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– Yak-1B, Yak-7B, Yak-9, Yak-9B, Yak-9T, Yak-9K, Yak-9M, Yak-3, Yak-3P, Yak-3(e): These planes benefit from MEC over AEC with better cooling preventing overheating. AEC radiators are incorrectly set to 111/111°C instead of 109/109°C causing the planes to overheat. Time wear: (-4/-4°C) @ 16min. Fuel: 30min.
*Mixture should be lowered to (Mix30) above 6500m to extend ceiling.
*Engine off with (45sec) in white, then back on, usually resolves (Per color) overheat wear.
*Yellow overheat = (5min). (3:30min) after engine on/off power cycle. (2min if stacked).
*Orange overheat = (3min).
*Prop97 had same performance as Prop100 but much cooler and prevents overheating. Prop97 can be used to up to 5000m, then Prop100 should be used
*For initial climb at start, Prop97 and chart radiator value can be used up to 3000m. At 3000m switch to ½ radiator chart value. At 5000m adjust radiator to 0Rad with Prop100. Engine may briefly turn yellow between 3000m and 4000m. This will provide best climb rate comparable to AEC and preserve engine health.
*Can usually close Rads to 1/2 chart value at over 4000-4500m for better climb/speed.
*Can usually close Rads completely at over 5000-5500m for better climb/speed.
*Super charger gear shifts are the same for Prop100 and Prop97
*Using AEC with Throttle96.4% to keep engine in white, had worst performance with (+2-3sec) per 1000m climb.
Details:
– Yak-1B:
Engine hp drop: 3300m.
AEC:520, MEC:518, 0Rad:533
Prop97 with Rad9/9 @ 1000m = 527 kph (Cold)
Prop97 with Rad24/24 @ 1000m = 518 kph (Mod)
Prop97 with Rad36/36 @ 1000m = 511 kph (Hot)
– Yak-7B:
Engine hp drop: 3300m.
AEC:507, MEC:505, 0Rad:518
Prop97 with Rad9/9 @ 1000m = 512 kph (Cold)
Prop97 with Rad24/24 @ 1000m = 505 kph (Mod)
Prop97 with Rad36/36 @ 1000m = 498 kph (Hot)
– Yak-9:
Engine hp drop: 3300m.
AEC:508, MEC:506, 0Rad:519
Prop97 with Rad9/9 @ 1000m = 513 kph (Cold)
Prop97 with Rad24/24 @ 1000m = 506 kph (Mod)
Prop97 with Rad36/36 @ 1000m = 499 kph (Hot)
– Yak-9B:
Engine hp drop:3200m
AEC:524, MEC:522, 0Rad:537
Prop97 with Rad9/9 @ 1000m = 530 kph (Cold)
Prop97 with Rad24/24 @ 1000m = 522 kph (Mod)
Prop97 with Rad36/36 @ 1000m = 514 kph (Hot)
– Yak-9T:
Engine hp drop: 3300m.
AEC:521, MEC:519, 0Rad:535
Prop97 with Rad9/9 @ 1000m = 528 kph (Cold)
Prop97 with Rad24/24 @ 1000m = 519 kph (Mod)
Prop97 with Rad36/36 @ 1000m = 512 kph (Hot)
– Yak-9K:
Engine hp drop: 3300m.
AEC:508, MEC:506, 0Rad:520
Prop97 with Rad9/9 @ 1000m = 514 kph (Cold)
Prop97 with Rad24/24 @ 1000m = 506 kph (Mod)
Prop97 with Rad36/36 @ 1000m = 500 kph (Hot)
– Yak-9M:
Engine hp drop: 3100m.
AEC:538, MEC:535, 0rad:552.
Prop97 with Rad9/9 @ 1000m = 546 kph (Cold)
Prop97 with Rad26/26 @ 1000m = 535 kph (Mod)
Prop97 with Rad36/36 @ 1000m = 529 kph (Hot)
– Yak-3:
Engine hp drop: 3100m.
