Axc Hornet 250 User manual

Hornet 250 Assembly Manual V1.0

Hornet 250

FPV Racing Frame

Assembly Manual

Page 1

Hornet 250 Assembly Manual V1.0

Notes

READ THESE INTRUCTIONS IN FULL BEFORE PROCEDING. MAKE SURE THIS KIT IS ASSEMBLED

CORRECTLY BEFORE FLIGHT. IF IN DOUBT CONTACT AEROXCRAFT FOR ASSISTANCE.

REMOVE ALL PROPELLORS BEFORE DOING ANY SETUP PROCEDURES.

This document is a work in progress. Information contained within this document may be incorrect

and we cannot be held responsible for any damage/injuries caused by following the information

contained within this document.

If you are unsure what you are doing get advice from someone who does.

Multirotor helicopters are dangerous. Operate them away from people and property. Be

responsible. If in doubt do not fly.

It is the owner’s responsibility to ensure this model is assembled and fitted out correctly and safely.

Ensure that your model is capable of safely and reliably lifting the payload you are asking it to. This

model is dangerous if used in an incorrect manner. Ensure you seek assistance from an experienced

flyer if you are unsure. Do not fly near people, property or highways. Do not fly over people,

property or highways.

There may be laws and regulations governing the use of this model in your area, seek advice from

your authorities if you are unsure.

Planning your build and installation is key to building a safe and reliable multi rotor. Make sure all

wiring is of the correct gauge, properly connected, neat and protected from wear/tear and

radio/electrical interference. Make sure all the components you use are suitable for the size and

weight of your multi rotor.

Do not over tighten screws.

Check this product for damaged hardware, loose joints, missing parts or sharp edges before and

after assembly and frequently during use. Do not use unless all components are correctly fitted and

adjusted. Do not use if any parts are missing, damaged or broken.

Assembly is required. Take care when unpacking and assembling; contains small parts and sharp

edges.

Carbon fibre is electrically conductive, it is important that all the electrical connectors which are

contained within the carbon fibre body tube are properly shielded with heat shrink. This is to

prevent electrical shorting. If you are assembling the ESC yourself ensure it is soldered and

assembled properly according to the instructions in this manual before using it.

If you have any queries or questions about this product please contact us.

Email: [email protected]

Phone: +44 1282 412695

Page 2

Hornet 250 Assembly Manual V1.0

Contents

Notes.......................................................................................................................................................2

Contact Us...............................................................................................................................................2

Contents..................................................................................................................................................3

Package contents ....................................................................................................................................4

Bulkhead Identification........................................................................................................................... 5

Additional Items Required ...................................................................................................................... 6

Items required for flight...................................................................................................................... 6

Items required for FPV Operation.......................................................................................................6

Tools required.....................................................................................................................................6

ESC Module Assembly............................................................................................................................. 7

Step 1: Preparing the ESCs..................................................................................................................7

Step 2: Assembling the ESC Cluster .................................................................................................... 8

Frame Assembly....................................................................................................................................13

Step 1: Carbon Main Tube ................................................................................................................13

Step 2: Front Subframe Assembly..................................................................................................... 14

Step 3: Rear Subframe Assembly...................................................................................................... 17

Step 4: Attaching the Subframes ......................................................................................................18

Step 5: Motor Preparation................................................................................................................21

Step 6: Motor Arms........................................................................................................................... 22

Step 7: ESC Cluster Installation .........................................................................................................24

Step 8: Front Module and Camera....................................................................................................28

Step 9: Tail Cone ...............................................................................................................................31

Step 10: Nose Cone...........................................................................................................................32

Step 10: Battery Mounting................................................................................................................33

Step 11: Software Setup ...................................................................................................................34

Page 3

Hornet 250 Assembly Manual V1.0

Package contents

Part No.

Item

QTY

H250-MAIN-TUBE

Carbon Fibre Main Tube

H250-ARM-0

Arm Assembly - 0 Degree Tilt

H250-ARM-15R

Arm Assembly - 15 Degree Tilt - Right Hand

H250-ARM-15L

Arm Assembly - 15 Degree Tilt - Left Hand

H250-NOSE

Nose Cone

H250-TAIL

Tail Cone

H250-BH-A

Bulkhead A - FPV Camera Mounting Plate

H250-BH-B

Bulkhead B - RX Mounting Plate

H250-BH-C

Bulkhead C - Flight Controller Mounting Plate

H250-BH-D

Bulkhead D

H250-BH-E-PCB

Bulkhead E - Power Distribution Board PCB

H250-CDS5

5mm Diameter Aluminium Spacer (Anodised Black)

