Maxford USA Mentor-G V5 ARF User manual

RS010423
M
e n t o r
Multi-
functional Giant
I N S T R U C T I O N M A N U A L
Mentor-G is Maxford USA legendary
functional giant RC trainer
. The very early version
was released in 2010. Some of the
setup options
include:
 Basic trainer.
 Aerobatic trainer.
 Large-size float-
plane trainer
 Glider or banner tow-
plane
 Load-carrying platform for
camera(s) or for
dropping candy
flys, etc..
The Version 5 Mentor-G
is proudly made in the USA.
TABLE OF CONTENTS
I. Important safety precautions
…………………….
II.
Warranty, liability waiver, and return policy …… 2
III.
Specifications …………………………………… 3
IV.
Features of V3 …………………………………... 3
V.
Parts list …………………………………………. 3
I. IMPORTANT
SAFETY PRECAUTIONS T
1.
This product should not be considered a toy, but rather a sophisticated, working model that functions much like a
full-
scale airplane. Because of its performance capabilities, this product, if no
could cause injury to you or spectators and damage to property. Maxford USA provides you with a high
thoroughly tested model airplane kit with assembly instructions. However, the quality and capabilities of your
finished model airplane depend on how you build it, and your safety depends on how you use and fly it. Any
testing or flying of this model airplane is done entirely at your own risk.
2.
Assemble the model airplane according to these instructions. We recommen
model beyond the assembly options covered in these instructions, as doing so may result in an unsafe or
unworkable model. In a few cases the instructions may differ slightly from the photos; in those instances the
writ
ten instructions should be considered as correct. If you have any question or concern about these instructions,
before you proceed with assembly of this product, contact us at
national holidays, between 9 AM to
5 PM Pacific time.
3.
It is your responsibility to install the R/C system and other components in such a way that this model airplane
passes all applicable safety/range tests and that the power system and controls operate smoothly and correctly.
4.
Recheck the operation of this model airplane before every flight to ensure that all equipment is still operating
correctly and that the model has remained structurally sound. Also, before every flight check all clevises and
other connectors; do not
fly without replacing any that you find damaged or defective.
Mentor-G V5
e n t o r
- G V 5
A R F
functional Giant
R/C TRAINER
I N S T R U C T I O N M A N U A L
multi-
. The very early version
setup options
plane trainer
.
plane
.
video
dropping candy
at fun-
is proudly made in the USA.
…………………….
1 VI.
Assembly instructions ……………………….. 4
Warranty, liability waiver, and return policy …… 2
Specifications …………………………………… 3
VII.
Setup and adjustments ………………………..
Features of V3 …………………………………... 3
III.
Preparation for transport and field setup …
Parts list …………………………………………. 3
IX.
Preflight checks …………………………
SAFETY PRECAUTIONS T
O PROTEC
T YOUR MODEL, YOURSE
This product should not be considered a toy, but rather a sophisticated, working model that functions much like a
scale airplane. Because of its performance capabilities, this product, if no
t assembled and operated correctly,
could cause injury to you or spectators and damage to property. Maxford USA provides you with a high
thoroughly tested model airplane kit with assembly instructions. However, the quality and capabilities of your
finished model airplane depend on how you build it, and your safety depends on how you use and fly it. Any
testing or flying of this model airplane is done entirely at your own risk.
Assemble the model airplane according to these instructions. We recommen
d that you do not alter or modify the
model beyond the assembly options covered in these instructions, as doing so may result in an unsafe or
unworkable model. In a few cases the instructions may differ slightly from the photos; in those instances the
ten instructions should be considered as correct. If you have any question or concern about these instructions,
before you proceed with assembly of this product, contact us at
[phone]
, Monday through Friday, except
5 PM Pacific time.
It is your responsibility to install the R/C system and other components in such a way that this model airplane
passes all applicable safety/range tests and that the power system and controls operate smoothly and correctly.
Recheck the operation of this model airplane before every flight to ensure that all equipment is still operating
correctly and that the model has remained structurally sound. Also, before every flight check all clevises and
fly without replacing any that you find damaged or defective.
Page | 1
A R F
I N S T R U C T I O N M A N U A L
Assembly instructions ……………………….. 4
Setup and adjustments ………………………..
8
Preparation for transport and field setup …
..… 9
Preflight checks …………………………
..….. 9
T YOUR MODEL, YOURSE
LF & OTHERS
This product should not be considered a toy, but rather a sophisticated, working model that functions much like a
t assembled and operated correctly,
could cause injury to you or spectators and damage to property. Maxford USA provides you with a high
-quality,
thoroughly tested model airplane kit with assembly instructions. However, the quality and capabilities of your
finished model airplane depend on how you build it, and your safety depends on how you use and fly it. Any
d that you do not alter or modify the
model beyond the assembly options covered in these instructions, as doing so may result in an unsafe or
unworkable model. In a few cases the instructions may differ slightly from the photos; in those instances the
ten instructions should be considered as correct. If you have any question or concern about these instructions,
, Monday through Friday, except
It is your responsibility to install the R/C system and other components in such a way that this model airplane
passes all applicable safety/range tests and that the power system and controls operate smoothly and correctly.