AEC:560, MEC:557, 0Rad:573
Prop97 with Rad9/9 @ 1000m = 567 kph (Cold)
Prop97 with Rad26/26 @ 1000m = 557 kph (Mod)
Prop97 with Rad36/36 @ 1000m = 550 kph (Hot)
– Yak-3P:
Engine hp drop: 3100m.
AEC:555, MEC:552, 0Rad:568
Prop97 with Rad9/9 @ 1000m = 562 Kph (Cold)
Prop97 with Rad26/26 @ 1000m = 552 Kph (Mod)
Prop97 with Rad36/36 @ 1000m = 545 Kph (Hot)
– Yak-3(e):
Engine hp drop: 3100m.
AEC:562, MEC:559, 0Rad:576
Prop97 with Rad9/9 @ 1000m = 569 kph (Cold)
Prop97 with Rad26/26 @ 1000m = 559 kph (Mod)
Prop97 with Rad36/36 @ 1000m = 552kph (Hot)
– Yak-3U: This plane benefits from MEC over AEC overall. Top speed increase of over 20kph. AEC has chaotic radiator behavior. This plane gets significantly hotter the lower it goes and the faster it goes. Under 2600m the plane will start to heat up quickly. It is an option to use Prop90 under 2600m for much better cooling and better top speed (+2/+3 kph) at the cost of adding (+2/+2sec) per 1000m of climb. Prop90 can be used to 2600m, then Prop100 should be used. Time wear: (-0/-3°C)/15min. Fuel: 30min. Engine hp drop: 4900m.
*Engine off with (30sec) in white, then back on, usually resolves (Per color) overheat wear.
*Orange overheat = (3min).
*MEC chart settings will generally not exceed orange overheat when using WEP.
*Radiator can be completely closed above 3000m and stay cool.
*WEP does not function with second stage super charger
*This plane shares engine characteristics of the La-7
Details:
AEC:590/600, MEC:587/616, 0Rad:620
Prop100 with Rad8/8 @ 1000m = 587/616WEP kph (Cold, Mod, Hot)
– Yak-9U, Yak-9P, Yak-9UT: These planes benefit from MEC over AEC overall. These planes run notably hotter than others. AEC radiators are incorrectly set to 111/111 instead of 109/109 causing the planes to overheat. AEC mismanages the radiator where WEP does little or actually makes performance worse. Prop90 has approx the same climb rate as Prop100 (+1/-0.5sec) per 1000m, with better speed while keeping the engine much cooler. Prop90 can be used to 4500m, then Prop100 should be used. MEC settings allow for prolonged WEP use while generally not exceeding yellow overheat. Keep speed above 300-330kph to prevent overheating. Fuel: 30min. Engine hp drop: 4900m.
*Turning engine off with (45sec) in white, then back on, usually resolves (Per color) overheat wear.
*Yellow overheat = (5min). (3:30min) after engine on/off power cycle. (2min if stacked).
*Orange overheat = (3min).
*Cold maps: MEC chart settings allow for Infi-WEP.
*Mod & Hot maps: MEC chart settings will generally not exceed yellow overheat when using WEP.
Supplemental Notes:
*Slight drop in hp between 2000-3000m using Prop90 vs. Prop100 approx (+3/+2sec) which mostly contributes why climb times are worse by (+0.5/+0.5sec) when averaged out. Prop94 mostly resolves this issue but causes overheat issues.
*Prop94 had best climb rate, followed closely by Prop93, but runs outside of cooling capabilities and compromising too much speed. Can be used up to 4700m then Prop100 should be used. Prop93 is a (-0.5/-0.5sec) better climb per 1000m compared to Prop90. Prop94 is (-0.5/-0.5sec) better climb per 1000m compared to Prop93.
*Prop94, Prop93 Supercharger gear shifts: 2700/2400m, hp drop: 4700m.
