Engine smoke during startups

[sch_tec_crew]

Engine smoke during startups in general is missing on all WW2 planes

[rkk01]

Agreed - in general the start up sequences seem very sanitised…. Where are the mis-fires, pops and catches on a few cylinders before the whole bank settle down in unison?

This might seem like an entitled whinge, but is a major part of the piston engine appeal and would greatly improve immersion

[bkthunder]

The fact in 2023 this is still the only sim or game in the history of flight sims that has no start-up smoke effects is mind-boggling.

[grafspee]

Smoke from exhaust is more related to modern use of warbirds, during war time those engine when run daily were almost smoke less during start up, unless operated in cold temps during winters.

So for now there are lots of more important things to do, but if ED decide to simulate this expect that those smoke won't be just fixed animation exactly the same no matter the condition during start up, cold engine, warm engine, priming , outside temp will matter.

For me i rather have no smoke then fixed smoke every time i start engine.

[dresoccer4]

+1 lets see some realistic smoke effects on startup. thats the biggest thing missing from this after watching a ton of videos on warbird startups

[grafspee]

On 11/7/2022 at 9:56 PM, rkk01 said:

Agreed - in general the start up sequences seem very sanitised…. Where are the mis-fires, pops and catches on a few cylinders before the whole bank settle down in unison?

This might seem like an entitled whinge, but is a major part of the piston engine appeal and would greatly improve immersion

Definitely piston engines in DCS deserve full package, not only smoke but all thing other things. Like transition from primer feed to carb feed during start up, if not properly done may lead to failed start up. Other thing like engine behavior in cold temps like sub 0C or even differences between cold running engine and warmed up engine.

[dresoccer4]

On 3/30/2024 at 4:57 PM, grafspee said:

Definitely piston engines in DCS deserve full package, not only smoke but all thing other things. Like transition from primer feed to carb feed during start up, if not properly done may lead to failed start up. Other thing like engine behavior in cold temps like sub 0C or even differences between cold running engine and warmed up engine.

i thought there was already startup differences in cold temps?

[grafspee]

3 hours ago, dresoccer4 said:

i thought there was already startup differences in cold temps?

As far as i am concerned there are non. In cold temp when engine is cold it needs more throttle opening to maintain proper idle speed if you cut throttle in cold engine in plane like P-51, Spitfire it will just stall. During warmup fixed throttle position should result in increasing rpm thorough warm up. At low temp viscosity of oil makes engine rotate a significantly harder then oil is warm. Second thing is fuel evaporation when engine is cold fuel does not evaporate fast enough to take part in combustion. Those 2 factors makes that if engine is cold you have to push throttle significantly more to obtain 1000rpm idle then when engine is warmed up. So if you initially after start up set throttle to 1000rpm for warm up at the end on warm up engine rpm will go up, maybe to 1100 or even more.

Another thing is throttle response right now it does not matter if coolant is 10C or 100C you have exact same throttle response. Manuals warns pilots to not over cool engines below 50C  during descending for landing because when they ask engine for power at low coolant temp engine will likely fail to provide that power.