pete waterman
Western Thunderer
Just on the tanks - there are two problems with them - the spring compensation doesn't work as the axil boxes stay where they are and ride up over the points, and there are no heat coils fitted and there would have to be. That aside there are lots of points to take into account with this traffic as it's far more complicated than you think. There are two fantastic books - I must have read each four or five times and I still don't know that much