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mike_espo
10-17-2007, 10:18 AM
Regarding P-39s P-40s: I flew these two planes offline on crimea map. Had them both firewalled at 100% pitch with radiators closed for 5+ minutes.... No overheat! http://forums.ubi.com/groupee_common/emoticons/icon_confused.gif

If I did that with the Zero, or the Ki-43s I would overheat in less than a minute.

Is this normal?

P-39D1, P-40C planes tested

Blood_Splat
10-17-2007, 10:19 AM
uber coolant. http://forums.ubi.com/groupee_common/emoticons/icon_biggrin.gif

mike_espo
10-17-2007, 10:21 AM
Originally posted by Blood_Splat:
uber coolant. http://forums.ubi.com/groupee_common/emoticons/icon_biggrin.gif

Must be!! http://forums.ubi.com/images/smilies/clap.gif

JG53Frankyboy
10-17-2007, 10:22 AM
yes, thats normal - the ingame planes behave very different in their CEM.

some do overheat at 100% pitch, 100% power cooler open - others dont overheat at 100% pitch , 110% power cooler open or closed.

other will run around 10min in overheat without engine dameage , others cant run 4 min in overhat before engine damage.

solution, learn your plane , make your own "plane handbook".

BillyTheKid_22
10-17-2007, 10:41 AM
http://www.hoofsperformance.wwiionline.com/windtunnelcharts/P39.ht25.gif



http://www.hoofsperformance.wwiionline.com/windtunnelcharts/P39.ht30.gif



http://www.hoofsperformance.wwiionline.com/windtunnelcharts/P39.ht29.gif

Freelancer-1
10-17-2007, 10:43 AM
I haven't flown the D-1 as much as I should but from my experience in the N-1 and Q series your results seem unusual.

In the N-1, I am constantly working the radiator flaps and jockeying the throttle to keep the engine from over heating. Closing the flaps at full throttle will spin up the temp too high in under a minute. It's a tough bird to keep in the right temp range.

I'll have to take the D-1 out for a spin and see this for myself.

As for the P-40, I never fly them <shrugs>, but I understand they are fairly forgiving in the CEM department.

Divine-Wind
10-17-2007, 11:05 AM
That they are. One of the reasons I love 'em so much. http://forums.ubi.com/images/smilies/16x16_smiley-very-happy.gif

CzechTexan
10-17-2007, 12:00 PM
This topic made me think of something. Is winter and summer temperature modelled to have affects on engine cooling? Would flying in Murmansk be cooler than a crimea summer?
Just something that makes me go hmmm.

DKoor
10-17-2007, 12:07 PM
Originally posted by CzechTexan:
This topic made me think of something. Is winter and summer temperature modelled to have affects on engine cooling? Would flying in Murmansk be cooler than a crimea summer?
Just something that makes me go hmmm. +1
It affects overheat be sure.

CzechTexan
10-17-2007, 07:30 PM
Originally posted by DKoor:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by CzechTexan:
This topic made me think of something. Is winter and summer temperature modelled to have affects on engine cooling? Would flying in Murmansk be cooler than a crimea summer?
Just something that makes me go hmmm. +1
It affects overheat be sure. </div></BLOCKQUOTE>

Well that's interesting and something I never thought about before. No wonder my P-400 Airacobra in Murmansk didn't overheat. I just thought it was an uber-cobra.

Polyperhon
10-20-2007, 05:32 PM
The freelancer is studied, at least one guy that really proves that he worked on the P-39.You need to play with the engine managment all the time to prevent overheating if you really want to extract every hp available.Low speed helps faster overheating.When you slow you better open the radiator when you want to accelerate and close it again after ~220kts.It (usually) helps earning some time before overheating again.
For the P-40, I think that had a very effective cooling system.This is one of the reasons that was preffered over the P-39 in the hot climate operations that USAAF and RAF needed them (North Africa, New Guinea etc.)

DKoor
10-20-2007, 06:18 PM
Originally posted by mike_espo:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Blood_Splat:
uber coolant. http://forums.ubi.com/groupee_common/emoticons/icon_biggrin.gif

Must be!! http://forums.ubi.com/images/smilies/clap.gif </div></BLOCKQUOTE>Nothing beats Spitfires Godlike rads.

VW-IceFire
10-20-2007, 07:27 PM
Originally posted by DKoor:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by mike_espo:
<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Blood_Splat:
uber coolant. http://forums.ubi.com/groupee_common/emoticons/icon_biggrin.gif

Must be!! http://forums.ubi.com/images/smilies/clap.gif </div></BLOCKQUOTE>Nothing beats Spitfires Godlike rads. </div></BLOCKQUOTE>
Unless your in a Spitfire Mark V.