It is a typical solution to fix bottom part of rotation device direct to soil by 12 pieces of pegs what belongs to set. Than we have more mixed options.forttravel wrote:How about rotation of this gun placed as usual on eastern front in earth digged emplacement without concrete base? Old local guys from my area where was one of 15,5 cm gun batteries said that gun was put on big metal frame with rotation function. This is for sure a description of schwere Drehbettung. But it was similar device as for concrete emplacement or different bottom frame with some teeth to fix it to ground?
1. A upper part of Drehbettung placed on on concrete base with Pivoitzapfen a fixed rotation axis. 2. More simplify option only with Pivotzapfen and a rotation beam only. Detailed drawing Jos posted here: download/file.php?id=410440&mode=view 3. Intermediate version with "Pivotzapfen" and small wheels. All options could be joined with Schwenkwerk device: viewtopic.php?f=70&t=126843&p=2074539&h ... k#p2074539
All these options are quite clear, but we have in HKB 18./979 next one new option: kind of frame what joined functions of Pivotzapfen, upper part of Drehbettung, Zustangen and Schwenkwerk. Is it a typical device?