Compass 7hv Instruction Manual

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Academy of Model Aeronautics

5151 East Memorial Drive

Muncie, IN47302

Introduction

Warning

Warranty

AMA Information

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.

We strongly encourage all prospective and current R/C aircraft pilots to join the Academy of ModelAeronautics. 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:

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.

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.

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.

Atom 7HV Max. rotor head rpm: 2100 U/min Atom 7HV Max. collective pitch range: +/- 12°

Attention:

Atom 7HV LimitationsAttention :

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.

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• 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.

Length: up to 710mm

Necessary Items

Bearing Retainer

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

Standard Servos

Grease

Needle Nose Pliers

Phillips Screw Driver

Hex Wrench Set

(1.5mm,2mm,2.5mm,3mm, 5mm)

Cutter Knife

Main Rotor

Pitch Gauge

Ball Link Sizing Tool Ball Link

Plier

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.

Pre-assembly Information

In order to operate this model, you need to purchase the following items not kit-included.

Swash Plate Tool

Guidelines for Safe R/C Helicopter Flight

Threadlock

BEC

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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.

Use AB Glue

Use Blue Threadlock

Use Grease

Mishandling due to failure to follow these instructions may result in damage, personal injury or danger.

Symbols & Assembling

* 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!

Use Bearing Retainer

Step 1 Step 2

Step 3 Tail Set Step 4

Motor Set

Rotor Set

Frame Set

Swash Set

Linkages

Blades

Canopy

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Servo

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.

Swashplate Servo Installation

Pos Description Qty

1 M2.5x10 Socket Head Bolt 12

1 M2.5x12 Socket Head Bolt 12

2 M2x8 Socket Head Bolt 4

3 Stainless Ball 4

4M2Nut 4

5ServoBolt 4

6 Servo Spacer 2

7 M2.5x20 Socket Head Bolt 4

8ServoNut 2

9 2.5mm Washer 12

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.

Use medium threadlock on all

screws going into metal parts

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Use AB Glue

Landing Gear

Tip: Do not over tighten the four 3 x 5mm

set screws as it can damage the landing struts.

Pos Descripti on Qty

1 M3x20 Socket Head Bolt 8

2 3mm Washer 8 3 3x5mm Set Screw 4 4SkidCaps 4

Tail Servo Installation

Tip: Do not over tighten the four servo

screws as it may damage the plastic parts.

Use medium threadlock on all

screws going into metal parts

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Boom & Tail Rotor

Take special care to get the boom long enough into the tail assembly for correct tail length before you tight this bolt.

Pos Description Qty

1 M3x75 Socket Head Bolt 4

2 3mm Washer 11

3M3NylonNut 8

4 M3X16 Socket Head Bolt 2

5 M3X25 Socket Head Bolt 3

6 M3X10 Socket Head Bolt 3

7 Boom Support Collar 2

8 M2.5X6 Socket Head Bolt 2

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.

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!

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.

Use medium Threadlock on all

screws going into metal parts

Tip: You can use a very small drop of thin

CA glue to secure the pin in the tail pulley.

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Twist the tail belt 90° to the right before inserting it between the idler pulleys.

Do not crimp the tail belt and be sure that it is not turned in the wrong direction or more

Slide the Tail Boom through the tail boom mount and between the idler pulleys

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 instal l the screw, struts and nut

temporary without tightening them to much.

Boom & Tail Rotor

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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.

Use medium threadlock on all

screws going into metal parts

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

Heat Shrink Plastic

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Main Gear

Pos Description Qty

1 Main Shaft Clamp 1

2 M2.5x 10 Socket Head Bolt 1

3MainShaft 1

4 M3X30 Sock et Head Bolt 1

5M3NylonNut 1

6 M4x10 Sock et Head Bolt 2

11mm

8.5mm

rim

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.

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 th e 3mm sl ots for motor s with M 3 screws. Only 2 screws are necessary in this case.

4mm slot

3mm slot

Use medium threadlock on all

screws going into metal parts

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.

Do not over tighten the screw in the main shaft clamp, but fix it securely.

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.

2 extra M4x10 Bo lts ar e equipped here in case for optional motors.

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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.

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.

