Duratrax 835E User manual

141 Shock Seal Retainer.................DTXC8947, DTXC8938,
DTXC8939
142 Front Shock Boot ......................DTXC8944, DTXC8938
143 Rear Shock Boot.......................DTXC8944, DTXC8939
144 Rear Shock Spring....................DTXC8941, DTXC8939
145 Rear Shock End........................DTXC8945, DTXC8939
146 Front Sway Bar .............................................DTXC9607
147 Rear Sway Bar..............................................DTXC9608
148 Sway Bar Retainer....................DTXC9607, DTXC9608,
DTXC6831
149 Sway Bar End Pivot ..................DTXC9607, DTXC9608
150 Sway Bar Ball End ....................DTXC9607, DTXC9608
151 Rear Hub Spacer......................................... DTXC8094
152 3x40mm Screw Pin.......................................DTXC8601
153 3x45mm Screw Pin.......................................DTXC8601
155 4x37mm Screw Pin................... DTXC8601, DTXC6831
156 4x62mm Screw Pin................... DTXC8601, DTXC6831
157 4x70mm Screw Pin.......................................DTXC8601
158 3mm Ball...................................DTXC9447, DTXC8945
159 3mm Stand-Off Ball ......................................DTXC9634
160 Ball Nut .....................................DTXC6191, DTXC9339
161 Wheel............................................................DTXC9795
162 Tire................................................................DTXC9795
163 Foam Tire Insert ...........................................DTXC9795
164 Antenna Tube............................ DTXC6161, DTXC8397
168 3x8mm Ball (Tall) ......................DTXC6191, DTXC9340
169 3x8mm Ball (Short)...................DTXC6191, DTXC9339
170 Shock O-Ring Spacer (Thick) ...DTXC8945, DTXC8938,
DTXC8939
171 Shock Shaft Guide....................DTXC8945, DTXC8938,
DTXC8939
HARDWARE
B8x16mm Ball Bearing ...................................DTXC1585
C6x10mm Bushing..........................................DTXC6781
D3x8mm Button Head Hex Screw...................TKPQ0201
E3x10mm Button Head Hex Screw.................TKPQ0202
F3x12mm Button Head Hex Screw................ DTXQ5060
H3x16mm Button Head Hex Screw.................TKPQ0205
J3x18mm Button Head Hex Screw.................TKPQ0206
K3x22mm Button Head Hex Screw.................DTXC8652
L4x12mm Button Head Hex Screw.................TKPQ0222
M4x20mm Button Head Hex Screw.................DTXC8657
N3x6mm Button Head Screw..........................DTXC4390
Q3x10mm Flat Head Hex Screw .....................TKPQ0102
R3x12mm Flat Head Hex Screw .....................TKPQ0103
T4x12mm Flat Head Hex Screw .....................TKPQ0122
U4x14mm Flat Head Hex Screw .....................TKPQ0123
V4x8mm Flat Head Hex Screw .......................TKPQ0120
W3x12mm Cap Screw .................................... DTXQ0285
X3x20mm Socket Head Screw....................... DTXQ0286
Y3x30mm Socket Head Screw........................DTXQ0287
Z3x3mm Set Screw.........................................DTXC8660
AA 3x10mm Set Screw.......................................DTXC8661
BB 4x5mm Set Screw........................................ DTXQ0305
CC 4x12mm Set Screw...................................... DTXQ0305
DD 3x8mm Washer.............................................DTXC9763
EE 4x7mm Washer.............................................DTXC8697
FF 6x13x0.1mm Washer ....................................DTXC8698
GG 3x6mm Washer.............................................DTXC8694
HH 3mm Locknut ................................................DTXC8240
JJ 4mm Locknut ................................................TKPQ1004
KK Body Clip (Large)..........................................DTXC6472
LL Body Clip (Small)..........................................DTXC6442
NN 5x4mm Set Screw.........................................DTXQ0307
PP 6x13x0.5mm Washer ....................................DTXC8698
DTXD78Mnl
© 2013 Hobbico, Inc. All rights reserved.

