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| FM/DM threads Everything about FM/DM in CoD |
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#1
09-17-2012, 03:14 AM
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but i havnt had a chance yet to try the disastersoft guy's suggestion of opening the radiator before engine start and then keeping it open continuously during flight (without ever closing it, in case it from then on acts as if staying closed) to see if it makes a difference with the major overheating problem. if this makes some difference (i didnt say "solve" all FM and overheating problems), then it might indicate a bug in addition to the other incorrect FM issues we have with the hurricane and spitfire. in fact i have been doing the exact opposite with CEM, i deliberately keep the radiator closed at engine start and taxi to try warming the engine as quickly as possible and reach correct engine temp needed for takeoff power settings so, for the other readers who are concerned about trying to resolve FM issues, other then going into hysterics about believing this means there being no problems at all , has anybody tried this new suggestion yet to see if it makes a difference in the overheating behavior ? (i cant see one poster here yet to confirm/reject this). with luthiers limited time and attention to fix the FM issues we have been complaining about, the more information we can give him the better.
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President Dwight D. Eisenhower 1953: Every gun that is made, every warship launched, every rocket fired signifies, in the final sense, a theft from those who hunger and are not fed, those who are cold and are not clothed. This world in arms is not spending money alone, it is spending the sweat of its laborers, the genius of its scientists, the hopes of its children Last edited by zapatista; 09-17-2012 at 07:57 AM. 
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#2
09-17-2012, 07:41 AM
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Ok my apologies, you have a point. Will have to try this full radiator before starting procedure. Might be a bug.
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#3
09-17-2012, 09:46 AM
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Is anyone here using the prop pitch to maintain the rpm to 2600 water temp to 99 and oil temp to 90 oil pres. 80 engine psi 4.5 to 5.5 radiator open or half closed mixture full rich until 17000 feet less psi higher and higher until 27000. This is not possible on the Spitfire MKI where I go from one pitch to the other depending of water and oil temp you should always monitor oil and water temp and play with the water radiator opening and the throttle and never go over 110 water temp for more than 5 min. I fly long missions in Spitfires and find this a fun but challenging plane to fly. Since the last beta patch I do not use the visual aids for throttle, pitch, radiator, etc… anymore for me it helps. The full raditor thing at take off is written in the Spitfirre manual in the real plane it should be done so why not in the simulated one? Last edited by senseispcc; 09-17-2012 at 09:50 AM.
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#4
09-17-2012, 11:26 AM
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However, I can tell you now, that the amount of surface area producing drag from the radiator shutters, programmed into the RAF fighters' Engine Modelling, was Doubled from v1.07 to v1.08. It was already 50% greater than the radiator shutter drag surface area plus oil cooler drag surface area modelled into the Bf109's Engine Modelling. This means that this surface area for drag calculation purposes in the RAF fighters is now Triple, three times, 300% greater, than that modelled in the Bf109s. After extensive testing on a public server with temps effects off, then further extensive testing on a public server with temp effects on, i.e. ATAG server 2 and ATAG server 1 respectively, the workaround with 50% rad seen in the video, (if you even watched the video or followed the link) is the result. In addition to the excessive radiator drag virtually nullifying any increase in rpm and/or increasing of boost setting, the relationship between adequate airspeed and engine cooling is dramatically more critical in the RAF fighters than in the 109s. This information (in much greater detail) has already been communicated to both Luthier directly, and their FM programmer via BlackSix directly. The problems surrounding incorrect mixture modelling also highlighted in the link I gave have also been communicated directly by both me and IvanK. I would've explained this earlier, but I'm a one fingered typist, and posting stuff of this length more than once gets on my wick a bit. Please read the thread I linked in more detail. Thanks Mate. 
Last edited by ATAG_Dutch; 09-17-2012 at 01:35 PM.
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#5
09-17-2012, 12:05 PM
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Funny!...I am a one finger wonder too. Have you considered using speech to text, then copy/paste here. I was going to try that, but then I realized that, I rarely have much to say.  ...edit: Dutch you have to try this, I just did with zero mistakes using Win 7...give it a try!
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 GigaByteBoard...64bit...FX 4300 3.8, G. Skill sniper 1866 32GB, EVGA GTX 660 ti 3gb, Raptor 64mb cache, Planar 120Hz 2ms, CH controls, Tir5 Last edited by SlipBall; 09-17-2012 at 12:40 PM.
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#6
09-17-2012, 12:30 PM
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the reason for me post this thread was to flag what the disastersoft guy seems to be specifically suggesting in reply to a customer question about overheating, ie to open the radiator before engine start, and then never close or change its setting again. he seems to think that gives a major change for the better, i have no idea if it does (and cant try it for a few days), hence me posting it. note: i removed the initial closed typo picked up by Dutch's post below , 'cause leaving it in seemed to confuse more people later
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President Dwight D. Eisenhower 1953: Every gun that is made, every warship launched, every rocket fired signifies, in the final sense, a theft from those who hunger and are not fed, those who are cold and are not clothed. This world in arms is not spending money alone, it is spending the sweat of its laborers, the genius of its scientists, the hopes of its children Last edited by zapatista; 09-17-2012 at 03:31 PM.
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#7
09-17-2012, 01:26 PM
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'Open Cowling FULL before start engine and Do not close it!' This would currently be equivalent to flying along with a twenty foot parachute tied to your a*se (exaggeration, just in case any purists object). Last edited by ATAG_Dutch; 09-17-2012 at 01:30 PM.
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#8
09-17-2012, 02:04 PM
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 typo in that last post after a long work day (*edit made in original post)what peaked my interest on his comment is that he set it to open before engine start, and then never touched it again, as if altering its setting after engine start might lock it closed with the engine more prone to overheating from then on (yet still be subject to drag with cowling open). whereas i, and prob most people, close it at start, then keep changing it ones the engines warms up and then mostly keep it open unless at very high altitude at what started as a simple suggestion (from him) and my wanting to know if others had tried it, it all become a bit long winded and out of proportion, i'll try it on the WE. if from then on you see a high speed spitfire able to match the hun online, that be me and no begging for trade secrets will get me to reveal its method ps: i do note what you said about the parachute effect reversing whatever speed gain might be created
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President Dwight D. Eisenhower 1953: Every gun that is made, every warship launched, every rocket fired signifies, in the final sense, a theft from those who hunger and are not fed, those who are cold and are not clothed. This world in arms is not spending money alone, it is spending the sweat of its laborers, the genius of its scientists, the hopes of its children Last edited by zapatista; 09-17-2012 at 03:31 PM.
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#10
09-17-2012, 06:37 PM
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I flew a spitfire 2a, with 50% fuel. I've carried out testing at three altitudes >250ft, 5,000ft and 10,000ft. I tested the airspeed at 2400, 2600 and 2800 RPM at each altitude. Boost pressure was ALWAYS adjusted to read +5 in each case. All tests were carried out with 100% open radiator All speeds are indicated, at straight and level flight. The ONLY variable was this - one test 1 I opened the radiator before starting the engine. In test 2 I waited until I was nearly airborne before opening the radiator. SPEED test results:  http://postimage.org/image/mqaksad1v/ For me, there is NO obvious speed improvement resulting from opening the radio before engine start in the 2a.
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