LSWR/SR T9 4-4-0
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Note the clear cab - no visible regulator and full backhead detail. Only needs a driver figure & fireman to complete the effect. It would be good to have the driver leaning out of the cab with a rotating head linked to the reverser so that he looks in the direction of travel - no prizes for the first to do it!
Like all of my current models this is entirely made of nickel silver with lost-wax brass castings made from 3D printed masters, copper boiler, copper gas tank and, in this case, plastic centred wheels. The boiler uses 3 flues with a ceramic burner that is remotely adjustable for idling.
The model is radio controlled only - no manual option - it would have involved too many compromises.
See here for more details of the R/C system. It provides controls for the regulator, reverser, idling the burner, over-riding the pump bypass and uncoupling. It also provides feedback on speed, boiler pressure, water level and battery voltage with warnings when pressure goes too high, or voltage or water level too low. The system is fully integrated at no extra cost.