57
56 65
64
158
158
54
159
62
60
59
58
60
59
52
55
51
51
129
135
109
107
124
124
124
168
18 19
106
106
17
19
18 168
107
161
163
162
109
117
113
118
118
112
116
116
120
120
120
120
121
121
122
122
122
122
119
115
114
114
117
48
36
139 139
139 139
17
136
137 Front
138 Rear
127 Front
128 Rear
142 Front
143 Rear
134 Front
144 Rear
133 Front
145 Rear
131
130
171
141
132
139
170
140
108
14
124
12
152 9
45
32
33
27
63
159
63
62
53
64
63
63
159
159
126
150
150
148
61
152
152
5
11
122
122
46
46
46
153
10
29
4
111
5
110
104
35
3
110
26
125
158
148 149
111
66
125
2
119
119
119
47
28
103
1
34
126
158
152
24
4
146
23
158
158
156
156 157
157
155
155
9
13
116
115
116
121
121
122
122
108
149
150
150
8
50
730
31
153
148
160
125
25
44
126
126
37
155
155
43
157 156
149
150
150
150
148
156
153
158
158
125
160
157
6
109
107
16
151
123
149 147
158
20
20
22
22
21
42
39
41
43
40
38
38
105
139
158
105
139123
15
151
107
164
49
108
151
150
151
108
109
169
21
43
169
10
102
HH
HH
HH
H
H
F
F
C
C
C
C
L
R
R
K
K
E
B
R
GG
W
R
LL
HH
EE
HH
NN
B
Y
HH
D
K
HH
M
FFF
HH
Y
E
E
D
CC
DD
HH
J
E
D
K
L
L
DD
AA
B
U
CC
DD
Y
N
G
HH
GG
W
J
J
ZD
X
X
DD
HH
DD
F
F
F
K
CC
CC
HH
B
J
JJ
BB
HH
K
L
L
HH
HH
DD
HH
HH
B
B
B
B
R
R
EE
EE
EE
EE PP
FF
NN
B
B
K
U
U
HH
M
E
L
T
V
V
T
T
V
T
T
BB
T
TT
EE
B
B
K
EJJ
JJ
JJ
E
NN
NN
L
NN
B
H
HH
L
Z
Z
U
U
U
HH Q
U
U
HH
HH
HH
HH HH
Z
E
AA
AA
EE
PP
R
R
R
R
R
R
EE
EE
BB
FF
Q
Q
QQ
Q
Q
NN HH
H
H
QQ
QQ
FF
FF
EE
E
E
JJ
JJ
JJ
JJ
JJ
JJ
HH
H
B
B
FF
KK
KK
L
L
L
Y
B
AA
HH
E
HH
HH
HH
HH
DD
Q
Q
Q
TABLE OF CONTENTS
CONTENTS
REQUIRES
Chassis
(Battery not included)
Transmitter
Antenna
Tube
Duratrax Onyx 235
AC/DC Charger w/Balancing
(DTXP4235)
“AA” Alkaline Batteries x4
(Transmitter)
TrakPower LiPo 4S 14.8V 5600mAh 60C Battery
(TKPC20450)
2
2
SAFETY PRECAUTIONS AND WARRANTY...............3 TUNING GUIDE ........................................................8
PREPARE TO RUN THE 835E...................................4 ASSEMBLY GUIDE .................................................11
ESC SETUP ..............................................................6 REPLACEMENT PARTS..........................................36

3
3
SPECIFICATIONS & DESCRIPTION CHANGES
All information found in this manual is subject to change without notice. Visit Duratrax.com for the latest updates and information on your
model. Duratrax maintains no responsibility for inadvertent errors in this manual.
SAFETY PRECAUTIONS
To prevent injury and damage to property, follow these safety precautions when operating any radio control vehicle.
Keep all spectators a safe distance away from the vehicle.
ALWAYS turn the transmitter on before the receiver.
ALWAYS disconnect the battery from the ESC when finished running.
Use a mat or towel when working on your model to protect your work surface.
Do NOT run your radio control vehicle in cold weather as plastic parts may become brittle.
LIMITED WARRANTY
Duratrax guarantees this kit to be free from defects
in materials or workmanship for 90 days after the
date of purchase. Duratrax will repair or replace at
no charge any incorrectly made part.
Your receipt or invoice at time of purchase is your
proof of purchase and is required for Duratrax to
honor any warranty. Duratrax reserves the right to
change or modify this warranty without notice.
For warranty repairs, contact or send to:
Hobby Services
3002 N. Apollo Drive Suite 1
Champaign, IL 61822
ATTN: Service Department
Phone: [phone]
9:00 am – 5:00 pm Central Time M-F
E-mail: [email protected]
www.hobbyservices.com
If the buyer is not prepared to accept the liability
associated with the use of this product, the buyer
is advised to return the kit immediately in new and
unused condition to the place of purchase.
STRESS-TECH PARTS GUARANTEE
Stress-Tech parts are guaranteed for 12 months from the date of purchase.
Check the parts list for items covered under the Stress-Tech guarantee.
Should a Stress-Tech part break during the first 12 months after purchase,
return the part to Hobby Services and we will send you a FREE replacement.
To receive your FREE replacement Stress-Tech part, include the following and
return to Hobby Services at the address above:
1. Broken part
2. Part number and description of the broken part
3. COPY of your dated purchase invoice or receipt
4. Name, phone number and shipping address
TM
REPAIR SERVICE
Hobby Services offers repair services after the 90 day limited warranty or 12
month Stress-Tech parts replacement for a minimal charge.
Follow these instructions for your repair request:
1. Most circumstances require the return of the ENTIRE vehicle. STRESS-TECH
requires ONLY the broken part to be returned following the instructions above.
2. Turn off the transmitter and remove the batteries.
3. Disconnect battery from ESC.
4. Include written instructions listing ALL items being returned with a
THOROUGH description of the problem, service needed and your DAYTIME
phone number. IF you expect the repair to be covered under the 90 day
limited warranty, include copy of receipt or invoice with date of purchase.
5. Send to Hobby Services at the address above. When shipping your item(s)
to us, we recommend that you insure them and use a company that offers
tracking service (such as UPS or Federal Express).
We will carefully inspect your item and notify you of our findings. You will be
advised of your options for return, repair, or replacement. Please note that
items sent back unrepaired will carry a return shipping and service charge.
Hobby Services accepts Visa®, MasterCard®, or you can send a check. We can
return the item C.O.D., but additional charges will apply.

