J2M in IL-2 1946

[I-25]

well i look in other fourms and could not find anything...

when i fly the J2M weather it be the 3 or the 5 when i get to a high altitude the engine starts to bleach two streams of gray smoke and loose a lot o' power. i messed with the super charger settings to no result.

any tips?

[Raptor1]

Reduce your fuel mixture

[I-25]

tnks! i just read something about that over at the combatsim forums...

[Schroeder]

If it has a switchable supercharger you should switch it to the next higher position too.

[Raptor1]

If it has a switchable supercharger you should switch it to the next higher position too.

Yeah, but that's just to increase performance, it doesn't fix the fuel mixture problems

[Schroeder]

It does, try it.

The problem with the mixture not burning properly is the lack of oxygen at higher altitudes. The higher blower setting will blow more air/oxygen into the burning chamber and solve the smoke problem for some altitude (at least it did in an earlier version of Il2 IIRC). If I recall the instruction movies of the P47 and F4U correctly then mixture and blower were switched together.

[Raptor1]

Just tried, and you might be right, but the effect is very little (Only changes the altitude it starts at between 6,000-6,500m, over that you have to reduce the fuel mixture)