Derek Posted November 28, 2009 Share Posted November 28, 2009 All right this is a little wordy so please stick with me! I have a driving simulator called rFactor. It's an awesome program. This driving SIM is the same one that's used by some of the F1 teams to train on. The physics engine is very advanced. Plus there is a huge amount of user support in the way of add on cars and tracks. These are called MODs for you old dudes like me out there. I bought the program so I could improve my driving skills since I don't have access (money) to a track. I built a driving rig out of an old seat from my 240 and a logitech G25 wheel. The G25 is nice in that it has a clutch pedal and a shifter. I did a mod on the pedals and hung them and added a load cel on the brake pedal for a more realistic feel. My driving ability and especially heal toe ability improved greatly. There was only one thing missing. An actual 240Z to drive on the track. Well being an idiot I decided I would make it my mission to make it happen. I did some checking around and and contacted one of the top mod groups to see what I could make happen. You know its just amazing how much interest you can get when you mention that you own a 3D laser scanner to a bunch of volunteer game developers! So now that I was their new best friend we hashed out a plan of action. I'd handle all of the 3D modeling work and they would take care of the physics, sounds, and other assorted mumbo jumbo that makes the thing work. Now this is where you guys come in. I need data. Lots of data. It's mind boggling how much info can be programed in. The one that really caught my eye was size and location of fuel tank so that it could factor in the weight of the fuel. Now that's thorough! This is where you come in. I'm going to looking for as much accurate info as I can get. I know some things may be averages and some will be educated guesses. But your guess is going to be a hell of a lot better than my guess. The physics guys on the team are really into creating cars that are accurate as possible and will use as much data as we provide. What's in it for you you might ask. Well nothing really unless you plan on getting a driving setup. In that case it might be a good too to keep you sharp in the off season or tune up a little before going to a new track. Or we can all meet up online for some awesome Z car racing. Most of you guy's followed me along as I went through the madness that was casting my own EFI manifold so you know I finish what I start out to accomplish so this won't be wasted effort on your part. Here is some shots of where I'm at in the modeling process on the Z. The exterior is mostly done and I'm starting on the interior. Right now it's going to patterned after the BRE car but that is just for style. The shaping isn't perfect but it will get the job done. All the handling and aerodynamics is done with the physics definitions. The 3D model is there to hang the skins. If you go on youtube and search on rfactor you can get an idea of what it's all about. Don't hate me just because I'm insane! Derek Quote Link to comment Share on other sites More sharing options...
hoov100 Posted November 28, 2009 Share Posted November 28, 2009 I dont have any info on the s30, but when it's done, can you email me a link to the mod, so i can play it on rfactor? Quote Link to comment Share on other sites More sharing options...
Darrel Posted November 28, 2009 Share Posted November 28, 2009 Make sure you download High Plains Raceway!! Quote Link to comment Share on other sites More sharing options...
jeffer949 Posted November 28, 2009 Share Posted November 28, 2009 Ok. so you have this in your shop or at home?? If its in your shop how in the world do you ever get any work done??? lol or is this what your doing when your waiting on your cnc to do its job? lol awsome. How much is this program? Quote Link to comment Share on other sites More sharing options...
h4nsm0l3m4n Posted November 28, 2009 Share Posted November 28, 2009 This is awesome! I've been playing rFactor off and on for a long time and have always wished someone would make a Z car mod for it. Really looking forward to seeing this progress. Quote Link to comment Share on other sites More sharing options...
260DET Posted November 28, 2009 Share Posted November 28, 2009 So you are looking for things like the center of gravity, weight distribution, roll centers etc. To my imperfect knowledge that info has never been published by Nissan on the S30, they did say that the C of G of a S130 was around where the shift lever comes out of the gearbox. Good luck, someone somewhere would have that info. Quote Link to comment Share on other sites More sharing options...
hoov100 Posted November 28, 2009 Share Posted November 28, 2009 Good luck, someone somewhere would have that info. I'm sure TonyD has some secrete s30 chassis data book collecting dust in his wall safe. Quote Link to comment Share on other sites More sharing options...
EvilC Posted November 28, 2009 Share Posted November 28, 2009 Derek very cool, hopefully the 240z can be made to work with GTR2 also.....check out this old thread: http://forums.hybridz.org/showthread.php?t=129471 We are going to be starting up in about a month....about 8 of us with some new comers this yr. Quote Link to comment Share on other sites More sharing options...
