Toys / RC Models & Drones
Instruction Manual for Losi 22S No Prep Drag 1/10 Scale 2WD RTR
Comprehensive user guide for the Losi 22S No Prep Drag 1/10 Scale 2WD RTR. Includes setup, transmitter functions, ESC calibration, motor maintenance, and troubleshooting.
PDF source: Français · summary: English
Quick answers from the manual
Quick answer
- The Losi 22S No Prep Drag is a 1/10 scale 2WD RTR vehicle. Setup involves installing a charged battery, binding the transmitter, and calibrating the ESC. p. 3, 4, 6
Key actions
- Powering on p. 5
- ESC Calibration p. 6
First start
- Install transmitter batteries (4 AA). p. 4
- Install and connect vehicle battery. p. 4
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Problems and fixes
Steering does not work
Ensure servo plug is connected to receiver correctly; check for damaged servo gears.
p. 8Error codes
| Code | Meaning | Action | Pages |
|---|---|---|---|
| LED flashes red with short single pulses | LVC protection activated | Check battery voltage | p. 7 |
| LED flashes green with three short... | ESC has exceeded the continuous current limit | Check for binding or over-gearing | p. 7 |
Maintenance and reset
- ESC Programming p. 7
Technical specifications
| Parameter | Value | Meaning | Pages |
|---|---|---|---|
| Operating Frequency | 2.4GHz | Radio control frequency | p. 4 |
| Receiver Voltage Range | 3.5–9.6V | Operating voltage for receiver | p. 5 |
Where to find it in the PDF
- Transmitter Functions p. 4
- ESC Calibration p. 6
- Troubleshooting p. 8
Table of contents
Manual images
Click an image to enlargeQuick Guide from the Manual
The Losi 22S No Prep Drag is a 1/10 scale 2WD Ready-to-Run (RTR) vehicle. Before operating, ensure you have read all safety precautions. The vehicle requires a charged battery and 4 AA batteries for the transmitter. Always power on the transmitter before the vehicle and power it off after the vehicle has been powered off.
Setup and Installation
Battery Installation: Ensure the ESC is powered off. Remove body clips to access the battery compartment. Secure the battery using the elastomer straps and connect it to the ESC, ensuring correct polarity.
Transmitter Functions: The included Spektrum SLT3 transmitter features throttle and steering trim, throttle limit (50/75/100%), and servo reversing switches. The LED indicates power status (solid red) or low battery voltage (flashing red).
Binding: To bind the receiver to the transmitter, press and hold the bind button on the receiver while powering it on. Power on the transmitter and wait for the connection to be established.
ESC and Motor
ESC Calibration: The Spektrum Firma 100A ESC must be calibrated for neutral, full throttle, and full brake positions. Use the SET button on the ESC switch to enter calibration mode and follow the LED flash sequences.
Gearing and Gear Mesh: The gear mesh is set at the factory but may need adjustment when changing gears. Ensure there is a small amount of movement between the pinion and spur gear. Do not allow the ESC or motor to exceed 160°F (71°C).
Maintenance
Wet Conditions: While the vehicle is water-resistant, it is not waterproof. After running in wet conditions, drain water from tires, dry the battery contacts, and spray metal parts with a water-displacing light oil. Do not use a pressure washer.
Troubleshooting
If the vehicle does not operate, check the battery charge, ESC switch position, and transmitter batteries. If the motor runs but wheels do not rotate, check the pinion/spur gear mesh and ensure the pinion gear setscrew is tight.
Manufacturer information
Horizon Hobby, LLC
Practical help
Common problems
Vehicle does not operate
Check if the battery is charged and plugged in, the ESC switch is ON, and the transmitter is ON with fresh batteries.
Motor runs but wheels do not rotate
Check pinion/spur mesh, tighten the pinion gear setscrew on the motor shaft flat spot, or check for stripped transmission gears.
ESC gets hot
Use a smaller pinion or larger spur gear to lower the gear ratio; check for driveline binding.
Steering does not work
Ensure the steering servo plug is connected to the receiver correctly and check for damaged servo gears.
Before use
- Read all safety precautions
- Charge the vehicle battery
- Install 4 AA batteries in the transmitter
- Install and connect the vehicle battery
- Power on the transmitter, then the vehicle
- Check steering and throttle control directions
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Images and diagrams
- Transmitter layout showing trim knobs, steering wheel, and throttle trigger
- Battery installation showing elastomer strap placement
- Receiver diagram showing port locations
- Gear mesh adjustment showing paper placement between gears
Model compatibility
- Compatible with 2S and 3S LiPo batteries
- Transmitter uses 4 AA batteries
- Receiver is SLT/DSMR compatible
Manual page author
David Miller
Documentation analyst