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Everything posted by grafspee
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Strange issue with landing gear (STILL!)
grafspee replied to Raptorattacker's topic in Bugs and Problems
That is crazy ! -
Mysterious engine shutdown at high level.
grafspee replied to TED's topic in DCS: Spitfire L.F. Mk. IX
As long engine does not get colder then 70C and oil temp not lower then 40C engine should be fine. -
Strange issue with landing gear (STILL!)
grafspee replied to Raptorattacker's topic in Bugs and Problems
It is well know issue with replays in DCS. Not everything plays out exactly the same. -
Mosquito's artificial horizon fails on shutdown
grafspee replied to ssn's topic in Bugs and Problems
I haven't seen any news from ww2 team for a long time. Does anyone know are they alive ? -
Exactly why would anyone want to change p47 cockpit, actual one looks prim.
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Yeah those things are portrayed in Hollywood movies like engine stops rotating when low on fuel or something and switching every thing back and forth helps restart engine again. In air if nothing serious happens to engine and engine isn't seized up it will wind mill due to air passing through propeller even if engine produce no power at all. If engine is seized up it is over, nothing you can do about that in air.
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I think if you don't turn on gen in P-51 or any other WW2 plane in dcs you will drain battery and equipment will start failing after some time.
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Yes they have done a lot past years. I especially like fully visualized spinning prop, no other sim has this.
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Oh so you are asking for whole brand new start up/shut down logic. Yeah DCS in that regard is plain flat. Also DCS is missing cold engine simulation as well, cold engine behave completely different then warmed up engine. I brought that topics couple of times. Obvious miss understanding from my side sorry about that.
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It is impossible to recreate sound levels of those engines in game in terms of loudness. So start up sound is quiet so that sound level at full power can be manageable. I was standing something like 30m from Starting up spitfire and how i head that was completely different than what you can hear in YouTube. Even i was shocked when i played my own recordings. recording device adjust mic sensitivity to the loudest sound. Here is good example when two spitfires are taxing and spitfire far away is powering up for take off, loudness becomes so high that recording device lowers mic sensitivity that much that it mutes that close by spitfire instantly. That is why on YouTube idling planes are so loud.
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@OLD CROW In DCS there is nothing like "justified module". Module will be a thing as long someone is willing to make plane for DCS. I think ppl who makes modules justify those based on completely different criteria, i have some idea about that but i can say one thing for sure. Development of modules by ED or third party isn't based on historical consistency. Like @Art-J said above. We don't have hurricane in DCS because no one was willing to develop that plane that's it, it does not matter how good or how bad it fit in historical map consistency.
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This is a page for engine limitation for spitfire IX and XVI and tell me in which part of it merlin 266 is more powerful then merlin 66 which is modeled in DCS's spitfire ? Both engines came with factory limits for 100 octane fuel and both engines got limits elevated for 150 octane fuel but we don't have that fuel in DCS. Merlin 266 was exactly the same as merlin 66 which was mounted in MK IX LF for low altitude performance. I-16 or La-7 is third party modules. There is no reason to blame ED that third party choose to model I-16 and La-7 and there is no reason to blame third party for not matching Normandy period map with their set of planes.
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Any tips for dogfighting / manouvering?
grafspee replied to Viceman's topic in DCS: Fw 190 A-8 Anton
It applies for all warbirds if you are not using any extension for stick control. It is simply way to sensitive with short stick and controling stick with fingertips as gently as possible is the way to handle short sticks. Most ppl who states that flying is impossible because warbirds stalls out way too easy are flying with "death grip" jerking stick way too hard. -
I think that devs forgot that plane can do hundreds of missions and engine can last hundreds hours. So they assume that engine limits like 5 min for military power is set so the engine will last one sortie. If the system is set that way any deviation above those limits will make that engine can't do a single sortie. Or there can be another reason. Devs need hundred of hours to model and program those engine failures only to not be able to show those failures ? Because if you can firewall engine for an hour with no engine failure so what's the point of modeling and programing all that stuff
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Engine Failure without obvious reason (Video Available)
grafspee replied to Limaro's topic in DCS: P-51D Mustang
Mustang has installed angle of incidence in vertical stabiliser to counter p factor. It has adverse effects at very high speeds. -
Engine Failure without obvious reason (Video Available)
grafspee replied to Limaro's topic in DCS: P-51D Mustang
Based on my experience in this forum if someone say "gentle flying" it actually means completely opposite. Dictionary for WW2 forum part Gentle flying: that means that individual is abusing engine way beyound operating limits. Engine failure is imminent. -
There was a problem with RAM air in P-51 so from time to time i run this check then i know for certain that it works. RAM air bug was nasty because when you moved levers in to ram position it didn't get the ram working and only way to quickly check it, is to drop MP to 30 inch and cycle lever back and forth and if you get change in MP then you are good to go.
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Supercharger is directly connected to crank shaft so as long engine is rotating supercharger is rotating too. You can check RAM at every altitude as long as plane is in the air. Only thing you need to do is to retard throttle to obtain less then 42" of manifold pressure because above 42" automatic boost control is engaged and you won't see RAM effect on manifold pressure. Set it to 30" and move ram lever forward and backward and you will notice increase and decrease. RAM depends on aircraft speed so faster you flying greater RAM effect you will notice.
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Pre-oiling fresh engine include external oil pump, that did not change since war time till today. If engine is used frequently, engine stays pre-oiled if used rarely you need to pre oil it. Doing 6 blade, engine pre oil status remain exactly the same as before 6 blade count. Ground crew doing blade check. 15s starter limit. Hand turning engine is just safety and reduce risk of serious engine damage if something will lock piston from movement. I already responded twice, but you still refused to present your proof or sources, im still waiting. It is quite odd that you did not read P-51 manual and P-51 maintenance manual. If i go thought maintenance manual when refilling oil or coolant they just started engine for 1-2 min if they do timing adjustment they hand turn engine, i doubt that they used starter for anything else then starting engine.
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I have couple sources but this one should be enough. If not I can't help you. Pre-oil engine. Now it is your time shine, show me your sources.
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There is non right now but at this state of DCS hand turning prop or doing six blade check is pointless. You will never have engine locked in DCS. But that would be indeed nice thing to be able to order ground crew to turn prop before start up
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So this is inaccurate then. And by turning 6 blades you will oil nothing. This is another misconception, turning engine so slow oil pump has no chance to pick up any oil or pump any decent oil volume to do any oiling. In modern P-51 when plane was set back for long period, they use electric oil pump to pre-oil engine before start up, this is only way to pre-oil engine. Turning 6 blades is just check before start up that engine can freely rotate. In war time manuals that is said that count blade check is done by hand rotating engine by ground crew. Operating starter longer then 15s continuously was forbidden so no cranking engine by starter for other reason then engine start up. Another thing is oil pressure behavior in DCS, in real plane it may take even 20s after start to build up oil pressure at the oil pressure sensor. In DCS we have oil pressure even when we cranking engine via starter which is not true at all. In DCS we have instant 200 psi oil pressure
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War time P-51 were cranked by hand prior start up by ground crew during preparation aircraft for mission so pilot could jump in cockpit flip starter and that's it. Modern time P-51 are modified so ground crew don't have to crank engine by hand it is just convenient for modern users. Take note that planes like P-47 or any other vintage plane which is equipped with inertia starter is still today cranked by hand before start up. Cranking engine before start up is safety procedure to not encounter hydro-locked piston during engine start up if not checked bended connecting rod is guarantied. DCS P-51 is war time version so there is no "counting 6 blades" during start up procedure.