Merlin operating temperature limits

[Osprey]

Guys,

I am on the verge of raising a bug but want to make some clarifications from our Merlin experts. I would like to compile the correct data here through discussion.

Presently from memory (untested formally) the merlin engine in Spits and Hurricanes will knacker up the instant it gets over 105C oil and water (I am open to correction on this since I am not in game right now - If nobody posts the correction I will test and edit this)

The pilots notes of each type contradict this, for example for the Merlin XII in the Spitfire II



For example it appears that we should manage 135C for 5 mins on coolant. I can't imagine doing that for 3 seconds in the current FM/DM, so RAF types - let's get it right and I'll raise a bug if it's required


Hell we can hardly complain @ 1C when we've had a year to spot this ourselves!!

[Robo.]

Osprey, oil temperature limit seems to be alright in game. Glycol is a bit more complicated - Merlin XII (the page you posted is reffering to this engine and to Spitfire Mk.II we've got in game) has had slightly different cooling system and coolant, and in result higher temperature limits than its precedestor Merlin III. I have not spent enough time in the Spitfire Mk.II to confirm they got the limit right, but as for Mk.I fighters, both Hurricanes and Spitfires, the temps were more or less OK.

I will post more data later on.

[Osprey]

You see, this is why I'm asking

[NZtyphoon]

Just a comment on the coolant; the Merlin II and III series used 100% glycol, meaning they generally operated at higher temperatures than the Merlin XII which used 70% Glycol 30% water.