Fenix G12-2 User manual
Fenix G12-2
1
G12-2 Rev. 0.0.2
Fenix
G12-2
Rev. 0.0.2
January 2024
Fenix G12-2
2
G12-2 Rev. 0.0.2
G12-2 is an high-competition, high-quality, 1/12-scale model car intended for persons aged 16 years and older with previous experience
building and operating RC model racing cars. This is not a toy; it is a precision racing model. This model racing car is not intended for
use by beginners, inexperienced customers, or inexperienced racers or by children without direct supervision of a responsible,
knowledgeable adult.
Before building and operating your G12-2, YOU MUST read through all of the operating instructions and instruction manual and fully
understand them to get the maximum enjoyment and prevent unnecessary damage. Read carefully and fully understand the
instructions before beginning assembly.
Contents of the box may differ from pictures. In line with our policy of continuous product development, the exact specifications of the
kit may vary without prior notice.
Take appropriate safety precautions prior to operating this model. You are responsible for this model‘s assembly and safe operation!
Please read the instruction manual before building and operating this model and follow all safety precautions
IMPORTANT NOTES –GENERAL
• This product is not suitable for children under 16 years of age without the direct supervision of a responsible and knowledgeable
adult.
• Carefully read all manufacturers warnings and cautions for any parts used in the construction and use of your model.
• Assemble this kit only in places away from the reach of very small children.
• First-time builders and users should seek advice from people who have building experience in order to assemble the model correctly
and to allow the model to reach its performance potential.
• Exercise care when using tools and sharp instruments.
• Take care when building, as some parts may have sharp edges.
• Keep small parts out of reach of small children. Children must not be allowed to put any parts in their mouth, or pull vinyl bag over
their head.
• Read and follow instructions supplied with paints and/or cement, if used (not included in kit).
• Immediately after using your model, do NOT touch equipment on the model such as the motor and speed controller, because they
generate high temperatures. You may seriously burn yourself seriously touching them.
• Follow the operating instructions for the radio equipment at all times.
• Do not put fingers or any objects inside rotating and moving parts, as this may cause damage or serious injury as your finger, hair,
clothes, etc. may get caught.
• Be sure that your operating frequency is clear before turning on or running your model, and never share the same frequency with
somebody else at the same time. Ensure that others are aware of the operating frequency you are using and when you are using it.
• Use a transmitter designed for ground use with RC cars. Make sure that no one else is using the same frequency as yours in your
operating area. Using the same frequency at the same time, whether it is driving, flying or sailing, can cause loss of control of the RC
model, resulting in a serious accident.
• Always turn on your transmitter before you turn on the receiver in the car. Always turn off the receiver before turning your transmitter
off.
• Keep the wheels of the model off the ground when checking the operation of the radio equipment.
• Disconnect the battery pack before storing your model.
• When learning to operate your model, go to an area that has no obstacles that can damage your model if your model suffers a collision.
• Remove any sand, mud, dirt, grass or water before putting your model away.
• If the model behaves strangely, immediately stop the model, check and clear the problem.
• To prevent any serious personal injury and/or damage to property, be responsible when operating all remote controlled models.
• The model car is not intended for use on public places and roads or areas where its operation can conflict with or disrupt pedestrian
or vehicular traffic.
• Because the model car is controlled by radio, it is subject to radio interference from many sources that are beyond your control. Since
radio interference can cause momentary loss of control, always allow a safety margin in all directions around the model in order to
prevent collisions.
• Do not use your model:
- Near real cars, animals, or people that are unaware that an RC car is being driven.
- In places where children and people gather
- In residential districts and parks
- In limited indoor spaces
- In wet conditions
- In the street
- In areas where loud noises can disturb others, such as hospitals and residential areas.
- At night or anytime your line of sight to the model may be obstructed or impaired in any way.
To prevent any serious personal injury and/or damage to property, please be responsible when operating all remote controlled models.
Failure to follow these instructions will be considered as abuse and/or neglect.
We have made every effort to make these instructions as easy to understand as possible.
