brucewhf Posted June 22, 2022 Share Posted June 22, 2022 (edited) Put these switches to OPEN all the way in flight. As long as you don't stall the P-51, engine will never quit. If you pay attention to the OIL temp gauge you will notice that it never exceeds green area. I don't know whether it is true to life but it just works in DCS!! Edited June 22, 2022 by brucewhf Link to comment Share on other sites More sharing options...
Hunter Joker Posted June 22, 2022 Share Posted June 22, 2022 37 minutes ago, brucewhf said: Put these switches to OPEN all the way in flight. As long as you don't stall the P-51, engine will never quit. If you pay attention to the OIL temp gauge you will notice that it never exceeds green area. I don't know whether it is true to life but it just works in DCS!! It works only if You manage to keep speed above 200mph, lower there's no way that 3000rpm and 60+ manifold You temp not rise until venting. Also with the rad open You top speed is a bit lower. https://www.youtube.com/user/garaganotube Link to comment Share on other sites More sharing options...
Doughguy Posted June 22, 2022 Share Posted June 22, 2022 Someone didnt read the manual Zitat Also with the rad open You top speed is a bit lower. Unless you have to run, its not really much of a problem if you enter a dogfight. During cruise with mp/rpm in the greens i have them in auto. https://sr-f.de/ Link to comment Share on other sites More sharing options...
Silent Film Posted June 22, 2022 Share Posted June 22, 2022 5 hours ago, brucewhf said: Put these switches to OPEN all the way in flight. As long as you don't stall the P-51, engine will never quit. If you pay attention to the OIL temp gauge you will notice that it never exceeds green area. I don't know whether it is true to life but it just works in DCS!! It is a bit better that way for the engine, but I have done some speed tests and found out that way you lose some 20 knots of speed. And speed is one of the advantages of Mustang, so I don't think it is a good idea to compromise it. Still, if you stall Mustang the engine will burn out. And if you fly horizontally the engine will never burn out anyways even on maximum power. I have been testing this option in dogfights these days, and with both radiators open I couldn't zoom from an AI Spitfire, I was barely faster than the AI Spitfire. 4 Link to comment Share on other sites More sharing options...
brucewhf Posted June 24, 2022 Author Share Posted June 24, 2022 On 6/23/2022 at 1:01 AM, Silent Film said: And if you fly horizontally the engine will never burn out anyways even on maximum power. I've done some tests, it turns out that the engine temp heavily depends on environment temp. If outside temp is 4 degrees celsius, engine nealy never quits with both switches on. If 30 degrees celsius, the engine will definitely burn out soon with maximum power setting, no matter how. Link to comment Share on other sites More sharing options...
grafspee Posted June 24, 2022 Share Posted June 24, 2022 (edited) 12 hours ago, brucewhf said: I've done some tests, it turns out that the engine temp heavily depends on environment temp. If outside temp is 4 degrees celsius, engine nealy never quits with both switches on. If 30 degrees celsius, the engine will definitely burn out soon with maximum power setting, no matter how. Ofc it is, when air goes through radiator it transfer heat from coolant in to air, transfer rate depends on mass air flow and difference between coolant temp and ambient air temp. Very high ambient temp will slower heat exchange, making radiator less effective. Edited June 24, 2022 by grafspee System specs: I7 14700KF, Gigabyte Z690 Aorus Elite, 64GB DDR4 3600MHz, Gigabyte RTX 4090,Win 11, 48" OLED LG TV + 42" LG LED monitor Link to comment Share on other sites More sharing options...
Magic Zach Posted July 4, 2022 Share Posted July 4, 2022 (edited) On 6/22/2022 at 12:54 PM, Doughguy said: Someone didnt read the manual Unless you have to run, its not really much of a problem if you enter a dogfight. During cruise with mp/rpm in the greens i have them in auto. He isn't wrong. In reality, the best gains between cooling and slickening the airframe are around 1/3rd open for the coolant shutter. The coolant radiator doesn't just cool regular engine coolant, but thr aftercoolant for the supercharger as well (and this doesn't even have its own cockpit guage). As coolant temp is hotter, aftercoolant temp will get hot as well, decreasing the air charge and your brake horsepower. Roughly 1/3 open is that sweet spot. However this isn't the case in DCS, as BHP-loss does not appear to be modeled. As such, you are faster the more closed those radiators are, as your BHP will not change with the rise in temperature. Regarding when to use it: I'm mostly fine leaving them in auto. They only actuate when there's a +/-6C Delta, so they're a bit clunky, but work well enough. When I want to go fast, and I mean <profanity>mahpants fast, it is worth closing those shutters manually until your temps are perhaps on the high end of the green. However, if you find yourself in a turning dogfight, it is better to open the shutters wide. Your slower airspeed means they won't drag your airframe nearly as much, plus you make gains in being able to firewall or WEP the Mustang for a good amount of tight low-speed turns. Edited July 4, 2022 by Magic Zach 1 Hardware: T-16000M Pack, Saitek 3 Throttle Quadrant, Homemade 32-function Leo Bodnar Button Box, MFG Crosswind Pedals Oculus Rift S System Specs: MSI MPG X570 GAMING PLUS, GTX 1070 SC2, AMD RX3700, 32GB DDR4-3200, Samsung 860 EVO, Samsung 970 EVO 250GB Modules: Ka-50, Mi-8MTV2, FC3, F/A-18C, F-14B, F-5E, P-51D, Spitfire Mk LF Mk. IXc, Bf-109K-4, Fw-190A-8 Maps: Normandy, Nevada [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
grafspee Posted July 4, 2022 Share Posted July 4, 2022 @Magic Zach i have high hopes for new cooling model, maybe those things will be sorted out finally. 1 System specs: I7 14700KF, Gigabyte Z690 Aorus Elite, 64GB DDR4 3600MHz, Gigabyte RTX 4090,Win 11, 48" OLED LG TV + 42" LG LED monitor Link to comment Share on other sites More sharing options...
