Heat, smell or spark
Motor, battery or cables that heat abnormally: to be processed before replaying.
- Verifications
- 6
- Until
- Dismantling
- Tools
- 4
Symptoms
- The engine or handle is burning after a few chargers
- Odour of hot plastic or burnt varnish
- Switches to battery connection or replica
- A wire or connector is warm to the touch
Causes
Most common to rare.
- Too powerful spring (definition) for motor and batteryCommon
- Gearbox that rubs: tight shimming (definition), dry grease (definition), poorly adjusted engine heightCommon
- Too thin wire or Tamiya connector that limits currentPossible
- Denuded wire, damaged sheath, short circuitPossible
- Battery connected upside down or inappropriateRare
Verifications
In the order: we start with what does not require anything to disassemble. Check as you go, the list is kept in this browser.
First of all. Do not reconnect until the cause is found: a short circuit on a LiPo (definition) can ignite the battery.
Without toolsCautionLook for a wire pinched by the handguard or butt, a melted sheath, a solder that touches a metal piece. This is the most likely place to spark.
Simple toolsTools: Precision screwdriverA reinforced spring requires a high torque motor and a battery capable of flow. The electrical compatibility calculator indicates whether the assembly is on the road.
Simple toolsA pinion too deep or too far away from the bevel gear (definition) force the engine. Adjust the screw under the handle with small bits, pulling at once, until the sound is clear.
Simple toolsTools: Allen keysGearbox open, spring removed, gears must turn by hand without a hard point. Otherwise: shimming to repeat, fat to renew.
DismantlingTools: Precision screwdriver, Gearbox fatA 16 AWG (definition) cable and a Deans or XT30 connector support the current of a reinforced replica, unlike the original mini-Tamiya.
DismantlingTools: Welding iron
Stop
Stop and hand over the reply to a technician if:
- The battery has swollen or smoked: it is out of use
- A burning odour persists after cooling: the engine or contacts have suffered
- You're not comfortable with welding.