However, if you have any difficulties, problems, or questions, please do not hesitate to
at www. Fenix-racing.com or www.fenixracingshop.com or https://www.facebook.com/FenixRacing.it/
the latest updates, set-up information, option parts, and many other goodies. We pride ourselves on taking excellent care of our
customers.
Just a quick note…. Read the manual “before” and not after….
Fenix G12-2
3
G12-2 Rev. 0.0.2
Carbon Nut assembly
--------- Read me first!!! ---------
G12.2 use this kind of special nut in several places.
Just take your time and the result will be great.
Those comes already pre-assembled, but is always good
to know “how to”, just in case of…
To insert the Nut in the carbon fibre you have to follow
this easy procedure.
Slide the M3 and M4 washer over the M3 x 12 Socket
Head Screw.
Insert the screw in the carbon part and tight by hand the
special nut.
Once the nut hit the carbon fibre it will start to secure
itself into the CF.
Tighten it slowly (very slowly ) until it stops.
Don’t overtight it – is completely unnecessary
Tip 1:
You might want to slightly chamfer the Top face with
your body reamer.
Just enough to remove the sharp edge
Tip 2:
When the nut hit the carbon fibre, before insert it fully,
you can add a tiny drop of thin slow cure CA glue. Very
tiny….
Tip 3:
Don’t use electric tools to drive the screw, most likely
you’ll end damaging the carbon fibre….
Fenix G12-2
4
G12-2 Rev. 0.0.2
Bag A
Front End
2 x G56038 Sphere
holder
2 x M20-K3 6mm sphere
Make 2 sets
Note: Be sure that the sphere holder fit easily, you might have to enlarge the hole with
some sandpaper.
Insert the group into
the G562-11 front arm –
Fix the sphere holder
with the provided O-
ring
Make 2 mirror sets.
Insert the OPT-038
Oring around the
sphere holder.
Insert 2 HW026 M3x12
countersunk screw into
G122-1 chassis
Insert 2 FX088 (5mm
thick) over the screw
and tight the lower arm
G562-11.
Fenix G12-2
5
G12-2 Rev. 0.0.2
If needed, use the
provided G562-14
shims to adjust the
front ride height.
Front end should look
like this.
Take care of the
direction for G56-039 .
The arrow is toward the
front of the car.
Secure the G56-030
upper arm mount to the
G56-039 using 2 HW004
M3x10mm Hex button
screw.
You have to prepare 2
mirror sets.
Install the 2 arm holders
using 4 x HW007 M3x8
countersunk screws.
Active caster settings.
0 Degrees are default
setting.
Fenix G12-2
6
G12-2 Rev. 0.0.2
G56-031 arm –
G56-033 eyelet-
G56-032 turnbuckle
G56-037 sphere
Make 2 sets
Note: the dimple is the
lower face
Slide the G122-7 front
beam into the upper
arm mounts, then insert
the G56-034 hinge pins
and secure them with
the HW031 M2x4 screw
Note: carbon holes are
precise, you might want to
enlarge them slightly
Steering hub, make 2
sets
Insert the kingpin into
the steering hub.
Thread portion will be a
bit tight, you can
enlarge a bit the hole
with a body reamer and
add a drop of oil while
treading it into the hub.
Fenix G12-2
7
G12-2 Rev. 0.0.2
Set the distance at
4.5mm.
The proper camber
setting should be set
with the car ready to
run.
Slide the kingpin and
spring as shown, close
them with the seeger
ring
Assemble the FX0061
ball stud using the HW-
003 M3x8 button screw
as shown.
The dimension shown
is a starting point, final
refinement will be
done while setting the
model
Make 2 sets
Fenix G12-2
8
G12-2 Rev. 0.0.2
Bag B
Servo Mount
Servo is not included, G12-2 need a Mini servo.
G12-2 can carry the following servos fixed directly on the chassis:
PowerHD M8 Pro
Sanwa PSG HR SXR
To use other servos, you can use the “bridge” provided, following instructions are meant for this situation.
You’ll find a
Kimbrough servo
saver, 25 spline.
