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

[Wutz]

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

http://www.youtube.com/watch?v=4ZzvKCQwWj0

[JG52Krupi]

Sweet, thanks Oleg.

Yes a bit too yellow, needs to be turned down and perhaps blue after effects added like in the video Wutz linked too...

[Oleg Maddox]

Originally Posted by Wutz

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

No, this doesn't give me idea... Load the sound file from this video in a professional sound edit program and look for the spectrum... You will see there soo poor range and will be very impressed if you will load the same from a track above (our), even it is a place holder yet...

However I see the color of exhaust here in DB. Interesting with which gazoline and settings for start Becasue exaust color depending of many-many "settings".

[Wutz]

Originally Posted by Oleg Maddox

No, this doesn't give me idea... Load the sound file from this video in a professional sound edit program and look for the spectrum... You will see there soo poor range and will be very impressed if you will load the same from a track above (our), even it is a place holder yet...

However I see the color of exhaust here in DB. Interesting with which gazoline and settings for start Becasue exaust color depending of many-many "settings".

Sorry Oleg I did not mean the sound, but the exhaust flames coming out. Sorry if I did not state that clear enough.

[Richie]

Originally Posted by Oleg Maddox

No, this doesn't give me idea... Load the sound file from this video in a professional sound edit program and look for the spectrum... You will see there soo poor range and will be very impressed if you will load the same from a track above (our), even it is a place holder yet...

However I see the color of exhaust here in DB. Interesting with which gazoline and settings for start Becasue exaust color depending of many-many "settings".

Oleg.....Spitfire flames in the dark and they are blue!!

http://www.youtube.com/watch?v=QhFAwSk9Vqg

[Mysticpuma]

Originally Posted by Richie

Oleg.....Spitfire flames in the dark and they are blue!!

Cracking find. I searched for a clip like that, but found nothing.

BTW, not all engines start the same. Here's a clip I found which makes me think that a night-time startup, if similar conditions were applied to a Spitfire, could be a really impressive pyrotechnic show!

http://www.youtube.com/watch?v=kXpQv...eature=related

Cheers, MP

[Oleg Maddox]

Originally Posted by Richie

Oleg.....Spitfire flames in the dark and they are blue!!

Sure, with high RPM and right mixture.

[Sutts]

Oleg,

In terms of the initial startup flames I think you have the perfect colour already, no more red required.

I attach comparison shots from the previously posted P-51 Old Crow startup against the flames in your video. You have them spot on I think.

Once the engine is running it looks like red/blue is the expected colour though. I haven't seen any yellow flames from a running engine yet and the colour chart previously posted only mentions yellow flames when the spark plugs are defective.

Would be nice to occasionally see the large lazy flames caused by an overpriming stack fire too.

Thanks

[fireflyerz]

Lets not get too carried away... PLEASE -Watch the whole vid to see what happens as engine revs are increased and decreased.

http://www.youtube.com/watch?v=Xs_qt4GCj4A

[T}{OR]

Originally Posted by fireflyerz

Lets not get too carried away... PLEASE -Watch the whole vid to see what happens as engine revs are increased and decreased.

Very nice find!

And a good point. It is important to note the engine RPM changes. When they occur, it affects how the fuel is burning in the engine. Variable and constant RPM's are two completely different processes happening inside the cylinder. In other words - when on constant RPM (provided we have the ideal mixture) the engine is burning fuel just like it should have, while with variable (changing) RPM the mixture and overall fuel burning process is far from ideal.

i. e. - for the very same reason there are two different fuel consumption figures in cars: one for driving in a city where throttle changes are frequent and fuel consumption is higher, and another for highway driving where fuel consumption is much lower.