4
4
2S 3S 4S 5S 6S
CHARGER
4S LIPO BATTERY
1
1
2
2
+
–
NR
ST
NR
TH
BIND
ST-D/RTH-TRIMST-TRIM
Throttle
Reversing
Switch
Steering
Reversing
Switch
Steering
Trim Throttle
Trim
Steering
Dual Rate
Forward
Reverse
For
w
a
r
d
R
4
4
3
3
6
6
5
5
4
4
CHARGE THE LIPO
BATTERY
INSTALL TRANSMITTER
BATTERIES
INSTALL RECEIVER
ANTENNA TUBE
FAILSAFE INSTALL/CONNECT LIPO
BATTERY TO ESC
CHECK TRANSMITTER
Note: Never leave a charging
battery unattended! If the
battery swells or becomes
hot, disconnect immediately!
Note: ALWAYS turn on your transmitter
then your ESC. When finished ALWAYS
turn off your ESC then your transmitter.
Charge your battery
per the manufacturer’s
specifications.
Install (4) AA batteries.
Important: When not
in use, disconnect your
battery from the ESC.
Route the antenna.
To set:
1. Power up the transmitter and receiver.
2. Hold the buggy so the wheels are off the ground and clear
of all objects.
3. With the transmitter throttle in neutral, press the failsafe set
button on the receiver. The receiver LED will flash to indicate
a new failsafe point
has been set.
The R240FS receiver has a build in failsafe. If the
receiver loses contact with the transmitter, it will
automatically return the throttle to a preset point.
Failsafe Set
Button

5
5
NR
ST NR
TH
BIND
ST-D/RTH-TRIMST-TRIM
7
7
5
5
RE-BINDING THE TRANSMITTER
TO THE RECEIVER
Your radio system is preset at the factory. If you
need to re-bind your system, follow these steps.
1. Insert the bind plug into
channel 3 on the receiver.
2. Turn on the ESC. The receiver
LED should start blinking.
Receiver LED
Bind Plug
Transmitter
Bind Button
ESC LED
3. Press and hold down the transmitter’s bind button and turn
the transmitter on. The receiver LED will stop blinking.
4. Turn off the ESC and transmitter and remove
the bind plug from the receiver.