Recheck the operation of this model airplane before every flight to ensure that all equipment is still operating
correctly and that the model has remained structurally sound. Also, before every flight check all clevises and

RS010423 Mentor-G V5 Page | 2
5. If you are not an experienced R/C pilot or have not flown this type of model before, we strongly recommend that
you get the assistance of an experienced R/C pilot.
6. Throughout the lifetime of this model, use only the Maxford USA-recommended or same-sized engine and a new
or well-maintained R/C radio system and batteries recommended by the maker of the engine and radio system.
7. While this kit has been flight-tested to meet or exceed our rigid performance and reliability standards in normal
use, if you plan to perform any extremely high-stress flying, such as racing or advanced aerobatics, or if you plan
to install a larger engine than specified, you (the buyer or user of this product) are solely responsible for taking
any and all necessary steps to reinforce the high-stress points and/or substitute hardware that is more suitable for
such increased stresses.
II. WARRANTY, LIABILITY WAIVER, AND RETURN POLICY
Maxford USA guarantees this kit to be free from defects in material and workmanship at the time of
purchase. All of our products have been inspected in our factory and are checked again when
shipped from our warehouse.
However, Maxford USA cannot directly control the materials you may use nor your final-assembly
process. Therefore, Maxford USA can NOT in any way guarantee the performance of your finished
model airplane. Furthermore, in purchasing this product, you (the buyer or user of this product)
exempt, waive, and relieve Maxford USA from all current or future liability for any personal injury,
property damage, or wrongful death, and if you (the buyer or user of this product) are involved in
any claim or suit, you will not sue Maxford USA or any of its representatives.
If you do not fully accept the above liability and waiver, you may request a return merchandise
authorization number (RMA#) as explained in item 2 below.
If you think there is a missing part or any shipping damage, please read our after-sales service and
return policy as outlined below.
1. Inspect your order upon delivery for any shipping damage or missing part. If you find a problem
you must contact us within 10 days from receipt of your purchase by calling [phone],
Monday through Friday, except holidays, between the hours of 9 AM and 5 PM Pacific time.
During this telephone conversation, and with your support, we will determine how to resolve
your concern.
2. To request an RMA#, call [phone], Monday through Friday, except holidays, between
the hours of 9 AM to 5 PM Pacific time. If we elect to issue you an RMA#, you must clearly
mark this RMA# on the outside of the package. (No return or exchange will be authorized after
10 days from the date of your receipt of the product; any package delivered to us without a
Maxford USA RMA# is subject to being returned to the sender, as received, with return postage
payable upon delivery.) Returned merchandise must be in its original condition as received from
Maxford USA, with no assembly or modification, in the original packing materials, complete
with all manuals and accessories. Return shipping and insurance charges must be prepaid by
you, the buyer.
3. Returned merchandise that is accepted by Maxford USA for credit is subject to a 10% to 20%
restocking fee (the final amount will be determined by Maxford USA upon receipt and
examination of the returned merchandise).
Return Address:
Maxford USA
13630 Imperial Hwy, Ste. 11, Santa Fe Springs, CA 90670
IMPORTANT: Print the RMA# issued by Maxford USA
on the package near the above address.

RS010423 Mentor-G V5 Page | 3
III. SPECIFICATIONS
Wingspan ................................................................................................................................ 83-inches
Wing Area ..................................................................................................................... 1,187 sq. inches
Length ..................................................................................................................................... 60 inches
ARF weight ........................................................................................................................... 6.6 pounds
Flying weight ..................................................................................................................... 11.6 pounds
Power system (Not included) ................................. 20~ 30CC Gas Engine or same size electric motor
Propeller (Not included) .......... 18x6 or 16x10 wood (or as-recommended for your power system)
Radio system (Not included) ......................... Minimum of 4 channels with 5 or 6 standard size servos
* (All dimensions and weights are approximate.)
IV. NEW/IMPROVED FEATURES OF V5
 Much more shielded surface of wing panel makes the wing much stronger.
 PU wheels and tail wheel to replace former foam tires.
 Mental control hors to replace former plastic horns.
 Metal axles on main landing gear to replace former bolts and nuts axles.
 100% Made in the USA.
 275 Kraft packing box, Made in the USA.
PREVIOUS OEM VERSION PRODUCT
MADE IN THE USA VERSION 5
SPECIAL FEATURES …
 The firewall and most of the fuselage is plywood; the wings and empennage are all wood.
