CROSSRC BT8 User manual

1. The spraying and bonding process to body shall be carried out in a ventilated place, and safety masks shall be worn.
2. Please notice to the use of different glues when assembling the vehicle body: the vehicle shell is made of ABS material,
please use ABS special glue; The window and lamp are made of acrylic material. Please use less corrosive transparent glue
or special glue for the model.
3. Please make clean on the bonding surface before bonding the ABS plastic body, and there shall be no paint on the bonding
surface. After applying ABS glue to the two adhesives, apply pressure for 10 seconds to fully bond them.
4. Please conduct simulated assembly to determine the sequence of component before bonding or spraying.
5. For the wiring diagram of electronic equipment, please refer to the description on page 76 of the manual; Please conduct
power commissioning when the wheels are suspended.
6. This product is a high-precision model. Please read this manual carefully before assembly and assemble in strict accordance
with this manual.
7. Screw thread sealant shall be used during assembly. Please noted that the screw thread sealant shall not have any contact
with the shell parts. The screw thread sealant and ABS materials will produce chemical reaction, which will embrittle and
crack the shell.
8. It is recommended to use professional tools for installation. Please pay attention to the safety when use tools.
Electronic equipment requirements and recommendations:
BT8 Assembly Instruction
Equipment Specification Remark
Remotes 8 channels or Up Waterproof connector is
recommended
Servo
Steering servo：≥30KG*2 HV High pressure standard steering
gear in waterproof
Shift servo：≥10KG*1 Standard steering
E S C Continuous current ≥ 80A*2 ESC BEC output>3A
Brush motor Brush motor 560 38T *1
Brush motor 540 35T *1 The Max. Size: Ø39mm*65mm
Installation hole spacing: 25mm
Brushless motor ≤2100KV
Motor gear M0.8 Model 11-15 gear M0.8 Model ≠32P
UBEC Continuous current ≥ 10A
Suggest Servo to be
independently powered by
UBEC
Motor gear Total reduction ratio Environment
12T 1:46.5
1:18.8 Suitable for crossing and climbing
Gear reduction ratio range reference
11T 12T 13T 14T 15T
Low speed 50.7 46.5 42.9 39.8 37.2
High speed 20.5 18.8 17.4 16.1 15
Battery box inner size 135*170*29mm Battery box entry hole 135*58mm

4.0 5.5 7.0
Electronic equipment
THREAD
LOCK
CAUTION
GLUE
PAINT
(Not included)
TOOLS
(Not included)
ABS
CEMENT
To prevent serious personal injury and/or property damage,operate all remotely
controlled models in a responsible manner as outlined herein.
Safety Precautions
1.1 This radio-controlled model is not a toy, it is desi gned for persons 14 years of age or older.
1.2 Do not operate your vehicle on unsafe terrain; always pay attention to your surroundings.
1.3 Never operate your vehicle on pu bl i c roadwa ys, around moving people, animals, or operating machinery.
1.4 Keep clear of power li nes and high-powered radio equipmen t to minimize radio frequency interference.
1.5 Since t h i s vehicle contains small com ponents, it may b e a choking hazard for small children. Keep the vehicle and
any spare pa r t s out of reach of small children.
Inspect your radio-controlled model before operation
2.1 Ensure that all screws are properly tightened. Use thread-lock to secure any metal to metal contacts- especially for components designed to withstand
torque (servo mounts, motor mount, drive shaft grub screws etc.).
2.2 Always check the battery voltage for both the transmitter and vehicle prior to operating your vehicle. Keep the batteries fresh in the transmitter and
always begin your vehicle runs with a fully charged battery pack.
2.3 Always check that the motor and servo are operating smoothly and in the right direction prior to operation. If binding between components is observed,
replace parts as necessary to reduce possibility of component or servo damage.
2.4 To turn on your vehicle, always power on your transmitter first, then power on your receiver.
After operating your radio-controlled model
3.1 To turn off the vehicle, always power off your receiver prior to powering off your transmitter.
3.2 Use caution when handling the vehicle- components, especially the ESC and motor which will be hot after operation.
3.3 Never use battery packs which are dented or otherwise damaged. Ensure that the wire insulation is intact and that connectors are properly soldered.
Lithium batteries can become fire hazards if mishandled.
1

2
2181
2182
2198
X 1
X 1
X 1

3
2187 2197
2237 2193
2196 2192
X 1 X 1
X 1 X 1
X 1 X 1

4
2186 2195
2238 2188
2184
X 1 X 1
X 1 X 1
X 1

5
2194
2189
X 1
X 1

6
2236
2185
X 1
X 1

7
218312 218319 218354
218301
218310 218349 218317
218315
218314218352218307218353218305218351218304218348
218345
218337 218339 218338 218338 218347 218316 218320 218321
218308
218302
218315
218333 218335 218336 218336 218340 218340 218324 218322 218309 218311 218323 218318
218350
218329218334218331218344218344218343218343218327218327218306218355218303218313218356
218325 218326 218328 218332 218332 218330 218341 218342 218357 218346
2183
X 1

223904
223901 223902223903
X 3
X 2
8
2239
2105
210
X 1
21004
21005 21006
21008
21009

9
35201
41528
41529
4153041577 41578
94044
43319
43320
BAG B
BAG C
73086
BAG D
44149
BAG E
91160 91159
35202 41527
91189
S4.5M-225-10 S4.5M-324-10 S2M-122-4
BAG A

10
BAG F
35105 35106
BAG G
35101 35102
35103
35104
35107 35110 35114 35115 35117
35111 35112 35113
41513
33701
35108 35109
44150
35116
BAG H
44204 44108
44205
44206
44201
44202
44203

