Team Losi JRXSR User manual

i
Thank you for selecting the JRX-S Type R as your new racing sedan. As you probably know, during the development of the Type R, it
posted outstanding race results and distinguished itself as a remarkable racing chassis that is both easy to drive and tune for a wide variety of
track conditions. Every effort has been made to produce a kit that offers you the most competitive chassis that is also easy to build and main-
tain. The simple bag-by-bag assembly sequence and easily followed instructions and drawings combined with Team Losi’s world famous
quality fitting parts will make building the JRX-S Type R a most enjoyable project.
Before you open the first bag, or start assembly, please take a moment to read through the following instructions. This will familiarize
you with the various parts, assembly tips, and descriptions as well as the tools needed. Taking an extra moment before starting can save a
good deal of time and assure proper assembly.
Good luck and good racing,
Team Losi Research and Development Team
Welcome Team Losi JRX-S Type R Owner!
Kit/Manual Organization:
The kit is composed of different bags markedA through F. Each
bag contains all of the parts necessary to complete a particular sec-
tion of the kit. Some of these bags have sub-assembly bags within
them. It is essential that you open only one bag at a time and follow
the correct assembly sequence, otherwise you may face difficulties in
finding the correct part. It is helpful to read through the instructions
for an entire bag prior to beginning assembly. Next to each of the step
numbers is a check box.At the completion of each step, place a check
in this box so that if you must stop and come back to the assembly,
you will be able to pick up where you left off.
For your convenience, an actual-size Hardware Identification
Guide is included as a fold-out page at the back of this manual. Hard-
ware that is not easily differentiable in each step is called out with an
icon which contains a small picture of the part genre (referenced on
the Hardware Identification Guide), the quantity of that part required
for what is shown in the step,
and the size or name of that
part and the LOSA-Number.
To check a part, hold it against
the silhouette until the correct
part is identified. Associated
with each of these parts, in the Hardware Identification Guide, is a
LOSA-Number which is used when ordering replacement parts for
your JRX-S Type R. In some cases, extra hardware has been supplied
for parts that may be easy to lose.
Components used in each step are identified by their relative
LOSA-Number and the component’s name. With the exception of
a few parts, these are not referenced in the Hardware Identification
Guide.
The molded parts in Team Losi kits are manufactured to de-
manding tolerances. When screws are tightened to the point of being
snug, the parts are held firmly in place. For this reason, it is very
important that screws not be overtightened in any of the plastic
parts.
In some steps there will be a filled black circle with a white
number. These indicate the specific order by which assembly must
occur. In cases where steps are repeated (front/rear or left/right) these
numbers may be omitted. Please note that these numbers will not call
out every sub-step required for the step’s assembly procedures, they
will only highlight the critical order required for assembly.
In each step, there are specific “Detail Icons” (shaped like a stop
sign) that call out critical precautions or assembly tips for the pro-
cess. There is a reference key that describes the meaning of each of
the icons located on the fold-out Hardware Identification Guide at
the back of this manual.
To ensure that parts are not lost during construction, it is rec-
ommended that you work over a towel or mat to prevent parts from
rolling away.
IMPORTANT SAFETY NOTES:
1. Select an area for assembly that is away from the reach of small
children. Some parts in this kit are small and can be swallowed
by children, causing choking and possible internal injury;
PLEASE USE CAUTION!
2. The shock fluid and greases supplied should be kept out of chil-
dren’s reach. They are not intended for human consumption!
3. Exercise care when using any hand tools, sharp instruments, or
power tools during construction.
4. Carefully read all manufacturer’s warnings and cautions for any
chemicals, glues, or paints that may be used for assembly and
operating purposes.
Note: Final kit weight will vary depending on accessories used.
*All measurements taken at ride height (4mm).
Overall Chassis Length: 14-7/8in (378mm) Wheelbase: 10-3/16in (259mm) *Front Track Width: 7/5/16in (186mm)
Overall Length w/Tires: 16-7/8in (429mm) *Overall Height: 4-1/2in (114mm) *Rear Track Width: 7-3/8in (188mm)
Table 1: JRX-S Type R Completed Kit Specifications.
JRX-S Type R COMPLETED KIT SPECIFICATIONS
INTRO
INTRO
Intro to the JRX-S Type R Manual
STEP I-01