*Setting radiator to Rad100/100 with WEP had worse climb than not using WEP at all with chart settings.
*Yak-9U runs slightly hotter than other two versions radiator adjusted accordingly
*Prop100 Supercharger gear shifts: 3000/2600m
– I-16 type 27, I-16 type 28: You can set this to Rad -/100 at all times since there is no perceivable drag produced from radiator. Lowering prop pitch does not help performance, leaving at Prop100 is recommended. Climb is done at 280kph but due to the high amount of drag of this aircraft a lower speed to climb at is suggested, even 270kph has significant better results in climb times. Time wear: (-0/-0°C) @ 16min. Fuel: 30min
*Engine off with (5sec) in white, then back on, usually resolves (Per color) overheat wear.
*Orange overheat = (3min)
Details:
– I-16 type 27:
Engine hp drop: 4200m
*Cold maps: MEC chart settings allow for Infi-WEP
*Mod maps: MEC chart settings will stay white at 100% throttle and generally not exceed orange overheat when using WEP.
*Hot maps: MEC chart settings will stay white at 100% throttle and will red overheat when using WEP.
– I-16 type 28:
Engine hp drop: 4700m.
*I-16 type 28 runs much hotter with WEP than I-16 type 27, very short WEP duration before engine turns red on all maps.
Supplemental Notes:
*Elev/pitch, Significant increase needed using flight stick. Very unstable with Auto trim on, especially pitching up.
– I-185 (M-82): This planes runs hot. Prop94 had same performance as Prop100 up to 5700m. Prop94 can be used up to 5700m then Prop100 should be used. Time wear: (-10/-15°C) @ 16min. Fuel: 30min. Engine hp drop: 5900m
*Mixture should be lowered to (Mix30) above 6100m to extend ceiling.
*Engine off with (15sec) in white, then back on, usually resolves (ALL) overheat wear.
*Yellow overheat = (5min).
*Orange overheat = (3min).
*Engine gets hotter higher alt and faster speed with temps peaking approx 5700-5900m and starts to cool at approx 6700m. 5700-6700m altitude range can be challenging to manage engine temps.
Supplemental Notes:
*Prop100 supercharger change (4100/2900m).
*Pitches down slightly with Auto trim on
– I-185 (M-71): This planes runs hot. Heat had to be mitigated with Prop90. Prop90 can be used up to 4800m with approx (+2.5/+2.25sec) per 1000m climb time. Prop90 can be used to 4800m, then Prop100 should be used. Time wear: (-0/-0°C) @ 16min. Fuel: 30min. Engine hp drop: 5300m.
*Mixture should be lowered to (Mix30) above 6100m to extend ceiling.
*Engine off with (15sec) in white, then back on, usually resolves (ALL) overheat wear.
*Yellow overheat = (10min).
*Orange overheat = (3min).
*Engine gets hotter as you go higher/faster with temps peaking approx 5100-5600m and starts to cool at approx 6600m. 5100-6600m altitude range can be challenging to manage engine temps.
Supplemental Notes:
*Prop100 supercharger change (3400/1800m).
*Pitches down slightly with Auto trim on
– I-225: This plane benefits from MEC over AEC overall. Prop90 has better cooling than Prop100 for extended WEP use. Similar speed (-2/+0kph) and climb rate (+1.3/+0.33sec) per 1000m added climb time. Prop90 can be used to 5000m, then Prop100 should be used. Time wear: (-5/-10°C) @ 16min. Fuel: 30min Engine hp drop: 8900m.
*Mixture should be lowered to (Mix30) above 6100m to extend ceiling.
*Engine off with (15sec) in white, then back on, usually resolves (Per color) overheat wear.
*Orange overheat = (3min).
*Cold maps: MEC chart settings allow Infi-WEP
*Keep speed over 330-350kph for adequate cooling. Hot maps especially.
