A super run Tom. Mine are still at the Drawing stage with bits piling up round scale frames and all that... They all run the same whatever you do with them. The 10 in full size were Red Route Locos especially built to move carriage stock in and out of Paddington as fast as possible. They are very LIVELY in all sizes. David and Lily.
May I ask, why so fast? All that beautiful motion is just a blur, and, if those tiny flanges took one tiny misstep then that beautiful locomotive becomes just so much scrap...
It is a touch on the fast side, but nothing near its capability. They hold the track well, it’s extremely rare for them to just the rails, and even if it did it would still be far from scrap, repairs needed but nothing that’s beyond capability.