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

[ElAurens]

Over priming, or some issue in the carburetor itself.

That much flame is not a normal thing.

[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
Sorry for the double post ,i dont seem to know what I am doing.....

[rakinroll]

Thank you Oleg, and thank you again for videos.

[Ibis]

Thanks for the update Oleg.
Here is a video of a Spit start up taken at Wanaka NZ.


Check at 1.10minutes

Maybe Spit was over primed.

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

[Richie]

Stack fire...The engine isn't even firing there. Some fuel vapor has clung to the stacks and caught fire. Something like when you're tuning a new..old type.. engine with a carburetor and it back fires and the carb catches fire.

[kancerosik]

definitelly more red than blue . Of course with the engine stopped and cooled

the video isn´t mine but I was there and can see the engine start 3 times

http://www.youtube.com/watch?v=B4X1h...yer_detailpage

[Tiger27]

This reminds me of the discussions about the cannon flames in IL2, as much as some people can be a bit pedantic, it gives me a nice feeling too know that we will have another ten years of forums to read when things get a bit slow at work

[Sutts]

I realise the main point of the update is the colour of the exhaust flame but I think perhaps what's more import is the extent to which the exhaust flames light up the side of the aircraft.

I've seen two night runs and the exhaust flames (sometimes quite large) didn't have any lighting effect on the aircraft - you just saw the flames - nothing visible behind them.

I think the few night videos posted here confirm that fact. I'm not familiar with the proper terminology but in my view the exhaust flames are not an ambient light source.

Take a look at the night time clip and tell me the RAF would have been happy with an aircraft giving off that much light at night. "Sitting duck" springs to mind.

[KG26_Alpha]

Originally Posted by mungee

What about this pic?
Overdid the priming??

Originally Posted by ElAurens

Over priming, or some issue in the carburetor itself.

That much flame is not a normal thing.

No its normal starting.

And to quote myself

Originally Posted by KG26_Alpha

Hi Oleg

You have the flame colour about right for initial start up but probably to fast in engine speed, slower start to run up.

I've seen a few of these engines start up

1. Lazy/slow red/yellow flame from fuel primed start up.

2. Blue smoke clearing cylinders with yellow flames to brown/grey smoke.

3. Blue with yellow tips on engine run up and under run.

4. Shut down black/grey exhaust smoke short burst.

If I can find some of my video will e-mail it.

[Seeker]

[QUOTE=Oleg Maddox;203623]Hi,

2. Effect of exhaust flame at night time. Emulation of each cylinder exhaust in relation to emulation of real engine cylinders work by a program.
My question to community: isn't it too yellow? Maybe to add a bit red color in a mix with yellow? It is tunable really, so I would like to listen suggestions


It actually needs some blue, though I know nothing of computer colours, I've run plenty of short pipe four strokes, and yes, petrol burns yellow in a rich mixture, but as the revs increase the combustion cleans up the flame will become blue.