Derek Posted November 28, 2009 Author Share Posted November 28, 2009 Ok. so you have this in your shop or at home?? If its in your shop how in the world do you ever get any work done??? lol or is this what your doing when your waiting on your cnc to do its job? lol awsome. How much is this program? Yes and it can be a problem. I throw a sheet over it so I don't see it but then it looks eerily like the ancient astronaut in the movie alien. Don't look in the pod you idiot! The program is $40.00 and the g25 wheel and shifter is in the 250.00 range. They are coming out with a g27 so the prices may be dropping. The load cell for the brake mod is 70.00. So you are looking for things like the center of gravity, weight distribution, roll centers etc. To my imperfect knowledge that info has never been published by Nissan on the S30, they did say that the C of G of a S130 was around where the shift lever comes out of the gearbox. Good luck, someone somewhere would have that info. Here is a snip from the physics file on a mustang [bODYAERO]BodyDragBase=(0.6) BodyDragHeightAvg=(0.10) // drag increase with average ride height BodyDragHeightDiff=(0.22) // drag increase with front/rear ride height difference BodyMaxHeight=(0.20) // maximum ride height that affects drag/lift BodyLeft=(-0.7, 0.0, 0.0) // aero forces from moving left BodyRight=(0.7, 0.0, 0.0) // aero forces from moving right BodyUp=(0.0, -1.5, 0.0) BodyDown=(0.0, 1.5, 0.0) // aero forces from moving down BodyAft=(0.0, 0.5, -0.2) // aero forces from moving rearwards BodyFore=(0.0, 0.18, 0.0) // aero forces from moving forwards (lift value important!) BodyRot=(1.8, 1.4, 0.9) // aero torque from rotating BodyCenter=(0.0, 0.50, -1.100) // center of body aero forces (offset from center of rear axle at ref plane) RadiatorRange=(0.50, 0.250, 5) // radiator range RadiatorSetting=2 // radiator setting RadiatorDrag=(0.076) // effect of radiator setting on drag RadiatorLift=(0.068) // effect of radiator setting on lift BrakeDuctRange=(0.0, 0.50, 3) // brake duct range BrakeDuctSetting=1 // brake duct setting BrakeDuctDrag=(0.02) // effect of brake duct setting on drag BrakeDuctLift=(0.0525) [DIFFUSER] [sUSPENSION] PhysicalModelFile=mustang_Susp.pm CorrectedInnerSuspHeight=-1 ApplySlowToFastDampers=1 AdjustSuspRates=1 AlignWheels=0 FrontWheelTrack=1.485 RearWheelTrack=1.465 LeftWheelBase=2.750 RightWheelBase=2.750 CenterWheelsOnBodyX=0 SpringBasedAntiSway=0 AllowNoAntiSway=0 FrontAntiSwayRange=(0.016, 0.004, 5) FrontAntiSwaySetting=2 FrontAntiSwayRate=(1.36e11, 4.0) RearAntiSwayBase=0.0 RearAntiSwayRange=(0.0, 0.0, 0) RearAntiSwaySetting=0 RearAntiSwayRate=(7.60e19, 9.0) FrontToeInRange=(-1.0, 0.1, 21) FrontToeInSetting=10 RearToeInRange=(-1.0, 0.1, 21) RearToeInSetting=10 LeftCasterRange=(-0.0, 0.5, 14) LeftCasterSetting=5 RightCasterRange=(-0.0, 0.5, 14) RightCasterSetting=5 You can see there is a lot of info to come up with. Some of the settings have ranges because you can go into the garage section and fiddle with the settings. Derek very cool, hopefully the 240z can be made to work with GTR2 also.Hi Clive. Yes there seems to be quite a bit of intermingling between Simbin cars and rFactor. Derek Quote Link to comment Share on other sites More sharing options...
Tony D Posted November 28, 2009 Share Posted November 28, 2009 "Eat your Po-TAT-toes!" (Alien Reference) Come to think of it, there are some CG circles I recall on some photos I saw someplace...you could probably scale them from a known objects size in the photo... Damifino where I saw 'em though! Quote Link to comment Share on other sites More sharing options...
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