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Inherent flaw of FSX to give too much ground friction?

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Of course, if anyone has better settings, please tell us all!

 

Johan every time i make a landing i realize how much the realism in FSX ground handling has improved since your patch. I think you deserve a kind of 2012 award for that !

 

Thanks again and merry Chistmas.

With kind regards,

 

Bart S.

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  • Hi everyone; I've been steered over here by folks who are extremely interested in what's being discussed. As an adviser on realism for MSFS going back to the FSX Beta process I can tell you that this

  • Finding until now:   - sliding coefficient raised, saw no ill side effects like in fs9, like the shudder on start of roll. - steering much more direct, great no more skid on normal taxi speeds. -

  • Pete Dowson
    Pete Dowson

    Okay. This is done in version 4.859i of FSUIPC, downloadable now from the Download Links subforum of my Support Forum.   The facilities are enabled by parameters in the INI file. You'll need to look

 

 

Taxi speed should be "a brisk walk".

 

That's what they say..................but I can just see myself taxiing to the other end of our mile long runway at brisk walking speed.. :) Let alone at KSLC (10 miles straight north of here).

Guys, how to extract the original SIM1.DLL? Who knows which add on had messed it up?

 

Thanks,

Dirk.

If you haven't downloaded a revised version of SIM1.DLL from elsewhere then it won't be messed up. If you did then you were advised to make a backup of the original before replacing it with the altered version.

 

The alteration that FSUIPC makes does not alter the SIM1.DLL either, it patches it realtime in memory only, the original file is not altered in any way.

Cheers, Andy.

If you haven't downloaded a revised version of SIM1.DLL from elsewhere then it won't be messed up. If you did then you were advised to make a backup of the original before replacing it with the altered version.

 

The alteration that FSUIPC makes does not alter the SIM1.DLL either, it patches it realtime in memory only, the original file is not altered in any way.

 

Andy, please note this post:

http://forum.avsim.net/topic/392772-inherent-flaw-of-fsx-to-give-too-much-ground-friction/page__st__250#entry2553398

 

I can't remember if I ever changed SIM1.DLL. It could happen so that I did not back it up. My current file was Created: Mon, Dec 10, 2007, 8:30:16 PM and Modified: Mon, Dec 10, 2007, 8:30:16 PM. Accessed: Mon. Oct 03, 2011, 10:37:22 PM.

 

Was this file modified by SP1 or SP2 at least? I think I have a backup of the original Flight Simulator X folder and I can get the un-updated file from there.

 

Thanks,

Dirk.

My Sim1.dll is not altered and has a modified and created date of 26 ‎September ‎2007, ‏‎17:09:20

I have acceleration installed though and that is likely to have a different creation date to SP2.

 

The post you quoted was supposition, its not a known fact, it could have actually been an older version of FSUIPC, Pete did make an alteration to that bit of the code which fixed it for someone else. Perhaps the chap he was quoting was using an older version mistakenly rather than the one he quoted as using. Again that would be supposition though.

 

The question really is why do you think your sim1.dll is messed up?

Cheers, Andy.

The question really is why do you think your sim1.dll is messed up?

 

I may have meddled with it, but was in fs9? I can't recall.

 

Thanks,

Dirk.

It only affects dry pavement. You'll still get the original effects on wet, snow or ice. If you're not experiencing a difference on dry pavement, pretend your 737 is a Formula 1 car. If you're keeping reasonable taxi speeds, you shouldn't see much difference, except maybe in a reduced takeoff roll.

 

Hook

 

No...this is not correct. FSX applies a friction-reduction scalar to wet, snowy, and icy surfaces, 0.9 for wet, 0.8 for snow-covered, and 0.6 for icy. These scalars are applied to the dry surface friction coefficients in SIM1.DLL...so if you have modifed the dry values by either a SIM1.DLL patch or via FSUIPC's runtime hook, then the friction reduction scalars will be applied to the modified values.

