The file 'Gemini Titan (Titan II GLV) Main Engines 1:72 3D Printer Model' is (STL,stl) file type, size is 11.2MB.
No kit has decent engines IMHO. Sized to 1:72. Enjoy!
UPDATE 2015-09-22: Thickened tank bottom; should print better.
Titan_Engines_1-72_air_scoop.STL | 142.0KB | |
Titan_Engines_1-72_frame.stl | 988.6KB | |
Titan_Engines_1-72_main_engine.stl | 1.8MB | |
Titan_Engines_1-72_pipes.stl | 1.1MB | |
Titan_Engines_1-72_pumps.stl | 2.4MB | |
Titan_Engines_1-72_REV_2015-09-22.stl | 12.0MB | |
Titan_Engines_1-72_REV_2019-07-10.stl | 12.0MB | |
Titan_Engines_1-72_tank_bottom.stl | 1007.6KB |