Optimal Climb Speed for Japanese Props

Climbing at the specified Indicated Air Speed will allow you to reach 6 kilometers in the least amount of time.

Make sure to enable indicated air speed in the options before using information in this guide.

The chart contains most propeller airplanes, some jets, and most bombers.

For those of you who use Manual Engine Controls:

• Set all available radiator flaps to 100% (open).
  
• Set mixture to rich as appropriate.
  
• Set propeller pitch to 100%.
  
• Adjust mixture accordingly throughout flight to maintain maximum engine RPM and optimal horsepower, subject to altitude.
  
• Change supercharger gears at recorded horsepower output/elevation.

Refer to these for individual airplane quirks.

* <100% mixture not modeled.
** Do not exceed max RPM. No prop governor. Top RPM gives best horsepower output. Recommend using AEC.
*** Landing gear can be extended as airbrakes. Rips off at speeds above 740km/h.
**** Recommend using auto prop pitch to avoid over revving the engine. Otherwise, there is no prop governor to prevent over revving.

Based on chart made by The_Kiwi and information from data sheets available on War Thunder forums.

https://forum.warthunder.com/index.php?/forum/468-japan/
https://docs.google.com/spreadsheets/d/1hgHbWlSjefFhCqOUeGpoKQntdQDPG32X7XQo9EqDF00/

Support the original chart creator here:

Email: [e-mail]
YouTube channel: https://www.youtube.com/c/TheKiwi
Patreon page: https://www.patreon.com/The_Kiwi

Some additional contributions made by:
ZadaNotZaida

If you find any mistakes or have additional information contact me and I will add it to the chart.

IJNAF

Change your speed indicator to IAS in the options before using this chart.

For some airplanes the speed varies when WEP is active.

Name	100%(km/h)	WEP(km/h)	Super Charger Stage 2 [m]	Super Charger Stage 2 [hp]
A5M4 **	180	180
A6M2-N *	190	190
A6M2 mod. 11	200	200
A6M2	200	200
A6M3	220	220	100%: 3450 WEP: 2850	100%: 928 WEP: 1020
A6M3 mod. 22	220	220	100%: 3400 WEP: 2800	100%: 928 WEP: 1028
A6M3 mod. 22Ko	220	220	100%: 3400 WEP: 2800	100%: 928 WEP: 1028
A6M5	220	220	100%: 4000 WEP: 3400	100%: 931 WEP: 1033
A6M5 otsu	220	220	100%: 4000 WEP: 3400	100%: 931 WEP: 1033
A7M2 *	230	240	100%: 2500 WEP: 2200	100%: 1752 WEP: 2011
N1K1 Kyuofu *	240	240	100%: 3050 WEP: 2750	100%: 1268 WEP: 1404
N1K1-Ja	230	240	100%: 3000 WEP: 2100	100%: 1665 WEP: 1860
N1K2-J	240	240	100%: 3650 WEP: 2850	100%: 1583 WEP: 1754
N1K2-Ja	240	240	100%: 3650 WEP: 2850	100%: 1583 WEP: 1754
J2M2	230	230	100%: 2950 WEP: 2400	100%: 1405 WEP: 1694
J2M3	230	240	100%: 2950 WEP: 2400	100%: 1405 WEP: 1694
J2M5	240	250	100%: 2750 WEP: 2250	100%: 1374 WEP: 1653
J7W1 *	250	250
Kikka	540
F-86F-30	740
F-86F-40	740

IJAAF

Name	100%(km/h)	WEP(km/h)	Super Charger Stage 2 [m]	Super Charger Stage 2 [hp]
Ki-27 otsu **	210	220
Ki-43-I	220	220
Ki-43-II *	210	210	100%: 3850 WEP: 3700	100%: 918 WEP: 1024
Ki-43-III otsu	230	240	100%: 3250 WEP: 2250	100%: 1117 WEP: 1282
Ki-44-I	240	240
Ki-44-II hei	240	240	100%: 2750 WEP: 2300	100%: 1225 WEP: 1369
Ki-61-I ko	240	240
Ki-61-I otsu	240	240
Ki-61-I hei	240	240
Ki-61-I tei	240	240
Ki-61-II	250	260
Ki-84 ko *	250	250	100%: 3650 WEP: 2900	100%: 1591 WEP: 1744
Ki-84 otsu *	250	250	100%: 3650 WEP: 2900	100%: 1590 WEP: 1745
Ki-84 hei *	250	250	100%: 3650 WEP: 2900	100%: 1590 WEP: 1745
Ki-100	220	230	100%: 3250 WEP: 2400	100%: 1175 WEP: 1342
Ki-200	700
Mitsubishi T-2		1050
Mitsubishi F-1		1000

