Could someone explain me these engines failures ?

Ok guys.. On curtains missions I have some weird engine failures that I can't really explain, soon after take off.

Could someone have a look at these three tracks, and explain me why my engine has a failure ? Much a appreciated.

The 3 track files are inside this 7z archive.

http://merlin555.free.fr/dcsa10/enginefailures.7z

Thanks a lot

Haven't had a look yet but the obvious one is running the engine too hard for too long.

Haven't had a look yet but the obvious one is running the engine too hard for too long.

Well. That's is obviously not the answer. I start the engine, and then warm it up at less than 1400rpm for while.

And then I cautiously apply power, and only use less than the max rpm for a few seconds...

Watch the tracks, you'll see,

I won't be able to tell to be honest but I'll take a look.

I watched first two tracks, and I have no idea...odd.

Not sure if its just me but Ive noticed your engine coolant temp. at 120°C on take off, and in air way over that. Max allowed is 121°C. You are also warming the engine on 1400rpm with both rads closed! Carefully here, this engine can build up heat very quickly.

Correct way would be - both rads fully open before engine startup and warm up at 800rpm till oil temp 40°C, and watch that collant temp.

If its something else I didnt notice.

On just a side note - you switch on pitot heat way to early it should be switched just before take off (if not in cold wather) otherwise it would overheat without ram air to cool it down.

Not sure if its just me but Ive noticed your engine coolant temp. at 120°C on take off, and in air way over that. Max allowed is 121°C. You are also warming the engine on 1400rpm with both rads closed! Carefully here, this engine can build up heat very quickly.

Correct way would be - both rads fully open before engine startup and warm up at 800rpm till oil temp 40°C, and watch that collant temp.

 

If its something else I didnt notice.

 

On just a side note - you switch on pitot heat way to early it should be switched just before take off (if not in cold wather) otherwise it would overheat without ram air to cool it down.

Ok, so this is it. I thought I had to leave the rad both on auto during the startup. My mistake.

For the pitot heat, I confess that I was switching it on without even considering what it really was, like the other light switches there.

It makes sense to turn it on just before take off, like I do with the A-10C or Falcon BMS

Thanks a lot !