 

Regards

Bob Scott | President and CEO, AVSIM Inc
ATP Gulfstream II-III-IV-V

Sys1 (MSFS20+24/XPlane12+11): AMD 9800X3D, water 2x240mm, MSI MPG X670E Carbon, 64GB GSkill 6000/30, nVidia RTX4090FE
Alienware AW3821DW 38" 21:9 GSync, 2x4TB Crucial T705 PCIe5 + 2x2TB Samsung 990 SSD, EVGA 1000P2 PSU, 12.9" iPad Pro
Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, Twin TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case

Sys2 (P3Dv5/v4): i9-13900KS, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090
Samsung 55" JS8500 4K TV@60Hz,
3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU
Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro
PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box

Sys3 (DCS/P3Dv4/ATS/ETS): AMD 7800X3D, MSI MPG X870E Carbon, Noctua NH-D15S, 64GB GSkill 6000/30, EVGA RTX3090
Alienware AW3420DW 34" 21:9 GSync, Corsair HX1000i PSU, 4TB Crucial T705 PCIe5 + 2TB Samsung 970Evo Plus,
TM TCA Officer Pack
, Saitek combat pedals, TM Warthog, TM RS300 FF wheel/pedals, Coolermaster HAF XB case

These scalars are applied to the dry surface friction coefficients in SIM1.DLL...so if you have modifed the dry values by either a SIM1.DLL patch or via FSUIPC's runtime hook, then the friction reduction scalars will be applied to the modified values.

 

Ok, good info. I remember reading that only the dry values were modified by FSUIPC. I saw the original table, but didn't study it thoroughly.

 

Hook

Larry Hookins

 

Oh! I have slipped the surly bonds of Earth
And danced the skies on laughter-silvered wings;

No...this is not correct. FSX applies a friction-reduction scalar to wet, snowy, and icy surfaces, 0.9 for wet, 0.8 for snow-covered, and 0.6 for icy. These scalars are applied to the dry surface friction coefficients in SIM1.DLL...so if you have modifed the dry values by either a SIM1.DLL patch or via FSUIPC's runtime hook, then the friction reduction scalars will be applied to the modified values.

 

Regards

 

Good news, so the patch is all-weather.

 

Thanks,

Dirk.

This is a very good news! So FSUIPC apply the patch to all type of weather?

 

I red all the post but am bit confused:

 

1) about takeoff/landing distance: does this addon "false" the run for takeoff and landing or not?

 

2) Is it available a full version of FSUIPC without installing an interim module? Again, I found only version m module, which is the last?

 

3) ismit possible to modify the value parameters? I suppose yes, via LUA script?

 

Many thanks

Riccardo

OS: Windows 10-64 bit, CPU: i7-7700K @4.20 GHz, GPU: Gigabyte GeForce GTX 1080 G1 8GB GDDR5, RAM: Corsair Vengeance DDR4 32GB 3000MHz, MB: MSI Z270

This is a very good news! So FSUIPC apply the patch to all type of weather?

 

Yes

 

1) about takeoff/landing distance: does this addon "false" the run for takeoff and landing or not?

 

If you use the DynamicFriction.lua script, there will be a very small effect on the takeoff/landing run. If you use the option in the .ini file there may be a significant effect on takeoff/landing distances.

 

2) Is it available a full version of FSUIPC without installing an interim module? Again, I found only version m module, which is the last?

 

Right now you need an interim version of the FSUIPC4.dll file...nothing earlier than 4.859k. Better to use 4.859m

 

3) ismit possible to modify the value parameters? I suppose yes, via LUA script?

 

Absolutely, just use a text editor to modify the values in the lua script.