 The ailerons are operated by separate servos for optional use as flaperons.
 The elevator may easily be setup for either one-servo or two-
servo operation.
 Mentor-G can be easily convert to a floatplane with 90-120 size
floats.
V. PARTS LIST
1. Items you must supply to complete the MENTOR-G
*

RS010423
 5-minute epoxy glues,
Cyanoacrylate
few common hand tools (such as long
 20~30CC gas engine (
or equivalent glow or electric power system
 18x6 or 16x10 propeller (or as-
recommended for
 Minimum of five(5) Hitec HS-
311
one(1) 12-inch Y-
connector, and a 4
2. Items included with your Mentor
 Precovered fuselage,
wing panels, vertical and horizontal stabilizers, rudder and elevator.
 Precut, pre-covered hatch.

Aileron, rudder and elevator pushrods and related linkages with precut hinge openings and all required
CA hinges.
 PU
Tail wheel with steerable wire strut asse
 Aluminum main landing gear
with
 Aluminum wing
rod, wing panel
and wing hold-down bolts.
 V5 does not come with fuel tank

All required control horns and as
i
tems normally supplied with servos, gas or glow engines, and electric
power systems).
 PDF Instruction Manual
, free to download from www.maxfordusa.com
VI. ASSEMBLY INSTRUCTIONS
1. Test fit the vertical stabilizer.
Use a soldering iron or wood
burning tool to r
emove Mylar covering from the vertical stabilizer
that will be ‘buried’ inside the vertical slot at the rear of the
fuselage. Use 5-
minute epoxy to secure the vertical stabilizer into
its slot at the top-
rear of the fuselage.
2. Slide the supplied tail wheel
onto the tail wheel strut. (You may
need to file or sand the end of the strut so the opening in the tail
wheel smoothly slides onto the strut.) Secure the tail wheel onto
its strut wi
th a provided wheel collar. Position and
second provided wheel collar at the top of the spring on the tail wheel strut.
3.
Slide the tail wheel strut fully through the hole in the end of the aluminum tail wheel
mounting bracket, and test fit this tail wheel assembly at the bottom
the tail wheel’s wire strut aligns at the centers of
and the fuselage. Measure 3/4-
inch from the top end of the tail wheel’s wire strut and bend
the strut back (toward the rear of the airplane) at a 90
bottom of the fuselage with two
provided
the bottom of the fuselage.)
4. Test fit the rudder
to the rear of the vertical stabilizer, and mark where a horizontal hole and a vertical notch
are needed in the rudder fo
r the tail wheel strut’s wire. Drill the required hole and cut the notch in the front
edge of the rudder to fit the tail wheel strut’s wire.
5.
With the rudder prepared for the tail wheel’s wire, apply some 5
strut’s
wire and insert the wire into the hole in the rudder. Before this epoxy thickens, insert two(2) supplied
Mentor-G V5
Cyanoacrylate
(CA) adhesives, masking tape, a high-
speed rotary tool and a
few common hand tools (such as long
-nosed and diagonal or side-
cutter pliers, etc.).
or equivalent glow or electric power system
).
recommended for
your engine) and optional spinner.
311
or equivalent standard-
sized servos, four(4) 12
connector, and a 4
-channel radio control system.
2. Items included with your Mentor
-G
wing panels, vertical and horizontal stabilizers, rudder and elevator.
Aileron, rudder and elevator pushrods and related linkages with precut hinge openings and all required
Tail wheel with steerable wire strut asse
mbly.
with
PU wheels, axles, and mounting hardware.
rod, wing panel
with preinstalled alignment pins, plywood wing hold
anymore.
All required control horns and as
sociated hardware (except those
tems normally supplied with servos, gas or glow engines, and electric
, free to download from www.maxfordusa.com
Use a soldering iron or wood
emove Mylar covering from the vertical stabilizer
that will be ‘buried’ inside the vertical slot at the rear of the
minute epoxy to secure the vertical stabilizer into
rear of the fuselage.
onto the tail wheel strut. (You may
need to file or sand the end of the strut so the opening in the tail
wheel smoothly slides onto the strut.) Secure the tail wheel onto
th a provided wheel collar. Position and
secure a
second provided wheel collar at the top of the spring on the tail wheel strut.
Slide the tail wheel strut fully through the hole in the end of the aluminum tail wheel
mounting bracket, and test fit this tail wheel assembly at the bottom
-
rear of the fuselage so
the tail wheel’s wire strut aligns at the centers of
the aft-ends of both
the vertical stabilizer
inch from the top end of the tail wheel’s wire strut and bend
the strut back (toward the rear of the airplane) at a 90
-
degree angle. Attach the tail wheel assembly to the
provided
wood screws. (Apply thin CA adhesive to reinforce these holes in
to the rear of the vertical stabilizer, and mark where a horizontal hole and a vertical notch
r the tail wheel strut’s wire. Drill the required hole and cut the notch in the front
edge of the rudder to fit the tail wheel strut’s wire.