Heavy Fighters

Name	100%(km/h)	WEP(km/h)	Super Charger Stage 2 [m]	Super Charger Stage 2 [hp]
J1N1	220	220	100%: 3800 WEP: 3250	100%: 931 WEP: 1025
J5N1	280	280	100%: 3650 WEP: 3650
Ki-45 ko	230	230	100%: 3400 WEP: 3050	100%: 833 WEP: 958
Ki-45 otsu	230	230	100%: 3400 WEP: 3050	100%: 883 WEP: 958
Ki-45 tei	230	230	100%: 3400 WEP: 3050	100%: 883 WEP: 958
Ki-45 hei	230	230	100%: 3400 WEP: 3050	100%: 883 WEP: 958
Ki-83	250	250	100%: 4300 WEP: 3800	100%: 1885 WEP: 2052
Ki-102 otsu	275	270	100%: 3200 WEP: 3200
Ki-108	240	260
Ki-109	220	220	100%: 3700 WEP: 3450	100%: 1518 WEP: 1655

Light Bombers

Bomber climb rates from data sheets available on War Thunder forums.

Not all bombers are available, no super charger gear information is provided.

Name	100%(km/h)	WEP%(km/h)
F1M2	180
D3A1	240	240
Ki-32	220	220
D4Y1	250	250
D4Y2	250	250
D4Y3 Ko	250	250
B5N2	135
B6N1	260
B6N2	260
B7A2	250	250
P1Y1 mod. 11	260	260

Bombers

Bomber climb rates from data sheets available on War Thunder forums.

Not all bombers are available, no super charger gear information is provided.

Name	100%(km/h)	WEP%(km/h)
Ki-21-Ia	230	230
H6K4	193	193
H8K2	250	250
Ki-49-I	245
Ki-49-IIa	250
Ki-49-IIb	250
Ki-49-IIb/L	250
Ki-67	240	240
G4M1	220
G8N1	250

Premium

Name	100%(km/h)	WEP(km/h)	Super Charger Stage 2 [m]	Super Charger Stage 2 [hp]
Hagiri's A5M4 **	170	170
Ki-21-I Hei	240	240
Ki-44-II otsu	240	240	100%: 2800 WEP: 2300	100%: 1224 WEP: 1368
Ki-100-II	230	240
H8K3	250	250
A7M1 (NK9H) *	230	230	100%: 3700 WEP: 3100	100%: 1584 WEP: 1717
Ki-96	210	220	100%: 3250 WEP: 2200	100%: 1117 WEP: 1281
J2M4 Kai *	230	230	100%: 2700 WEP: 1450	100%: 1461 WEP: 1755
A6M5 Ko	220	220	100%: 4000 WEP: 3400	100%: 931 WEP: 1033
J2M5	240	240	100%:2750 WEP: 2250	100%: 1374 WEP: 1654
Ki-94-II *	240	240	100%: 13000 WEP: 12650	100%: 1878 WEP: 2248
Ki-87 *	250	250
J6K1	280	280	100%: 3200 WEP: 2900

Foreign Premium

Name	100%(km/h)	WEP(km/h)	Super Charger Stage 2 [m]	Super Charger Stage 3 [m]	Super Charger Stage 2 [hp]	Super Charger Stage 3 [hp]
F4U-1a *,***	250	250	100%: 1150 WEP: 100	100%: 5500 WEP: 4700	100%: 1800 WEP: 2095	100%: 1650 WEP: 1920
A7He1 *	200	200
Bf 109 E-7 **	220	220
Fw 190 A-5 ****	240	240
B-17E	217	217

[Tear My Soul 1]

You are the best OP. Thanks a lot.

[Not Allergic To Nuts]

A6M6 needed

[wastoid]

Sorry no info on the Ki-10.

[Not Allergic To Nuts]

Needs KI-10

[wastoid]

Added some airplanes from the War Thunder forums.

[Willeri]

I would also very much enjoy b6/b5 climb speeds being up

[sputniku ber to jako darek]

what about the b6/b5s?

[hamster muncher]

are there any values for the R2Y series?

[wastoid]

Adjust IAS not angle.

[SisterRed!]

Curious, how many degrees in pitch are we talking here? Usually 10° gives such results for the J6K1 (in Air RB)
Or should I adjust the angle and ensure the speed is the same?