H250-CDS6

6mm Diameter Aluminium Spacer (Anodised Black)

HS20-5-BR

M2x5 Hex Spacer (Silver)

HS20-12-BR

M2x12 Hex Spacer (Silver)

BT25-6-BLK

M2.5x6 Button Head Screw (Black)

BT25-8-BLK

M2.5x8 Button Head Screw (Black)

SK20-4-BLK

M2x4 Socket Head Screws (Black)

SK20-5-SS

M2x5 Socket Head Screws (Silver)

NN25-SS

M2.5 Nyloc Nut (Silver)

CT25-100

Cable Ties

H250ANT

Antennae Tubes

GRM20

20mm Grommet

GRM10

10mm Grommet

VEL10-650

Velcro 10mm X 650mm

* Package will contain either H250-ARM-0 or H250-ARM-15 depending on whether you bought 0 degree tilt

arms or 15 degree tilt arms.

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Hornet 250 Assembly Manual V1.0

Bulkhead Identification

Page 5

Hornet 250 Assembly Manual V1.0

Additional Items Required

Items required for flight

•4x 1806 size motors (e.g. Emax 1806 2280KV)

•1x Flight Controller (e.g. CC3D or Naze32 controller)

•4x 5 inch props

•4x EMAX 12A Esc

•Flight Battery

•Radio Receiver RX

Items required for FPV Operation

•1x FPV Camera

•1x FPV Transmitter (e.g. Fat shark)

•1x FPV Antennae (e.g. IBCrazy 2.4GHz BluBeam Ultra Mad Mushroom)

•SMA Extension Cable

•90 Degree SMA connector

Tools required

•1.5mm Hex Driver

•Hacksaw blade

•Screwdriver

•Pliers

•Small wire cutter

•Scissors

•5mm Spanner

•Heat shrink and Heat Gun

•Soldering Iron, De-solder pump and Solder

Page 6

Hornet 250 Assembly Manual V1.0

ESC Module Assembly

Step 1: Preparing the ESCs

Parts Needed: 4 x EMAX 12A SimonK ESC

Recommended Tools: Soldering Iron, solder, de-solder pump & helping hands clamp.

1. Cut away the heat shrink with a knife. Be careful not to cut or damage any wires or

components when doing this.

2. With a soldering iron carefully remove the 2 supply cables and capacitor.

NOTE: Make a note of which pin of the capacitor is neg(-) before removal.

3. Remove as much solder as possible from the 2 solder pads. This will make it easier to attach

them to the Power Distribution PCB.

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Hornet 250 Assembly Manual V1.0

Step 2: Assembling the ESC Cluster

Parts Needed: Bulkhead E PCB, 4 x EMAX 12A SimonK ESC (from previous step), Silicone Wire, power

connector.

Recommended Tools: Soldering Iron, solder, de-solder pump & helping hands clamp.

1. Solder the copper via pins that connect both sides of the PCB. Make sure you apply plenty of

heat so the soldering is secure. The copper on the PCB is very thick so will need at least a 25watt

soldering iron.

2. Turn the PCB over and solder the via pins

3. Solder the main power cables (not supplied). These are the cables that you will connect your

battery to.

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Hornet 250 Assembly Manual V1.0

4. Solder the Auxiliary power cable (not supplied). This is used to power the FPV Cameras, FPV TX

etc. Note that this outlet is supplied directly from the flight battery. You need to check that the

voltages are suitable for your auxiliary components, if they are not you may need to use a

voltage stepdown regulator.

5. Insert the first ESC into its slot in the PCB board, it is orientated as pictured below. You may need

to enlarge the slots slightly with a thin file.

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Hornet 250 Assembly Manual V1.0

6. Solder the ESC to the PCB board. Make sure you get a good fillet of solder that is cleanly adhered

to the copper pads on the ESC and the Hornet PCB.

7. Repeat steps 6 & 7 with the other 3 ESCs.

8. Using some pliers carefully bend the pins of one of the capacitors like below. Note that the

capacitors will be marked to indicate the pos(+) and neg(-) connections. On the capacitors shown

here the neg(–) connector is marked by the gold stripe and green (–) symbols. You need to bend

the pins of the capacitors so that they match up with the solder pads on the PCB which are

marked, e.g. C1(-) being the pad for the neg(-) connection.

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Hornet 250 Assembly Manual V1.0

9. Solder the capacitor to the PCB.

10. Repeat steps 8 & 9 so each ESC has its own capacitor.

NOTE: Make sure that the capacitors are connected the correct way round, failure to do so will

cause damage when you connect power.