– LaGG-3-66: This plane benefits from MEC over AEC overall. This plane has better climb in addition to better speed and cooling with Prop85. Super charger gear shift are 1800m for all prop pitch between Prop80-100. Time wear: (-4/-4°C) @ 16min. Fuel: 30min. Engine hp drop:3100m.
*Mixture should be lowered to (Mix30) above 6800m to extend ceiling.
*Engine off with (45sec) in white, then back on, usually resolves (Per color) overheat wear.
*Yellow overheat = (5min). (3:30min) after engine on/off power cycle. (2min if stacked).
*Orange overheat = (3min).
*This plane does not overheat in general, the above temp thresholds are generally not needed.
– La-5: These planes benefit from MEC over AEC overall. Prop90 was much cooler, had better top speed and better climb rate than Prop100 up to 5800m. (-1/-0sec) per 1000m climb Prop90 can be used to 5800m, then Prop100 should be used. These planes get significantly hotter the lower and faster they go, especially under 1700m. Time wear: (-4/-0°C)/16min.Fuel: 30min. Engine hp drop: 5800m.
*Engine off with (45sec) in white, then back on, usually resolves (Per color) overheat wear.
*Yellow overheat = (9min). (2:30min) after engine on/off power cycle. (1:30min) if stacked.
*Orange overheat = (3min).
*Cold maps: MEC chart settings allow for Infi-WEP.
*Mod & Hot maps: MEC chart settings will generally not exceed yellow overheat when using WEP.
*Super charger gear shifts and hp drop are the same for Prop100 and Prop90.
*Radiator can be completely closed above 1700m and stay cool.
*WEP does not function with second stage super charger.
– La-5F: These planes benefit from MEC over AEC overall. Prop90 was much cooler, had better top speed and better climb rate than Prop100 up to 5800m. (-1/-0sec) per 1000m climb Prop90 can be used to 5800m, then Prop100 should be used. These planes get significantly hotter the lower and faster they go, especially under 1700m. Time wear: (-0/-2°C)/16min. Fuel: 30min. Engine hp drop: 5800m.
*Engine off with (30sec) in white, then back on, usually resolves (Per color) overheat wear.
*Yellow overheat = (6-7min). (3min) if stacked.
*Orange overheat = (3min).
*MEC chart settings allow for Infi-WEP.
*Super charger gear shifts and hp drop are the same for Prop100 and Prop90.
*Radiator can be completely closed above 1700m and stay cool.
*WEP does not function with second stage super charger.
– La-5FN, La-7, La-7B-20: These planes get significantly hotter the lower they go and the faster they go. Under 2700m the plane will start to heat up quickly. Time wear: (-2/-4°C)/16min. Fuel: 30min. Engine hp drop: 5100m.
*Engine off with (30sec) in white, then back on, usually resolves (Per color) overheat wear.
*Orange overheat = (3min).
*MEC chart settings will generally not exceed orange overheat when using WEP.
*La-7, La-7B-20 do not control stiffen at high speed like the La-5FN.
*Radiator can be completely closed above 3000m and stay cool.
*WEP does not function with second stage super charger.
Details:
– La-5FN:
AEC:528/549, MEC:527/554, 0Rad:557
Prop100 with Rad8/8 @ 1000m = 527/554WEP kph (Cold, Mod, Hot)
***Infi-WEP settings: ***
Prop100 with Rad16/32 @ 1000m = 521/548WEP kph (Cold)
– La-7,La-7B-20:
AEC:571/593, MEC:569/598, 0Rad:601
Prop100 with Rad8/8 @ 1000m = 569/598WEP kph (Cold, Mod, Hot)
***Infi-WEP settings: ***
Prop100 with Rad16/32 @ 1000m = 562/590WEP kph (Cold)
– La-9: This plane gets significantly hotter the lower and faster it goes. AEC will not open the radiator at all when using WEP causing the engine to overheat. Under 2600m the plane will start to heat up quickly. Time wear: (-0/-2°C)/16min. Fuel: 30min. Engine hp drop: 5100m.