6
6
ESC INSTRUCTIONS
SPECIAL FEATURES:
SPECIAL FEATURES:
●
Completely waterproof and dustproof.
Completely waterproof and dustproof.
●
Excellent start-up, acceleration and linearity features, suitable for
Excellent start-up, acceleration and linearity features, suitable for
buggies, trucks and short course vehicles.
buggies, trucks and short course vehicles.
●
Multiple protection modes: low voltage cut-off, thermal, throttle
Multiple protection modes: low voltage cut-off, thermal, throttle
signal loss and motor blocked protections.
signal loss and motor blocked protections.
●
Powerful 6V/3A BEC.
Powerful 6V/3A BEC.
●
Easy manual programming through the SET button located on the switch
Easy manual programming through the SET button located on the switch
and also compatible with the Onyx Programming Card (DTXM1352).
and also compatible with the Onyx Programming Card (DTXM1352).
●
Special programming port for connecting to Programming Card
Special programming port for connecting to Programming Card
eliminates the need to remove the receiver lead.
eliminates the need to remove the receiver lead.
THROTTLE CALIBRATION:
THROTTLE CALIBRATION:
Warning:
Warning:
Prior to throttle calibration, be sure that all trims
Prior to throttle calibration, be sure that all trims
and sub-trims are at zero. Failure to do so could result in
and sub-trims are at zero. Failure to do so could result in
improper calibration.
improper calibration.
1. Turn the transmitter on and set its throttle and brake EPA (End Point
1. Turn the transmitter on and set its throttle and brake EPA (End Point
Adjustment) to maximum.
Adjustment) to maximum.
2. Hold the SET button located on the ESC power switch and turn the ESC
2. Hold the SET button located on the ESC power switch and turn the ESC
on. Release the SET button as soon as the red LED flashes on the ESC and
on. Release the SET button as soon as the red LED flashes on the ESC and
the motor beeps.
the motor beeps.
3. With the red LED flashing, ensure that the Tx throttle is at neutral and all
3. With the red LED flashing, ensure that the Tx throttle is at neutral and all
trims and sub-trims are at zero. After confirmation, press the SET button.
trims and sub-trims are at zero. After confirmation, press the SET button.
The ESC will confirm the neutral setting has been completed by beeping
The ESC will confirm the neutral setting has been completed by beeping
one time and flashing the green LED once.
one time and flashing the green LED once.
4. Move the trigger to the full throttle position and press the SET button.
4. Move the trigger to the full throttle position and press the SET button.
The green LED will flash two times and the motor will beep twice to
The green LED will flash two times and the motor will beep twice to
confirm that the setting has been made.
confirm that the setting has been made.
5. Push the trigger to the full brake position and press the SET button.
5. Push the trigger to the full brake position and press the SET button.
The green LED will flash three times and the motor will beep three times
The green LED will flash three times and the motor will beep three times
to confirm that the setting has been made. The trigger may be released
to confirm that the setting has been made. The trigger may be released
to neutral at this time. A second group of flashes by the green LED will
to neutral at this time. A second group of flashes by the green LED will
confirm that throttle calibration has been completed properly and the ESC
confirm that throttle calibration has been completed properly and the ESC
is ready for use.
is ready for use.
LED indication in Normal Running mode:
LED indication in Normal Running mode:
A. Neutral – No LED indication.
A. Neutral – No LED indication.
B. Forward or Reverse – Indicated by a red LED.
B. Forward or Reverse – Indicated by a red LED.
C. Full Throttle – Indicated by green and red LED.
C. Full Throttle – Indicated by green and red LED.
PROGRAMMABLE SETTINGS:
PROGRAMMABLE SETTINGS:
Running Mode:
Running Mode:
In “Forward with Brake” the car can go forward and brake,
In “Forward with Brake” the car can go forward and brake,
but will not run in reverse. This setting is mainly used for competition
but will not run in reverse. This setting is mainly used for competition
where reverse should be disabled. “Forward/Reverse with Brake” mode
where reverse should be disabled. “Forward/Reverse with Brake” mode
provides reverse, which is suitable for practice or everyday driving.
provides reverse, which is suitable for practice or everyday driving.
Note:
Note:
“Forward/Reverse with Brake” mode uses a double brake
“Forward/Reverse with Brake” mode uses a double brake
input to enable reverse. This means that in order to activate reverse,
input to enable reverse. This means that in order to activate reverse,
the throttle trigger must be pushed forward twice before reverse
the throttle trigger must be pushed forward twice before reverse
is enabled. The first push will activate the brake. The second push
is enabled. The first push will activate the brake. The second push
will enable reverse.
will enable reverse.
“Forward/Reverse” mode is forward and reverse only. The car will go to
“Forward/Reverse” mode is forward and reverse only. The car will go to
reverse immediately once the trigger is pushed to the full brake position.
reverse immediately once the trigger is pushed to the full brake position.
Drag Brake:
Drag Brake:
Sets the amount of brake applied at neutral throttle to
Sets the amount of brake applied at neutral throttle to
simulate the slight braking effect at the neutral position.
simulate the slight braking effect at the neutral position.
Low Voltage Cut-off:
Low Voltage Cut-off:
Prevents the lithium battery pack from over
Prevents the lithium battery pack from over