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 200Amps and mechanical stress to the connections, good soldering points are very important to guarantee a safe function of your power system.

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“.

Use medium threadlock on all

screws going into metal parts

Motor And Drive Tips

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.

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Use blue threadlock on all

screws going into metal parts.

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.

swing range

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.

Tip: Check the rubber from time to time

for cracks and refractory material.

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.

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Rotor,Washout & Swashplate

Pos Descripti on Qty

1 M4x25 Socket Head Bolt 1

2 M4x30 Socket Head Bolt 2 3 Preassembled Rotor Head 1 4 3mm Washer 4

5 4x8x3 Flanged Bearing 4 6M4NylonNut 1 7 M3x14 Socket Head Bolt 2

8 Swashplate Guide 1 9 M2.5x10 Socket Head Bolt 2

Main Grip

Apply Grease Here

Larger ID

(IN)

Smaller ID

(OUT)

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.

Use medium threadlock on all

screws going into metal parts

Mount the mainrotorhead using the upper hole

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!

Use some light oil on the main shaft for a smooth travelling swashplate and clean it regularly.

Be careful not to overtighten the two clamping screws (7) in the main rotor hub.

Do not overtighten the two M4x30 socket head bolts (2) as it may result in sluggish bearings in the A-arm

Install the linkage for the elevator servo at the swashplate before you mount the swashplate guide.

The Jesusbolt (6) just carries the torque. Tighten it firm but do not use to much force.

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Suggested Equipment Position

Ch6

Esc

Pitch

Receiver

12S Battery

Aileron

Elevator

Rudder

Brushless Motor

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

To M o t o r

BEC

FBL

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.

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Do not apply plier to resize Ball Links. Pliers could

cause hidden damage to Ball Links and result in failure when operation.

Linkage Length & Setup

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.

7 .

5 m

5 0 .

5 m

Linkage Lengths: Servo Horn to Servo center: about 17.5mm Servo to Swash: about 57mm inner edge to inner edge Swash toA connector: 58mm inner edge to inner edge as per picture.

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.

All ball links must be clipped on the balls with the Compass writing facing to the outside.

The length of the plastic drive tube can be changed easily by turning the ball link in and out.

Check all ball links for clearance and damages everytime you go flying and change worn ball links early.

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.

5 4 .

2 5 m

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Tail Setup

Clockwise Position

Counter Clockwise Position

At zero position, the servo arm should be at 90°. Use the b est fi tting servo arm and read the manual of your FBLUnit how to adjust the servo midposition.

90°

1 7

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.

Set the limit of the tail servo toA 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.

With the tail pitch slider in this position, the helicopter will turn counter clockwise.

The table blow gives the value of B for

different blades and rotor head rpm.

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!

Headspeed 1400-1800 Headspeed 1800-2100

Travel A Trav el B Travel A Travel B Stock Plastic 2mm 17mm 2mm 16.5mm KB DD 104m m 2mm 17mm 2mm 16. 5m m

Compass 115mm 3.5mm 16mm 4mm 16mm Mo st CF 10 5mm 3 mm 17mm 3mm 16. 5m m

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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.

Wiring Tips

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.

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.

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 be st way to protect you r 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.

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.

Keep all wires away from rotating parts, linkages and servo arms.

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.

Do not fold any wire, place them in curves.

Tip: Use a plier to bend zip ties before you use

them. It wil be easier to get them around a corner.

Do not pull out connectors by pulling at the wires!

Control all wires and connections regularly to discover hidden damages and defective

contacts early. Never go flying if any failure occurs!

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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.

FBL Setup Tips

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!

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.

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.

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FBL Setup Tips 2

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.

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.

Look at the helicopter from the side to test

the gyro direction.elevator

Watch the helicopter from the front/canopy

to test the gyro direction.aileron

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Aileron Check

Mode 1

Mode 2

Swashplate Reaction

Tilt Left

Elevator Check

Tilt

Forward

Tilt Right

Tilt

Backward

Rudder Check

Tail Pitch Plate

Pitch Check

Swash Plate

Ascent

Descent

Slide left

Slide Right

The picuture below shows how the swashplate has to move in mode 1 or mode 2.

Control Check

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Use AB Glue

ABA

Canopy

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. UseAB glue to fix the insert and screw it from the outside into the canopy.