With the rudder prepared for the tail wheel’s wire, apply some 5
-
minute epoxy to the end of the tail wheel
wire and insert the wire into the hole in the rudder. Before this epoxy thickens, insert two(2) supplied
Page | 4
speed rotary tool and a
cutter pliers, etc.).
your engine) and optional spinner.
sized servos, four(4) 12
-inch extensions,
wing panels, vertical and horizontal stabilizers, rudder and elevator.
Aileron, rudder and elevator pushrods and related linkages with precut hinge openings and all required
with preinstalled alignment pins, plywood wing hold
-down plate
Slide the tail wheel strut fully through the hole in the end of the aluminum tail wheel
rear of the fuselage so
the vertical stabilizer
inch from the top end of the tail wheel’s wire strut and bend
degree angle. Attach the tail wheel assembly to the
wood screws. (Apply thin CA adhesive to reinforce these holes in
to the rear of the vertical stabilizer, and mark where a horizontal hole and a vertical notch
r the tail wheel strut’s wire. Drill the required hole and cut the notch in the front
minute epoxy to the end of the tail wheel
wire and insert the wire into the hole in the rudder. Before this epoxy thickens, insert two(2) supplied

RS010423
CA hinges to secure the rudder to the vertical stabilizer and apply thin CA adhesive to the CA hinges; also
apply some masking tape to hold the tail wh
6. Using the provided 6 ea.
20-mm long steel bolts
and blind-nuts, attach
both halves of the
aluminum landing gear
struts to the bottom of
the fuselage.
7. Test fit the horizontal
stabilizer, then
use a soldering iron or wood burning tool to
‘buried’ inside its mounting-
slot at the rear of the fuselage.
8. Using 5-minute
epoxy, secure the
horizontal stab. into
its slot at the rear of
the fuselage; before
this epoxy thickens,
make sure that the
horizontal stabilizer
is aligned at right
angles to the fuselage by measuring the distance between the
bolts on the landing gear and the
outside end of each half of the horizontal
stabilizer –
and adjust the horizontal stabilizer so this distance is the same
on both sides of the fuselage.
9.
Insert the elevator’s CA hinges in their precut
slots and test fit the elevator to the horizontal
stabilizer. Mark where a small
notch
cut in the center-front of
the elevator
the tail wheel strut’s wire, and cut this
required notch.
Secure the elevator
to the horizontal Stabilizer
by applying thin CA adhesive to each of the
elevator’s CA hinges. NOTE: a)
For hi
aerobatic flying, the customer may strengthen the Mentor
(not included)
to surround and reinforce the empennage
wire through one end of the horizontal stabilizer, then through the top of the vertical stabilizer, through
the other end of the horizontal stabilizer, and back to the
landing gear from tail-
dragger to a tricycle configuration,
more-
aft position for the main landing gear on
servo tray for the nose-
wheel steering servo.)
10. Position the pushrod-
openings in the control horns directly over the hinge lines and
rudder and elevator for the control horn mounting bolts. Attach one control horn to the rudder and one
contr
ol horn to the elevator. (Note: If you setup the elevator to be driven by two servos, remove the
covering material from the precut servo opening in the top of the fuselage directly in front of the rudder,
and mount your rudder servo in this ‘extra’ servo
Mentor-G V5
CA hinges to secure the rudder to the vertical stabilizer and apply thin CA adhesive to the CA hinges; also
apply some masking tape to hold the tail wh
eel strut’s wire in position until the 5-
minute epoxy has cured.
use a soldering iron or wood burning tool to
remove the Mylar covering that will be
slot at the rear of the fuselage.
angles to the fuselage by measuring the distance between the
outside rear
outside end of each half of the horizontal
and adjust the horizontal stabilizer so this distance is the same
Insert the elevator’s CA hinges in their precut
slots and test fit the elevator to the horizontal
notch
must be
the elevator
to clear
the tail wheel strut’s wire, and cut this
to the horizontal Stabilizer
by applying thin CA adhesive to each of the
For hi
-stress
aerobatic flying, the customer may strengthen the Mentor
-
G’s tail section by adding stranded metal wire
to surround and reinforce the empennage
– b
egin at the bottom of the fuselage, pass the
wire through one end of the horizontal stabilizer, then through the top of the vertical stabilizer, through
the other end of the horizontal stabilizer, and back to the
bottom of the fuselage
. b)
dragger to a tricycle configuration,
you may
use scrap plywood to reinforce
aft position for the main landing gear on
the
bottom of the fuselage and the spare opening in the
wheel steering servo.)
openings in the control horns directly over the hinge lines and
rudder and elevator for the control horn mounting bolts. Attach one control horn to the rudder and one
ol horn to the elevator. (Note: If you setup the elevator to be driven by two servos, remove the
covering material from the precut servo opening in the top of the fuselage directly in front of the rudder,
and mount your rudder servo in this ‘extra’ servo
-mounting opening.