discharging. The ESC monitors the battery’s voltage at all times. If the
discharging. The ESC monitors the battery’s voltage at all times. If the
voltage is lower than the threshold for 2 seconds, the output power will be
voltage is lower than the threshold for 2 seconds, the output power will be
cut off, and the red LED will flash twice in sets of three.
cut off, and the red LED will flash twice in sets of three.
Start Mode (also referred to as “Punch”):
Start Mode (also referred to as “Punch”):
Select from “Level 1” to
Select from “Level 1” to
“Level 9”. Level 1 has a very soft start effect, while Level 9 has a very
“Level 9”. Level 1 has a very soft start effect, while Level 9 has a very
aggressive start effect.
aggressive start effect.
Note:
Note:
To use Level 7 through 9, you must use a good quality
To use Level 7 through 9, you must use a good quality
battery pack with a powerful discharge ability. Otherwise these
battery pack with a powerful discharge ability. Otherwise these
modes cannot get the burst start effect as you want. If the motor
modes cannot get the burst start effect as you want. If the motor
cannot run smoothly (the motor is stuttering), it may be the weak
cannot run smoothly (the motor is stuttering), it may be the weak
discharge ability of the battery pack. Choose a better battery pack
discharge ability of the battery pack. Choose a better battery pack
or reduce the gear ratio.
or reduce the gear ratio.
Maximum Brake Force:
Maximum Brake Force:
The ESC provides proportional brake function.
The ESC provides proportional brake function.
The brake force is related to the position of the throttle trigger. Maximum
The brake force is related to the position of the throttle trigger. Maximum
brake force refers to the force when the throttle is located at the end point
brake force refers to the force when the throttle is located at the end point
of the backward zone. A very large brake force can shorten the brake time,
of the backward zone. A very large brake force can shorten the brake time,
but it may damage the gears. The “disable” option inhibits the inherent
but it may damage the gears. The “disable” option inhibits the inherent
brake function of the speed controller. When this option is selected, the
brake function of the speed controller. When this option is selected, the
brake function is realized by a traditional mechanical disc-brake system
brake function is realized by a traditional mechanical disc-brake system
driven by a servo.
driven by a servo.
Maximum Reverse Force:
Maximum Reverse Force:
Sets how much power will be applied in the
Sets how much power will be applied in the
reverse direction. Different value makes different reverse speed.
reverse direction. Different value makes different reverse speed.
Initial Brake Force:
Initial Brake Force:
It is also called “minimum brake force” and refers to
It is also called “minimum brake force” and refers to
the force when the throttle is located at the initial position of the brake.
the force when the throttle is located at the initial position of the brake.
The default value is equal to the drag brake setting so the brake effect can
The default value is equal to the drag brake setting so the brake effect can
be very smooth.
be very smooth.
Throttle Neutral Range:
Throttle Neutral Range:
The amount of travel in the trigger between
The amount of travel in the trigger between
neutral and brake, and between neutral and throttle.
neutral and brake, and between neutral and throttle.
Timing:
Timing:
0° of advance is the lowest setting resulting in more torque, less
0° of advance is the lowest setting resulting in more torque, less
RPM, least motor heat, but longest run times. Turning the timing up to the
RPM, least motor heat, but longest run times. Turning the timing up to the
highest setting will do just the opposite.
highest setting will do just the opposite.
Thermal Protection:
Thermal Protection:
Protects the ESC from damage occurring by
Protects the ESC from damage occurring by
excessive heat.
excessive heat.
Motor Rotation:
Motor Rotation:
Changes the direction that the motor turns.
Changes the direction that the motor turns.
LiPo Cells:
LiPo Cells:
Must be set to correspond to the number of LiPo cells being
Must be set to correspond to the number of LiPo cells being
used in application. If you are using a discharged 4S battery, the ESC may
used in application. If you are using a discharged 4S battery, the ESC may
mistakenly measure it as a fully charged 3S battery and then the LVC
mistakenly measure it as a fully charged 3S battery and then the LVC
protection function will be incorrect. Always be sure to use a fully charged
protection function will be incorrect. Always be sure to use a fully charged
LiPo when using the “Auto Calculate” setting.
LiPo when using the “Auto Calculate” setting.
Note:
Note:
To reset all programming to its default value, hold the SET button for
To reset all programming to its default value, hold the SET button for
3 seconds while the trigger is at neutral. The red and green LEDs will flash
3 seconds while the trigger is at neutral. The red and green LEDs will flash
at the same time confirming the settings have been changed to default.
at the same time confirming the settings have been changed to default.
SPECIFICATIONS:
SPECIFICATIONS:
Motor:
Motor:
kV: 2200
kV: 2200
Input Voltage: 3-4S
Input Voltage: 3-4S
Connectors: 4mm Male Bullet
Connectors: 4mm Male Bullet
Pole: 4
Pole: 4
Shaft Diameter: 5mm
Shaft Diameter: 5mm
Dimension: 39.8mm x 73.8mm
Dimension: 39.8mm x 73.8mm
Weight: 374g
Weight: 374g
ESC:
ESC:
Cont./Burst Current: 120A / 760A
Cont./Burst Current: 120A / 760A
Motor Type: Sensorless Brushless
Motor Type: Sensorless Brushless
Motor Limit: 2S LiPo – kV
Motor Limit: 2S LiPo – kV


