I have been briefly looking at the large scale models of trumpeter modelkit and am impressed about the ambitions rather than the results of the kit maker, it is however impressive what some of the modelbuilders have achieved. My memories goes back to the days we were crawling under the floorplates trying to figure out how things worked without any drawings or manuals in the first years. The way some of your guys are able to model the piping system is awesome. On order to have a correct system it helps to know how it works and below is an image of the lubeoil system up front of the port engine of U 995 having a non reversible GW engine without lubeoil purifier (sentrifuge) .
The system works as follows: Each engine has a dry oilsump with 5 drainages to a common drain pipe leading to a double valve cage being able to select port or stb system tank. The attached gearpump up front is able to operate in two turningdirection (a complicated rudiment from a direct reversible engine) takes suction via a suction valve from the relevant systemtank to the suction side of the pump, before entering the pump is a smaller branch pipe with valve to the discharge pipe and from the discharge of the pump is a small pipe with reliefvalve to the engine drain pipes. The dischargepipe has a thermometer and then a NR valve before entering a valvecage having connections to port filter and cooler, stb luboilsystem and the emergency lube oilsystem. The cooler has on the top a venting pipe with cock, the ventpipe ends in the common main drain pipe of the engine. The cleaned and cooled lubeoil leaves the cooler via a three way cock enabling connection to port engine, stb. engine or bypass. After this cock is a branch of pipe ( full pressure) to the governor servo motor (aft of the engine) which has a drain to the common drainage pipe. The main lubeoil pipe now passes very visible the front of the main engine where a pressure reduction valve is situated reducing the oil pressure from 3kg/cm2 to 1,5 kg/cm2. Then a thermometer (in mainengine) before branch off to the various components of the engine like main bearings, register drive, turbocharger etc.
Tore