Pos Descripti on Qty

1 M2.5x8 Self Tapping Bolt 2

2 Canopy Insert 1 3 M3x8 Socket Head Bolt 2 4 Thumb Screw 2

5 Canopy Rubber Grommets 2

ABA

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.

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!

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Rotor Direction & Blades

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.

Blade Tracking

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.

Do not fix the helicopter to the

ground or any object.

Keep some distance to the model and do not test this indoors!

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!

Read the following pages before

you go to test thi s!

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COMPASS MODEL (HK) LIMITED

www.compassmodel.com

Page 25

Parts List

7 HV

Version 3.0/2012

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

Page 26

09-0109

05-0119

05-0117

63-8165

82-821003

05-0102S

80-0325

09-7068S

80-0304

80-0312

82-4264

09-7069S

09-7101

09-7025S

61-4083

91-0004

80-0312

80-5285

79-0512

82-5131

60-8165

91-0005

02-0709S

80-0421

09-7067S

80-0430

81-0328

09-7067S

09-7069S

09-7025S

09-7068S

05-0102S

82-4264

Page 27

Part No. Part Description Qty,

02-0709S Ball Links

10 pcs/bag 05-0102S Metal Main Grips 7Hv 1 pcs/bag 05-0117 Spindle

2 pcs/bag

05-0119 Spindle Washer (90)

2 pcs/bag 09-0109 7Hv Dampner 2 pcs/bag 09-7025S 7Hv Fbl Drive Tube 1 pcs/bag 09-7067S 7Hv Center Hub 1 pcs/bag 09-7068S 7Hv Main Grip Arm 1 pcs/bag 09-7069S 7Hv Fbl Arm Connector 1 pcs/bag 09-7101 7Hv Fbl Connector Collar 2 pcs/bag 60-8165 Ball Bearings 8X16X5

2 pcs/bag 61-4083 Flanged Bearings 4X8X3

4 pcs/bag 63-8165 Thrust Bearings 8X16X5

2 pcs/bag 79-0512 Button Head Bolts M5X12

10 pcs/bag 80-0304 Cap Head Bolts 3X4 2 pcs/bag 80-0312 Cap Head Bolts M3X12

10 pcs/bag 80-0325 Cap Head Bolts M3X25

10 pcs/bag 80-0421 Cap Head Bolts M4X21

2 pcs/bag

80-0430

Cap Head Bolts M4X30

10 pcs/bag 80-5285 Shanked Bolts M5X28.5

2 pcs/bag

81-0328 Set Screws M3X28

10pcs/bag

82-4264 Washers 4.2X6X0.4

10 pcs/bag 82-5131 Washers 5.1X13X0.1

10 pcs/bag 82-821003 Washers 8.2X10X0.3

10 pcs/bag 91-0004 Nylon Lock Nuts M4

10 pcs/bag 91-0005 Nylon Lock Nuts M5

2 pcs/bag

Page 28

80 0310-

09-7051

61-5134

09-7075

09-7007

80-2510

91-0003

09-7066S

80-0338

09-7050

02-0214

02-0213

05-0229S

06-0222

02-0225

02-1211

60-7113

06-0223

09-7048

09-7023

80-0310

82-3201

80-0310

06-0223

82-327408

98-2040B

80-0208

80-0314

81-0305

02-0264AB

60-3092

63-4094

91-0003

60-4094

80-0208S

02-0209

82-3402

02-0701

02-0205

91-0003

02-8205

09-8023

09-8051

84-0214

60-7113

09-7079

02-5264

90-0201

Page 29

Part No. Part Description Qty,

02-0205 Tail Blade Links W. Pin

2 pcs/bag 02-0209 Tail Rotor Hub 1 pcs/bag 02-0213 Tail Pitch Slider

1 pcs/bag 02-0214 Tail Shafts

2 pcs/bag 02-0225 Grooved Pin 2X10 4 pcs/bag 02-0264AB Tail Blade Holder Set 2 pcs/bag 02-0701 Stainless Link Balls 10 pcs/bag 02-1211 Tail Pitch Plate W, Bb 1 pcs/bag 05-0229S Tail Pitch Slider W，Bb 1 pcs/bag 06-0222 Guide Pin Bolts