6000
6000
3S LiPo – kV
3S LiPo – kV


4000
4000
4S LiPo – kV
4S LiPo – kV


3000
3000
Resistance: 0.0004
Resistance: 0.0004

Battery: 2-4S LiPo
Battery: 2-4S LiPo
BEC Output: 6V/3A (Switching
BEC Output: 6V/3A (Switching
mode built in BEC)
mode built in BEC)
Dimension: 59.3 x 38.4 x 33.6mm
Dimension: 59.3 x 38.4 x 33.6mm
Weight: 110g (w/five 12AWG
Weight: 110g (w/five 12AWG
200mm wires
200mm wires
6
6

7
7
PROGRAMMING THE ESC:
PROGRAMMING THE ESC:
Programming of the ESC involves LED flashes and matching audible tones. Each LED indication and audible tone will represent a different
Programming of the ESC involves LED flashes and matching audible tones. Each LED indication and audible tone will represent a different
adjustable feature.
adjustable feature.
Below is a chart of programmable values that each setting can be changed with audible and LED indications for each feature. A “—” will
Below is a chart of programmable values that each setting can be changed with audible and LED indications for each feature. A “—” will
represent a long beep and flash, where a “•” will represent a short beep and flash.
represent a long beep and flash, where a “•” will represent a short beep and flash.
To program the ESC:
To program the ESC:
1. Turn on the transmitter.
1. Turn on the transmitter.
2. Press and hold the SET button on the
2. Press and hold the SET button on the
ESC and apply power. The red LED will flash
ESC and apply power. The red LED will flash
repeatedly for a few seconds. Continue to hold
repeatedly for a few seconds. Continue to hold
the SET button until the green LED starts to
the SET button until the green LED starts to
flash in a pattern according to the INDICATION
flash in a pattern according to the INDICATION
column in the chart.
column in the chart.
3. Release the SET button once the given
3. Release the SET button once the given
indication matches the feature to be adjusted.
indication matches the feature to be adjusted.
Example: Releasing the SET button when the
Example: Releasing the SET button when the
green LED and beep is long (—) will enter the
green LED and beep is long (—) will enter the
“Maximum Brake Force” feature.
“Maximum Brake Force” feature.
4. Once the feature to be changed is entered,
4. Once the feature to be changed is entered,
press the SET button to achieve the desired
press the SET button to achieve the desired
setting. The red LED will confirm the chosen
setting. The red LED will confirm the chosen
setting after pressing the SET button.
setting after pressing the SET button.
5. Turn the ESC off when completed.
5. Turn the ESC off when completed.
6. If you wish to change another feature,
6. If you wish to change another feature,
repeat the above steps.
repeat the above steps.
NOTE: The power to the ESC must be reset each time a feature is adjusted.
NOTE: The power to the ESC must be reset each time a feature is adjusted.
TROUBLESHOOTING:
TROUBLESHOOTING:
When the ESC is turned on, the LED and
When the ESC is turned on, the LED and
audible indications do not match that of
audible indications do not match that of
the connected LiPo battery:
the connected LiPo battery:
Battery is not
Battery is not
fully charged and the ESC is recognizing it
fully charged and the ESC is recognizing it
differently. Also, check that the “LiPo” cells
differently. Also, check that the “LiPo” cells
feature setting is correct.
feature setting is correct.
Red LED flashes twice, in sets of three:
Red LED flashes twice, in sets of three:
ESC
ESC
has reached low voltage cut-off. Disconnect
has reached low voltage cut-off. Disconnect
battery and recharge.
battery and recharge.
OPTIONAL:
OPTIONAL:
The optional hand-held Programming Card
The optional hand-held Programming Card
simplifies programming and allows for quick
simplifies programming and allows for quick
parameter adjustments. DTXM1352
parameter adjustments. DTXM1352
Forward
w/Brake Fwd/Rev w/Brake Forward & Reverse
0% 5% 10% 40%20% 60% 100%80%
3.2V/Cell3.0V/Cell 3.4V/Cell
Level1 Level2 Level3 Level5Level4 Level6 Level8Level7 Level9
25% 50% 75% Disable100%
25% 50% 75% 100%
=Drag Brake
Force 0% 20% 40%
6% (Narrow) 9% (Normal) 12% (Wide)
Counter
Clockwise Clockwise
Auto Calculate 2 Cells 3 Cells 4 Cells
0.00° 3.75° 7.50° 15.00°
Default settings
11.25° 18.75° 26.25°22.50°
Enable Disable
Running Mode
FEATURE
INDICATION
GREEN
LED
SETTINGS (RED LED)
Drag Brake Force
Low Voltage
Cut-Off Threshold
Timing (only for
sensorless motors)
Start Mode (Punch)
Max Brake Force
Max Rev Force
Initial Brake Force
Neutral Range
Motor Rotation
Heat Protection
LiPo Cells
23 5468791
Short (•) Long (—)
Short (•) Long (—)
Turn on Tx,
Hold ESC SET Button
END
Turn ESC
switch off
Turn on ESC
Red LED flashes 10 seconds,
then green LED flashes once
Find “running Mode” lisiting
on chart next to “s”
Change
the SETTING
for this
feature?
Release SET button,
then press SET again
Red LED flashes indicate
SETTING for this feature
See Chart
Press SET the appropriate
number of times to reach
desired setting per chart
Change
the SETTING
for this
feature?
Keep holding
SET button
2
3
4
5
6
7
8
9
10
11
12
Green LED flashes to next
increment for next FEATURE:
Drag Brake Force
Low Voltage Cutoff
Start Mode (Punch)
Max. Brake Force
Max. Reverse Force
Initial Brake Force
Neutral Width
Timing
Thermal Protection
Motor rotation
LiPo Cells
Programming the ESC with
the SET button on the ESC.
NO
YES
YES
NO
7
7

