This is odd, and very annoying when hotlapping. Basically ill be going down the back straight of BL and ill hit 180-190mph and the engine will back off and rev down and slow me down a bit, its as if the traction control is kicking in at 190mph and taking power off me.

My mate gets this too occasionally, and i was just wondering if its a bug in LFS, or its supposed to happen, or whether its a fault with both of our games?

Anyone else get this?

Do you see the blue light of traction control (very unlikely) or the red light of the rev limiter (too low gearing).

Ill have to check that one out mate as im not too sure, never really thought to look to be honest.

Do you decellerate or do you just loose acceleration. It could be a controller issue, or a setup issue.

Lose acceleration with my foot welded to the floor. Only seem to happen to the BF1 at very high speed towards the top end of 7th gear, so it could be drag, but i wouldnt imagine drag would decellerate the car.

Quote from Stellios :

Lose acceleration with my foot welded to the floor. Only seem to happen to the BF1 at very high speed towards the top end of 7th gear, so it could be drag, but i wouldnt imagine drag would decellerate the car.

Logitech pedals are nutorious for giving problems like non-100% signals when you are driving flat out or non-0% signals when you have your foot off the pedal. If you have "Show pedals" checked in display, you would see if this is a pedal issue.

Drag wont decellerate the car, it will effect acceleration only - unless the server is running with wind conditions on as that's a whole new ball game.

Check the controls as suggested above with show pedals, also consider recalibrating them, perhaps pushing the pedal 90% down during calibration rather than 100%.

A loss of acceleration could be explained by drag/downforce or gearing. A loss of speed would probably be a controller issue.

Also bear in mind is the track going uphill (it's actually slightly downhill IIRC).

For Logitech pedals download DXtweak http://www.wingmanteam.com/latest_software/gadgets.htm

I've had this problem before. Just tried to replicate it but I can't :S.

It's not the pedals, thats definate.

I think its the limiter, although as I say, I couldnt replicate it again.

replay?

Im going in the shower now, when i come out ill try to replicate it, but it probably does it about 1 in every 20 or so laps.

eh it's gearing, it does the same thing in GT4 if you hit the limiter on a car. just make final wider (or if you really want to you can retune the gears form the ground up) that'll fix it. (but i can hit 204MPH on Bl stright with race S so i dont know if you retuned your own, or if your runing race S and it really is a glitch )

yea was just gonna say it's probably gearing. i hate when it happens in GT4, my GT40 won't pass 290 mph.

Make sure your car isn't bottoming out.

Also, don't use Traction Control levels for anything below 4%. Anything below causes problems for highspeed turns. And if you go too low, you will be forced to have less throttle in turns and it slows you down, by a lot.

I like about 6% myself, that way you're safe in the straights but still have to maintain some throttle control coming out of corners. However you can only over-do it lightly, so results in mild drifting at worse, no spins unless you're silly.

I've noticed this slowdown too. Two times in different races at Westhill just past the start/finish and once at Blackwood.

I feel it is definetly car related as it happens with NO other cars.
It feels as though you have run low on fuel & its not picking up ( Great modelling of fuel surge !! )

It's not setup as your not dragging or using TC on this bit of track.

If it was pedal related ( Wingman FF ) it would happen with other combo's and it doesn't.

It seems to be BF1 specific ( sorry ) and very intermittent.

Just found a replay,

Check out lap 2/3 on the start finish line and you'll see the car slow then almost cough as it clears and launches again.

And no laughing at the driving - this is posted as scientific proof.

Driver Racer X.

Maybe it's just a slight incline like mentioned before?

On a downhill slope & its the BF1!!!!!

Quote from Racer X NZ :

It seems to be BL1 specific and very intermittent.

Did you mean BF1 specific? Just to clarify

Quote from Racer X NZ :

On a downhill slope & its the BF1!!!!!

Just checked your replay, your pedals are playing up! 2nd lap accross start finnish you only had about 70% throttle which seemed to pull back to as little as 50% by the end of the sraight The POTs inside pedals often play up and require cleaning (by spraying some "electrical contact cleaner" into them) or it can be the POTs themselves are not secured very well and move around abit making them inaccurate intermitantely... unfortunately most mass marketed pedals use cheap components

In this case it seems to be definitely a pedal problem. Attached are two images, taken from the bottom right corner of the screen along the pitstraight at the end of lap 2, heading into lap 3 of your replay.

pitstraight1.jpg is just as you've straightened up onto the pit straight.
pitstraight2.jpg is just as you cross the start/finish line. During the replay, the accelerator bar (pale green) falls almost smoothly as you progress along the pit straight by about 25% (96 pixels to 69 pixels in height on the graphical images).

Hope that helps

[Edit] Clash of the posts. Sorry.
On the bright side, when you've fixed the problem, you'll be buttloads faster

lfs doesnt fix pedals.

This probably seems to be BF1 specific because of the huge aerodynamic drag F1 cars have at 200 MPH, lifting off the throttle in an F1 car is like a full panic stop in a road car.

Do you perchance use a Logitech Momo Racing (black one with a stick)?

My Logi Momo Racing pedals used to do the same thing, although only in LFS and not with every LFS car either. Anyway, after much patching, testing, complaining, un-patching and re-patching (which just replaced my problems with other ones and was quite annoying), I just stopped using the Logi Profiler software altogether (basically out of frustration) and I haven't had a de-calibration issue since. The wheels pretty much behaves the same as when I did use the Profiler too. Curious.