From what I've read and seen, the A2A Spitfire has *ALL of the above modeled through Accusim, including the damage done if you abuse the engine due to the prop. That was one of the things that Scott highlighted in his video on the propeller system in the Spitfire.
I was not
talking about "damage to engine due to prop" but "damage to prop due to engine". There's a heck of a lot of difference between the two.
If we were actually talking about prop pitch damaging the engine (and not the other way around) then OBVIOSLY we'd start the engine with "fine" instead of "coarse"... as we do with every other plane except Spitfire MkI
. Wasn't the reason why you had to put it into coarse due to the counterweight mechanism in the prop pitch control? Then obviously it's not about damaging the engine if you shut down and start the engine with fine prop - it's about damaging the prop control mechanism instead.
Regarding my list of assumptions (based on Killratio's response):
A) was in incorrect. You can move from coarse to fine at low rpm. Even stand-still... but you should do it because it's impossible to return it to coarse before starting the engine.
B) was correct: you might need to slightly rev up to be able to push the plunger in. In simulator, having any revs is enough (no need to raise the idle) but with engine shut down, it doesn't work.
C) was is... correct? Even though CapFlyer says it damages the engine instead of the prop pitch mechanism. (I just fail to see how it could possibly damage the engine to start in "fine".)
D) was correct
E) is a contradicting now with A). See contraction analysis below.
Regarding E), I'm going to quote a few lines, both from Killratio:
Then at start up you will be in coarse still (required) as you can not move TO coarse without significant rpm due to the counterweight arrangement.
(you should in RL be able to drag teh prop to fine pitch even with teh Merlin shut down..but can't to coarse.)
So, you CAN drag the prop from coarse to fine (but not the other way around). Therefore I assume you should be also able to drag the prop from coarse to fine with low rpm idle, before your engine has warmed up.
Therefore: why do you recommend that after you've started it with "coarse" it should NOT be set to "fine"? If you can switch from coarse to fine with ZERO rpm, you should be able to switch from coarse to fine with low rpm as well. Therefore, I don't see why you claim:
Just remember NOT to bring the pitch up BEFORE min oil temps and radiator temps (15C and 70C respectively) as to do so you must increase rpm above the low idle required until fter those temps are reached!
Does the last quote not contradict the fact that you said you can move the pitch from coarse to fine even with engine shut down? Because I see an elephant sized contradiction right there.
EDIT: seem like you also noticed the same contradiction as you later added
EDIT..you can bring pitch up immediately after the engine "settles" (my Altzheimers cutting in again), you MUST though make sure that you reduce throttle as you increase rpm so it doesn't go above low idle. This can be tricky, particularly in teh cold..so SAFEST just to wait until min temps....which is what I do.
It's things like these that make my mind go WTF. Because I have that nature that I seek possible contractions in everything I read. It makes me a dickhead, perhaps (and I admit being one). But am I a troll for mentioning it when I see it?