According to the manual, the build limit of a factory determines the maximum size of any one vehicle/plane factory.
That is, the T-34 M1941, which has a build limit of 75, does NOT mean that the number of T-34 M1941's produced per turn caps out at 75, but rather that each individual T-34 M1941 factory can expand to build a maximum of 75 per turn, so if there were 3 of such factories, the maximum would be [75 * 3] or 225 per turn, but this of course depends on how many factories there are, the starting level of each factory, and how damaged the factories are on their way to repairing and expanding.
What I'd like to know is:
1. Is there a way to quickly find out the number of factories of any single vehicle, to get an insight on this theoretical maximum?
2. How do we compute for lend-lease vehicles? The SU-57, for example, has a build limit of 4 and the production runs from 1943/04/01 to 1944/10/31, or roughly 82 turns. 82 turns at 4 vehicles per turn comes out to 328 total, which is about half of the 650 that the Soviets actually received historically from the US, but then I don't think lend-lease units have factories?