Engine dies after takeoff

[lothar29]

It just uploaded, so it may take about 5-10 minutes to be in HD.

hace 28 minutos, Art-J dijo:

What about the usual culprit number 2: MW-fuel selector switch? Have you checked if it's in correct position when you spawn?

the MW-50 is in the off position

[razo+r]

55 minutes ago, lothar29 said:

It just uploaded, so it may take about 5-10 minutes to be in HD.

the MW-50 is in the off position

That's not what perfectly warming up the engine looks like.

You rev it up quite high for a cold engine, exceeding the maximum oil pressure. At takeoff, your engine is barely at minimum temps, and you exceed the maximum oil pressure yet again.

You should try applying throttle a bit more carefull while paying attention to the oil pressure and temperature gauge. When the oil pressure spikes above the maximum value, it's indicating that the oil is still too thick/not warm enough, and you should wait until it's ready.

Additionally, I see you got the MW/Fuel switch on the wall in the fuel position and enable the MW switch on the dashboard, followed by a shaking of the engine when you briefly go full throttle. That might also contribute to your engine tearing itself appart.

Edited Thursday at 01:01 PM by razo+r

[peachmonkey]

2 hours ago, lothar29 said:

the MW-50 is in the off position

he's talking about the mw-50 vs fuel in the mw-50 tank. Technically, you overboosted the engine only once (without mw50), so this switch's position shouldn't really matter that much so early into the flight time, however I noticed you got to 2600rpm & 1.4 ATA pretty quickly and stayed there until the engine failure. Try limiting to 1.3 ATA max and see if that extends the engine's life (don't over-boost to 1.8 ata either, even if just for a split second).

null

Edited Thursday at 02:15 PM by peachmonkey

[lothar29]

What has me completely baffled is that from the moment the BF109K-4 came out in access, I have never had these problems with engine stops. I don't usually fly it live, but I have flown it a couple or three times a week, and this has been a surprise to me.

[peachmonkey]

14 minutes ago, lothar29 said:

What has me completely baffled is that from the moment the BF109K-4 came out in access, I have never had these problems with engine stops. I don't usually fly it live, but I have flown it a couple or three times a week, and this has been a surprise to me.

there has been an 'engine cooling' update about a year ago, or more, not sure if you haven't flown for that long. For the most part if you stay within the advertised engine regimes there's not a lot of 'bugs' that pop-up. However, if you start firewalling the throttle (even for very short periods of time) the answers to the questions such as "why did this fail?" become pretty elusive. That's DCS for you.  

[Art-J]

@lothar29 Putting all cooling related aspects aside, as peachmonkey noted above, in the video your MW/fuel selector is set to "fuel" instead of MW mixture. If your plane was in standard config (ie. aft tank filled with MW mix), that means you were constantly dumping water and methanol into your fuel system. Petrol engines don't run on water , so your DB605 quit after a while.

It's been modelled like that since module release by the way and default selector position has always been "MW", so If yours is flipped down after spawn, I would check if something hasn't changed in your control bindings after the last update. 

[peachmonkey]

1 hour ago, Art-J said:

 MW/fuel selector is set to "fuel" instead of MW mixture. If your plane was in standard config (ie. aft tank filled with MW mix), that means you were constantly dumping water and methanol into your fuel system. 

I was suspecting this, but is it really feeding fuel to the engine continuously if one doesn't push the throttle to the max 1.8ATA/max RPM?  I thought it'd do it only in the max position?

[Art-J]

Years ago I was wondering about the same at first, but later when I thought about it - if aft tank is supposed to provide extra long range fuel supply in that configuration for all flight including cruise, it wouldn't make any sense if it worked only at emergency power, would it?

I didn't investigate the ins and outs of the system deeper, though, 'cause I usually don't use aft tank for fuel anyway.

[lothar29]

Thanks everyone for your comments, but I'm preparing another video with everything in working order, and soon the same thing happens.
I need to figure out if it's my fault...

Thanks

When the video is ready, I'll upload it and see if you can give me ideas about what mistakes I'm making.

 

Edited 2 hours ago by lothar29