8
8
TUNING GUIDE
As a starting point, make sure your car has equal lengths on shocks, camber links and steering rods on both sides (left and right).
As a starting point, make sure your car has equal lengths on shocks, camber links and steering rods on both sides (left and right).
Front and rear do not need to be equal.
Front and rear do not need to be equal.
ACKERMAN
The difference in turning angle between the inside wheel and outside wheel in a turn.
Rear Hole:
Rear Hole: Less initial steering into a corner. Smoother steering
response. Better for large flowing tracks.
Forward Hole:
Forward Hole: More initial steering into corner. Steering is
more aggressive. Better for tight technical tracks.
CAMBER
Angle of the tire and wheel in relation to the ground when
viewed from the front.
Negative Camber
Negative Camber = Top of the tire and wheel lean inward (Typically 0° to -2°)
• Improved traction while corning.
• Adds overall stability.
Positive Camber
Positive Camber = Tire and wheel lean outward (NOT recommended).
FRONT TOE-IN AND TOE-OUT
Direction the wheels point in relationship with each other,
when viewed from the front.
Toe-Out:
Toe-Out: Fronts of the wheels point away from each other.
• Decreased stability when accelerating and increased steering
when entering a corner.
Toe-In:
Toe-In: Front of the
wheels point toward each
other. (Typically 0 to -2°)
• Increased stability when
accelerating. Decreased
steering when entering
a corner.
Toe-In
Toe-In
8
8
Rotate the collar on the shock to change ride height. Adjust left and right equally.
RIDE HEIGHT
Distance the chassis sits from the ground and how much weight is transferred when the vehicle changes speed and direction.
Lower Rear:
Lower Rear:
More rear traction but reduces steering.
More rear traction but reduces steering.
Lower Front:
Lower Front:
Increases steering but can
Increases steering but can
cause rear end to lose traction.
cause rear end to lose traction.

9
9
SHOCK ADJUSTMENTS
DROOP
Distance the chassis can lift from ride height before the wheels come off the ground.
More Front Droop:
More Front Droop:
Increases chassis up travel when on throttle and decreases high speed steering,
Increases chassis up travel when on throttle and decreases high speed steering,
making vehicle turn smoother. Good for low traction and bumpy surfaces.
making vehicle turn smoother. Good for low traction and bumpy surfaces.
Less Front Droop:
Less Front Droop:
Decreases chassis up travel when on throttle, making steering more aggressive.
Decreases chassis up travel when on throttle, making steering more aggressive.
Good for high speed smooth surfaces.
Good for high speed smooth surfaces.
More Rear Droop:
More Rear Droop:
Increases chassis up travel when off throttle and under braking. Increases
Increases chassis up travel when off throttle and under braking. Increases
steering in low speed corners and under braking.
steering in low speed corners and under braking.
Less Rear Droop:
Less Rear Droop:
Decreases steering in low speed corners, making the vehicle turn smoother.
Decreases steering in low speed corners, making the vehicle turn smoother.
9
9
ROLL CENTER
Point at which the vehicle rolls laterally when cornering.
Higher Roll Center:
Higher Roll Center:
Increases the chassis roll on the rear
Increases the chassis roll on the rear
of the car. Increases rear traction on-power. Decreases rear
of the car. Increases rear traction on-power. Decreases rear
traction during braking.
traction during braking.
Lower
Lower
Roll Center:
Roll Center:
Decreases the chassis roll at the rear of
Decreases the chassis roll at the rear of
the car. Decreases rear on-power traction. Reduces corner
the car. Decreases rear on-power traction. Reduces corner
entry steering. Increases corner exit steering.
entry steering. Increases corner exit steering.
Higher Roll Center:
Higher Roll Center:
Reduces chassis roll and on-power
Reduces chassis roll and on-power
steering. The car feels more responsive. Reduces front traction
steering. The car feels more responsive. Reduces front traction
going into corners. Good for high grip, technical tracks.
going into corners. Good for high grip, technical tracks.
Lower
Lower
Roll Cente
Roll Cente
r:
r:
Increases the chassis roll and on-power
Increases the chassis roll and on-power
steering. Steering is less responsive, but smoother and more
steering. Steering is less responsive, but smoother and more
stable. Better for smooth tracks with high speed corners.
stable. Better for smooth tracks with high speed corners.
FRONT ROLL CENTER
FRONT ROLL CENTER
REAR ROLL CENTER
REAR ROLL CENTER