11
BAG I
71274 71275 73090
41104 41145 41205
41336 41393 41413
41451 41659 41660
41661
41662
41664
41670
BAG J
41673 41807 41810
41666
5 7.8 5 11 5.5 6
10.5
19
71278 73089
71277 73088 71276 73087
41665 41667
94068 41144 41812 41685 41677
44091 41808
41804 41668 41669
41826
41827
41832
10
7
8
7
7.5
7
41833
4.5
2.6
10
12

12
BAG K
41676
41671 41686
41674 41678 41675
25mm
41683
41408
41680
41682
41679
41681
41684
41672
41809
41687
68mm
95mm
106.7mm
110.1mm
110.8mm
113.3mm
140mm
177mm
41811

71211 71212 41806
41324 41390 41307
41598
13
BAG L
BAG M BAG N
50043
BAG O
BAG P
15003 15004 15005
Ø5xØ10x4
Ø10xØ15x4
Ø15xØ24x5
10
15
41658 41592
41593 41595
41596
41599 41817
41597
41657
41594
95066
42325
41814 41815
41813
Ø0.5*4*25 Ø0.2*4.5*23 Ø0.3*4.3*22 Ø0.5*6*10 Ø0.6*8.5*25
41828
Ø0.5*6.2*24
41829
Ø0.3*4*16
94063
94062
1.5
1.5
41209
10
2
41830 41831
16-S4.5M 18-S2M 44-S2M

11306
M3x10
11316
M2.5x10
11315
M2.5x6
11317
M3x12
11308
M3x16
11302
M3x6
11708
M1.6x4
12107
M1.6
12102
M2
12002
M2x10
12001
M2x6
11228
M2.5x12
11216
M2.5x6
11227
M2.5x8
12205
M2.5
12206
M2
11101
M2x4
11107
M3x10
11207
M3x10
11108
M3x12
11208
M3x12
11109
M3x14
11209
M3x14
11601
M3x16
11111
M3x18
11211
M3x18
11112
M3x20
11212
M3x20
11105
M3x6
11205
M3x6
11106
M3x8
11206
M3x8
12103
M3
12303
M3
12203
M3
11407
M3x16
11412
M3x3
11401
M3x4
12204
M4
11409
M4x11
11802
ST1.4x4
11603
M3x8
14
BAG Q
11318
M3x18
11231
M3x6
11232
M3x16
11903
M3x10
12401
M4
11906
M3x8
11322
M3x10
11323
M3x8
11907
M3x6
11410
M3x6

72003 72007
72008
72026
72029
41663
13002 13003 13004
14102
17001 17003 17006 17008 17011 17012
13007
17017 170181701917020 17021
15
BAG R
Ø5xØ8x0.5 X16 Ø5xØ8x0.3 X10
Ø10.2xØ13.5x0.2 X1
Ø5xØ8x0.2 X8
Ø12xØ17x1 X1
Ø5xØ7x1 X15
Ø3.8xØ9.2x0.6 X47 Ø2.5xØ6x0.4 X2 Ø2xØ5.5x0.4 X1
Ø3xØ7x0.5 X36
Ø11xØ13.6x1 X1
Ø8xØ6x1 X12 Ø10xØ7x1.5 X1 Ø8xØ5x1.5 X2 Ø7xØ5x1 X32 Ø5xØ2x1.5 X24 Ø6xØ4x1 X12
Ø17xØ15x1 X2
Ø26xØ24x1 X1
Ø17xØ14x1.5 X1
Ø6.5xØ4.5x1 X4
Ø20xØ17x1.5 X2
BAG S
50050 50049
BAG T
50048
17024
Ø5xØ3x1 X36
17025
Ø9xØ7x1 X2

91157 91158
64901
94056
16
BAG U
BAG V
87125 87124
87126
88003 88004
91155
10624 10638 10639 91154 13101
94012(Ø3.0)
BAG W
91075
GREASE 400357 94027 95024
7mm
5.5mm
1.5 2.0 2.5 400272
400273
400274
+_
s+_
CH1
s+_
+_
+_
+_
87007 97400639
UBEC
86119
87077
N20 N30
87134
+
86067
86085
10602

17
1BAG/B-C-Q
11315
43319
43320 44149
11315
M2.5x6
THREAD
LOCK

3
18
2
71274
71274
11205
M3x6
11205
11205
11205
11205
1
1
2
2
3
4
5
5
55
11410
M3x6
91160
91160
44202
41817
41817
41593
15003
72007
13002
11410
11410
STEP:1---2---3---4---5
THREAD
LOCK
THREAD
LOCK
Ø5xØ10x4
Ø5xØ8x0.3
15003
72007
Ø3.8xØ9.2x0.6
13002
BAG/I-Q
BAG/E-H-L-P-Q-S

5
19
4
1
2
3
4
4
4
4
1
2
3
4
41209
17006
15003
72026
35201
15003
17018
44205
11315
M2.5x6
11315
STEP:1---2---3---4
41594
41209
15003
17019
11315
219103
17017
17006
15003
72026
72007
35202
11315
STEP:1---2---3---4
BAG/A-H-P-Q-R-T
Ø5xØ10x4
15003
Ø5xØ8x0.2
72026
Ø8xØ5x1.5
17006
Ø26xØ24x1
17018
10
2
41209
Ø2x10
Ø5xØ8x0.3
72007
Ø17xØ15x1
17017
Ø17xØ14x1.5
17019
THREAD
LOCK
BAG/A-H-L-P-Q-R-T