 

Regards

Bob Scott | President and CEO, AVSIM Inc
ATP Gulfstream II-III-IV-V

Sys1 (MSFS20+24/XPlane12+11): AMD 9800X3D, water 2x240mm, MSI MPG X670E Carbon, 64GB GSkill 6000/30, nVidia RTX4090FE
Alienware AW3821DW 38" 21:9 GSync, 2x4TB Crucial T705 PCIe5 + 2x2TB Samsung 990 SSD, EVGA 1000P2 PSU, 12.9" iPad Pro
Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, Twin TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case

Sys2 (P3Dv5/v4): i9-13900KS, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090
Samsung 55" JS8500 4K TV@60Hz,
3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU
Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro
PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box

Sys3 (DCS/P3Dv4/ATS/ETS): AMD 7800X3D, MSI MPG X870E Carbon, Noctua NH-D15S, 64GB GSkill 6000/30, EVGA RTX3090
Alienware AW3420DW 34" 21:9 GSync, Corsair HX1000i PSU, 4TB Crucial T705 PCIe5 + 2TB Samsung 970Evo Plus,
TM TCA Officer Pack
, Saitek combat pedals, TM Warthog, TM RS300 FF wheel/pedals, Coolermaster HAF XB case

Thank you very much Scott, but can you explain me better 1) point? why is there difference between two methods?

 

I've seen that not in all airports the this addon works, yesterday I landed in Mumbay and there wasn't any difference with default or FSUIPC addon, is it a bug?

Riccardo

OS: Windows 10-64 bit, CPU: i7-7700K @4.20 GHz, GPU: Gigabyte GeForce GTX 1080 G1 8GB GDDR5, RAM: Corsair Vengeance DDR4 32GB 3000MHz, MB: MSI Z270

Riccardo;

 

The .ini option is a global change to the friction values that is in effect for the entire sim session. The .ini option also works with the unregistered version of FSUIPC. The Lua script is a more refined solution, aimed at those that want to preserve the FDE designer's TOLD performance. Lua scripting requires the registered version of FSUIPC.

 

The improvements are fairly subtle, except for the improved side friction which really improves steering. The DynamicFriction.lua script only reduces the rolling friction values when at taxi speeds (i.e. below 30 knots). It works well here...if you're having trouble with it, I am going to leave that to you to troubleshoot, as it was provided as an example of how to take advantage of the new capability with a lua script.

 

Regards

Bob Scott | President and CEO, AVSIM Inc
ATP Gulfstream II-III-IV-V

Sys1 (MSFS20+24/XPlane12+11): AMD 9800X3D, water 2x240mm, MSI MPG X670E Carbon, 64GB GSkill 6000/30, nVidia RTX4090FE
Alienware AW3821DW 38" 21:9 GSync, 2x4TB Crucial T705 PCIe5 + 2x2TB Samsung 990 SSD, EVGA 1000P2 PSU, 12.9" iPad Pro
Thrustmaster TCA Boeing Yoke, TCA Airbus Sidestick, Twin TCA Airbus Throttle quads, PFC Cirrus Pedals, Coolermaster HAF932 case

Sys2 (P3Dv5/v4): i9-13900KS, water 2x360mm, ASUS Z790 Hero, 32GB GSkill 7800MHz CAS36, ASUS RTX4090
Samsung 55" JS8500 4K TV@60Hz,
3x 2TB WD SN850X 1x 4TB Crucial P3 M.2 NVME SSD, EVGA 1600T2 PSU
Fiber link to Yamaha RX-V467 Home Theater Receiver, Polk/Klipsch 6" bookshelf speakers, Polk 12" subwoofer, 12.9" iPad Pro
PFC yoke/throttle quad/pedals with custom Hall sensor retrofit, Thermaltake View 71 case, Stream Deck XL button box

Sys3 (DCS/P3Dv4/ATS/ETS): AMD 7800X3D, MSI MPG X870E Carbon, Noctua NH-D15S, 64GB GSkill 6000/30, EVGA RTX3090
Alienware AW3420DW 34" 21:9 GSync, Corsair HX1000i PSU, 4TB Crucial T705 PCIe5 + 2TB Samsung 970Evo Plus,
TM TCA Officer Pack
, Saitek combat pedals, TM Warthog, TM RS300 FF wheel/pedals, Coolermaster HAF XB case

Many thanks.

 

Do you know if it works also with saved and resumed flight?

Riccardo

OS: Windows 10-64 bit, CPU: i7-7700K @4.20 GHz, GPU: Gigabyte GeForce GTX 1080 G1 8GB GDDR5, RAM: Corsair Vengeance DDR4 32GB 3000MHz, MB: MSI Z270

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