Fulqrum Publishing Home   |   Register   |   Today Posts   |   Members   |   UserCP   |   Calendar   |   Search   |   FAQ

Go Back   Official Fulqrum Publishing forum > Fulqrum Publishing > IL-2 Sturmovik: Cliffs of Dover > Technical threads > FM/DM threads

FM/DM threads Everything about FM/DM in CoD

Reply
 
Thread Tools Display Modes
  #1  
Old 11-05-2012, 08:37 PM
xnomad xnomad is offline
Approved Member
 
Join Date: Jul 2010
Location: Sydney, Australia
Posts: 265
Default E4 CEM since patch

Forgive me for being a bit lazy here but I haven't had much time for this game lately.

I've played online maybe 3 quick times since the new patch and decided to be lazy and take the E4 with auto prop pitch as I'm out of practice. I've had my radiators open fully, encountered an enemy, closed radiators to half, engaged the WEP done a spiral climb and in a few seconds windscreen is covered in oil. Got fed up and quit the game.

I've just got too much going on to invest into going full nerd with this game as I used to do. So I thought can someone please explain what has changed in CEM and what I did wrong?

I think I also noticed that opening the water radiator fully didn't seem to change the coolant temp at all whilst cruising over the channel.
Reply With Quote
  #2  
Old 11-05-2012, 09:56 PM
VO101_Tom's Avatar
VO101_Tom VO101_Tom is offline
Approved Member
 
Join Date: Jul 2010
Location: Budapest, Hungary
Posts: 799
Default

3/4 is enough in all case, the half is too few (the water will slowly boil), the full is too much (slows the plane 10-20 km/h). Use wep only in emergency. Hope it helps
__________________
| AFBs of CloD 2[/URL] |www.pumaszallas.hu

i7 7700K 4.8GHz, 32GB Ram 3GHz, MSI GTX 1070 8GB, 27' 1920x1080, W10/64, TrackIR 4Pro, G940
Cliffs of Dover Bugtracker site: share and vote issues here
Reply With Quote
  #3  
Old 11-06-2012, 02:08 PM
5./JG27.Farber 5./JG27.Farber is offline
Approved Member
 
Join Date: Aug 2011
Posts: 1,958
Default

Did you open the oil cooler aswell?
Reply With Quote
  #4  
Old 11-06-2012, 03:53 PM
Kodoss Kodoss is offline
Approved Member
 
Join Date: Aug 2011
Posts: 262
Default

The CEM of the E-4 is wrong from the beginning. If you throttle down your RPM goes down and Ata stays by 1,3, which is wrong and would kill your engine in real life.

Ata and RPM should get reduced by reducing throttle.
A little example:

Your fly with 1,45Ata (1-min. power = emergency full throttle) with 2468 rpm
and you reduce your throttle to 1,35Ata 5-min. power(full throttle) then rpm goes automatically down to 2368 rpm and hold them.
If you reduce the throttle down to 1,30Ata then rpm will level off by 2326 rpm.
And so on.

Or else the manuals for the Bf 109 and Bf 110 (I think it was a Bf 110 manual/will search it later) wouldn't make any sense when they write "when in automatic mode fly after Ata settings".
Reply With Quote
  #5  
Old 11-06-2012, 05:58 PM
Kodoss Kodoss is offline
Approved Member
 
Join Date: Aug 2011
Posts: 262
Default

OK, the text says "Fly regarding to rpm, observe manifold pressure as control."

bf 110 E auto rpm-pressure.jpg

Source: "D.(Luft) T.2416/1 Bf 110 E mit 2 Motoren DB 601 A oder DB 601 N - Kurzbetriebsanleitung" from Oct. 1940

Last edited by Kodoss; 11-06-2012 at 06:00 PM.
Reply With Quote
  #6  
Old 11-06-2012, 08:27 PM
IvanK IvanK is offline
Approved Member
 
Join Date: Oct 2007
Location: Australia
Posts: 886
Default

Quote:
Originally Posted by Kodoss View Post
The CEM of the E-4 is wrong from the beginning. If you throttle down your RPM goes down and Ata stays by 1,3, which is wrong and would kill your engine in real life.