Additional pushrod required.
Page | 5
CA hinges to secure the rudder to the vertical stabilizer and apply thin CA adhesive to the CA hinges; also
minute epoxy has cured.
remove the Mylar covering that will be
G’s tail section by adding stranded metal wire
egin at the bottom of the fuselage, pass the
wire through one end of the horizontal stabilizer, then through the top of the vertical stabilizer, through
. b)
If you convert the
use scrap plywood to reinforce
the
bottom of the fuselage and the spare opening in the
openings in the control horns directly over the hinge lines and
drill holes in the
rudder and elevator for the control horn mounting bolts. Attach one control horn to the rudder and one
ol horn to the elevator. (Note: If you setup the elevator to be driven by two servos, remove the
covering material from the precut servo opening in the top of the fuselage directly in front of the rudder,
Additional pushrod required.
)
Page 4 of 10

RS010423
11. Connect a 12-inch servo-
wire extension
(Note: To ensure the security of your servo extension connections, we recommend you
install an optional “servo extension safety clip” at each servo wire
12.
Guide the servo extensions through the rudder and elevator servo openings and into the fuselage, then secure
the ends of the extensions inside the fuselage on the radio receiver’s tray with a piece of masking tape.
13. Usi
ng your servos’ hardware, mount your
supplied pushrod clevises, attach
to servo arm and contorl horn
give the ailerons, rudder and elevator a wide range
preferences. We
recommend beginner pilots start with the pushrods
more advanced pilots may adjust pushrod positions for additioal throw, if desired
14. Connect a 12-inch servo-
wire extension
an optional “servo extension safety clip” and use
servo extension through its wing panel and out the hole near the wing root.
15.
Insert the aileron’s CA hinges in their precut slots and test fit each aileron to its wing panel.
ailerons
to their wing panels by applying thin CA adhesive to each of the aileron’s CA hinges.
16. Test-fit the aileron control horns
. (Note: You may
the use of ‘aileron differentia
l’ by locating each servo horn
If you are not concerned about adverse yaw, or if you have a computer
aileron differential at your transmitter, position each aileron control horn
lines.)
Mark the position for each aileron control horn,
control horn’s mounting bolt. A
ttach one control horn to each aileron.
mount
your aileron servos in their precut
17. Use the supplied clevises to
attach the
aileron pushrods to the aileron
control horns.
18. With your aileron servos ce
ntered, t
end free end of the
aileron pushrod
arms on your aileron servos,
then use the hardware
supplied with your servos to securely
their aileron pushrods to eac
h aileron servo. (
enjoy the benefits of flying with
flaps, use separate
ailerons and set up your computer
-
available.)
19. For gas or glow set up, you need
a Z
included in this ARF). Inse
rt the pushrod almost fully through its opening in the firewall, leaving approx.
two or three inches exposed in front of the firewall.
20.
Select a servo control arm for your throttle servo that will provide enough pushrod ‘travel’ to go from ‘full
throttle’ to ‘just-
below idle’ (i.e., throttle ‘cut
accept the ‘mounting bolt’ in the end of the supplied quick
knurled mounting nut, ‘snugly’ attach the quick conne
the quick connector onto the servo control arm by applying a tiny drop of thick CA adhesive to the
exposed threads at the bottom of the quick connector’s mounting nut.
21. Slide the opening in the quick-con
nector onto the end of the throttle pushrod inside the fuselage;
temporarily tighten the quick-
connector’s set screw to affix the quick
22. Select which of the fuselage-
mounted servo tray options you prefer and mount your
fuselage.
Mentor-G V5
wire extension
to each of your rudder and elevator servos.
(Note: To ensure the security of your servo extension connections, we recommend you
install an optional “servo extension safety clip” at each servo wire
/extension junction.)
Guide the servo extensions through the rudder and elevator servo openings and into the fuselage, then secure
the ends of the extensions inside the fuselage on the radio receiver’s tray with a piece of masking tape.
ng your servos’ hardware, mount your
elevator and rudder servos
in their openings. Usin
to servo arm and contorl horn
. (NOTE: The
provided
give the ailerons, rudder and elevator a wide range
of adjustability to accommodate the builder’s
recommend beginner pilots start with the pushrods
connected to the outer
more advanced pilots may adjust pushrod positions for additioal throw, if desired
.
