Friday 2010-12-10 Dev. video update and Discussion

[engarde]

Originally Posted by Wutz

Well this is not a british engine but maybe this gives you an idea how it should look like?

Haaaahahaha i believe thats coming straight out of the block with no exhaust stubs?

I recall i did that after transplanting a 2 litre Ford engine in my little Mk2 Escort.

Drove it around for a bit with no bonnet/hood and no engine pipe.

Sounded like a demon on a short chain, although when i got back i realized i'd burnt pretty much everything off that side of the engine bay.

Aah good times.

[Hunden]

Thanx for the update but somehow I feel like a cheap date thats been handed half a beer. Love what you gave us though. Realistic or not I like the BLUE.

[Skoshi Tiger]

It's lucky we've got so many experts on this forum especially in the field of chemisty. I on the other hand have only the basic high school level.

If you look at the first minute of so of this video, you'll see the flame changing colour due to the mixture of the fuel and air being burnt. If there is exess fuel in the mixture it will be a highly visible yellow flame, if it's the mixed fuel/air at the correct ratio it will be blue but almost invisible.

http://www.youtube.com/watch?v=IpuVOYRb2pU

In Olegs video we a an engine that has just been started. From the video shown the engine is barely ticking over.

Now the merlin engine had what's called a high overlap cam shaft, which means that the inlet and outlet valves are open at the same time for a long time durring the otto cycle. (It allows fresh fuel air mix to enter the combustion chamber at the same time as the last of the exahust gasses leave the combustion chamber.) This makes the engine more efficient within the engines power band BUT at low revs the engine engine runs rough due to incomplete burning of the fuel air mix in the combustion chamber. It's what known as a 'Lumpy Cam' in automotive circles. It means at low revs there is a lot of unburnt fuel in the exhaust gasses.

Now I know some people here want Oleg to demonstrate a 'Blue Flame' in an update video. I for one, most emphatically, do not want to see this!

Cheers!

[Richie]

That must be one of the Messerschmitts engines that fly in Germany. They're all Buchon switch backs to Daimlers but you'd never be able to tell. A G6 G10 and a G4.

[SJ_Kraken]

-Nice update, but how about sound? It's my idea or is the same original sound of il2?, is only temporal?.


-Best Regards.

[Skoshi Tiger]

Originally Posted by SJ_Kraken

-Nice update, but how about sound? It's my idea or is the same original sound of il2?, is only temporal?.


-Best Regards.

Happy first post!

Need to read the first post in the update!

Cheers!

[GF_Mastiff]

Yes Oleg I was going to say my military experience has shown me the most exhaust flames are a bluish hugh.

[Flying Pencil]

Originally Posted by Oleg Maddox

It is depending of gazoline, pressure, RPM, and so many other factors... Even at different altitudes it is different really...

We have original table of the exhaust colors by which British crew were need to define is in good or not so good conditions the engine before the flight...

You did your homework, Oleg, just as we expect from you.

The orange flash exhaust would be correct if it is running at idle and too rich with fuel, but at normal power would be blue.

The flash is pretty good, not perfect, but good enough.


2 more comments:
The engine audio needs a lot more work.

Someone needs to cut the grass.


Keep up the excellent work!

S!

[greypeace]

Hi Oleg,
I dont know where to post this query
First post got lost in last week update
Thank for the tip ( from a kind chap )to repost early in the new update so it will be seen ...
Sorry if I am out of place ,

QUERY:
I am finishing a FFB firmware project and I would like to know if BOB 's FFB handling will be compatible with the Microsoft FFB stick on which my firmware is based.
I am only using the "Spring" feature , The most important one ...

Thank you
gb

[mungee]

What about this pic?
Overdid the priming??