Durafly EXCALIBUR User manual

Please read this manual carefully
before operating this plane.
Instruction manual

CONTENTS
Specifications 1
Introduction 1
Contents Of Box 2
Required To Complete Model 2
Optional Parts 2
Assembly (PNF) 3-6
Setting Up Your Model 7-8
Additional Parts Included 9-10
Model Flying Precautions 11
Pre-flight Checks 11
Flying the Excalibur 12
Excalibur Tips 13
Spare Parts Listing 14
Trouble Shooting 15
Useful Links and Notes 16

Wing span:1600mm(63.5”)
Length:1010mm(40.2”)
Flying weight:1250g(44.2oz)
Controls:4 Channel (Ailerons,Elevator,Rudder (V-Tail),Throttle)
ESC: Aerostar 60amp Brushless ESC
Motor:3542 800kv Brushless outrunner
Prop: Aerostar Folding Carbon 13x7
Battery:1800-2200mAh, 4S lipo, 40-65C
Radio system: Minimum 4 channel Rx and Tx required
Servos: 4 x 9g high torque
_
_
_
_
_
_
_
_
_
_
Forged by Kings in a distant realm, the legendary Excalibur is here!
The Excalibur is the perfect marriage of modern design and materials, with rock solid engineering
and performance. The entire model features carefully positioned carbon and glass fibre
reinforcement through-out, super smooth EPO foam for the lowest drag possible, quick connect
PCB wing plugs, efficient ball links on all surfaces and a simple screw together assembly.
This, is all wrapped up in the sleekest looking warmliner to date. The Excalibur's forward swept wing
and V-tail design coupled with the mighty pre-install high torque power system, impresses on every
single level. And it is these lasting impressions from which legends are born.
Whether on the slope or at the field, rule the sky with the Durafly Excalibur.
1
INTRODUCTION:
SPECIFICATIONS:

1. Main wing panels
2. Fuselage
3. V-tail stabilizer
REQUIRED TO COMPLETE MODEL:
OrangeRx T-SIX 2.4GHz 6CH
Programmable Tx:
Part No. 9403000001 Mode 1
9403000002 Mode 2
OrangeRX R620X
6Ch 2.4Ghz:
Part No. 9171000757-0
Turnigy Graphene 1800mah
65C 4S Lipo:
Part No. 9067000133-0
A-SPEC G2 2200mah
65C 4S Lipo:
Part No. 9472000004-0
1
2
3
4
7
5
6
In its ‘Plug n Fly’ format the Excalibur will still require some additional electronic components to get
it ‘flight ready’. Durafly recommends the products below for optimum performance and great value.
Available at hobbyking.com. If you are viewing this manual online, click
7. Upper tail plate
8. Slope nose cone
9. Wing spars
4. Control & mounting accessories
5. Prop and spinner assembly
6. Fuselage patch kit plates
8
10. Canopy/hatch
9
10
OPTIONAL PARTS:
To further extend the Excalibur's performance and versatility, the below optional parts are available
directly from Hobbyking.com The ‘Pro prop’ upgrade is for those more experienced pilots that are
looking to squeeze the maximum performance out of the stock set-up and can be purchased
directly from the site. The ‘FPV canopy hatch’ is a free to download 3D file of the canopy from the
files tab of the listing for those that with to 3D print their own canopy and FPV the Excalibur.
2
CONTENT:

B.
2.3x6mm
1. Out of the box your Excalibur comes with reinforced foam hinges. However before assembly can
begin, each hinge line must be flexed back and forth 5-6 times to reduce tension and load on the
servo. Do this for all control surfaces before continuing.
Test and center each tail servo then carefully install each tail half into the the housing at the
rear of the fuselage. Connect the servos to the extension leads and ensure they are pushed
forward into the fuselage when fitting the tail, for the perfect fit as shown (A). With the tail now
correctly in place, add the top tail mounting plate and secure using the supplied 2.3x6mm screws
(B). Turn the tail over and repeat this process (C). Finally locate and install the tail servo horns and
control rods (D).
Note:
- For max strength and security, UHU glue can be used in addition to supplied screws when installing the tail.
- When connecting ball links, the side with the ring molded on, is the side pressed onto the ball.
- Use of heat shrink or sticky tape is recommended to keep the extension/servo lead connection secure.
A.
FPV canopy 3D file for printing. Download for free
here.
‘Pro’ proppeller. 13 x 8 Full carbon folder
SKU: 445000071-0
3
2.

B.
A.
2.3x6mm
C.
Center the aileron servo’s and connect the ball link to the ball end on each control horn using the
push clip to secure the rod to the servo horn as show (A,B). Screw or unscrew the ball link as
required to get the aileron level with the wing trailing edge with the servo center.
A.
4
B.
3.
Push the supplied carbon wing joining spars into the slots of the fuselage (A), longer at the front,
shorter at the rear, ensuring neither catch on any wires when passing through the fuselage. Once
inserted, ensure both are centered as show (B).
4.
D.