2 pcs/bag 06-0223 Pin 2X24 4 pcs/bag 09-7007 Tail Fin

1 pcs/bag 09-7023 Tail Pitch Connector

1 pcs/bag 09-7048 Tail Pitch Arm

1pcs/bag

09-7050 Tail Gear Box Frames

1 set/bag

09-7051 Tail Gear Box

1 pcs/bag 09-7066S Tail Guide Wheel

1 set/bag

09-7075 Tail Pulley

1 set/bag

09-7079 7hv Tail Hinge

1pcs/bag

09-8023

7Hvtail Pitch Lever Set

1 set/bag

09-8051 7Hv Metal Gear Box

1 set/bag

02-8205 Tail Pitch Control unit

1 set/bag

02-5264 Tail rotor hub assembly (plastic)

1 set/bag

60-3092 Ball Bearings 3X9X2.5

4 pcs/bag 60-4094 Ball Bearings 4X9X4

5 pcs/bag 60-7113 Ball Bearings 7X11X3

2 pcs/bag 61-5134 Flanged Bearings 5X13X4

2 pcs/bag 63-4094 Thrust Bearings 4X9X4

2 pcs/bag 80-0206s Cap Head Bolts 2X6

10 pcs/bag

80-0208 Cap Head Bolts M2X8 10 pcs/bag 80-0208S

Cap Head Bolts 2X8 special made

for ball

10 pcs/bag

80-0310 Cap Head Bolts M3X10 10 pcs/bag 80-0314 Cap Head Bolts M3X14 10 pcs/bag 80-0338 Cap Head Bolts M3X38 10 pcs/bag 80-2510 Cap Head Bolts M2.5X10 10 pcs/bag 81-0305 Set Screws M3X5

10 pcs/bag

82-327408 Washers 3.2X7.4X0.8

10 pcs/bag

82-3402 Washers 3.3X5.2X0.3

10 pcs/bag

84-0214 Spring Pin 2X14

10 pcs/bag

90-0201 Nuts M2

10 pcs/bag

91-0003 Nylon Lock Nuts M3

10 pcs/bag

98-2040B 3M 8Mm Wide 2040 Belt

1 pcs/bag

Page 30

09-7058

80-0332

60-6155

09-7053

07-4313

80-0308

09-7059

09-7102

05-8401

09-7056

09-7103

05-0602Z

05-4602

60-15245

09-7026

80-0430

80-2508

09-7070

02-0701S

05-0606S

80-0310

91-0004

80-0225

02-0701

62-162216

60-17265

80-0308

81-0404

80-0410

(for optional motors)

07-4312(12T)

07-4314(14T)

81-0404

08-4928

60-8196

08-4926

60-8196

08-4927

C-4926

80-0512SS

Page 31

Part No. Part Description Qty,

02-0701 Stainless Link Balls

10 pcs/bag

02-0701S Solid Link Balls 10 pcs/bag

05-0602Z

Autorotation Hub W,One Way

Bearing

1pcs/bag

05-0606S Mast Lock Clamp

1 pcs/bag 05-4602 Main Gear 1pcs/bag 05-8401 7Hv Swash Plate 1set/bag 07-4312 Pinion Gear (12T) 1 set/bag 07-4313 Pinion Gear (13T) 1 set/bag 07-4314 Pinion Gear (14T) 1 set/bag 09-7026 7Hv Main Pulley