)
wire extension
to each of your aileron servos. Secure each connection with
an optional “servo extension safety clip” and use
masking tape and the provided string to pull each
servo extension through its wing panel and out the hole near the wing root.
Insert the aileron’s CA hinges in their precut slots and test fit each aileron to its wing panel.
to their wing panels by applying thin CA adhesive to each of the aileron’s CA hinges.
. (Note: You may
minimize the effects of any possible
l’ by locating each servo horn
slightly behind
the aileron’s hinge line.
If you are not concerned about adverse yaw, or if you have a computer
-
radio with the option of sett
aileron differential at your transmitter, position each aileron control horn
direclty
over
Mark the position for each aileron control horn,
then drill a hole
in each aileron for each aileron
ttach one control horn to each aileron.
Using your servos’ hardware,
your aileron servos in their precut
openings.
attach the
ntered, t
est-fit the free
aileron pushrod
s to the control
then use the hardware
supplied with your servos to securely
mount the control arms with
h aileron servo. (
Note: If you wish to
flaps, use separate
channels for the
-
radio’s ‘flaperon’ function if
a Z
-bend in one end of about 13-inch long
throttle pushrod
rt the pushrod almost fully through its opening in the firewall, leaving approx.
two or three inches exposed in front of the firewall.
Select a servo control arm for your throttle servo that will provide enough pushrod ‘travel’ to go from ‘full
below idle’ (i.e., throttle ‘cut
-
off’). Ream the hole in the throttle servo’s control arm to
accept the ‘mounting bolt’ in the end of the supplied quick
-
connector. Using the provided washers and
knurled mounting nut, ‘snugly’ attach the quick conne
ctor to the servo control arm, then permanently affix
the quick connector onto the servo control arm by applying a tiny drop of thick CA adhesive to the
exposed threads at the bottom of the quick connector’s mounting nut.
nector onto the end of the throttle pushrod inside the fuselage;
connector’s set screw to affix the quick
-
connector onto the throttle pushrod.
mounted servo tray options you prefer and mount your
Page | 6
to each of your rudder and elevator servos.
(Note: To ensure the security of your servo extension connections, we recommend you
/extension junction.)
Guide the servo extensions through the rudder and elevator servo openings and into the fuselage, then secure
the ends of the extensions inside the fuselage on the radio receiver’s tray with a piece of masking tape.
in their openings. Usin
g the
provided
control horns
of adjustability to accommodate the builder’s
connected to the outer
-most holes;
)
to each of your aileron servos. Secure each connection with
masking tape and the provided string to pull each
Insert the aileron’s CA hinges in their precut slots and test fit each aileron to its wing panel.
Secure the
to their wing panels by applying thin CA adhesive to each of the aileron’s CA hinges.
minimize the effects of any possible
adverse yaw by
the aileron’s hinge line.
radio with the option of sett
ing up
over
the ailerons hinge
in each aileron for each aileron
Using your servos’ hardware,
throttle pushrod
(not
rt the pushrod almost fully through its opening in the firewall, leaving approx.
Select a servo control arm for your throttle servo that will provide enough pushrod ‘travel’ to go from ‘full
off’). Ream the hole in the throttle servo’s control arm to
connector. Using the provided washers and
ctor to the servo control arm, then permanently affix
the quick connector onto the servo control arm by applying a tiny drop of thick CA adhesive to the
nector onto the end of the throttle pushrod inside the fuselage;
connector onto the throttle pushrod.
mounted servo tray options you prefer and mount your
throttle servo in the

RS010423 Mentor-G V5 Page | 7
23. Assemble your fuel tank (i.e., open the ‘stopper’ for the vent and clunk lines, add the included short
length of fuel tubing to attach the clunk to the clunk line, and use the included screw to seal the fuel tank’s
opening). Attach clunk and vent fuel lines to the outside of the tank, and insert the tank into the nose from
the opening under the wing-saddle. You may use scrap wood or nylon tie wraps to hold the fuel tank in
position. (Fuel tank is not included in this version.)
24. Test-position your engine’s battery and your receiver’s battery on the floor in the nose of the
fuselage.(During setup and adjustment you will re-position these batteries to fine-tune the CG.)
25. Decide on where you wish to position the engine’s and receiver’s power switches. You may
choose from among the precut switch openings, or decide on a new switch position if you wish.
(Note: Regardless of your engine’s or radio’s manufacturer, it is wise to maximize the distance
between your engine’s and your radio’s electrical components.)
26. Trial fit both switches (trim the openings if necessary) and install the engine and receiver switches.
27. Test-fit the engine’s ignition module immediately behind the firewall. Decide how
you plan to route the power, sensor and spark-plug wires. (Note: If you find the
ignition module’s spark plug cap does not easily pass through the hole in the fire-
wall, you may relieve the inside top of the hole in the firewall with a drum sander
on a high-speed rotary tool; the ignition module may not include mounting flanges.)
