Gold)
Tail Boom Brace Connectors W,
Bolts
Skid End Caps
Skid dampener
Canopy Rubber Grommets
Skids With Caps
Struts
Canopy Insert
Boom Support W Terminal
Spacer Frame
Bottom Board
Canopy Board
Tail Link Rod
7Hv Tail Link Support
7Hv Swashplate Guide
Upper Servo Mount
Strute Mount
7Hv Tail Boom
7Hv Tail Link Cap
7Hv Painted Canopy
7Hv White Canopy
Blade Caddie(7Hv)
Main Blade 700mm
Cap Head Bolts 2X8
Cap Head Bolts M3X5
Cap Head Bolts M3X8
Cap Head Bolts M3X16
Cap Head Bolts M3X20
Cap Head Bolts M3X25
Cap Head Bolts M2.5X8
Cap Head Bolts M2.5X10
Set Screw 3x5
Washers 3.2X5.2X0.4
Heat Shrink Plastic
Hex Nuts 2mm
Nylon Lock Nuts M4
7Hv Linkage Set
Velcro Tape 300Mm X 20Mm
Qty,
10 pcs/bag
10 pcs/bag
4pcs/bag
4pcs/bag
4 pcs/bag
1pcs/bag
1pcs/bag
1pcs/bag
1pcs/bag
2pcs/bag
1pcs/bag
1pcs/bag
1pcs/bag
1 set/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
10 pcs/bag
4pcs/bag
10 pcs/bag
10 pcs/bag
1 set/bag
4 pcs/bag
4 pcs/bag
4 pcs/bag
10 pcs/bag
2pcs/bag
2pcs/bag
1 set/bag
2set/bag
1pcs/bag
1pcs/bag
1pcs/bag
1set/bag
1pcs/bag
COMPASS MODEL (HK) LIMITED www.compassmodel.com
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