I'll just leave you two too it..

Thank you, Jessie.
On a war time Imperial German Zeppelin, lighting up would surely send you to court marshal, faster you could say “cigarette”. Except one spot on the airship, where smoking was allowed. Which one??

I am guessing here but could it have been on the bridge or in the observation car?

That's it: observation car. Thanks Warren.
Bring it on.

Interesting fact, the observation car hung from the zeppelin on a 750 or 1000metre long cable of stainless steel with a rubber insulated core of copper wire which carried telephone signals from the car to the zeppelin.

OK, where is the engine oil-pressure transmitter located in a de Havilland Canada Caribou?

The pressurised smoking room of course!! Well that was the hindenberg.

EDIT: That was to the previus question of cource

That's definitely a Jessica thing so I leave it up to her.

Main engine panel in the cockpit?

No idea....

Nick.

In the cargo compartment? Ready to pump more oil into the r2000s as it squirts out over the northern tundra?

No to all so far.. Think about the system as a whole...

Perhaps in the oil tanks? It makse sense if the entire system was maintained at the same pressure...

No.. pressure is taken from the engine...

My guess is that there is no oil pressure gauge. I think that there is just a low and high pressure indication light for each engine on the lower end of the main engine panel.

Is it part of the feathering gear of the prop?

It definitely has one oil pressure gauge for each engine.. I should know as I worked on them as an Instrument Fitter for a few years.. Now they are sitting at Oakey rotting away..

is it the gauge or the sender we are looking for? I thought the sender might be part of the feathering system, not the gauge, that would just be stupid.

That is definitely a Caribou instrument panel Antonatos, but the RAAF ones were a little different and painted black, not grey.

The transmitter, or sender. It would make sense that it is not too far from the engine. Less chance of a leak...

It was fun changing the transmitter as you had to lockwire the bolts and screws totally by feel as you could not see the bolts and screws you were lockwiring. Joy.

The prop-feathering system was done using a differential switch mounted in the roof of the cabin between the wings. Pressure was applied to both sides of the switch and if the propeller wash of either of the engines decreased below a certain point the switch automatically feathered the prop on the sick engine.

Amazing what you can remember after 30 years..

Aha !!! Gatsa..
From the flight manual:
" The oil pressure gage is an electrically operated autosyn gage witch registers oil pressure at the rear engine case”. The schematic attached, shows two oil pressure gauges in the central engine panel lower line.
The oil pressure transmitter is indicated in the engine nacelle right underneath the oil tank drain.
Now since you asked and I can’t locate the gauges in the picture above I’d say the latter.

On a second glance, it’s located sideways, inner side of the drain.

I think that is close enough.. It and two other pressure transmitters were located in the main wheel well on the rear of the firewall. You had to stand up the whole time while you were changing them and have your arms above your head for ages. Lovely job..

Congratulations Antonatos. Over to you.

Wow is that a proper transmitter then plumbed up to the cockpit gauge, not an electrical transducer?

Tell me something Warren. Did the above mentioned oil pressure gauges on the main engine pannel exist or no ??