ii
Team Losi is continually changing and improving designs; therefore, the actual part may appear slightly different than the illustrated part. Illustrations of parts and assemblies
may be slightly distorted to enhance pertinent details.
TOOLS REQUIRED FORASSEMBLY
Team Losi has supplied all necessary Allen wrenches and a special wrench that is needed for assembly and adjustments. The following com-
mon tools will also be required: Needle-nose pliers, regular pliers, hobby knife, scissors or other body cutting/trimming tools, and a soldering
iron may be necessary for radio installation. 3/16in and 1/4in nut drivers are optional and a 7mm nut driver is required for final assembly.
RADIO/ELECTRONICS
A suggested radio layout is provided in this manual. Your high performance R/C center should be consulted regarding specific questions
pertaining to radio/electrical equipment.
HARDWARE IDENTIFICATION
When in question, use the Hardware Identification Guide at the back of this manual.
For screws, the prefix number designates the thread size and number of threads per inch (i.e., 4-40 is a #4 size thread with 40 threads per
inch). The second number, or fraction, designates the length of the screw. For cap head and button head screws, this number refers to the
length of the threaded portion of the screw. For flat head and set screws, this number refers to the overall length of the screw.
Bearings and bushings are referenced by the inside diameter (I.D.) x outside diameter (O.D.).
Shafts and pins are designated by type (Roll, Solid) and referenced by diameter x length.
Washers, Spacers and Shims are described by inside diameter or the screw size that will pass through the inside diameter x the thickness
or by their designated application (i.e., Ball Stud washer is primarily used under a Ball Stud).
Retaining Clips are sized by the shaft diameter that they attach to or by type (Body). The Hardware Icon associated with E/C-Clips only
designates the part genre of clips, not the actual part.
Nuts come in four types, Non-Flanged, Flanged (F), Plain, and Locking (L) (designated on the Hardware Icons). The prefix number desig-
nates the thread size and number of threads per inch. The second number, or fraction, designates the size of the hex. For example, L 4-40
x 1/4” designates a Lock nut that will thread onto a 4-40 screw using a 1/4” nut driver.
Ball studs are described by the length of the neck between the base and the bottom of the ball (i.e., standard, short) and the length of the
threaded portion.
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TABLE OF CONTENTS
SECTIONS
1. INTRODUCTION...................................................i
Kit/Manual Organization ................................... i
Important Safety Notes...................................... i
Tools Required for Assembly............................ ii
Radio/Electronics.............................................. ii
Hardware Identification .................................... ii
2. Bag A: Drivetrain ................................................1-4
3. Bag B: Front Suspension.....................................5-8
4. Bag C: Rear Suspension.................................... 9-11
5. Bag D: Shocks.................................................12-13
6. Bag E: Servo / Chassis....................................14-16
7. Bag F: Final Chassis/Electronics..................... 17-20
8. Checklist Before Your First Run ........................21
9. Setup Guide ....................................................22-26
10. Kit Setup Sheet: Asphalt ......................................27
11. Blank JRX-S Type R Setup Sheet........................28
12. Hardware Identification Guide...........................29
13. Build Setup Sheet: Carpet....................................30
TABLES
Table 1: JRX-S Type R Completed Kit Specifications.. i
Table 2: Servo Installation .........................................14
Table 3: 64P Gear Ratios............................................22
Table 4: Suggested Motor Gearing ............................22
INTRO
INTRO
Please visit us at: www.TeamLosi.com

1
A3322
Spool Hub
A3327
Drive Hub
A3327
Drive Pulley, 23T
A4326
Bulkhead, Left Rear
Bulkhead, Right Front
A4328
Bulkhead, Left Front
A4327
Bulkhead / Motor Mount
A4325
A4305
Chassis, 2.75mm
Un-fold the Hardware Page and leave it out during the assem-
bly process. Use this page to properly identify hardware in the
individual steps. Here you will find pictures of hard-to-identify
hardware that can be matched with the actual parts by laying
them over the pictures.
Also on this page are “Detail Icons” which provide you with
pertinent information about the step that you are doing. These
are in the shape of a STOP sign as a hint to stop and pay atten-
tion to the instructions.
For more information, please read the “Kit/Manual Organiza-
tion” section on Page iof this manual.
Located on the back of this Hardware page it the JRX-S Type
RBuild Setup Sheet, filled out with the setup that this manual
builds to. If any of the steps are confusing or difficult to see
specific locations, use this Setup Sheet as a reference.
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BAG A
BAG A
Fold-Out Hardware Page
STEP A-00
Drive Pulley Assemblies
STEP A-01