10
10
10
10
CHASSIS MAINTENANCE TIPS
Check before every run:
Check before every run:
1. All hardware to be sure everything is tight.
1. All hardware to be sure everything is tight.
2. Transmitter batteries.
2. Transmitter batteries.
3. Moving parts are free from binding.
3. Moving parts are free from binding.
4. Parts are not broken or damaged.
4. Parts are not broken or damaged.
5. Wires are properly connected.
5. Wires are properly connected.
6. Remove dirt or debris from chassis and moving parts.
6. Remove dirt or debris from chassis and moving parts.
7. Bearings should roll smoothly.
7. Bearings should roll smoothly.
8. Shocks should operate smoothly. Check for leakage and refill as needed.
8. Shocks should operate smoothly. Check for leakage and refill as needed.
9. Gear mesh between the spur and pinion gears.
9. Gear mesh between the spur and pinion gears.
WHEELBASE
SHOCK OIL
DIFFERENTIAL OIL
Distance between the front and rear wheels.
Decreases off power steering. Better
Decreases off power steering. Better
through rough sections. More stable.
through rough sections. More stable.
More on power steering.
More on power steering.
Increases rear on power traction.
Increases rear on power traction.
More off power steering.
More off power steering.
Thinner:
Thinner:
Increased traction. Chassis transitions quicker. Increased chance of the chassis
Increased traction. Chassis transitions quicker. Increased chance of the chassis
bottoming out. Better for rough tracks.
bottoming out. Better for rough tracks.
Thicker:
Thicker:
Decreased traction. Chassis transitions slower. Decreased chance of chassis
Decreased traction. Chassis transitions slower. Decreased chance of chassis
bottoming out. Better for smooth tracks.
bottoming out. Better for smooth tracks.
FRONT:
FRONT:
Thinner:
Thinner:
Increased off power steering (too thin will make it inconsistent.) Decreased on power steering.
Increased off power steering (too thin will make it inconsistent.) Decreased on power steering.
Thicker:
Thicker:
Increased stability while braking into a corner. Increased on power steering exiting a corner.
Increased stability while braking into a corner. Increased on power steering exiting a corner.
CENTER:
CENTER:
Thinner:
Thinner:
Better for rough track conditions. Causes the front to unload under acceleration. Decreases on power steering.
Better for rough track conditions. Causes the front to unload under acceleration. Decreases on power steering.
Thicker:
Thicker:
Better acceleration. Increases on power steering. Less stable. Better for smooth high bite tracks.
Better acceleration. Increases on power steering. Less stable. Better for smooth high bite tracks.
REAR:
REAR:
Thinner:
Thinner:
More rear traction in the corners. Increases mid corner steering.
More rear traction in the corners. Increases mid corner steering.
Thicker:
Thicker:
Decreases rear traction in the corners. Increases forward traction. Less mid corner steering
Decreases rear traction in the corners. Increases forward traction. Less mid corner steering
SHORTER WHEELBASE
SHORTER WHEELBASE
MEDIUM WHEELBASE
MEDIUM WHEELBASE
LONGER WHEELBASE
LONGER WHEELBASE

11
11
FOR MAINTENANCE AND REPAIRS ON YOUR 835B
FOR MAINTENANCE AND REPAIRS ON YOUR 835B

12
12
B(x3)
8x16mm
BB (x3)
4x5mm
120 (x3)
2.5x13mm
FF (x3)
6x13mm
1
1
2
2
EE (x12)
4x7mm
3
3
B(x1)
8x16mm
BB (x1)
4x5mm
120 (x1)
2.5x13mm
PP (x1)
6x13x0.5mm

13
13
13
13
R(x12)
3x12mm
4
4
5
5
6
6
B(x1)
8x16mm
FF (x1)
6x13x0.1mm
120 (x1)
2.5x13mm
B(x2)
8x16mm
FF (x2)
6x13x0.1mm
120 (x2)
2.5x13mm

14
14
7
7
8
8
9
9
E(x2)
3x10mm
JJ (x4)
4mm
E(x1)
3x10mm
155 (x2)
4x37mm
156 (x2)
4x62mm
14
14
B(x2)
8x16mm
NN (x1)
5x4mm

15
15
15
15
10
10
11
11
12
12
L(x4)
4x12mm
NN (x2)
5x4mm
108 (x2)
2.5x16mm
B(x4)
8x16mm
E(x2)
3x10mm
L(x4)
4x12mm
Y(x2)
3x30mm

16
16
16
16
14
14
15
15
CC (x2)
4x12mm
168 (x2)
HH (x2)
3mm
13
13
152 (x2)
3x40mm
19 (x2)
5x30mm

17
17
16
16
17
17
18
18
K(x2)
3x22mm
HH (x2)
3mm
AA (x2)
3x10mm
158 (x2)
HH (x2)
3mm
JJ (x2)
4mm
152 (x2)
3x40mm
157 (x2)
4x70mm
FRONT
x2

18
18
20
20
21
21
Z(x2)
3x3mm
149 (x2)
D(x2)
3x8mm
19
19
J(x2)
3x18mm

19
19
23
23
24
24
B(x2)
8x16mm
E(x1)
3x10mm
E(x2)
3x10mm
JJ (x4)
4mm
22
22
155 (x2)
4x37mm
156 (x2)
4x62mm
NN (x1)
5x4mm

20
20
26
26
27
27
X(x2)
3x20mm
E(x1)
3x10mm
25
25
Y(x2)
3x30mm