Trumpeter has released the only 1/35th scale rendition of the rare Soviet S-51 Self-Propelled Gun, mating a modified KV-1S chassis with a 203mm heavy howitzer. The kit brings together parts from their excellent KV-1 series along with all-new molding for the gun and upper deck to create a positively Russian-looking brute.
Developed by the Grabin Central Artillery Design Bureau (GAU) in 1943, the S-51 passed trials successfully in the spring of 1944, but never entered mass production. Among the more interesting problems uncovered was the tendency for the S-51 to move to a lateral displacement when firing due to the inertia caused by the high line-of-fire design. At roughly 55 tons, that must have been something to see. Also, since the elevation angle was relatively small and the recoil so strong, the nine-man crew were not able to stay on the vehicle when firing.