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PostPosted: Sun May 27, 2012 1:23 pm 
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NOTE:
Core Update v.1.4 is now available. You never need to keep older core updates, since they are always includes in the latest update.
viewtopic.php?f=23&t=30279

Core Accu-Sim Update v.1.3.1
NOTE: All previous core updates are included in this update.

IMPORTANT P-40 OWNERS:
If you installed the v.1.3 update on Sunday, May 27th before 8pmEST, you need to install the later v.1.3.1 update to have all P-40 files up to date.


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NOTE: This update applies for the following Accu-Sim aircraft ONLY:
- Spitfire MkI/II
- P-40
- P-51


v.1.3 Accu-Sim Core Update Changes
- New oil system modeling. Based on A2A independent tests on live Merlin and Allison engines. Oil pressure is slower to rise, and pressures can be extremely high with cold oil. It is very important you observe oil temperature minimum temperatures before applying full power.
- Re-coded the magneto behavior on engine power
- Accu-Sim engine performance and drag envelopes better synched with FSX flight modeling
- Mach drag removed from FSX and fully controlled via Accu-Sim core
- Adjusted fuel starvation with clogged fuel filters
- Increased Co2 power for Spitfire emergency gear
- Wear power scalar to improve control over engine life for different engine types
- Some fuel system delivery tweaks, increased fuel pump output to avoid some pre-mature fuel starvation with very high power

FIXES:
- Sometimes moving to a new airfield from being in the air would result in the gear not being lowered.
- Reduced moisture put into the air by breathing

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PostPosted: Sun May 27, 2012 2:02 pm 
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In case I get hooked by the P-51 and buy an "older" Accusim plane e.g. the Spitfire would I need to reinstall this update after I installed the older plane or do nothing at all?

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PostPosted: Sun May 27, 2012 2:40 pm 
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You would need to install any updates for those airplanes first, then this update.

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PostPosted: Sun May 27, 2012 5:14 pm 
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The latest core update always includes the content of the previous core updates. I don't know of any other updates for this trilogy of aircraft outside of the core updates method. Several changes have been made to the Spitfire including seat textures, hydraulics and I believe the fuel system since its debut, soley through the core update patches. You should always run the core update last after installing a new aircraft, even if you already had aircraft(s) installed and updated to the latest version.

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PostPosted: Sun May 27, 2012 6:27 pm 
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Thanks Scott,
I've been waiting for this as much as the P-51, both on the same day and even better there's a bank holiday tomorrow here so I've got lots of time to try them all out.
On the sad side, the backups with all of my hours have gone down the drain again, so it's back to square one!
Still if I know your updates it'll be worth it :mrgreen:

M. Jordan.

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PostPosted: Sun May 27, 2012 6:32 pm 
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Just so you know, I do not own the Spit, but installing this update installed the Spit minus a few textures!


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PostPosted: Sun May 27, 2012 7:03 pm 
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Robert,

Thanks for reporting that. It seems you own the P-40, and there was a cross linked file in the updater. We're uploading a new core update at the moment.

Scott.

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PostPosted: Sun May 27, 2012 8:15 pm 
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I forget from the previous updates: Do I need to back-up 3rd party textures before running this?

Thanks,

Joe

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PostPosted: Sun May 27, 2012 8:23 pm 
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Roger on the new update Scott. I'll delete the Spit files.


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PostPosted: Sun May 27, 2012 8:41 pm 
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JoeS475 wrote:
I forget from the previous updates: Do I need to back-up 3rd party textures before running this?

Thanks,

Joe

No, but the aircraft.config file in each folder will be reset to A2A stock, therefore your repaints won't show as selectables in the FSX menu. Your current Aircraft.config is backed up to the A2A folder; either copy/paste that back after the update is installed, or make your own backups of each plane's aircraft.config before you start and then restore after the update.

I simply copied just the information about the repaints from my back-up and then pasted that block of text into the 'new' aircraft.config, just in case some technical parameters are changed in the updated config.

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PostPosted: Sun May 27, 2012 11:50 pm 
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Thanks!

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PostPosted: Mon May 28, 2012 3:57 am 
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There were no changes to my P-40 configuration file, all 3rd party textures were still there, only the Spitfire configuration files were changed, has that something to do with the cross linked file?

M. Jordan.

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PostPosted: Mon May 28, 2012 6:08 am 
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What a pity,

same issue as Erlk0enig and mkjordan after core update 1.3

Lost my hours of my world tour P40 after 116 hrs of flight !! :roll:

Made a copy of C:\Users\USERNAME\Documents\A2A\FSX\... folders to save states prior P51 and core update installation.
Thereafter overwriting DAT files with the saved old ones, but all hours are gone.

Any solution :?:

I wanted to make a complete world flight with only one engine, after the half of my tour that challange is over now :!:

I am very very angry about that and not to be informed stagily about loosing all aircraft states.

After inserting again my restored aicraft specific *.dat files followed by installing core update 1.3.1 - same issue.

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PostPosted: Mon May 28, 2012 12:24 pm 
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I posted this on another topic but it's more relevant here:

myself wrote:
Can't wait to test those improvements. I wonder if the re-coded magneto behavior solves the difference of power output between fuel out and magnetos off. Because in Core 1.2, if you cut the magnetos after your engine died of fuel run-out, you lost additional power you didn't even know you had.

Also, I wonder if they actually touched the pneumatic system. It's not listed on fixes list... even though it should be a quick fix since all that needs to be done is to set a trigger to shut down the air pump when prop is not spinning.

...Actually, I upgraded and testing as I type. +5 oil temperature and it's still 120 psi on the Spit instead of dropping to regular. Good. No longer a dual state "cold"/"warm" oil viscosity. The modeling actually reminds you that the oils are still barely lukewarm. Hmm... viscosity reduces even within recommended operating oil temperature region (40-80 deg C). With this oil modeling, it'd be sheer horror to take of with absolute minimum oil temperature of +15 deg C (not that I ever do it with oils cooler than +30 - the oil pressures are still quite maxed out at +40). Anyway: AWESOME. Gives some extra motivation to start up, warm, stop and restart to give oils twice the time to warm up before taking of on sub-zero temperatures.


Some new observations from my last flight with Spit:

Fuel pressure has been reduced to real world values. Fuel drainage after fuel cocks shut greatly reduced. With the higher than real fuel pressures, draining the fuel lines and carb of fuel took so long that temperature easily reached 110 deg C before shutdown, even if I landed it with 80 deg C coolant and shut the cocks immediately. Very good.

Too bad the pneumatic system hasn't been touched. Air pump still operates on some cosmic energy: the pressure builds up after engine has been shut down even though the air pump is supposed to be driven by the crankshaft. It's most noticeable if you fail at starting the engine with an empty pressure tank: a failed attempt to start the engine will trigger air pump to "on" position while engine is cranked... but it stays "on" even as engine stops spinning. You get to listen to it hissing and recharging to full capacity while you prime for another start-up attempt...


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PostPosted: Mon May 28, 2012 1:23 pm 
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whiic,

Nice find. You are correct, if you start and then shut the engine down, some pressure continues to feed into the system. This has been fixed and will be in the next core update we'll get out in the next few weeks.

Scott.

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