The P40 thread

[Danziger]

Thread is up under the suggestions section.

Damned great thread, format, and purpose! I really hope you guys can get this done. It would be awesome in this sim.

[Venturi]

 

 

P-38J/L engines have blower gear ratio 8.10:1, V-1710-39 blower gear ratio was 8.8:1. We can not use same "detonation range chart" for both engines.

 

 

 

 

Yes you are right. And don't forget, also the fact that "auto mix" anything is specific to that application. So a/f mixes will differ depending on a/c. 

 

However, I doubt every engine has a specific chart giving the precise range at which rpm/manifold pressure will cause detonation. The point is, it does not need to be precise, rather a general indication of when mismatch occurs at general RPM and MAP.

 

It would be great if this was incorporated in some format as it is a basic fundamental principle of super or turbocharged engines.

[Farky]

Thanks, Farky Were there time limits specified in the manual for the ranges between maximum continuous up until war emergency?

 

Yes, there were time limits -

 

MAXIMUM CONTINUOUS  - 44 inHg @ 2600 rpm - no limit (obviously)

TAKE OFF - 54 inHg @ 3000 rpm - 5 minutes

MILITARY - 54 inHg @ 3000 rpm - 15 minutes

WAR EMERGENCY - 60 inHg @ 3000 rpm - 5 minutes

[Venturi]

You can now see that it is quite humorous that the max continuous limit for this engine is nearly "emergency" power for the P40E.

 

They use the same fuels...

Given the design strength of the V-1710-39 was 1500hp.

[Venturi]

See here for continuation:

 

https://forum.il2sturmovik.com/topic/30632-complex-engine-management-work-group/?do=findComment&comment=500286

[Venturi]

See attached.

 

From Whitney's excellent "Vees for Victory" and "Bloody Shambles" by Shores, the best researched day-to-day aerial combat history I've ever found.

[Farky]

Bloody Shambles books are excelent, this books and First Team are a must read for the initial period of the Asia-Pacific War.

 

Accounts from pilots about engine overboost in P-40E are very rare (and unfortunately usually also very vague), but they exist. At least one other US pilot did that on 8th December 1941 over Philippines - Elmer B. Powel Jr.. He find Zero on his tail, than "opened her wide-open, to the firewall" and escaped going 300 mph indicated. Another example is from 5th February 1942. Same situation, Jesse E. Hague with Zeros on tail was "gunning it up to about 60 inches", his speed was 310 mph indicated.

[ACG_KaiLae]

There's one more that I know of from the flying tigers where upon being jumped, he tried to evade but couldn't figure out why his engine had apparently failed and been unable to develop more than 10". Upon escaping, it was found the needle had broken past the pegs and it was more like 70". This was in the P-40B though.

[Gambit21]

Looks like we're getting somewhere. 

[4thFG_Cap_D_Gentile]

There's one more that I know of from the flying tigers where upon being jumped, he tried to evade but couldn't figure out why his engine had apparently failed and been unable to develop more than 10". Upon escaping, it was found the needle had broken past the pegs and it was more like 70". This was in the P-40B though.

 

No it was a 40E :-)

[MeoW.Scharfi]

Ace in a Flight on WoL with P40 

 

[DD_Arthur]

BIG S!!!

[216th_Lucas_From_Hell]

Scharfi, could you share some information on the flight gear you're using and, if applicable, input/sensitivity curves? That's some precise flying right there!

[MeoW.Scharfi]

 

 

Scharfi, could you share some information on the flight gear you're using and, if applicable, input/sensitivity curves? That's some precise flying right there!

 

 Yes, of course!

 

I use the Speedlink Airrow Flightstick.(The European one of the VKB Gladiator)

MFG Crosswind Pedals

 

No Track IR, i use thumbnail and mouse to look around.

And i have no curves anywhere. I fly fully linear without any curves or deadzones.

[216th_Lucas_From_Hell]

Cheers! I was seriously contemplating an Airrow, seeing it in action just about sold it

[keeno]

Amazing flying!