Bulkhead Installation
STEP A-02

2-56 x 3/16”
x6
A6239
4-40 x 1/4”
x10
A6213
#-## x #/##”
x#
A####

2
7
Rear Belt
A3304
64P, 128T
Spur Gear
Top Shaft
2
1
3
4
5
6
A3970
A3254
8
Diff Balls
3/32" Carbide
Diff D-Ring
A3070
A3319
Diff Outdrive
A2908
Diff Screw A2908
Diff Seal
A3018
Thrust Washer
A3018
Caged Thrust Bearing A2908
Diff Spring Pulley, 42T
A3317
Diff Ring Shim
(Bronze)
A3039
Diff Round Ring
Diff Tube A3039
A3326 A6951
A3318
Diff Hub
DO NOT PINCH BELTS
Apply a small amount of Clear Diff Grease to the Diff Hub, DiffTube, and Diff Ring Shim before install-
ing the Diff Rings.
Apply enough Clear Diff Grease to the top side of the Diff Rings, or to both sides of recessed Ball section
in the Diff Pulley (after Diff Balls are installed) to cover the Diff Balls when the Diff is assembled.
Assemble the Diff and tighten until some resistance is felt, see the Final Checklist for final Diff adjust-
ment procedures. *Note: Insert the Team Losi Flat Wrench into the Diff Hub and hold while tightening
the Diff Screw.
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CAUTION! Some Thrust Bearing assemblies come bound with a small wire. This wire must be re-
moved before installing the Thrust Bearing.
Be sure to use the White Grease for the Thrust Bearing.
When installing the Thrust Washers, notice that the two washers have different outer diameters and in-
ner diameters. Be sure to use the Washer with smaller diameters next to the head of the Diff Screw.
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BAG A
BAG A
Top Shaft Assembly
STEP A-03

Differential Assembly
STEP A-04

4mm E-Clip
x2
A6106
1/16” x 1/2”
x1
A3253
SOLID
.067 X 5/16”
x1
A6406
SOLID
4mm x 8mm
x2
A6936
4mm x 1.3mm
x2
A3253 1
2
3
4
5
6
7
8
1/4 x 3/8”
x1
A6931
x2

3
A4329
Bulkhead Clamp
A4330
Bulkhead Cap
A3303
Front Belt
A3316
Bearing Eccentric
A6120
O-Ring, 10x1mm
A6910
1/2" x 3/4" Ball Bearing
DO NOT PINCH BELTS
Install the Bulkhead Caps and Clamps by installing the Screws in the order shown
below. Use only Screw (4) to adjust the Clamp and set the Belt tension.
For improved Clamping, it may be necessary to score the clamping surface of the
Eccentric with an hobby knife, or similar tool, in a few spots around the diameter.
•
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BAG A
BAG A
Eccentric Assembly
STEP A-05

Differential Installation
STEP A-06

x2
2-56 x 1/4”
x8
A6232
#2 x 0.015”
x2
A6360
1
2
3
4

4
(3mm)
Vertical Play
(.118in)
(4mm)
Vertical Play
(.157in)
Ensure the Front Differential is rotated into
the High Position and the Rear Differential
is rotated into the Low Position.
To change Differential height positions be
sure to rotate the Eccentrics in the direction
that loosens the belt tension. Failure to do
this will damage the drive Belts.
Using Screw (4) to adjust the Bulkhead
Clamp, set the Belt tension to have the verti-
cal play as shown for front and rear.
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•
Tighten
Loosen
Tighten
Loosen
Front
(High Position)
Rear
(Low Position)
BAG A
BAG A
Belt Tension Setting
STEP A-07

Completed Bag A Assembly
STEP A-08


5
(12.70mm)
(.5in)
Shrink Tubing
A3335
4
A3335
LCD Coupler
LCD Axle, M4x0.7
A3345
LCD Coupling
A3335
2
LCD Dogbone, 45mm
1
1
2
A3346
3
Shrink Tubing
4
Hex Adapter
2
12mm
1
Upper Arm Bushing
A1218 High
4
Steering Bushing
A3260
Left, 4
A1233
Spindle Carrier
(Low Position)
A9762
A1218
Upper Arm Swivel
3
Low
A9760
Spindle
Apply Synthetic White Grease to the Axle, Dogbone and
Couplings.
Assemble the Coupling, Axle, Dogbone, Coupler and Pins.
Install cut length (may come pre-cut to length in some kits)
of heat Shrink Tubing, centered over Coupler and apply
heat to shrink.
Trim excess Shrink Tubing flush with Coupler.
Ensure Free Movement.
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•
*NOTE: It may be necessary to
trim some material from the edge
of the large hole in the Spindle
Carrier to provide clearance for
the installed Shrink Tubing.
•
BAG B
BAG B
LCD Driveshaft Assembly
STEP B-01

