SC2 Sport FFB drops and wheel turns itself (ACC mostly)

Hi there, my SC2 Sport has been failing after 3 to 10 minutes of racing, for the past months. And I can’t figure out what seems to cause it. So I’m hoping to get some advice here.

Issue. FFB stops in the middle of a practice or race and the wheel turns itself to one side. Other usb devices continue to work (or perhaps reconnected quickly enough). There is no fault code in True Drive, but sometimes the application stops responding when the situation occurs.
The motor failure mostly happens in ACC, but every once in a while in other games as well. But AC is no problem, can drive that for hours straight without any issues (luckily). But, the motor did fail once or twice in AC so technically it did occur.

Tested. Replaced the powered usb hub, bought a better power strip, made sure usb ports cannot be shutdown by Windows. Monitored my pc with hwinfo for cpu and temperatures spikes. Game reinstalled incl. documents libraries. Nothing. Graphic settings in game, nvidia side, lowered graphics. Side note, I also play demanding games like Hitman 2 and Tom Raider, both on 4k ultra with no issues from the pc.

My power strip is connected to an non grounded wall socket. The fuse box in my house is grounded though. This is what worries me currently since I can’t figure out any pc related issues.

Specs. P1-X. Ascher-racing bbox flippers usb, with magnetic flippers (read about emi on the forums). And then of course pedals, shifter, bbox, handbrake. PC i7 9th gen, 2x16 GB at 3200, 2080ti msi trio, noctua cpu cooler, 850w gold. AV receiver and 4kTV are used for audio and video. Both are powered by the same strip as everything on the sim. The strip is a double 6 socket brennenstuhl. Pc power goes to a separate wall socket.

I saved the True Drive event log last time, right after the motor failed again. Would you please take a look at it for me? Any conclusion helps at this point!

Thank you, René

sc2_sport_eventlog.txt (7.5 KB)

Someone on the iracing forums had intermittent problems – it turns out one of their power supplies wasn’t plugged in properly, and when the SC2 was requesting peak power it would fail. Clearly you’ve checked lots of stuff, and probably this too, but perhaps replace the power supply to make sure it’s healthy?

Another idea: you can change the verbosity of the logs in TD – is the one you posted maximally verbose? If not, try posting that.

My current verbosity level is set to ‘Normal events and state changes’. To which setting should I change it?

Just checked power connections again and they seem ok. I never bend cables too tight on the connection side, because otherwise the (copper) mass will get damaged over time.

“…and when the SC2 was requesting peak power it would fail”. Can peak power be reached on the straight too? Because it’s then where the motor fails most of the times. Not when hitting a heavy kerb for example. I read similar stories on the forums here.

Did a test a few minutes ago and the motor failed in ACC after around 5 mins. I have set verbosity level 2 ‘FFB effect value data’, here is the log file.sc2_sport_eventlog_2.txt (7.4 KB)

I have this problem in ACC if UE4 crashes and the game exits abruptly. It sounds like your game was still running fine, right? Does cycling e-stop get rid of the issue?

This might cause some interference that could cause the PC USB port to bail out with an issue, that then causes no FFB / stuck FFB issue.

@kevinloh correct, everything keeps running.

@Mika Thanks for your advice. I will have to check whether a grounded wire runs to my wall socket, or is at least reachable. There are other ways to ground, but I read using the heating pipes in my appartment is, apparently, not the best solution electrically speaking.

Great idea somebody else had today. So half an hour ago I connected the motor directly to a grounded socket in my house, with certified camping electric cables. Why didn’t I think earlier about the fact I have 25 meters of neoprene outdoor laying around in the basement, doing nothing because I’m not going camping this year?! Stupid me.

Tested. But unfortunately a negative result. But this time I got the ACC error message 99% cpu usage. I wouldn’t be surprised if multiple issues are playing. So the coming days I’ll be testing again, still with the grounded electrics for the Simucube. But now let’s see if I can pinpoint what is happening to my CPU. I have tested that before as I mentioned in my opening post, with hwinfo64. So it seems my story continues, but hopefully a small step has been made. Update soon, thnx for reading.

If it is a USB issue there might be traces of it in the Windows event logs – check those perhaps.

Hello Botmeister,

just try only another (a new USB Cable with or without ferrit cores) from the SC2 motor to your PC directly. I think thats it. If not you can try these emi Things. Or try your SC2 on another PC if it works correctly.