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TinkerToy__
03-30-2004, 01:39 AM
Hi there,

I began using prop pitch etc. last night for the first time ever (i've been playing IL2 and FB over a year) and it was interesting how the plane responded (flying the P-51 and the Spit) - even though it was tough at first. I sort of understand the principles behind it but I was wondering if there are any good tutorials etc. around, especially for any of the American/British aircraft. I believe I saw one on mudmovers before but the site is down http://ubbxforums.ubi.com/infopop/emoticons/icon_frown.gif

Can anyone help me out?

TT

TinkerToy__
03-30-2004, 01:39 AM
Hi there,

I began using prop pitch etc. last night for the first time ever (i've been playing IL2 and FB over a year) and it was interesting how the plane responded (flying the P-51 and the Spit) - even though it was tough at first. I sort of understand the principles behind it but I was wondering if there are any good tutorials etc. around, especially for any of the American/British aircraft. I believe I saw one on mudmovers before but the site is down http://ubbxforums.ubi.com/infopop/emoticons/icon_frown.gif

Can anyone help me out?

TT

BlindHuck
03-30-2004, 01:58 AM
Do you get faster speeds at less than 100% rpm? I haven't bothered to check. In RL you don't (for aircraft you mention). http://ubbxforums.ubi.com/images/smiley/16x16_smiley-indifferent.gif

"I race full real exclusively in IL2:The Forgotten Battles." - Mark Donohue

TinkerToy__
03-30-2004, 03:24 AM
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by BlindHuck:
Do you get faster speeds at less than 100% rpm? I haven't bothered to check. In RL you don't (for aircraft you mention). http://ubbxforums.ubi.com/images/smiley/16x16_smiley-indifferent.gif

"I race full real exclusively in IL2:The Forgotten Battles." - Mark Donohue<HR></BLOCKQUOTE>

Actually I was wondering about that. I found that at certain prop pitches I was getting no increase in RPM from increasing the throttle. I was maxed out it seemed. Again, I am no expert but I was hoping a tutorial might explain why that is, as the obvious thing that comes into your head is 'more juice=more rpms'.

TT.

Tully__
03-30-2004, 04:01 AM
You need to read this article (http://www.avweb.com/news/columns/182082-1.html) on how propellors work.

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[This message was edited by Tully__ on Tue March 30 2004 at 03:31 AM.]

Maple_Tiger
03-30-2004, 04:03 AM
You notice in the manuel that most planes use CPS system.

Page 18 it says:

Constant Speed Propeller

The most advanced and common aircraft in WW2 was the Constant speed propeller. With this the pilot uses the prop control to set his desired engine RPM, while the propeller governor attempts to maintain the set RPM.

Youl find that the alied planes use CPS. In these planes you can not change the prop pitch manuely, atleast not directly.

100% RPM setting gives you maximum combat RPM, this will give you the most power. If i like go into a long cimb then i will want to use 95% RPM setting mayby rad on 2 and 95% throttle, this way by the time i get to altitude my engine is not running too hot.

When your not in combat or climbing and you want to conserv on fuel and keep your engine cool then use a cruising RPM. Each plane as a differant cruising RPM and or combat RPM. Usualy 75 to 80% will give you cruising RPM( about 2700 RPM)

Capt. 361stMapleTiger.
http://www.imagestation.com/picture/sraid79/p9158822c9eda67f1dd0b724a5f846229/fb18d0ec.jpg
Proud member of the FBAA and Nutty Philosohpy Club.

Maple_Tiger
03-30-2004, 04:07 AM
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by TinkerToy__:
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by BlindHuck:
Do you get faster speeds at less than 100% rpm? I haven't bothered to check. In RL you don't (for aircraft you mention). http://ubbxforums.ubi.com/images/smiley/16x16_smiley-indifferent.gif

"I race full real exclusively in IL2:The Forgotten Battles." - Mark Donohue<HR></BLOCKQUOTE>

Actually I was wondering about that. I found that at certain prop pitches I was getting no increase in RPM from increasing the throttle. I was maxed out it seemed. Again, I am no expert but I was hoping a tutorial might explain why that is, as the obvious thing that comes into your head is 'more juice=more rpms'.

TT.<HR></BLOCKQUOTE>


You can't change prop pitch on CPS planes. Once you set the desired RPM then the governor will change the prop pitch automaticaly to keep your engine at the RPM you have set.

Capt. 361stMapleTiger.
http://www.imagestation.com/picture/sraid79/p9158822c9eda67f1dd0b724a5f846229/fb18d0ec.jpg
Proud member of the FBAA and Nutty Philosohpy Club.

maxim26
03-30-2004, 06:31 AM
Thank you, Maple_Tiger. I asked questions like this before and this is first good answer!

How to know which a/c has CPS. Is this infor in manual? Where to get info on combat and cruising RPM for different aircruft?

TinkerToy__
03-30-2004, 07:15 AM
Everyone who has replied to this post: thanks a lot! All this info is a big help http://ubbxforums.ubi.com/infopop/emoticons/icon_smile.gif

michapma
03-30-2004, 07:43 AM
Hi all,

There is a CEM tutorial here:
http://people.ee.ethz.ch/~chapman/il2guide/cemguide/intro.htm

C!

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