johnliem Posted March 3, 2018 Report Share Posted March 3, 2018 Hello Pete I have a small issue with diffrential brakes I assign axis assginment send to FS as normal axis axis Left Brake set axis Right Brake set steering set (Rudder) for FSlabs 320, this also happend witth any aircraft, my rudder is MFG croswind the issue I have with diffrential brakes is when I step to my left rudder the function of the rudder is okay, but soon I step to my right rudder the rudder fuction works okay but with effect of the right brakes and when this happend I got the red text diffrential brakes (this not happend when I step to my left rudder). the calibration of my my rudder (MFG croswind) is checked. is there any way to fix this issue, thanks NB: FSUIPC version 5.124 FSUIPC5 Install.log Link to comment Share on other sites More sharing options...
Pete Dowson Posted March 3, 2018 Report Share Posted March 3, 2018 46 minutes ago, johnliem said: when I step to my left rudder the function of the rudder is okay, but soon I step to my right rudder the rudder fuction works okay but with effect of the right brakes and when this happend I got the red text diffrential brakes (this not happend when I step to my left rudder). the calibration of my my rudder (MFG croswind) is checked. This sounds like the right brakes axis is not REVERSED (REV) even though the Left one is. If you press right rudder fully down, does the differential brakes message disappear? The REV option is on the Calibration section of each axis. note that you need to RESET before setting REV then re-calibrate, otherwise the values will be all wrong. Pete Link to comment Share on other sites More sharing options...
johnliem Posted March 3, 2018 Author Report Share Posted March 3, 2018 11 minutes ago, Pete Dowson said: If you press right rudder fully down, does the differential brakes message disappear? Yes the message disappear. I will check the REV and will let you know. Thanks. Link to comment Share on other sites More sharing options...
johnliem Posted March 3, 2018 Author Report Share Posted March 3, 2018 Hello Pete, I did as you mention, I RESET thre right brake before and set REV then re-calibrate,and the issue still there, I am not sure If I did right see attechement, I did both one is checked the filter and the other one is uncheck, Link to comment Share on other sites More sharing options...
Pete Dowson Posted March 3, 2018 Report Share Posted March 3, 2018 2 hours ago, johnliem said: I did both one is checked the filter and the other one is uncheck Don't check "filter". Why did you do that? Which one is unchecked? See your picture. 2 hours ago, johnliem said: I RESET thre right brake before and set REV then re-calibrate,and the issue still there I think you must have the brakes also assigned elsewhere, possibly in the Sim, because the REV option most certainly reverses the values being sent. Just look at the "Out" values on that screen whilst you operate them. As the In value increases, the Out will decrease, and vice versa. Pete Link to comment Share on other sites More sharing options...
johnliem Posted March 4, 2018 Author Report Share Posted March 4, 2018 HI Pete I checked it to try if it makes any diffrence but now they are unchecked like the attechement, and I checked in the sim about the brake, it seem that also assigned in the sim and I uncheck it now, and the issue is gone, thanks for your help. Link to comment Share on other sites More sharing options...
Thomas Richter Posted March 4, 2018 Report Share Posted March 4, 2018 Hi, in P3Dv4 the brakes are operated when rudder is used differential, rudder left -> brake left. Check this setting in aircraft.cfgdifferential_braking_scale = 1.0 //Delta on the amount of brake when the rudder pedals deflected Thomas Link to comment Share on other sites More sharing options...
johnliem Posted March 4, 2018 Author Report Share Posted March 4, 2018 Thanks Thomas I will check that too. Link to comment Share on other sites More sharing options...
johnliem Posted March 4, 2018 Author Report Share Posted March 4, 2018 Hello Thomas I checked the aircraft.cfg of PMDG 747 but I do not see any text differential_braking_scale = 1.0, can you tell me where I can find it? thanks Link to comment Share on other sites More sharing options...
Thomas Richter Posted March 4, 2018 Report Share Posted March 4, 2018 If it is not in the aircraft.cfg then the setting is not active and you have to work on the calibration. Did you set a big enough dead-zone for brakes? Thomas Link to comment Share on other sites More sharing options...
Pete Dowson Posted March 4, 2018 Report Share Posted March 4, 2018 There is a parameter in the [brakes] section of the Aircraft.cfg file, eg toe_brakes_scale=0.640 Could that be it, or does that only adjust the fierceness of both brakes simultaneously? I see both parameters in the ProSim 737, but the default FSX/P3D 737 doesn't have the "differential" entry. I've never had to adjust the CFG for toe brake operation. Just proper calibration is all that should be needed. A good "dead" zone (i.e. set the "minimum well aboce the feet-off value) helps to avoid accidental brake application when using the rudder. I also use a slope setting with gentle start, leading to fiercer braking with heavier application -- avoids jerky stop/starts whilst taxiiing, and also can help with making tighter turns (along with differential engine thrust and good steering tiller calibration). Pete Link to comment Share on other sites More sharing options...
johnliem Posted March 4, 2018 Author Report Share Posted March 4, 2018 1 hour ago, Thomas Richter said: Did you set a big enough dead-zone for brakes? Thomas I did not set dead-zone for the brakes, only for the rudder via the software of my rudder not via FSUIPC , as pete said in the brake section of the aircraft.cfg mijn is toe_brakes_scale=1.0, should I set the dead-zone for my brake in FSUIPC? How do I do that, and which tab, can I do that, as I have never done it before. thanks. Link to comment Share on other sites More sharing options...
johnliem Posted March 4, 2018 Author Report Share Posted March 4, 2018 I set the dead-zone for the brake via my MFG croswind software, and it works fine now, thanks for the support and help. Link to comment Share on other sites More sharing options...
Pete Dowson Posted March 4, 2018 Report Share Posted March 4, 2018 29 minutes ago, johnliem said: should I set the dead-zone for my brake in FSUIPC? How do I do that, and which tab, can I do that, as I have never done it before. It is just doing the Calibration properly on the similarly named tab. There are numbered steps in the Calibration section of the FSUIPC User Guide. (If you've never used calibration I wonder what you do use FSUIPC for?) To allow a "dead" zone you simply set the "Minimum" with the brake pressed a little, so that below that (with your foot off) the minimum (= off) value is sent. Pete Link to comment Share on other sites More sharing options...
johnliem Posted March 4, 2018 Author Report Share Posted March 4, 2018 1 minute ago, Pete Dowson said: It is just doing the Calibration properly on the similarly named tab. There are numbered steps in the Calibration section of the FSUIPC User Guide. (If you've never used calibration I wonder what you do use FSUIPC for?) most of the time I use to assign a button. Link to comment Share on other sites More sharing options...
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