5
3x20mm
A.
2.3x6mm
2.3x6mm
B.
B.
Note:
- For increased performance, we suggest the optional 13x8 ‘Pro’ propeller blades. See page 2/3
-The propellers should be balanced out of the box, however it is recommended a final balance check be carried
out before attaching to the model. A well balanced prop will greatly increase all round performance and
efficiency of the model in flight.
Maintaining their aligned position, slide one wing panel onto the spars and into place on the
fuselage. Handle with care, as you may need a good firm push to get the wing fully into position.
Repeat with the remaining panel (A). With both panels firmly in place, secure with four of the
2.3x6mm screws as shown (B).
5.
Bolt each prop blade to the hub using the supplied 3x20mm bolts and lock nuts. Do not over
tighten these bolts, the blade should be able to freely fold back (A). Now secure the prop and hub
onto the prop adapter and tighten the entire assembly onto the motor shaft and finish off by
screwing the spinner in place with the final 2.3x6mm screws (B).
6.
The final stage of assembly is to install your choice of 4-6ch receiver, the smaller the better. With
all servo leads connected, the receiver can be inserted under the wing leading edge and secured
with if desired. Your 1800-2200mah 4S lipo (2200mah 4S ASPEC G2 shown) installs as seen below.
This is also the desired location for correct CG.
7.
A.

6
Congratulations, basic assembly of your Excalibur is now complete.
Please perform a final check on all screws, bolts and
components, ensuring all are secure
and firmly in place.

7
SETTING UP YOUR MODEL:

20-25mm from center leading edge.
Elevator
6-10mm
6-10mm
6-12mm
6-12mm
20-25mm~
10-15mm
10-15mm
Rudder
Aileron
*Elevator ‘low rates’ 6mm ‘high rates’ 10mm in either direction from neutral.
*Rudder ‘low rates’ 6mm ‘high rates’ 12mm in either direction from neutral.
*Aileron ‘low rates’ 10mm ‘high rates’ 15mm in either direction from neutral.
2. The Excalibur handles exceptionally in flight and that’s not down to good design alone, but a good
pre-flight set-up too. Before you fly your Excalibur please follow the recommended settings below
for optimum handling and performance.
The recommended center of gravity (CG) for the Excalibur is approximately 20-25mm from the
leading wing when measured along the plastic of the wing fairing. Your Excalibur should balance
within the range using anything from a 1800mah - 2200mah 40-65C 4S lipo installed directly under
the canopy hatch.
3.
8
Control throws:

ADDITIONAL PARTS INCLUDED:
Your Excalibur comes with several additional plastic parts included in the box, ‘Slope nose cone’
and fuselage ‘Crash kit’. Both are detailed below:
9
A.
In the event of a hard crash or ground loop etc, you may find the ‘fuselage patch kit’ parts helpful
if you find any evidence of a split or crack in the foam around the frontal fuselage area. These are
designed to act as a temporary fix however. Its always best to replace the fuselage entirely, though
these should see you through while you wait for the new fuselage to arrive. Using contact type glue
(UHU recommended) and following the shape of the fuselage, glue the side panels in place as
shown below (A) and leave until the glue has fully cured.
1.
If you are fortunate enough to have access to a good moderate to strong wind slope site, you will
definitely want to slope the Excalibur. In fact after you slope the Excalibur, you may never want to
fly it with power again! To help streamline the Excalibur and turn it into a sloping dream machine
we’ve included a slope nose cone. Simply remove the prop and spinner and position the nose cone
over the front of the fuselage and secure in place with some clear tape (A). You can even use your
regular powered flight lipo.
2.

A.
10
Excalibur

mODEL fLYING PRECAUTIONS:
PRE-FLIGHT CHECKS
1. Always range check your model before any flight (especially when flying a new model for the first
time). Follow your radio manufacturers guidelines for performing this check.
2. Check all screw/bolts and mounting points are firmly secured, including control horns and
clevises.
3. Only fly with fully charged batteries (both in your radio and model). Failure to do so could result
in loss of control, damage to the model and/or persons/property around you. Check your
batteries are fully charged.
4. With the model powered up (Transmitter on first, then receiver/model) check that all surface are
free from damage/obstructions, moving in the correct directions and freely with stick input.
5. Inspect the model and prop for any damage that may have occurred during transit and listen for
any unusual sounds from the electronics when powered up. If in doubt, do not fly.
6. With the model held securely and the prop free of obstructions, increase the throttle just slightly
to confirm the rotations of the prop is correct. The model should want to pull straight forward with
throttle.
7. If this is your first flight with the model double check the C/G is at the correct position. If not adjust
battery position inside model accordingly.
8. If you are an inexperienced model pilot seek the help and assistance of an experienced pilot to
perform these final checks and to test fly the model for you.
● Select your flight area carefully. Always choose an open space that is unobstructed from trees
and buildings and away from crowed areas. Avoid flying in area’s with roads, electric/telephone
poles/wires and water near by or within close proximity to full size air traffic.
● Do not fly this model in poor weather. High winds, low visibility, inclement temperatures, rain and
storms are to be avoided.
● Never attempt to catch this model whilst in flight. Even a slow moving model can cause harm to
yourself and/other and risks damage to the model.
● This model is recommended for children no younger than 14 year old. All children, no matter what
age, should always be supervised by a capable and responsible adult when operating this model.
● Always unplug your model battery when not in use. Never leave the battery installed in the model.
● Remember to keep clear of the propeller at all times when your flight battery is connected.
● Before flying, always turn on your transmitter first then plug your flight battery into the model.
● After flying, always unplug your flight battery first then turn off your radio transmitter.
● Exercise caution when charging your batteries and follow in full your battery manufactures safety
guideline when doing so.
11