M1Combat Posted July 5, 2022 Share Posted July 5, 2022 After racing the stang for a while I've just grown accustomed to manually running the coolant rad and I leave the oil rad open. Nvidia RTX3080 (HP Reverb), AMD 3800x Asus Prime X570P, 64GB G-Skill RipJaw 3600 Saitek X-65F and Fanatec Club-Sport Pedals (Using VJoy and Gremlin to remap Throttle and Clutch into a Rudder axis) Link to comment Share on other sites More sharing options...
Doughguy Posted July 5, 2022 Share Posted July 5, 2022 Funny enough i cant seem to set the radiator flaps to a certain state anyway unless they do it on their own in auto. Open opens them wide. Close closes them totally and auto well you guessed it. Cant cancel them out either. The switches arent spring loaded as ive read here or elsewhere iirc so its just 3 values you can switch around anyway. https://sr-f.de/ Link to comment Share on other sites More sharing options...
Ala13_ManOWar Posted July 5, 2022 Share Posted July 5, 2022 (edited) Last time I flew it, the switches are spring loaded, they work as supposed to, and it's only up to you how long you push them either for open or close positions. It couldn't be just fully open, or fully close, since it takes almost 30 seconds for the flaps to move from one extreme to the other, so if they do get fully opened, or fully closed, you pushed the switch that long to get them there. Edited July 5, 2022 by Ala13_ManOWar "I went into the British Army believing that if you want peace you must prepare for war. I believe now that if you prepare for war, you get war." -- Major-General Frederick B. Maurice Link to comment Share on other sites More sharing options...
Doughguy Posted July 5, 2022 Share Posted July 5, 2022 (edited) As said. Since ive started flying the mustang i flick the switch by mouse. If i switch it by click from auto to either open or close it stays in the pos until i click it again to any other pos. It doesnt jump into a neutral postion if i depress the mouse button. Im on stable but thats how its been for since ive started last september. Hence im a bit confused that people say its springloaded. Edited July 5, 2022 by Doughguy https://sr-f.de/ Link to comment Share on other sites More sharing options...
grafspee Posted July 5, 2022 Share Posted July 5, 2022 7 minutes ago, Doughguy said: As said. Since ive started flying the mustang i flick the switch by mouse. If i switch it by click from auto to either open or close it stays in the pos until i click it again to any other pos. It doesnt jump into a neutral postion if i depress the mouse button. Im on stable but thats how its been for since ive started last september. Hence im a bit confused that people say its springloaded. When activated by keyboard button yes, when used via mouse not, old bug i think System specs: I7 14700KF, Gigabyte Z690 Aorus Elite, 64GB DDR4 3600MHz, Gigabyte RTX 4090,Win 11, 48" OLED LG TV + 42" LG LED monitor Link to comment Share on other sites More sharing options...
Doughguy Posted July 5, 2022 Share Posted July 5, 2022 Just... wow.... https://sr-f.de/ Link to comment Share on other sites More sharing options...
Art-J Posted July 5, 2022 Share Posted July 5, 2022 Yeah, they're supposed to be and used to be springloaded when operated by keyboard or mouse, but the mouse mode got messed up along other controls back when DCS 2.7 was released and hasn't been fixed ever since. I actually find this "stuck switches" bug useful when I'm on the ground and just want to open the flaps all the way, but I understand it might be annoying in the air. i7 9700K @ stock speed, single GTX1070, 32 gigs of RAM, TH Warthog, MFG Crosswind, Win10. Link to comment Share on other sites More sharing options...
Magic Zach Posted July 6, 2022 Share Posted July 6, 2022 17 hours ago, grafspee said: When activated by keyboard button yes, when used via mouse not, old bug i think Yeah I can confirm this, I stumbled on it some 7-8 months ago but tbh, didn't report it Hardware: T-16000M Pack, Saitek 3 Throttle Quadrant, Homemade 32-function Leo Bodnar Button Box, MFG Crosswind Pedals Oculus Rift S System Specs: MSI MPG X570 GAMING PLUS, GTX 1070 SC2, AMD RX3700, 32GB DDR4-3200, Samsung 860 EVO, Samsung 970 EVO 250GB Modules: Ka-50, Mi-8MTV2, FC3, F/A-18C, F-14B, F-5E, P-51D, Spitfire Mk LF Mk. IXc, Bf-109K-4, Fw-190A-8 Maps: Normandy, Nevada [sIGPIC][/sIGPIC] Link to comment Share on other sites More sharing options...
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