11. Cut the supplied heat shrink into 4 equal lengths and use it to cover the 4 ESC as shown below.

Page 11

Hornet 250 Assembly Manual V1.0

12. Shorten the length of the motor wires for ESC 3 and ESC 4 so they are approximately half the

length of the top two.

NOTE: You may want to leave this step until nearer the end of the build to get the exact

lengths.

13. Solder bullet connectors onto all the ESC motor wires. Add heat shrink as appropriate.

NOTE: Make sure that the connectors and wires cannot short out on each other or the carbon

fibre body.

14. Heatshrink the three motor wires of each ESC together into bundles and label as appropriate.

Page 12

Hornet 250 Assembly Manual V1.0

Frame Assembly

Step 1: Carbon Main Tube

1. Take the Carbon Fibre Main tube and using a small hacksaw blade carefully cut through the four

attachment points to remove the lid.

2. With a file remove the remaining small bumps.

3. Place the large 20mm grommets into the two holes on the body tube.

NOTE: You can have your battery connectors on the inside of the Main Tube or on the outside.

The grommets are to protect the cables against being damaged by the carbon fibre. If you are

going to have the connectors inside the Main Tube then you can leave off these grommets.

Page 13

Hornet 250 Assembly Manual V1.0

Step 2: Front Subframe Assembly

1. Parts Needed: Bulkhead C (flight controller mounting plate), 2x antennae tubes, 2x cable ties.

2. Take Bulkhead C and place an antennae tube between the two small cut-outs, ensure you have

the bulkhead plate orientated correctly as shown in the pictures. Pass a cable tie through and

tighten, ensure the end of the cable tie is on the same side as the antennae tube.

(NOTE: Depending on which ports you are using on the flight controller you may need to flip

the plate over and mount the controller on the other side. The standard orientation below is

suitable for most setups using the 8 Pin receiver port and the flexi port, if the main port is

required use the alternative orientation and mount the aerial tubes on the opposite side.)

3. Get the flight controller and its mounting hardware.

Page 14

Hornet 250 Assembly Manual V1.0

4. Fasten the standoffs to the flight controller.

5. Fasten the flight controller onto Bulkhead C. Ensure the USB port is facing upwards. If you are

using the 8 pin receiver port attach this now as it is difficult to access once inside the frame.

(NOTE: Depending on the size of your flight controller mounting hardware, the 4 holes in

Bulkhead C for mounting the flight controller may need enlarging with a drill.)

6. In order to attach the 8 pin connector you will need to cut off the small bit of protruding plastic

along the top edge of the connector in order for it to clear the aluminium spacer.

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Hornet 250 Assembly Manual V1.0

7. Parts Needed:2x 6mm dia spacers, 2x 5mm dia spacers and 4x M2.5 X 6mm screws.

9. Fasten the two 6mm spacers onto Bulkhead C with 2x M2.5 X 6mm screws. Do not fully tighten

the screws in case you need to rotate the spacers later in the assembly. The two screw holes

along the length of the spacers are slightly countersunk on one side, ensure this side is facing

outward.

10. Fasten the two 5mm spacers onto Bulkhead C with 2x 2.5 X 6mm screws

Page 16

Hornet 250 Assembly Manual V1.0

Step 3: Rear Subframe Assembly

1. Parts Needed: Bulkhead D, 2x 6mm spacers, 1x 5mm spacer and 3x 2.5 x 6mm screws.

2. Fasten the 2x 6mm Dia Spacers and the 5mm Dia Spacer to Bulkhead D.

Page 17

Hornet 250 Assembly Manual V1.0

Step 4: Attaching the Subframes

NOTE: Make sure that the threaded holes in the spacers are aligned correctly before attempting

to insert the screws. Damage to the screw threads in the spacers may occur if the screws are

misaligned.

1. Slide the Rear Subframe Assembly into the rear of the tube. The rear of the tube is the end with

the AXC logo. Secure the assembly with a single M2.5x6 screw on the top of the body tube.

2. Secure the remaining 5mm spacer into the rear of the body tube with 2x M2.5X6 Screws.

Page 18

Hornet 250 Assembly Manual V1.0

3. As you insert the Front Subframe Assembly into the Main Tube you will need to bend the

antennae tubes. Don’t worry about bending the antennae tubes they are quite flexible and will

bend back into place.

Page 19

Hornet 250 Assembly Manual V1.0

4. Secure the Front Subframe Assembly with 3x M2.5x6 Button Head Screws. One on the top of the

tube and two on the underside.

Page 20

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