28. Test fit your engine and muffler to the firewall. Use the engine’s supplied
standoffs, mounting bolts and blind-nuts to temporarily attach the engine to the
firewall, then determine and mark where wood may need to be cut away from the
front of the fuselage to allow clearance for the engine’s cooling fins and muffler.
29. Remove and set aside the engine.
30. Remove any excess wood identified above
and smooth all edges. Apply 5-minute epoxy
to seal and fuel-proof all exposed/raw wood.
31. Once the epoxy is cured, install your engine,
its muffler, and make all engine connections:
As you bring the engine toward the firewall,
your first connection should be the throttle
pushrod’s Z-bend; then, secure the four sets
of mounting bolts and standoffs and apply
Lock-Tite or a similar thread-locking
compound. (NOTE: EZ Link connectors may
be used, but are not included.)
32. Route the high-voltage wire along the
engine’s left side, between the cylinder head
and muffler; route the sensor wire and the
fuel and vent lines along the engine’s right-
hand side.
33. Place the throttle servo’s control arm onto your
throttle servo’s output shaft, attach the servo arm’s
mounting screw, rotate the servo’s shaft to ‘full
throttle’ and position the throttle servo so the
engine’s throttle linkage is at ‘full throttle.’
34. Cut away the Mylar covering material from the
wing’s hold-down bolt holes and from the
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RS010423
correspond-ing holes in the
plywood wing hold
35. Connect
the rudder and elevator extensions, the throttle servo, and the receiver’s battery switch to
receiver
. If you are not setting up your radio for electronically
connect a Y-
cable to your receiver’s aileron channel. If
aileron differential at your transmitter, connect two
be using for aileron control. Wrap your receiver in cus
on the radio tray and secure your radio receiver safely in position with criss
are using a 72MHz. radio, route the antenna out of the fuselage and attach it to the top of the vertical stab.)
36.
Slide the two wing panels toward each other on their supplied
merge, allow them to self-align
onto the
37.
While holding the wing above the fuselage, connect the aileron’s extension wires to the corresponding
aileron wires attached to your receiver.
38.
Align and insert the plywood projections at the middle of the
leading edge with the opening behind the ‘windshield’
lage, then gently lower the wing onto the
39.
Place a flat washer onto each of the two (approx.
2 1/4-inch long)
wing hold down bolts
Guide the bolts (with
their flat washers) through the
holes in the plywood wing hold-
down plate, then into
and through the hold-
down holes in the wing.
40.
With the wing squarely aligned in the wing saddle, drive
these bolts firmly (but not so tight that wood becomes
crushed) into the fuselage-
mounted blind nuts at the rear
of the wing-
saddle. Then, carefully lift the airplane and
lay it on its back on a soft surface.
41. Test fit and i
nstall provided metal wheel a
landing gear. Use supplied self-
lock nuts to secare a
42. Slide a provided mains-wheel
onto each of two
Use supplied wheel collars to hold wheels in position
Congratulations! Assembly is finished!
VII. SETUP AND ADJUSTM
ENTS
1. For initial flights set the M
ENTOR
inches back from the leading edge of the wing. If necessary, move
add weight to the nose or tail to ensure the CG is correct.
(Hint: Once you have
determined the final position
the engine’s and radio’s
batteries in pl
some scrap
foam rubber into
tank to help secure these items against vibration.)
2.
Check the Mylar covering material’s joints and surfaces; if necessary, carefully use a
dedicated covering-
material iron to secure the edges and to
Recheck and retighten from time to time.
3.
Check/adjust servo centering, direction and end
Mentor-G V5
plywood wing hold
-down plate.
the rudder and elevator extensions, the throttle servo, and the receiver’s battery switch to
. If you are not setting up your radio for electronically
-
managed differential aileron response,
cable to your receiver’s aileron channel. If
you have a computer-
radio and will be setting up
aileron differential at your transmitter, connect two
6-
inch servo extensions to the two channels you will
be using for aileron control. Wrap your receiver in cus
hioning foam rubber, position y
on the radio tray and secure your radio receiver safely in position with criss
-
crossed rubber ban
are using a 72MHz. radio, route the antenna out of the fuselage and attach it to the top of the vertical stab.)
Slide the two wing panels toward each other on their supplied
aluminum wing rod
onto the
preinstalled alignment pin.
While holding the wing above the fuselage, connect the aileron’s extension wires to the corresponding
aileron wires attached to your receiver.
Align and insert the plywood projections at the middle of the
wing’s
leading edge with the opening behind the ‘windshield’
in the fuse-
lage, then gently lower the wing onto the
fuselage’s wing saddle.