Spindle Carrier Assembly
STEP B-02

1
2
3
2
1
4
1/16” x .312”
x2
A3335
SOLID
x2
5
1
2
3
4
4
.250”
x1
A6026
.067” x 5/16”
x1
A6406
SOLID
3/16” x 3/8”
x2
A6916
3/16 x .005”
x1
A6230
4-40 x 1/2”
x1
A6256
#4 x 0.025”
x1
A1218
4-40 x 5/16”
x1
A6245
3/16” x .130”
x1
A6365

6
A1217
Front Arm, Left
A6054
Suspension Pivot Ball
(1) High Roll Center, Wide Pivot (Short Arm)
(2) Low Roll Center, Narrow Pivot (Long Arm)
44
4
2
2
(Position #2)
(Position #2)
5
3
3
Outer Pivot, 0
11
1
3
2
A9695 A9690
Inner Pivot
6
(3) High Roll Center, Narrow Pivot (Long Arm)
(4) Low Roll Center, Wide Pivot (Short Arm)
(1) High Roll Center, Wide Pivot (Short Arm)
2
(2) Low Roll Center, Narrow Pivot (Long Arm)
1
12
4
(3) High Roll Center, Narrow Pivot (Long Arm)
(4) Low Roll Center, Wide Pivot (Short Arm)
33
4
Be sure to install the Locating Pin Screws (from the bottom) before
attaching the Outer Pivot Blocks to the Chassis.
Install each Locating Pin Screw so that the threads do not protrude
from the bottom of the part, but the smooth portion does.
•
•
CAUTION! Ensure the dogbone
is inserted into the narrow slot in
the Outdrive before installing the
Tierod.
Apply a small amount of White Grease to the inside of
the Suspension Pivot Balls before installing onto the
Hinge Pin. This will ease further assembly.
The Locating Pin Screws are used for Droop and Up-
travel setting. See Setup Guide for adjustments tips.
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BAG B
BAG B
Front Arm Assembly
STEP B-03

Front Arm Installation
STEP B-04

Locating Pin
x2
A6243
1/8” x 0.0625”
x2
A2127
3/32” E-Clip
x2
A6103
1
2
3
4
5
6
Locating Pin
x2
A6243
4-40 x 3/8”
x4
A6210
1/8” x 2.125”
x1
A6094
HINGE
3/32” x .930”
x1
A6081
HINGE
5-40 x 5/16”
x1
A6251

7
A5324
Shock Stand-off
A9746
Front Shock Tower
A1218
Upper Arm
A6017
Rod End
(47.22mm)
(1.859in)
Install the Set Screw into the Rod End until
the Screw bottoms out.
Install the Upper Arm onto the Screw and
adjust to proper length and orientation.
•
•
Front Shock Tower Installation
STEP B-05

BAG B
BAG B
Upper Arm Installation
STEP B-06

4-40 x 1/2”
x2
A6256
Female
x2
A6009
4-40” x 5/16”
x2
A6245
4-40 x 3/8”
x2
A6206
Ball Stud
x2
A6215
4-40 x 5/8”
x1
A6248
3/32” E-Clip
x2
A6103 4-40 x 1/8”
x2
A6227
3/32” x .735”
x2
A6080
HINGE

8
(39.41mm)
(1.552in)
A6532
Titanium Turnbuckle
A6017
Rod End
Use the Team Losi Flat Wrench to hold the Turnbuckle while
installing the short Rod Ends.
On the left side of the car, be sure to install the assembled Tierod
onto the car with the chamfer (beveled portion of the square) to-
wards the outside of the car for easier adjustment later.
On the right side of the car, be sure to install the assembled Tierod
onto the car with the chamfer (beveled portion of the square) to-
wards the inside of the car for easier adjustment later.
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•
BAG B
BAG B
Steering Tierod Installation
STEP B-07

