ID oil cooler

Thank you

Sorry, I`ll speak English this time! “Auto Controls” is the term used to refer to the autopilot, so yes, I wouldn`t be surprised if the Lincoln used a similar system. The engine set-up would be different as the accessories were primarily fitted to an auxiliary gearbox on the Lincoln.
The autopilot was powered by an oil filled vane type compressor shown fitted to the opposite bank of the engine in the attached picture, and the cooler on a bracket in the foreground. The other image shows the general services (Heywood) air compressor fitted where the cooler goes, on another engine on the same aircraft. I think the cooler was fitted there to take advantage of the cooling air scoop, to save a redesign.
There are two completely different designs of autopilot compressor, RAE and K3, but both used the same oil cooler.

Pete[ATTACH=CONFIG]230389[/ATTACH][ATTACH=CONFIG]230390[/ATTACH]

Pete, thank you for the precise and generous ID, diagrams and context. If anybody wants the cooler happy to swap, PM for ” oil cooler, NS, GSOH, looking for aeroplane for fun times and friendship.”

Sorry, I`ll speak English this time! “Auto Controls” is the term used to refer to the autopilot, so yes, I wouldn`t be surprised if the Lincoln used a similar system. The engine set-up would be different as the accessories were primarily fitted to an auxiliary gearbox on the Lincoln.
The autopilot was powered by an oil filled vane type compressor shown fitted to the opposite bank of the engine in the attached picture, and the cooler on a bracket in the foreground. The other image shows the general services (Heywood) air compressor fitted where the cooler goes, on another engine on the same aircraft. I think the cooler was fitted there to take advantage of the cooling air scoop, to save a redesign.
There are two completely different designs of autopilot compressor, RAE and K3, but both used the same oil cooler.

Pete[ATTACH=CONFIG]230389[/ATTACH][ATTACH=CONFIG]230390[/ATTACH]

Thank you

Yes, it looks identical to the Lancaster auto controls oil cooler. The stores ref is 27A/1379 (not much help as yours isn`t stamped) and the part number SIS251.
The fact that it has Rolls-Royce and MMOR marks tends to point to the Rolls-Royce / Morris powerplant for the Lancaster too.
It is fitted in place of the Heywood compressor on one of the engines and uses the same cooling air scoop that the compressor would have used.
Introduced in 1941.

Edit: A Merlin engine oil cooler weighs at least 30kg!

Pete

Peter, thank you. I have seen coolant radiators made by Morris Motors in other aircraft with Packard Merlins so the cooler may be stand alone. Would Lincolns have the same auto control arrangement? Why is this part of the engine? I understand it is in the position normally occupied by the air compressor but there is no mechanical linkage to the engine. Did RR design the auto controls? What are they controlling? Too many questions!

Yes, it looks identical to the Lancaster auto controls oil cooler. The stores ref is 27A/1379 (not much help as yours isn`t stamped) and the part number SIS251.
The fact that it has Rolls-Royce and MMOR marks tends to point to the Rolls-Royce / Morris powerplant for the Lancaster too.
It is fitted in place of the Heywood compressor on one of the engines and uses the same cooling air scoop that the compressor would have used.
Introduced in 1941.

Edit: A Merlin engine oil cooler weighs at least 30kg!

Pete

Test pressure is too low for an engine oil cooler.
It could be a heater matrix, but there is also a small heat exchanger on the Lanc which looks like that, positioned near the compressor, possibly for the auto controls? I would have to check.

Pete