Place a flat washer onto each of the two (approx.
wing hold down bolts
.
their flat washers) through the
down plate, then into
down holes in the wing.
With the wing squarely aligned in the wing saddle, drive
these bolts firmly (but not so tight that wood becomes
mounted blind nuts at the rear
saddle. Then, carefully lift the airplane and
nstall provided metal wheel a
elxs to the
lock nuts to secare a
elxs.
onto each of two
axles.
Use supplied wheel collars to hold wheels in position
.
Congratulations! Assembly is finished!
ENTS
ENTOR
-G’s Center of Gravity (CG) at
approx.
inches back from the leading edge of the wing. If necessary, move
the
batteries and/or
add weight to the nose or tail to ensure the CG is correct.
determined the final position
for your CG,
you may
batteries in pl
ace with double-
sided foam tape a
foam rubber into
the fuselage’s nose-
area around the batteries and fuel
tank to help secure these items against vibration.)
Check the Mylar covering material’s joints and surfaces; if necessary, carefully use a
material iron to secure the edges and to
tighten any loosened areas.
Recheck and retighten from time to time.
Check/adjust servo centering, direction and end
-
point adjustments. When you pull the
Page | 8
the rudder and elevator extensions, the throttle servo, and the receiver’s battery switch to
your
managed differential aileron response,
radio and will be setting up
inch servo extensions to the two channels you will
hioning foam rubber, position y
our radio receiver
crossed rubber ban
ds. (If you
are using a 72MHz. radio, route the antenna out of the fuselage and attach it to the top of the vertical stab.)
aluminum wing rod
. As these two panels
While holding the wing above the fuselage, connect the aileron’s extension wires to the corresponding
approx.
3 3/4-
batteries and/or
you may
secure both
sided foam tape a
nd pack
area around the batteries and fuel
Check the Mylar covering material’s joints and surfaces; if necessary, carefully use a
tighten any loosened areas.
point adjustments. When you pull the

RS010423 Mentor-G V5 Page | 9
right stick toward you, the elevator should deflect upwards; push the right stick to the
right and the right aileron should deflect upwards and the left aileron should deflect
downwards; push the left stick left and the rudder should deflect to the left as viewed
from the rear of the fuselage. Review your radio’s instruction manual if you require
assistance with any radio-related setup and/or servo-adjustment questions.
4. For initial flights set all linkages for near-max. possible deflections. If you are using a
Computer Radio: soften the aileron’s and elevator’s control throws by applying 30%
exponential.
Initial settings if you are using a Non-Computer Radio:
Low rates High rates
Ailerons ................. +10 degrees (+3/8-inch) ........... +15 degrees (+1/2-inch)
Elevator ................. +10 degrees (+3/8-inch) ........... +15 degrees (+1/2-inch)
Rudder ................... +10 degrees (+3/4-inch) ........... +15 degrees (+7/8-inch)
5. Trim adjustments: The ailerons and rudder will probably require no adjustments (in all
probability you will be able to leave them centered, as assembled); however, be
prepared to set the elevator trim depending on how slow or fast you fly. For example, if
you like flying low and slow, your MENTOR-G’s elevator may require a bit of up-trim.
VIII. PREPARATION FOR TRANSPORT AND FIELD SETUP
1. Unscrew and safely set aside the two screws that secure the wing to the fuselage.
2. Gently lift and slide the wing back, then lift it up and away from the fuselage.
3. Disconnect the two aileron servo extension cables. (If your radio uses separate channels
for each aileron servo, be sure to mark each aileron connection so they always get
connected to the same channel.)
4. To reattach the wings, reverse the above procedure. Be careful to firmly connect both
aileron servos and to snugly reattach (but not over-tighten) the wing hold-down screws
into the blind nuts inside the fuselage.
IX. PRE-FLIGHT CHECKS
1. Double-check the security of the engine, and make certain that all screws, linkages,
clevises and other connections throughout the air frame are secure.
2. Double-check the control directions of the throttle, ailerons, elevator and rudder.
3. As with all radio-controlled model airplanes, this model must pass the radio range
ground check recommended by your radio’s manufacturer, or you may not safely fly.
4. Get into the habit of moving your transmitter’s throttle to minimum before turning ON
your transmitter, and carefully break-in and operate your engine according to the
manufacturer’s instructions.
REMINDER: TH I S P R O D U C T I S NOT A T O Y .
 The quality and capabilities of your finished model airplane depend on how you build it.
 Your safety depends on how you use and fly it. Any testing or flying of this model airplane is done entirely at
your own risk.
Designed and manufactured by: Maxford USA RC Model Mfg, Inc.
13630 Imperial Hwy, Ste.11, Santa Fe Springs, CA 90670, USA
Website: www.maxfordusa.com Email: [e-mail] Tel: [phone]
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