[Venturi]

At 5min and 5:50     Delayed action 6x 0.5BMG. 

 

Takes a lot of skill to fly the P40 like that without spinning, currently. Well done.

I do note you had a lot of E going into each of those encounters. Smart flying.

 

Can't wait for this bird to get some well-deserved love. 

[Boaty-McBoatface]

Meow that was great to see the .50cals smashing some airframes. Awesome video bud!

 

You're using thumbnail to move pilot position side side and up down are you?

 

What do you use for throttle if you have hand on the mouse?

Edited August 27, 2017 by temujin

[MeoW.Scharfi]

 

 

What do you use for throttle if you have hand on the mouse?

 

 

In heating dogfights i use the Thumbnail to move my head. in regular flight or when i have a hand free for a second i use the mouse. the 3D movements are on keyboard(default keys)

[Boaty-McBoatface]

Dealing some real death there with the hatswitch/thumbnail, Meow.

 

Which view mode do you use for the thumbnail? Gradual quick view or pan around?

 

Cheers

Edited August 28, 2017 by temujin

[Boaty-McBoatface]

Gents, how about the p40? How is the machine handling now?

[Jade_Monkey]

Yeah, particularly interested in this plane's new FM

[LLv24_Zami]

Gents, how about the p40? How is the machine handling now?

There you go: https://forum.il2sturmovik.com/topic/30807-how-it-tell-me/?p=503285

[MeoW.Scharfi]

IT still struggles in climbing because of the weak engine, but it turns and roll turns awesome! in high speeds as well. I had to rename my P40 video by adding (Old fm) at the end. :D

[Barnacles]

2.012: A lot better!

[OrLoK]

2.012: A lot better!

it is, isnt it?

[Barnacles]

I've tested the engine at various emergency power levels: Has anyone noticed any difference or is it the same?

Edited August 29, 2017 by 71st_AH_Barnacles

[=WH=PangolinWranglin]

I feel like it's better, but it could be placebo. Although, in my stream I managed to run in combat power for around 10 minutes (I think a little shorter, don't remember the time) https://youtu.be/KLInSP55098?t=3268

[Boaty-McBoatface]

No changes for motor

[Barnacles]

I feel like it's better, but it could be placebo. Although, in my stream I managed to run in combat power for around 10 minutes (I think a little shorter, don't remember the time) https://youtu.be/KLInSP55098?t

I think it's better too. Don't want to prejudice your findings though. I got 3min at 49.5"/3000rpm.

[Jason_Williams]

The P-40 aerodynamics were re-worked a bit especially air flow at certain angles of attack, but the engine was not tweaked. 

 

Jason

[Barnacles]

The P-40 aerodynamics were re-worked a bit especially air flow at certain angles of attack, but the engine was not tweaked. 

 

Jason

Thank you Jason. It'll be placebo then for me.

[Venturi]

I got 3min at 49.5"/3000rpm.

...the engine was not tweaked. 

 

[Barnacles]

 

I got 3min at 49.5"/3000rpm.

 

...the engine was not tweaked.

 

guess I lost count of all those minutes.

[SC_Manu653]

For me with the new FM on the P-40, I've got a blast flying it. Now I love it back. Very nice to control it with the rudder.

[[CPT]Pike*HarryM]

At max MP and RPM the engine still blows up around the 1 minute mark, but overall handling seems much better.

[Farky]

Gents, how about the p40? How is the machine handling now?

 

Marvelously. FM team did a great job, THIS is P-40E.

 

One P-40's typical feature is still missing (behavior in dive), but like I wrote, I like new FM a lot. 

[ZachariasX]

The P-40... is... a really, really useful plane now. It is controllable, it accellerates... Wow! Stiil, one has to be careful on the throttle, but down on the deck it is really neat.

 

Great job on the new FM! I also like it. Plus the new map is gorgeous.

 

I think this update should have been v3.0 instead of 2.012. It is huge deal what was accomplished. I am really impressed!

[Jade_Monkey]

Flies beautifully now

[=IL2AU=chappyj]

This is the most important change with the patch in my opinion

I love mah p40