1pcs/bag 09-7053 7Hv Motor Mount Spacer 3pcs/bag 09-7056 Swash Plate Pin

1set/bag

09-7058 7Hv Motor Mount Top

1 pcs/bag

09-7059 7Hv Motor Mount Bottom

1 pcs/bag

09-7070 Main Pulley Hub

1 pcs/bag

09-7102 7Hv Main Shaft

2pcs/bag 09-7103 Autorotation Sleeve

1pcs/bag

08-4926

Motor Shaft for 4926 motor

1pcs/bag

08-4927 Motor shell for SZ4926

1pcs/bag 08-4928 Motor cover for SZ4926

1pcs/bag 60-15245 Ball Bearings 15X24X5

2 pcs/bag

60-17265 Ball Bearings 17x26x5

2 pcs/bag

60-6155

Ball Bearings 6X15X5

2 pcs/bag

60-8196

Ball Bearings 8x19x6

2 pcs/bag

62-162216

One way bearing 16x22x16

1 pcs/bag

80-0512SS

Stainless Cap Head bolt M5x12

2 pcs/bag

80-0225 Cap Head Bolts 2X25

1pcs/bag 80-0308 Cap Head Bolts M3X8

10 pcs/bag

80-0310 Cap Head Bolts M3X10

10 pcs/bag

80-0332 Cap Head Bolts M3X32

10 pcs/bag

80-0410 Cap Head Bolts M4x10

10 pcs/bag

80-0430 Cap Head Bolts M4X30

10 pcs/bag 80-2508 Cap Head Bolts M2.5X8 10 pcs/bag 81-0404 Set Screws M4X4 10 pcs/bag 91-0004 Nylon Lock Nuts M4 10 pcs/bag SZ4926 12S Motor for 7hv kv510 1 pcs/bag

Page 32

09 7024-

80-2520

09-7092

02-0918

80-0306

79-0310

79-0306

09-7062

09-7082

09-7081

79-0310

09-7001Ra

09-7011

09-7060

09-7005

09-7042Z

09-7001L

09-7004

a:78-0310

09-7045S

b:80-0308

c:80-2506

60-10195

09-7073

d:82-3201

80-0325

80-0310

80-0375

09-7061

09-7002a

09-7055

e:91-0003

09-7018

09-7044

09-7008S

78-0310

91-0003

09-7109

02-0820

80-0330

80-0322

09-7078S

79-0308

82-3504

61-3062

09-7009

82-3507

60-3095

09-7064

09-7062

09-7071A

09-7009

82-3507

61-3062

91-0003

79-0308

09-7078S

85-0001

Page 33

Part No. Part Description Qty,

02-0820 Skid End Caps

4 pcs/bag

02-0918 Servo Nuts

5 pcs/bag 09-7001La Upper Frame Left 1 pcs/bag 09-7001Ra Upper Frame Right 1 pcs/bag 09-7002a Lower Frame

1 pcs/bag 09-7004 Receiver Mount 1 pcs/bag 09-7005 7Hv Gyro Mount

1 pcs/bag 09-7008S Battery Tray 1 set/bag 09-7009 Guide Wheel Frame 2 pcs/bag 09-7011 Canopy Break-Off 2pcs/bag 09-7018 Battery Lock 1 set/bag 09-7024 Servo Spacer

2 pcs/bag 09-7042Z Bearing Block W, Bearing 1 set/bag 09-7044 Battery Tray Connector

1 pcs/bag 09-7045S Receiver Stand Off

2 pcs/bag 09-7055 Boom Support Collar

2 pcs/bag 09-7060 7Hv Boom Clamp

2 pcs/bag 09-7061 Battery Tray Stand Off

2 pcs/bag 09-7062 Belt Tension Collar

2 pcs/bag 09-7064 Guide Wheel Collar

4pcs/bag

09-7071A

7Hv Belt Guide Wheel(new)

2 set/bag

09-7073 Canopy Stand Off

2 pcs/bag 09-7078S Belt Tension Mount

1 set/bag

09-7081 Rubber Band Mount

1 pcs/bag 09-7082 Rubber Band Seat

1 pcs/bag 09-7092 Rubber Band

1 pcs/bag 09-7109 Canopy Spacer

1pcs/bag

60-10195 Ball Bearings 10X19X5

4 pcs/bag 60-3095 Ball Bearings 3X9X5 2 pcs/bag 61-3062 Flanged Bearings 3X6X2 4 set/bag 78-0310 Flat Head Bolts M3X10 10 pcs/bag 79-0306 Button Head Bolts M3X6 10 pcs/bag 79-0308 Button Head Bolts M3X8 10 pcs/bag 79-0310 Button Head Bolts M3X10 10 pcs/bag 80-0306 Cap Head Bolts M3X6

