IAR engine feature...

[Azdack]

Hello 

I'm flying with the new IAR...I better adjust the propeller pitch/RPM and I don't completely close the engine hood but after twenty minutes of flight the engine locks...Any advice ? A tutorial ? Thanks

[LukeFF]

2300 rpm max and keep the manifold pressure in the middle range on the boost gauge - per the Specs page. ?

[Charlo-VR]

This will help for now, too:

 

https://forum.il2sturmovik.com/topic/86778-how-to-iar-8081-my-first-il-2-tutorial/#comment-1297782

[Jaegermeister]

Don't forget to reduce your RPM when diving or the increased speed will overspeed the propeller. The odd wailing noise when you reach max RPM is a sort of alarm, and when you hear it, check your prop pitch. It does help when you are looking outside the cockpit while (hopefully) chasing an opponent 

[Jaws2002]

I don't know what to say. I think the RPM is running away a bit too fast. I didn't have the time to test it yet, but the manual is saying to set the prop pitch at 12 O'clock for take off and only start increasing the pitch after liftoff.

  So far, in game, if you leave it at 12 o'clock for the duration of the takeoff run, the engine gets damage and it's later going to fail. I did two takeoff runs and the RPM goes way above 2500RPM during takeoff run.

 

 Here are the pages from the manual:

 

 

 

 

 

[1PL-Husar-1Esk]

27 minutes ago, Jaws2002 said:

I don't know what to say. I think the RPM is running away a bit too fast. I didn't have the time to test it yet, but the manual is saying to set the prop pitch at 12 O'clock for take off and only start increasing the pitch after liftoff.

  So far, in game, if you leave it at 12 o'clock for the duration of the takeoff run, the engine gets damage and it's later going to fail. I did two takeoff runs and the RPM goes way above 2500RPM during takeoff run.

 

 Here are the pages from the manual:

 

 

 

 

 

I had the same feeling, just that, that the rpms are raising to fast. For example in Blitz they don't but is other engine, without  governer also and propeller shape is different , I suppose.

Edited December 24, 2023 by 1PL-Husar-1Esk

[BlitzPig_EL]

It's a very fragile airframe as far as taking damage as well.

[76IAP-Black]

I currently have not the feeling, that I understand this plane or even have control over it.

I use the propeller feathering to, no idea what for, but it safes the engine.

 

And that's the problem, there are planes out there with features, Systems and special methods how to operate them, and no real handbook.

 

I need to create one by myself as a simple PDF, starting process for the jets, how to use flaps for the ju-52 and other features.

The devs are doing a great job to recreate these features, but leave us a bit clueless ??

[MAJ_stug41]

5 hours ago, 76IAP-Black said:

I currently have not the feeling, that I understand this plane or even have control over it.

I use the propeller feathering to, no idea what for, but it safes the engine.

 

And that's the problem, there are planes out there with features, Systems and special methods how to operate them, and no real handbook.

 

I need to create one by myself as a simple PDF, starting process for the jets, how to use flaps for the ju-52 and other features.

The devs are doing a great job to recreate these features, but leave us a bit clueless ??

There is a series of notes in the specifications tab should you open the map. You may also check for the relevant keymaps in the keymapper. The prop pitch control is already used in manual prop pitch mode other aircraft.

 

Should you want a good overview of why prop pitch and engine rpm matter, and the methods for controlling and governing such, this is a good place to start -

 

[=MERCS=JenkemJunkie]

If you just want a TL:DR version you don't need to understand prop pitch angles or the clock or anything like that. All you need to know is

Propellers: high pitch keybind = RPM down

Propellers: low Pitch keybind = RPM up

Then just keep an eye on the RPM gauge or listen to the engine, and constantly adjust the RPM up or down when it changes on you.

[[CPT]Crunch]

Wonder how difficult it was in the real pit, the switch isn't exactly in an ergonomic position to be reaching for it in a dogfight or in aerobatic maneuvering.  We have it easy, can put it right on the HOTAS throttle levers, at the finger tips.

[Jaws2002]

19 minutes ago, [CPT]Crunch said:

Wonder how difficult it was in the real pit, the switch isn't exactly in an ergonomic position to be reaching for it in a dogfight or in aerobatic maneuvering.  We have it easy, can put it right on the HOTAS throttle levers, at the finger tips.

 

 I don't think it was as sensitive, as it is in game, to changes in speed. Earlier engines had fixed pitch and the engine didn't just die when you dropped 200 meters or the speed increased a bit.  I think it's a bit too sensitive to speed changes. The manual is saying to leave it at 12 o'clock and max boost for the take off run and doing that will damage the engine.

Edited December 24, 2023 by Jaws2002

[MAJ_stug41]

2 hours ago, Jaws2002 said:

 

 I don't think it was as sensitive, as it is in game, to changes in speed. Earlier engines had fixed pitch and the engine didn't just die when you dropped 200 meters or the speed increased a bit.  I think it's a bit too sensitive to speed changes. The manual is saying to leave it at 12 o'clock and max boost for the take off run and doing that will damage the engine.

Exactly, it is suffering from p40-itus, like everything else due to the absurd arbitrary engine timers.

[=MERCS=JenkemJunkie]

Running low RPM and high boost won't matter in this sim, so there's no danger in dropping the RPM under 2300 before/during your dive to make room for the RPM spike.

4 hours ago, [CPT]Crunch said:

Wonder how difficult it was in the real pit, the switch isn't exactly in an ergonomic position to be reaching for it in a dogfight or in aerobatic maneuvering.  We have it easy, can put it right on the HOTAS throttle levers, at the finger tips.

I don't know what the Romanians were smoking, but the Germans were proper gamers and had the prop pitch controls all comfy on their HOTAS.

[LukeFF]

2 hours ago, =MERCS=JenkemJunkie said:

I don't know what the Romanians were smoking, but the Germans were proper gamers and had the prop pitch controls all comfy on their HOTAS.

 

The IAR 80 reminds me of a plane where someone went to a huge swap meet, grabbed whatever they could find, and then cobbled it all together into something that could fly. ? 

[BlitzPig_EL]

Too bad they couldn't find any Hamilton Standard props there.  Just sayin'.

[Azdack]

Thanks for the answers. Now, I manage the engine by juggling the propeller pitch and the RPM that I carefully monitor to not exceed 2300 rpm. Once airborne, I lower the pitch to 10.30 and in combat I oscillate between 10.10 and 9.30. The ATA (I think it's the name) fuel inlet pressure in the engine, I see it vary between 600 and 700, but I carefully don't go too far in the red zone of the measuring instrument. The plane flies well, about 350/400 kmh in horizontal flight. To dive I cut the throttle but the characteristic whistle of the engine arrives quickly and I have to go up quickly enough if not indeed it is the assured breakage.

[MAJ_stug41]

You can go to 850mm hg on the manifold pressure. IRL these engines could sustain 900mm hg, with a reduced overhaul time, but in game nearly all engines are made of glass so they shatter when you look at them wrong.