• Once again check that the control board is wired the correct way and the battery leads cannot be put on incorrectly. Failure to do so could be costly at the next stage.

• Keep all fingers and clothes away from moving parts while testing. This is especially important with cranks due to their scissor action.

• Re check that the motor gears are meshing properly with the nylon gears + motor bolts are tight.

• Lightly oil the nylon gears, axles (and axle boxes on crank version) with a thin oil.

• With the chassis on blocks, to keep the wheels off the ground connect the batteries.

• Ensure the control knob is turned fully anti clockwise before pressing the deadmans button.

• Slowly put power to the motors. If the two wheel sets are not moving in the same direction swap over one set of motor wires in the connecting block for that bogie.

• If the wheels in one bogie are turning in a different direction to the other then reverse the connectors from that bogie, on the control board. Turning the bogie 180° does not work.

Listen to the wheels turning to make sure they are not rubbing on anything. Keep fingers away from moving parts and switch off you controller before working the gears.

Before taking your engine on to the track see the

"running your engine section".