10 pcs/bag

80-0308 Cap Head Bolts M3X8

10 pcs/bag

80-0310 Cap Head Bolts M3X10

10 pcs/bag

80-0322 Cap Head Bolts M3X22

10 pcs/bag

80-0325 Cap Head Bolts M3X25

10 pcs/bag 80-0330 Cap Head Bolts M3X30 10 pcs/bag 80-0375 Cap Head Bolts M3X75 4 pcs/bag

80-2506 Ca

Head Bolts M2.5X6 10 pcs/ba

80-2520 Cap Head Bolts M2.5X20

10 pcs/bag 82-3201 Washers 3.2X10X1

10 pcs/bag 82-3504 Washers 3.2X5.2X0.4

10 pcs/bag 82-3507 Washers 3.2X5.2X0.7

10 pcs/bag 85-0001 Clamp pin

2pcs/bag

91-0003 Nylon Lock Nuts M3

10 pcs/bag

Page 34

80-2510

09-7022

09-7041

02-0701

09-7003

80-0308

82-3504

80-0308

90-0201

80-0208S

80-2510

80-0308

09-7006

09-7047

05-0814

05-0833

80-0320

09-7010

80-0316

82-3504

02-0820

81-0305

VBT300

09 BC-

02 0853-

02 0810SG(Gold)-

06 0851-

09-7200P

E-LG-09

02 0813-

80 2508-

02 0709-

09 7021-

91-0004

80-0325

09-7012

02-0709S

F-40-4700

02-0820

02 0810B(Blue)-

09 7072-

09-0820

85-0002

09-7080

02-0821C

(Painted)

09-7200W (Unpainted)

Page 35

Part No. Part Description Qty,

02-0701 Stainless Link Balls

10 pcs/bag 02-0709S Ball Links 2.5Mm 10 pcs/bag 02-0810B Thumb Screw (Blue)

4pcs/bag

02-0810SG Thumb Screw (Gold)

4pcs/bag

02-0813S

Tail Boom Brace Connectors W,

Bolts

4 pcs/bag

02-0820 Skid End Caps 4 pcs/bag 02-0821C

Skid dampener 4 pcs/bag 02-0853 Canopy Rubber Grommets 10 pcs/bag 05-0814s Skids With Caps 2pcs/bag 05-0833 Struts 2pcs/bag 06-0851 Canopy Insert

1 set/bag

09-0820S Boom Support W Terminal

2set/bag 09-7003 Spacer Frame 1pcs/bag 09-7006 Bottom Board

1pcs/bag

09-7010 Canopy Board

1pcs/bag

09-7012S Tail Link Rod

1set/bag 09-7021 7Hv Tail Link Support

1pcs/bag

09-7022 7Hv Swashplate Guide

1pcs/bag

09-7041 Upper Servo Mount

1pcs/bag

09-7047 Strute Mount

1pcs/bag

09-7072

7Hv Tail Boom

1pcs/bag

09-7080

7Hv Tail Link Cap

2pcs/bag

09-7200P 7Hv Painted Canopy

1pcs/bag

09-7200W 7Hv White Canopy

1pcs/bag

09-BC Blade Caddie（7Hv）

1pcs/bag

F-40-4700 Main Blade 700mm

1 set/bag

80-0208s Cap Head Bolts 2X8

10 pcs/bag 80-0305 Cap Head Bolts M3X5 10 pcs/bag 80-0308 Cap Head Bolts M3X8

10 pcs/bag 80-0316 Cap Head Bolts M3X16

10 pcs/bag 80-0320 Cap Head Bolts M3X20 10 pcs/bag 80-0325 Cap Head Bolts M3X25 10 pcs/bag 80-2508 Cap Head Bolts M2.5X8 10 pcs/bag 80-2510 Cap Head Bolts M2.5X10 10 pcs/bag 81-0305 Set Screw 3x5 10 pcs/bag 82-3504 Washers 3.2X5.2X0.4

10 pcs/bag 85-0002 Heat Shrink Plastic

4pcs/bag

90-0201 Hex Nuts 2mm

10 pcs/bag 91-0004 Nylon Lock Nuts M4

10 pcs/bag E-LG-09 7Hv Linkage Set

1 set/bag

VBT300 Velcro Tape 300Mm X 20Mm

4 pcs/bag

Page 36

COMPASS MODEL (HK) LIMITED

www.compassmodel.com