Completed Bag B Assembly
STEP B-08


9
6
12mm
Hex Adapter
Rear Hub Carrier
A9865
RCD Axle, M4x0.7
A3339
RCD Dogbone
A3340
RCD Coupling
1
3
2
4
5
A3260
A3341
7
Rear Arm, Left
A2223
A6054
Pivot Ball,
Suspension
Apply Loctite® to the Set Screw and
partially thread it into the Coupling.
Apply Synthetic White Grease to the
RCD Dogbone and Coupling.
Assemble the Coupling, Dogbone and
Pin, then tighten the Set Screw.
Ensure Free Movement.
•
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•
•
Apply a small amount of White Grease to the inside of
the Suspension Pivot Balls before installing onto the
Hinge Pin. This will ease further assembly.
The Locating Pin Screws are used for Droop and Up-
travel setting. See Setup Guide for adjustments tips.
•
•
RCD Driveshaft Assembly
STEP C-01

BAG C
BAG C
Rear Arm Assembly
STEP C-02

1
2
3
4
5
6
7
x2
4-40 x 3/32”
x1
A6248
1/16” x .390”
x1
A3341
SOLID
.067” x 5/16”
x1
A6406
SOLID
1/4”
x1
A6026
3/16” x 3/8”
x2
A6916
3/16” x .005”
x1
A6230
3/16” x .130”
x1
A6365
5-40 x 3/16”
x1
A6251
1/8” x 2.0625”
x1
A6091
HINGE
3/32” E-Clip
x2
A6103
3/32” x .930”
x1
A6081
HINGE
1/8” x .0625”
x1
A2127
Locating Pin
x2
A6243

10
(1) High Roll Center, Wide Pivot (Short Arm)
(2) Low Roll Center, Narrow Pivot (Long Arm)
(3) High Roll Center, Narrow Pivot (Long Arm)
(4) Low Roll Center, Wide Pivot (Short Arm)
12
(1) High Roll Center, Wide Pivot (Short Arm)
(2) Low Roll Center, Narrow Pivot (Long Arm)
1
2
Outer Pivot, 2
(Position #2)
A9697
A9690
Inner Pivot
(Position #2)
34
(3) High Roll Center, Narrow Pivot (Long Arm)
(4) Low Roll Center, Wide Pivot (Short Arm)
3
4
1
44 3
3
2
2
4
5
1
1
2
3
6
Shock Stand-off
A5324
A4239
Rear Body Post
A9842
Rear Shock Tower
Be sure to install the Locating Pin Screws (from the bottom) before
attaching the Outer Pivot Blocks to the Chassis.
Install each Locating Pin Screw so that the threads do not protrude
from the bottom of the part, but the smooth portion does.
•
•
BAG C
BAG C
Rear Arm Installation
STEP C-03

Rear Shock Tower Installation
STEP C-04

1
2
3
4
5
6
Locating Pin
x2
A6243
4-40 x 3/8”
x4
A6210
4-40 x 3/8”
x2
A6229
4-40 x 1/2”
x2
A6256
4-40 x 5/16”
x2
A6245
4-40 x 3/8”
x2
A6206
Ball Stud
x2
A6215
Female
x2
A6054

11
(40.30mm)
(1.587in)
A6017
Rod End
A6532
Titanium Turnbuckle
15mm
CAUTION! Ensure the dogbone
is inserted into the narrow slot in
the Outdrive before installing the
Tierod.
Use the Team Losi Flat Wrench to hold the Turnbuckle while
installing the short Rod Ends.
On the left side of the car, be sure to install the assembled Tierod
onto the car with the chamfer (beveled portion of the square) to-
wards the outside of the car for easier adjustment later.
On the right side of the car, be sure to install the assembled Tierod
onto the car with the chamfer (beveled portion of the square) to-
wards the inside of the car for easier adjustment later.
•
•
•
BAG C
BAG C
Rear Camber Tierod Installation
STEP C-05

