Hobbytech 1.CRX.RTR, Instruction Manual, Page: 8 / 14

8
Thank you for purchasing this product! We strongly recommend reading through this user manual before use. Because we have no control over
the use, installation, or maintenance of this product, no liability may be assumed for any damage or losses resulting from the use of the product.
We do not assume responsibility for any losses caused by unauthorized modifications to our product. Besides, we have the right to modify our
product design, appearance, features and usage requirements without notification. We are only responsible for our product cost and nothing
else as result of using our product.
WARNINGS
• To avoid short circuits, ensure that all wires & connections must be well insulated and there is no issue like poor contact, sold joint exists
before connecting the ESC to related devices.
• Read through the manuals of all power devices and chassis and ensure the power configuration is rational before using this unit.
• To avoid accidents, we strongly recommend holding the vehicle in the air during the connecting and adjusting process.
• Stop immediate usage once the casing of the ESC exceeds 90°C/194°F as this may cause damages to both the ESC and motor.
• Users must always disconnect the batteries after use as the current on the ESC is consuming continuously if it’s connected to the batteries
(even if the ESC is turned off). The battery will completely be discharged and may result in damage to the battery or ESC when it’s connected
for a long period of time. This WILL NOT be covered under warranty.
FEATURES
1. Fully waterproof and dustproof for all weather conditions. (Note: please clean and dry it after use for avoiding rusty connectors.)
2. New algorithm, specially programmed for cars & boats, guarantees excellent throttle linearity, brake linearity and control performance.
3. Features adjustable drag brake (0% and 100%), you can adjust it by yourself as per the terrains, personal preference and etc. 100% drag brake is
applicable to crawlers, the 0% drag brake is applicable to boats.
4. Built-in switch-mode BEC with cont. /peak current of 3A/6A for usage with most servos on the market.
5. Multiple protections: low-voltage cutoff protection, thermal protection, throttle signal loss protection, and motor lock-up protection.
6. Simple and easy ESC programming via jumper caps.
SPECIFICATIONS
Model KN-BRUSH40 C&B
Cont. / Burst Current
40A / 180A
Input 2-3S LiPo, 5-9 Cells NiMH
Cars Applicable 1/10th Crawlers & Light-duty Boats
Motor
Limit
2S LiPo: 540/550 Size Brushed Motor ≥12T
or RPM < 30000 @7.2V 3S LiPo: 540/550
Size Brushed Motor ≥30T or RPM < 15000
@7.2V
BEC Output 6V@3A (Switch-mode)
Dimension & Weight 46.5mm*37.5mm*27.5mm / 67g
BEGIN TO USE
Step 1. Connect all the devices (as shown above) as per the motor you are using, and recheck all the connections before moving to the next step.
Notes: 1. swap the two wires from motor to ESC if you find the motor runs in reverse.
Step 2: Set the Throttle Range
This ESC can automatically recognize the neutral position of the transmitter, but you need to follow the following steps.
1) Turn on the transmitter and move the throttle stick/trigger to the neutral position.
2) With the ESC powered off, connect the motor, battery and other devices to it.
3) Turn on the ESC, when setting the “Battery Type” to “ LiPo”, the motor will beep two short beeps if you are using a 2S LiPo, three short beeps if
you are using a 3S LiPo. If setting the “Battery Type” to “NiMH”, the motor will beep one short beep, and a long beep 1 second later to indicate the
self detection is over and it’s ready to function.
Attention!
1. After turning on the ESC, you must wait (about 3 seconds) till the self detection completes. Otherwise, it may not function normally.
2. After turning on the ESC, if there is no power output and the Red LED flashes rapidly, then it means the actual throttle of the transmitter is not
at the neutral position. In that case, please check if the “Throttle Trim” of the transmitter is at the “0” position, fine tune the throttle neutral position
till the Red LED stops flashing.
3. To avoid any possible trouble, please always turn on the transmitter first and the ESC last; turn off the ESC first and the transmitter last.
Step 3: The motor can function normally after the wiring & setting completes. The Red LED flashes in the following ways during the running.
1. The Red LED dies out when the throttle trigger is in throttle neutral zone.
2. The Red LED flashes rapidly when your vehicle runs forward and it turns solid Red when you pull the throttle trigger to the full throttle endpoint.
3. The Red LED flashes rapidly when your vehicle runs backward and it turns solid Red when you push the throttle trigger to the full brake endpoint.
40
amp
BRUSHED C&B WATERPROOF SPEED CONTROLLER - USER MANUAL
# KN-BRUSH40-CRAWBT