*Engine off with (30sec) in white, then back on, usually resolves (Per color) overheat wear.
*Orange overheat = (3min).
*MEC chart settings will generally not exceed orange overheat when using WEP.
*Radiator can be completely closed above 3000m and stay cool.
*WEP does not function with second stage super charger.
Details:
AEC:593/632, MEC:588/625, 0Rad:632
Prop100 with Rad8/8 @ 1000m = 590/627WEP kph (Cold)
Prop100 with Rad12/12 @ 1000m = 588/625WEP kph (Mod)
Prop100 with Rad16/16 @ 1000m = 585/621WEP kph (Hot)
– Hurricane Mk IIB: This plane benefits from MEC over AEC overall. AEC uses Prop90 for 100%throttle and Prop100 for WEP. Prop90 reduces performance and is not ideal. Time wear: (-12/-8°C) @ 16min. Fuel: 30min. Engine hp drop: 5900m.
*MEC chart settings allow Infi-WEP
*Speed should be kept above 330kph to prevent overheating.
*Prop97 had same performance as Prop100 up to 5000m. Prop97 can be used to 5000m, then Prop100 should be used.
*Super charger gear shifts are the same for Prop97 and Prop100.
– I-153P: Prop82 was much cooler, had better top speed and better climb rate than Prop100 up to 4500m. (-1/-1sec) per 1000m climb Prop82 can be used to 4500m, then Prop100 should be used. Time wear: (-0/-0°C) @ 16min. Fuel: 30min. Engine hp drop: 4800m.
*Engine off with (5sec) in white, then back on, usually resolves (Per color) overheat wear.
*Orange overheat = (3min)
*Radiator can be set to Rad100/100 at all times since there is no perceivable drag produced from radiator.
*Climb is done at 280kph but, due to the high amount of overall drag of this aircraft, a lower speed will improve climb rate.
*Super charger gear shifts are the same between Prop100 and Prop82
– I-16 type 28:
Refer to I-16 type 27, I-16 type 28 section earlier in guide.
– P-39K-1: This plane benefits from MEC over AEC overall. Prop94 allows for Infi-WEP and had better climb than Prop100 (-1/-0.3sec) per 1000m climb, better top speed at 1000m (+6/+2kph), and lower temperatures up to 3500m. Prop94 can be used up to 3500m, then Prop100 should be used.. Time wear: (-1/-1°C) @ 5min. Fuel: 30min. Engine hp drop: 4400m.
*MEC chart settings allow Infi-WEP
Details:
AEC:464/512, MEC:470/514, 0Rad:518
***Infi-WEP settings: ***
Prop94 with Rad4/4 @ 1000m = 473/518WEP kph (Cold) (up to 3500m)
Prop94 with Rad16/16 @ 1000m = 470/514WEP kph (Mod) (up to 3500m)
Prop94 with Rad24/24 @ 1000m = 466/511WEP kph (Hot) (up to 3500m)
Supplemental Notes:
Yaws left on takeoff even with AutoTrim on.
– Yak-9M:
Refer to Yak-9, Yak9M section earlier in guide.
— P-47D-27: This plane benefits from MEC over AEC overall. Prop85 should be used up to 8800m, then raised to Prop90. Time wear: (-5/-9°C) / 16min. WEP: 15min. Fuel: 30min. Engine hp drop: 9300m.
*Mixture should be set to (Mix90) at all alts between 0-9500m, for max hp to engine.
*Mixture should be lowered to (Mix45) above 9500m to extend ceiling.
*Engine off with (30sec) in white, then back on, usually resolves (Per color) overheat wear.
*Yellow overheat = (10min). (6min) after engine on/off power cycle.
*Cold maps: MEC chart settings allow Infi-WEP.