Completed Bag C Assembly
STEP C-06


12
A5319
Shock Adjustment
Nut
A5319
Shock Adjustment
Nut O-Ring
A5321
Shock End
A5330
Shock Shaft, 27mm
USE ONLY FOR
ASSEMBLING SHAFT
TO SHOCK END,
THEN REMOVE!
A5317
Shock Cap,
Bottom
A5326
Shock Shaft
Busing
A5326
Shock Shaft
O-Ring, 2.75mm
A5326
Shock Shaft
O-Ring, 8.2mm
A5310
Shock Body
A5341
Shock Pistion, #56
Red, Front/Rear
A5323
Shock Ball
A5316
Shock Cap,
Top
A5321
Shock Top
A5328
Shock Bladder,
Firm
A5350
Spring, 17.5lbf
in
Rear
A5353
Spring, 30lbf
in
Front
A5321
SpringCup
A5227
Shock Oil,
50wt.
Thread the 2-56 x 5/16” Cap Head Screw into Shock Shaft us-
ing a 5/64” (or 2mm) Allen wrench.
Thread the Shaft into the Shock End (using the 2-56 Cap Head
Screw) until the edge on the Shaft (between the smooth and
threaded sections) meets with the edge of the Shock end. Now,
holding the Shaft and Screw, turn the Shock End an additional
2.5 rotations. Usually it is best to use half-rotation increments
(DO NOT THREAD IT ON MORE THAN THIS). Remove
the Cap Head Screw.
Place a drop of Shock Oil onto the end of the Shaft with the hole
in it and slide it through the assembled Shock Body as shown.
Install the Piston using the 2-56 x 1/4” Button Head Screw,
Applying Loctite® to the Screw after threading it through the
Piston.
Install the ShockAdjustment Nut O-ring into the ShockAdjust-
ment Nut before installing the Nut onto the Shock Body.
•
•
•
•
•
Ensure the Shaft is fully extended when filling the Shock.
Fill the Shock Body with 50wt. Shock Oil until the Oil is ap-
proximately 1/16” from the top of the Body.
“Work” the Shock Shaft up and down a few times. This will re-
lease the air bubbles trapped beneath the Piston. Place the filled
Shock, in the upright position, off to the side for a few minutes
until the air bubbles escape from the Oil.
Once all the air bubbles are out of the Oil, gently place the Shock
Bladder onto the Shock as shown. Some Oil should “bleed”
from the Shock.
Place the plastic Shock Top into the Shock Cap (top) (NOTE:
There are two Shock Tops, use two dots to designate left side
shocks and one dot to designate right side shocks.
Screw the Shock Cap onto the Body until some resistance is
felt.
Slowly push the Shock Shaft up. This will bleed excess Oil
from the Shock.
Tighten the cap all the way down by hand.
Move the Shock Shaft up and down. The Shaft should be easy
to push up into the Body of the Shock. If increased pressure is
felt towards the top, there is to much oil in the Shock. Loosen
the Shock Cap and “bleed” the Shock as done previously.
Make sure each pair (front/rear) Shocks have the same rebound
and compression. This is checked by holding one Shock in each
hand horizontally and pushing them together by the Shock End.
Watch carefully to ensure that both compress evenly. Now re-
lease both Shocks and again watch carefully as they should re-
bound the same.
If there are differences, adjust the Shocks with the amount of
Oil, either adding or bleeding (THERE SHOULD BE NO
AIR IN THE SHOCK WHEN COMPLETE).
•
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•
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•
•
•
•
•
Optional double
O-ring setup
BAG D
BAG D
Shock Body Assembly
STEP D-01
Final Shock Assembly
STEP D-02

2-56 x 1/4”
x1
A6255
2-56 x 3/8”
x1
N/A
x4 x4

13
Recall: Place Shocks containing two dots, on the Shock Top, on
the left side of the car, and the Shocks containing one dot, on
the Shock Top, on the right side of the car.
•Recall: Place Shocks containing two dots, on the Shock Top, on
the left side of the car, and the Shocks containing one dot, on
the Shock Top, on the right side of the car.
•
BAG D
BAG D
Front Shock Installation
STEP D-03
Rear Shock Installation
STEP D-04

