View Full Version : Pe-2 (definitley not whinging)

04-30-2006, 05:14 AM
In the Pe-2 im cruising along at 3000m, 60% power, 75% prop pitch.

If I go above 3300m brown soot starts pouring out of my exhasts and stops when i go below 3300m.

Im assuming my fuel mixture is too rich or I need to change super charger settings.

Anybody know what I should do above this altitude to stop it......never had this on any other plane before but it looks cool.

04-30-2006, 05:18 AM
Definately sounds like mixture settings

04-30-2006, 05:25 AM
Sounds like you have a "BOONTY BOX" stuck in your air intake!.....Thier are numerous threads here on how to remove it.....Good Luck!!! http://forums.ubi.com/groupee_common/emoticons/icon_razz.gif

04-30-2006, 05:26 AM
http://forums.ubi.com/images/smilies/16x16_smiley-very-happy.gif @ badaboom.1 http://forums.ubi.com/images/smilies/16x16_smiley-very-happy.gif

04-30-2006, 05:31 AM
cmon guys......this is serious http://forums.ubi.com/images/smilies/sadeyes.gif

Im smokin' like a mo-fo and I look like a noob in front of my ai wingmen and their non smoking engines.

04-30-2006, 05:44 AM
lower your fuel mixtures, the soot will go away... if you go higher and it appears again, lower you mixture againhttp://forums.ubi.com/groupee_common/emoticons/icon_smile.gif

04-30-2006, 05:50 AM
Yep, had the same thing yesterday. Just drop your mixture down a notch and it'll go away.

About superchargers - I still am never sure when to apply them. Generally I use no.1 around 2000m and no.2 around 3,500m but i think I pulled those altitudes out my a$$. I know the readme has some info but does anyone have a general rule of thumb - you know, like, speed drops, engine noise changes, etc, etc?

04-30-2006, 06:16 AM
> About superchargers - I still am never sure when to apply them.

Me neither. It's different for every plane, and I'm no expert... my rule of thumb may not be correct. I generally don't bother with stage one until 3000-3500m. Stage two at over 4500m.

However, to check that the supercharger should be on, I look at the engine pressure gauge when I switch it over. If the altitude is too low, then the needle won't move much (or at all); I think keeping it on in this situation may damage your engine eventually(?).
But if the supercharger is doing its job at that altitude, you would expect the pressure to suddenly increase when it is switched on; the needle visibly moves. The tone of the engine might change slightly on some aircraft too, as the prop pitch or the revs should adjust depending what type of prop system the aircraft has.

That's what I think anyway. Take with a pinch of salt.
I'll wait with interest to be corrected.

04-30-2006, 06:16 AM
Yeah. Just your fuel mix. If you cut it slightly, even just to 90%, the porblem goes away.