I Want my 4.09 Spit FM's back.........

[Kwiatek]

Blackdog_kt you have probably right. Most opinions and data claim that float curraburator under negative G casue engine stall due to fuel lost but probably the truth is that lost power is beacuse of fuel flood curraburator and engine. When you apply negative G float in curraburator is going up and fuel flood curraburator. Probably with prolonged fuel flood engine could stop and then could be little problem with start it again. Of course moving prop will start engine again but it could need some time to do it.

I have a few time problem to start on ground inline engine of plane beacuse i gave it too much mixture.

I think Ms Shilling Oriffice was a small disc with hole to prevent fuel flood curraburator.


Ad to video with Spitfire flying aerobatic when he is making inverting flying he is actually in shallow dive with throttle back.


JG4_Helofly Spits or Hurricanes from BOB era have not too much engine workload. You opearated mostly throttle level beacuse you got CSP ( constant speed propeller unit) which mean that you just set only wanted RPM ( in fight maximum possible, in cruise depend of economy of fuel) and mixture level was also only for economical flying ( auto - reach - lean). Much more work load have planes with variable prop pitch like early 109s and early russian planes.

[JG4_Helofly]

Originally Posted by Kwiatek

JG4_Helofly Spits or Hurricanes from BOB era have not too much engine workload. You opearated mostly throttle level beacuse you got CSP ( constant speed propeller unit) which mean that you just set only wanted RPM ( in fight maximum possible, in cruise depend of economy of fuel) and mixture level was also only for economical flying ( auto - reach - lean). Much more work load have planes with variable prop pitch like early 109s and early russian planes.

Right, and there is not only prop pitch. Engine cooling is also "undermodeled" in IL2. Try to dive with cooling flaps open without power from 10000m. The engine will still run perfectly once you are at sea level. In RL you had to close these flaps to prevent the engine from getting too cold. Some other planes could be overboosted like the P47.
It might be interesting to watch player killing their machines because of abusiv operations.

[Kwiatek]

Originally Posted by JG4_Helofly

Right, and there is not only prop pitch. Engine cooling is also "undermodeled" in IL2. Try to dive with cooling flaps open without power from 10000m. The engine will still run perfectly once you are at sea level. In RL you had to close these flaps to prevent the engine from getting too cold. Some other planes could be overboosted like the P47.
It might be interesting to watch player killing their machines because of abusiv operations.

Yes but it would affect most such plane with piston engines. Maby we will get it in COD

[Ra'Kaan]

I love this thread! I have read the entire thing!

I apologize for not having anything to contribute on the subject, however, I wanted to post my appreciation for all the thought, dedication and hard work that goes into the mechanics of each and every plane in the IL-2 series.

This thread demostrates the fact that we all here respect the men and women who flew these amazing machines our desire to recreate as close as possible the conditions these people encountered in various circumstances.

I have worked in the aircraft manufacturing industry so many of the things discussed here intrigue me on a mechanical level.

Thank you posters for a fascinating discussion!

[K_Freddie]

I know....