fLYING the excalibur:
12
* For optimum flight performance/model longevity, it is highly recommend that you always fly
with a balanced prop. The supplied prop should be balanced, but it’s always good to check first.
* Keep all leads within the fuselage area as tidy as possible. Tidy wires look better, allow for
easier access to all internal components, better battery installation, increased airflow around
electronics and a reduction in potential electronic signal interference (noise).
EXCALIBUR TIPS:
The Durafly Excalibur is both an easy and impressive aircraft to fly and has no special considerations
when it comes to flying but do make sure you’ve followed the set-up guidelines and recommendations
in this manual thoroughly for the best flying experience.
As powered gliders go, the Excalibur is in fact an extremely versatile air frame. Out of the box you will
already have an abundance of climb, maneuverability, power and grace on the supplied 13x7. However
, upgrade to the optional 'Pro' 13x8 prop, and see Excalibur really push the boundaries between warm
and hot liner! An 1800-2200mah 4S will give flight times from 4 minutes of continual powered flight or
up to 15mins with mixed throttle flying. And mixed throttle flying is really where its at with the Excalibur.
Full power climbs will get you to the cloud base in seconds, and a quick flick of the sticks has you
coming back down again in either a power or none powered dive, either way it will be blisteringly fast
and rock solid all the way. Or, remove the prop completely and you've got yourself ready to run high
energy slope machine with the included optional slope nose cone, the set-up is exactly the same.
When it does come to time to land, the Excalibur does as all good gliders should and that's glide. So to
bleed speed and reduce height when landing, fly an 'S' type approach or mix flapperons into your
model. The Excalibur will remain responsive throughout the speed range and all the way down to the
ground.

Thank you again for purchasing the Durafly Excalibur,
we know you’ll enjoy it immensely.
Don’t forget, spare parts are available for this model,
please see opposite for details.
13
* Do not leave your model in direct sunlight for prolonged periods of time. This will have an
adverse effect on the foam surface of the model.
* Set ‘Break On’ on the ESC if it is not done so already out of the box. The prop will not fold if the
brake is not set to ‘On’. To set the brake ‘on’ use the Durafly or Aerostar programming card (see
spare parts listing) or follow the below instructions:

9499000129-0
14
SPARE PARTS LISTING
Tail
9499000127-0
Fuselage
Part No:
9499000128-0
Main Wing Set
Part No: Part No:
9499000131-0
Spinner
Part No:
9499000130-0
Canopy/hatch
Part No:
9499000132-0
Slope Nose Cone
Part No:
9499000133-0
Cowl
Part No:
9499000134-0
Top Tail Plate
Part No:
9499000135-0
Stock Prop
Part No:
9499000139-0
Decals
Part No:
9499000136-0
Motor
Part No:
9499000137-0
Prop Adaopter
Part No:
9499000138-0
Control Rods/Screws
Part No:
9164000024-0
Durafly ESC card
Part No:
9164000041-0
Aerostar ESC card
Part No:

1. The battery is not fully charged.
2. Elevator servo is reversed.
3. CG too far backwards.
1. Charge the battery.
2. Change servo direction via Tx.
3. Move battery forwards.
1. Transmitter/Receiver batteries
are flat.
Problem Cause Solution
Motor does
not turn
1. Battery is not fully charged.
2. Transmitter battery low.
3. Motors not connected.
4. The motor is damaged.
5. Receiver is not bound to Tx.
6. ESC in set-up mode.
Control surfaces
not moving with
stick input
Model does not
fly straight
Model does not
climb well
Limited Radio
Range 1. charge/replace batteries.
Model moves
backwards 1. Prop installed backwards 1. Swap the props around.
1. Charge the batteries.
2. Install a full charged battery.
3. Check for connection
between the ESC and motor.
4. Replace motor.
5. Consult Radio manual and
go through bind procedure
again.
6. Hold model and move
throttle to full position then
back down to idle.
1. The servo lead is connected
to Rx incorrectly.
2. The servo is damaged.
1. Make sure the servo leads
are connect properly.
2. Replace servo.
1. Control surfaces not centered.
2.
CoG is not in the correct position.
1. Adjust the trims on the
transmitter.
2. Re-position lipo as
suggested.
15
TROuBLE SHOOTING:

16
USEFUL LINKS:
http://www.durafly.com
http://www.facebook.com/durafly
http://www.hobbyking.com
https://youtu.be/PIn6xsyRl8w
https://youtu.be/XWYDmCxQLgA
[email protected]
See the product video of Excalibur in action:
For a closer look at the Excalibur out of the box, watch the daily below:

durafly.com
facebook.com/durafly