JSMR Posted January 25, 2021 Share Posted January 25, 2021 Does anyone have this? I've used it in the past but I can't find it now. I wanted to give it another whirl. https://fshub.io/airline/RUA/overview Link to comment Share on other sites More sharing options...
tgibson_new Posted January 25, 2021 Share Posted January 25, 2021 I don't have the modified DLL file, but here is a previous post showing how the edits work: Changing Friction values in the FS2004 sim1.dll Simon External Since: Oct 26, 2006 Posts: 4 (Msg. 11) Posted: Fri Oct 27, 2006 7:08 am Post subject: Re: Changing Ground Friction Values...Can Someone Translate German? [Login to view extended thread Info.] Archived from groups: per prev. post (more info?) Hi, In my previous post details this fix I got the decoded values in the example tables wrong. This should be correct. Below is a post I did to another forum. It tries to explain about editing SIM1.dll I hope it helps. I think I have a solution. The behavior on rollout seems to be caused by a lack of friction for sideways movement, (skid friction). Note! I have only done limited testing on this. It seems to make cross wind landing rollout better, I think it helps with the tendency to rotate left or right on engine start in some big twins, not sure about this but it seems better. I may try increase the friction later. It may also fix the tendency to weathervane on high speed taxi in strong winds. Based on some work I found on a German Web sit, See my post on Oct 23rd at 12:30, I have found the following fix. First you will need a HEX editor, I use XVI32, this is freeware available at http://www.chmaas.handshake.de/delphi/freeware/xvi32/xvi32.htm The fix requires you to edit SIM1.DLL in “Flight Simulator 9/Modules†directory. Make a copy of SIM1.DLL and put it in some other directory. If you leave it in the same directory FS9 won’t load. Open SIM1.DLL with XVI32. Scroll down to the line which has 48CBA in the left hand column. The values in that line are shown below. The interesting area is in red. I have shown the entries for Wheels on Concrete and Asphalt. There are others for grass etc. So, Change E17AE43F to AE47F13F. This does concrete. For Asphalt go to the line 48CBA and repeat the above. Save and exit XVI32 Wheels, Concrete Original Microsoft Value 48CBA 00009999A93FC78424880000007B14AE47C784248C000000E17AE43FC784 My fix 48CBA 00009999A93FC78424880000007B14AE47C784248C000000AE47F13FC784 What this fix does is to change the skid friction from about 1.785 to about 1.875. The actual numbers in SIM1.DLL have a lot more decimal places than that. If you want to try different values the following may help. This is a bit techie so if you can’t sleep it may help. The numbers you are dealing with are called Single precision floating point, (32 bit). When displayed in Hexadecimal, (Hex), each pair of characters forms a single Hex character, (Byte, 8 bits). This is important when you use the Web site to translate Decimal to single. To translate the numbers between Decimal and Single Hex I use Decimal to Single Hex http://babbage.cs.qc.edu/IEEE-754/Decimal.html Single Hex to Decimal http://babbage.cs.qc.edu/IEEE-754/32bit.html Be where! In the above Web site the Bytes are reversed. So in XVI32, where you have E17AE43F, you must enter it as 3FE47AE1 on the web page. When you convert Decimal to Single Hex, if you got the result 3FF147AE you must put it in XVI32 as AE47F13F. Using my fix above as an example, I entered the original Microsoft value, (in reverse) 3FE47AE1 into the Single Hex converter. This gave the Decimal answer 1.7850000. I wanted to increase it a bit so I guessed at 1.885. I entered 1.885 into the Decimal to Single Hex converter and go the answer 3FF147AE. So remembering to reverse this, I entered AE47F13F into XVI32. That’s all there is to it. Just in case you are still awake, that’s the end of the lesson. There are various other things you can change using this technique. I have only shown how to edit the skid for Asphalt and Concrete, you can do other surfaces. Some people have played about with brake friction which was the subject of the German web site. Some say this is great and some not. I think with all of these “fixesâ€, it depends on the model you are flying. If you try any of this I would be interested to know how you get on. Some info on locations of things you can change: Tab. 1 Wheels 1) CONCRETE default Offset a) Roll Friction 1.199 48cbc (recommended : 1.00 to 1.1 ) b) Skid Friction 1.785 48cd2 c) Brakeing coeff. 1.799 48ce8 2) GRASS a) Roll Friction 1.409 48cfe b) Skid Friction 1.785 48d14 c) Braking Coeff. 1.58 48d2a .... 4) ASPHALT a) Roll Friction 1.199 48dc4 b) Skid Friction 1.785 48dd8 c) Braking Coeff. 1.799 48df0 .... 24) TARMAC a) Roll Friction. 1.199 492a b) Skid Friction. 1.785 492c0 c) Braking Coeff. 1.799 492d6 And this is an example for the actual code for table 1, Wheels, Concrete: code:48CB8 840000009999993FC78424880000007B --> 1.199 Roll Friction 48CC8 14AE47C784248C000000E17AE43FC784 --> 1.785 Skid Friction 48CD8 249000000066666666C7842494000000 48CE8 6666E63FC78424980000007B14AE47C7 --> 1.799 Braking coefficient Tom Gibson CalClassic Propliner Page: http://www.calclassic.com Link to comment Share on other sites More sharing options...
JSMR Posted January 25, 2021 Author Share Posted January 25, 2021 Wow there ya go. Who would have thought it was so easy. :p Although to be honest, it looks like the calculations to develop a EmDrive. :D https://fshub.io/airline/RUA/overview Link to comment Share on other sites More sharing options...
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