Modified Aster LNER A4 "Mallard"

Описание к видео Modified Aster LNER A4 "Mallard"

This Factory Built Aster LNER A4 "Mallard" is originally equipped with an axle pump mounted under the tender.

Since I already had major problems with the reliability of this configuration on my SBB A3/5 compound, I decided that the A4 should also be converted to a feed pump mounted under the locomotive.

This mounting position has the great advantage that much more adhesion force can be transmitted via the pump driving axle because there is considerably more weight on the driving axles than on a tender axle. Also, the water tank, which becomes increasingly empty with advancing running time, no longer plays a role.

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