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J_Weaver
11-18-2004, 07:49 PM
I've been around since Il2 but I'm now getting into realistic engine management. I need a little help with the superchargers. At what altitude do I need to adjust it?

MaxMhz
11-18-2004, 08:05 PM
That depends on the plane - check the readme files http://forums.ubi.com/groupee_common/emoticons/icon_wink.gif

It's mostly 3000 - 4000 m altitude to switch stages, but then some have automatic, others have more stages - read the readme files in main FB directory

SlickStick
11-18-2004, 08:12 PM
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by J_Weaver:
I've been around since Il2 but I'm now getting into realistic engine management. I need a little help with the superchargers. At what altitude do I need to adjust it? <HR></BLOCKQUOTE>

Aside from reading the manual, which is a great answer, you'll "feel" when it's time to switch supercharger stages in planes so equipped.

As you climb above a certain altitude, the revs will start dropping and the engine sound changes. The same thing happens when hitting Stage 2 at too low of an altitude. Kind of like trying to go into 5th gear in a car, while only doing 30MPH. http://forums.ubi.com/images/smilies/16x16_smiley-wink.gif

Also, remember to drop fuel mixture when you get to a certain altitude and unburned fuel is pouring out of your exhaust ports. You'll feel that, too.

J_Weaver
11-18-2004, 08:25 PM
I couldn't find anything in the ignoreme... er... I mean readme files http://forums.ubi.com/images/smilies/1072.gif but the book said around 2500m. Thanks http://forums.ubi.com/groupee_common/emoticons/icon_smile.gif

effte
11-19-2004, 04:06 AM
The proper method would, of course, be to watch your manifold pressure gauge. When it begins dropping, you are approaching the switchover point.

If your RPM is dropping, you are typicallt far, far beyond the switchover point, as this means the propeller has hit the fine pitch stop and doesn't even get enough power to maintain RPM anyway. You'll be dead slow and very low on power when it happens.

J_Weaver
11-19-2004, 09:44 AM
Thanks guys http://forums.ubi.com/groupee_common/emoticons/icon_smile.gif

Jumoschwanz
11-19-2004, 10:14 AM
For information on this it is very useful to look at the readme files for every patch all the way back to when Complex management came out. They used to put all the different altitudes for stage two for each craft. In the PF manual under supercharger it says "around 2500m" not to precise. I think the zero for instance can go to 3600m before it requires stage two.

A lot of the info in the old readme files for each patch is hard to find elswhere and might be unique to the files. Even in the original Il2 the readmes have a lot of info you can't find later on. I have mine all printed out on my trusty dot matrix printer and put in a pile by my rig so I can refer to them if i feel like it.

The guys who do not have all the old patches from the last three years might be $hit out of luck finding some of this info. I will look back through the readmes and other manuals and post values for all planes in the future when I have time.

S!

Jumoschwanz