*Mod & Hot maps: MEC chart settings allow Infi-WEP for first (15min) before Time wear has an effect on Mod & Hot maps. MEC settings should generally provide for an engine to last for entire (25-30min) Air RB match. If time wear lowers engine to orange, simply power cycle engine.
Details:
AEC:519/547, MEC:530/558, 0Rad:560
***Infi-WEP settings: ***
Prop85 with Rad4/4 @ 1000m = 532/559WEP kph (Cold) (Infi-WEP)
Prop85 with Rad8/8 @ 1000m = 530/558WEP kph (Mod) (Infi-WEP for first 15min)
Prop85 with Rad16/16 @ 1000m = 527/554WEP kph (Hot) (Infi-WEP for first 15min)
Supplemental Notes:
WEP hp drop: 8800m.
– Yak-3(e):
Refer to Yak-3, Yak-3(e) section earlier in guide.
– ITP (M-1): This plane benefits from MEC over AEC overall. This plane runs notably hotter than others and prop pitch was lowered from Prop70 to Prop64, with similar climb/acceleration as Prop70, making heat manageable. Prop64 can be used to 6400m, then Prop70 should be used. Prop70 is the max prop pitch that can be used without destroying the engine. WEP has little to no effect above 7000m. Engine seems to get hotter the faster the plane travels. Time wear: (-0/-0°C) / 16min. Fuel: 30min. Engine hp drop: 6400m.
*Mixture should be set to (Mix80) at all alts.
*Engine off with (5sec) in white, then back on, usually resolves (Per color) overheat wear.
*Orange overheat = (3min).
*Cold maps: MEC chart settings allow Infi-WEP
*Mod maps: MEC chart settings will stay white at 100% throttle and generally not exceed orange overheat when using WEP.
*Hot maps: MEC chart settings will stay white at 100% throttle and will red overheat when using WEP. After switching to Prop70 at 6400m, engine may start to turn yellow, over time between 6400-6900m.
Details:
AEC:500/521, MEC:497/523, 0Rad:539
Prop64 with Rad75/75 @ 1000m = 500/527WEP Kph (Cold) (Infi-WEP)
Prop64 with Rad100/100 @ 1000m = 497/523WEP Kph (Mod)
Prop64 with Rad100/100 @ 1000m = 497/523WEP Kph (Hot)
– Yak-3 (VK-107): This plane benefits from MEC over AEC overall. This plane runs notably hotter than others. AEC radiators are incorrectly set to 111/111 instead of 109/109 causing the plane to overheat. AEC mismanages the radiator where WEP does little or actually makes performance worse. Prop94 has approx the same climb rate as Prop100 while keeping the engine much cooler. Prop94 can be used to 4700m, then Prop100 should be used. Time wear: (-0/-0°C) @ 16min. Fuel:30min. Engine hp drop: 4900m.
*Mixture should be lowered to (Mix30) above 6700m to extend ceiling.
*Engine off with (45sec) in white, then back on, usually resolves (Per color) overheat wear.
*Yellow overheat = (5min). (3:30min) after engine on/off power cycle. (2min if stacked).
*Orange overheat = (3min).
*MEC chart settings will generally not exceed yellow overheat when using WEP.
*Keep speed above 300-330kph to prevent overheating.
*WEP has little effect on climb rate above 6000m.
*Shares characteristics of Yak-9P and Yak-9UT
Details:
AEC:591/586, MEC:586/594, 0Rad:622
Prop94 with Rad12/12 @ 1000m = 601/613WEP Kph (Cold) (Yellow Infi-WEP)
Prop94 with Rad40/40 @ 1000m = 584/594WEP Kph (Mod) (Yellow Infi-WEP)
Prop94 with Rad60/60 @ 1000m = 570/582WEP Kph (Hot) (Yellow Infi-WEP)
***Infi-WEP settings: ***
Prop94 with Rad24/24 @ 1000m = 593/604WEP kph (Cold)
Supplemental Notes:
Prop100 Supercharger gear shifts: 2900/2500m