Enlarge the
highlighted holes at
3mm diameter
Note: according your servo, you can use just one hole on the servo mount
Use the 2 x HW003
M3x8mm button to
secure the FX-FU48
to the servo saver.
Use the 4 x HW012
M3x6 countersunk
screw to fix the
FX022 servo mount
Note: Servo and Ball
stud position affect
Ackerman angle.
Use it as setup
option.
Assembled group.
Servo saver should be
vertical when servo is
neutral.
Servo saver can be
fixed with the
3x10mm screw or the
self tapping, according
the servo.
Fenix G12-2
9
G12-2 Rev. 0.0.2
Using 2 x HW008
M3x6 Button, fix the
servo group to the
G12-7 servo holder.
Insert 2 washer under
the M3x6 screws
Take care to centre
the servo saver
toward the servo
holder.
Fix the servo group to
the chassis using
15mm post
Insert the FX0074
3mm shims under the
15mm post
Fix the group to the
chassis with HW007
M3x8 screws
Front end is omitted
for clarity
Bag C
Motor Pod
NOTE:
Before start to assembly the rear end of G12-2, we strongly suggest you, to visit the Fenix Racing Youtube
channel and look the “V-link suspension setup” video.
Just scan the QR code
Also, in our Youtube
page, you’ll find
some cool video
about Fenix Racing.
Fenix G12-2
10
G12-2 Rev. 0.0.2
Using 3 x HW012 M3x6
countersunk screw fix
the V-link F2 to the
motor pod.
Insert 2 x male ball
stud into the V-link F2.
There will be other
HW012 M3x6
countersunk screws,
you’ll use to fix the
sphere for the links.
Insert 2 x male ball
stud into the V-link F2.
Build 2 set of link using
2 x TR15 and 4 FX0037
- short
Keep this dimensions.
Fix the link over the V-
link F2
Fenix G12-2
11
G12-2 Rev. 0.0.2
Using 4 x HW012
countersunk screws,
fix the motor holder to
the motor pod.
Tight the screws evenly
using an “X” pattern
Note: V-Link F2 is
omitted for sake of
clarity.
Note: the arrow show a screw that might interfere with some
motors/certain gearing. Please check.
Insert the bearing into
the G12-C bearing
holder.
Note that the mark
should be on the same
position (vertex NOT
important) .
G12-C allow you play
with the wheelbase
giving +1mm
Fix the G12-C to the
bulkheads with 2
HW003 M3x8 button
screw in the front
holes.
Rear holes, you need
to install the G12-10
brace and fix brace and
G12-C using HW029
M3x12 button screws.
Tight the screws evenly
using an “X” pattern
Fenix G12-2
12
G12-2 Rev. 0.0.2
Use the provided
HW008 M3x6 button
screw to install the ball
stud to the shock
holder.
Note: Wait to install
the shock holder to the
motor group.
Note:
Option for the Alu
version.
Insert 2 x 0.5mm shims
under the link sphere.
Not included in the
carbon version
How about a cup of coffee now? You deserve it!
While drinking it, maybe you can also visit
our FB pages
Fenix G12-2
13
G12-2 Rev. 0.0.2
Bag D
Rear V-link and
common parts
Prepare 2 sets –
note the position of
the spheres.
Use 2 x HW0014
M2x 6 screws and 2
x FX002 spheres
each
Grub screw M3 x 8
Prepare 2 side
spring set as
shown.
Assembly the 2 side
dampers as shown
Prepare 2 mirror
like side element,
using G122-3
Fix the body post
using 1 HW003
M3x8 button screw.
Fix the FX0061 using
1 HW008 M3x6
button screw.
Insert the side
spring group into
the carbon fibre
Assembly the M20
V-link1 to the
chassis, using 2 x
Fenix G12-2
14
G12-2 Rev. 0.0.2
HW012 M3x6
countersunk
screw.
Install the FX0061-
M in the M20 V-
link1 as shown.
Install the side
group as shown
using 1 x HW001
M3x20 countersunk
screw and 1 HW020
M3x15 countersunk
screw.