Ata and RPM should get reduced by reducing throttle.
A little example:

Your fly with 1,45Ata (1-min. power = emergency full throttle) with 2468 rpm
and you reduce your throttle to 1,35Ata 5-min. power(full throttle) then rpm goes automatically down to 2368 rpm and hold them.
If you reduce the throttle down to 1,30Ata then rpm will level off by 2326 rpm.
And so on.

Or else the manuals for the Bf 109 and Bf 110 (I think it was a Bf 110 manual/will search it later) wouldn't make any sense when they write "when in automatic mode fly after Ata settings".
What are you saying here its confusing me. In CLOD If I am in AUTO and I pull the throttle back both ATA and consequently RPM reduce. RPM is scheduled as a function of throttle position not ATA..... which I believe is correct in the simple DB601 Auto system (i.e. Non Kommandgerate which is far more comprehensive)

In addition reducing RPM before ATA (though not a good practice IRL) wont necessarily damage the engine unless you reach some detonation threshold of low rpm v ATA. I dont see how you can do this anyway in AUTO.

As to the statement ""Fly regarding to rpm, observe manifold pressure as control." what is your interpretation of this in terms of practical pilotage with AUTO in operation ? Are you saying the pilot uses the throttle to set an RPM and just accepts the ATA rather than setting an ATA and accepting the RPM ? ... I can sort of see the logic in this but only in an AUTO CSU system.

The convention with a standard (Non AUTO CSU) is to set ATA/BOOST/MAP to a desired value then set the desired RPM ... ideally with RPM leading the Boost on the way up and lagging on the way down.

Last edited by IvanK; 11-06-2012 at 08:29 PM.
Reply With Quote
  #7  
Old 11-06-2012, 06:28 PM
arthursmedley arthursmedley is offline
Approved Member
 
Join Date: Oct 2007
Location: devon, uk
Posts: 326
Default

Quote:
Originally Posted by 5./JG27.Farber View Post
Did you open the oil cooler aswell?
This.
Reply With Quote
  #8  
Old 11-07-2012, 07:35 AM
xnomad xnomad is offline
Approved Member
 
Join Date: Jul 2010
Location: Sydney, Australia
Posts: 265
Default

Quote:
Originally Posted by 5./JG27.Farber View Post
Did you open the oil cooler aswell?
yep oil and water both set on 1/2 just like I've always done in this sim.
Reply With Quote
  #9  
Old 11-07-2012, 10:26 AM
notafinger! notafinger! is offline
Approved Member
 
Join Date: Feb 2011
Posts: 124
Default

Quote:
Originally Posted by xnomad View Post
I've had my radiators open fully, encountered an enemy, closed radiators to half, engaged the WEP done a spiral climb and in a few seconds windscreen is covered in oil.
WEP + steep climb + 1/2 open radiators = dead engine

If you are in a hard climb and your airspeed drops below 250ish you need to open rads or you will overheat quickly. Using WEP will aggravate it more as will higher alt.
Reply With Quote
  #10  
Old 11-07-2012, 01:07 PM
Kurfürst Kurfürst is offline
Approved Member
 
Join Date: Oct 2007
Posts: 705
Default

There's some sort of bug with the E-4 auto prop system - namely that by default it just doesn't work. Dis-engaging AUTO and adjusting the propeller angle manually a bit and then switching back to AUTO fixes it though... >/
__________________
Il-2Bugtracker: Feature #200: Missing 100 octane subtypes of Bf 109E and Bf 110C http://www.il2bugtracker.com/issues/200
Il-2Bugtracker: Bug #415: Spitfire Mk I, Ia, and Mk II: Stability and Control http://www.il2bugtracker.com/issues/415

Kurfürst - Your resource site on Bf 109 performance! http://kurfurst.org
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 04:22 PM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright © 2007 Fulqrum Publishing. All rights reserved.