Completed Bag D Assembly
STEP D-05

4-40 x 3/8”
x1
A6229
4-40 x 3/8”
x1
A6229
Ball Stud
x1
A6215

14
WIDE
NARROW
SERVO MOUNT
CONFIGURATIONS
(SEE TABLE 2)
Servo Screw
(NOT SUPPLIED)
(See Table & Above)
Servo Mount
A1547
(See Table & Above)
Servo Mount Spacer
A1547
(See Table & Above)
Servo Horn
A1547
Servo
(NOT SUPPLIED)
Servo Manufacturer, Make/Model Servo
Horn Mount Position Spacer Use
JR 23T Wide None
ALL
KO 25T Wide 1
ALL
Hitec 24T Wide None
ALL
Futaba 25T Wide 1
ALL
Airtronics 23T Wide 1-2
ALL
Table 2: Servo Installation Table for the JRX-S Type R Expert Racing Sedan.
Use the Servo Mount Spacers to position the servo as close to the
Front Bulkheads as possible, but not touching.
Ensure the servo gear is centered before attaching the Servo Horn.
This is best accomplished by connecting the servo to the radio sys-
tem and setting the trim to center.
DO NOT tighten the four 4-40 x 1/2” Cap Head Screws all the way,
they must be tightened after assembly to the Chassis is complete to
ensure proper alignment.
•
•
•
Once the Servo Mounts are secured to the Chassis, ensure the Servo
Horn is as close as can be to the center of the Chassis and tighten the
four 4-40 x 3/8” Cap Head Screws.
It is recommended to route your servo wire directly behind the servo
and between your Servo Mount and the Inner Pivot on the right side
of the car.
•
•
BAG E
BAG E
Servo Assembly
STEP E-01

Servo Installation
STEP E-02

.215”
x1
A6025
4-40 x 1/2”
x4
A6204
#4 x 0.030”
x4
A6350
4-40 x 3/8”
x2
A6210

15
A1548
Steering Rack Bushing
Servo Saver Nut
A1546
Servo Saver Spring
A1546
Servo Saver Tube
A1546
A1547
Servo Saver Arm
Servo Saver Bellcrank
Steering Rack
A1548 Driven Bellcrank
A1547
A1547
A1547
Driving Bellcrank
1
Center Body Post
A4239
Top Deck, 2.75mm
A4304
Steering Post
A1549
2
A1547
Rod End, Short
(23.32mm)
(.918in)
Warning! Using the optional Driving
Bellcrank instead of the Servo Saver
will make your Servo more suscepti-
ble to damage from impact.
•
When installing the two 4-40 x 3/16”
Button Head Screws to secure the
steering assembly, ensure the assembly
rotates freely. It may be necessary to
back off the Screws slightly to get free
movement. *Note: Only apply a small
amount of Loctite to these Screws.
•
BAG E
BAG E
Steering Assembly
STEP E-03

Top Deck Assembly
STEP E-04

4mm x 7mm
x4
A6917
4-40 x 3/16”
x2
A6257
.215”
x3
A6025
1
2
4-40 x 1/4”
x2
A6234
4-40 x 3/8”
x1
A6229
4-40 x 5/16”
x1
A6248
4-40 x 3/16”
x2
A6257

16
1
Right
Chassis Support,
A4331
Left
2
A4331
Chassis Support,
3
Do Not completely tighten the 4-40 x
1/4” Flat Head Screws all the way un-
til the Battery Tray is installed in a later
Step.
Re-check the Front Belt tension after in-
stalling the Top Deck.
•
•
BAG E
BAG E
Top Deck Installation
STEP E-05

Completed Bag E Assembly
STEP E-06

4-40 x 1/4”
x4
A6234
1
2
3
4-40 x 1/4”
x8
A6213

17
3
Body Post, Front
A4239
Upper Bumper
A4239
Lower Bumper
A4239
Foam Bumper
1
2
A4234
4
A4004
Double-Sided Tape
Antenna Tip Cover
A4003
Antenna Tube
A4006
Antenna Mount
A4006
Receiver
(NOT SUPPLIED)
There are three Antenna Mount mounting positions to
allow for different sized receivers and length anten-
nas. Use the hole appropriate to the size receiver being
used.
After inserting the antenna wire into theAntenna Mount,
cut the length of theAntenna Tube so that approximate-
ly 1/4” of antenna sticks out of the Antenna Tube when
installed.
In order to obtain the most centralized weighting of the
chassis, it is recommended to switch mounting sides for
the receiver and ESC if you are using a brushless sys-
tem. This allows for the ESC to be placed closer to the
center of the chassis without the belt in the way. Use
caution to keep the wires going to the receiver away
from the belt.
•
•
•
BAG F
BAG F
Bumper Assembly & Installation
STEP F-01

Receiver Installation
STEP F-02

1
2
3
4
4-40 x 3/8”
x4
A6210
4-40 x 1/4”
x4
A6213
4-40 x 1/8”
x1
A6227
4-40 x 3/8”
x1
A6210
L 4-40 x 3/16”
x1
A6306