Make both sides.
Note:
Do not tighten fully
the screws
You can insert 1 x
HW003 M3x8
button screw plus 1
HW018 M3 washer
Both sides
Fenix G12-2
15
G12-2 Rev. 0.0.2
Insert 2 HW008
M3x6 button screw.
Trick!
Do it in on a flat
surface, making a
light pressure over
the chassis
Install the side link
you’ve prepared
before.
Insert a 2mm spacer
between the carbon
side wing and the
link.
Use 2 x 2mm allen
to tight the sphere
link.
Check our channel on Youtube for some explicative video.
Now you can couple
the motor pod to
the chassis group.
Side links can be
installed using 2 x
HW012 M3x6.
Now, lay the car on
a flat setup board
and make the final
fine tuning of the
links length. Chassis
and motor pod must
lay flat on the setup
board.
Take the proper
time for this setting.
Fenix G12-2
16
G12-2 Rev. 0.0.2
Install the G122-4
shock holder, using
4 by HW008 3x6
button screw
Install now the side
dampers
Using an HW033
M3x10 countersunk
screw fix the
FX0053-20 post.
Install the 2mm
shim between the
post and the
chassis.
Tight the group
firmly.
Insert the male stud
FX0061-M in the
post.
Install the front
body post to the
bumper using 2 x
HW003 M3x8
button screws.
Fix the bumper to
the chassis using 2 x
HW004 M3 x 10
countersunk screws
and M3 Nylocks
Fenix G12-2
17
G12-2 Rev. 0.0.2
Shock Bag
(soft) Red - Yellow - Blue - White –Black (hard)
Springs supplied
2 –3 –4 Cylindrical holes * 2- 3 - 4 Conical holes
Pistons supplied
The M20-K7 shock
adjuster will be used
to adjust the motor
pod droop.
Take care when
using conical pistons
as shown.
Start assembling the
piston . 4 holes .
Slide the 3mm shim
over the shock shaft.
Lubricate and insert
the o-ring into the
setting ring.
Slide the setting ring
over the shock body.
Fenix G12-2
18
G12-2 Rev. 0.0.2
Lubricate the o-ring
and guide ring with
shock oil or
differential grease
Screw together the
G12-K7 droop
adjuster and the ball
joint (long one)
Fill the shock absorber with your favourite oil…
A good starting point will be #600 with 4 holes
Close the shock
absorber with
rubber seal, ball joint
and cap.
Slide the spring and
spring holder in
position.
Blue spring is a good
starting point.
Fenix G12-2
19
G12-2 Rev. 0.0.2
Spool axle
Fix the spur to the
spool with the M3x6
screws.
Slide the 8mm
spacer and install the
drive clamp, fix it
with the 2.5mm x 8
screw.
Insert the spool in
the motor bulkhead.
On the left side, slide
the FD12-3 4.5mm
spacer over the axle,
then insert the drive
clamp and , fix it
with the 2.5mm x 8
screw.
Leave a tiny bit of
axial play
(0.1/0.2mm)
Fenix G12-2
20
G12-2 Rev. 0.0.2
Tech area
G12-2 represent a major breakthrough in the 1/12 class. Nothing comes close to this 1/12 model.
We’ve had several drivers developing the car, from Club racers to ETS and Nationals A-main finalist,
and we’d like to thank all of them for the time and dedication they put in this project.
Front End: We choose to share the same front end used on G56.2, this allows you to use an easy and
proven system that allows you to alter camber, caster and dynamic caster.
Rear End: V-link: we spent quite a lot of time developing this rear end, using different brand of tires,
driving on carpet and asphalt.
G12.2 allow several different major setting, according their main chassis
V-Link suspension has the unique ability to alter the roll centre position.
You can alter significantly the amount of rear grip by changing the roll centre position.
B2 is very much like a common pivot rear suspension - A1 give the lowest roll centre.
Most of the time, you’ll find a very comfortable setting using A2 or A3 position. Do not set the model in A4
Of course the 2 connection link must have the same length!!!
Here you can see how to set the V-link!
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