The clue to one of your derailment problems is the word 'abrupt' when stopping.
If you stop a Pendolino too sharply, it will always derail the set of wheels on the motor, as they have rubber tyres.
As you have read here, and in other parts of the Forum, coaches do not like to be sent in reverse. The slightest track misalignment sends them off, and the couplings are prone to jamming.
I had the same problem recently as 'Paulrelf' in that one of the track fishplates was not connected properly. In the normal direction everything was fine, but when I reversed a train, which is very rare, it derailed because the track was slightly higher in that direction.
AlanB
If you stop a Pendolino too sharply, it will always derail the set of wheels on the motor, as they have rubber tyres.
As you have read here, and in other parts of the Forum, coaches do not like to be sent in reverse. The slightest track misalignment sends them off, and the couplings are prone to jamming.
I had the same problem recently as 'Paulrelf' in that one of the track fishplates was not connected properly. In the normal direction everything was fine, but when I reversed a train, which is very rare, it derailed because the track was slightly higher in that direction.
AlanB
