Assetto Corsa

Assetto Corsa

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Hash Dec 8, 2015 @ 6:50pm
This is wrong
So wanted to run some gt3 in AC for some comparisons of gt3 mods, running vanilla MP4, 15 lap race, I leave Camber at the ridicusly high default camber 3.9 at front, run the race then on last lap skip to pits to check temps, big surprise, not only are the temps far too low for that kind of camber but the heat is almost equal across the tyre, it seems crazy and completely wrong, so I cant be first one to notice this, so what the verdict, am I actually completely wrong or is this a known problem?

It also appears I can just add max camber and get max grip with zero downside, makes teh whole setup side of things seem like a complete waste of time, on a smaller note the default brake balance is crazy too think like 68.

http://steamcommunity.com/sharedfiles/filedetails/?id=571865727

Edit:Just noticed in Screen as well that Blisters zero, so maybe it reset, ill have look now, check again.

Edit 2.Nope its def the readings right after race (last lap before crossing line) , and sorry was 10 laps, aparantly not allowed 15.

Second test, same but clear skys (warmer track?) little warmer temps but still low and equal after race.
http://steamcommunity.com/sharedfiles/filedetails/?id=571894746
Last edited by Hash; Dec 9, 2015 @ 4:30pm
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Showing 1-15 of 60 comments
rudski Dec 9, 2015 @ 12:31am 
Everything is working fine.

Run the tyre monitor app while driving.

You will notice the tyres heat up and cool down depending on the corner/speed and how hard you are pushing the car in general. It's working exactly how it should.

As someone who races in leagues it's important to get maximum tyre wear and avoid over-heating or under-heating your tyres and i monitor the app like a hawk sometimes and it's working in realtime like you would expect.

Also regarding camber.... When you are in the pits and you adjust the camber the live monitor only shows the camber where you are in the pits. As you drive your camber is changing heaps on every corner and you need to get something like the motec app with ACTI.

That way with those two apps you can do a lap and go back and check your camber across the whole lap and then change it depending on the results from ACTI. You can input formulas so that they tell you everything you need to know.

Yes there are some common settings for most cars but if you want to fine tune your camber you need to use the apps.
Hash Dec 9, 2015 @ 1:24am 
Ty, I will try these apps, exactly what Im looking for, still strange though the temp diffrence over the tyre, it should not be equal like that after a race,or any realistic scenario, I can see extreme events effecting tyre heat works, as I dumped a burn out exited to pit straight away and tyres 100+ but temps still appear very low right a full race,also the blister\grain meter is reporting 0 percent after race too, although tbh not exactly sure what its covering.
Last edited by Hash; Dec 9, 2015 @ 1:25am
rudski Dec 9, 2015 @ 1:31am 
Get ACTI that way you can record the lap and you will see the temps in real time. It's probably the best app you can get if you're serious about getting better.
With camber and ACTI I hear a lot of people will get an average camber across the whole track and some people (who tend to be faster) say they spec the camber to the corner they need the most speed from.
I'm honestly not that good with the setups yet but I appreciate a good setup when someone has spent the time to correctly tune it.,

rudski Dec 9, 2015 @ 1:34am 
http://www.racedepartment.com/downloads/acti-assetto-corsa-telemetry-interface.3948/

you get the Motec software with the RD download but I thought I'd chuck in the link for other stuff from Motec.

http://www.motec.com.au/software/latestreleases/
Last edited by rudski; Dec 9, 2015 @ 1:38am
rudski Dec 9, 2015 @ 1:36am 
>>> ACTI current (v1.0.0) telemetry channel list:

Basically in realtime this is all the stuff AC does car wise in the background


>>> ABS Active
>>> ABS Enabled
>>> Best Lap Time
>>> Brake Pos
>>> CG Accel Lateral
>>> CG Accel Longitudinal
>>> CG Accel Vertical
>>> CG Height
>>> Camber FL
>>> Camber FR
>>> Camber RL
>>> Camber RR
>>> Car Coord X
>>> Car Coord Y
>>> Car Coord Z
>>> Car Damage Front
>>> Car Damage Left
>>> Car Damage Rear
>>> Car Damage Right
>>> Car Pos Norm
>>> Caster FL
>>> Caster FR
>>> Chassis Pitch Angle
>>> Chassis Pitch Rate
>>> Chassis Roll Angle
>>> Chassis Roll Rate
>>> Chassis Velocity X
>>> Chassis Velocity Y
>>> Chassis Velocity Z
>>> Chassis Yaw Rate
>>> Clutch Pos
>>> DRS Active
>>> Drive Train Speed
>>> Engine Limiter
>>> Engine RPM
>>> Fuel Level
>>> Gear
>>> Ground Speed
>>> HR Sample Clock
>>> In Pit
>>> LR Sample Clock
>>> Lap Time
>>> Lap Time2
>>> Last Lap Time
>>> Max Fuel
>>> Max Power
>>> Max RPM
>>> Max Sus Travel FL
>>> Max Sus Travel FR
>>> Max Sus Travel RL
>>> Max Sus Travel RR
>>> Max Torque
>>> Num Tires Off Track
>>> Raw Data Sample Rate
>>> Ride Height FL
>>> Ride Height FR
>>> Ride Height RL
>>> Ride Height RR
>>> Self Align Torque FL
>>> Self Align Torque FR
>>> Self Align Torque RL
>>> Self Align Torque RR
>>> Session Lap Count
>>> Steering Angle
>>> Suspension Travel FL
>>> Suspension Travel FR
>>> Suspension Travel RL
>>> Suspension Travel RR
>>> TC Active
>>> TC Enabled
>>> Throttle Pos
>>> Tire Dirt Level FL
>>> Tire Dirt Level FR
>>> Tire Dirt Level RL
>>> Tire Dirt Level RR
>>> Tire Load FL
>>> Tire Load FR
>>> Tire Load RL
>>> Tire Load RR
>>> Tire Loaded Radius FL
>>> Tire Loaded Radius FR
>>> Tire Loaded Radius RL
>>> Tire Loaded Radius RR
>>> Tire Pressure FL
>>> Tire Pressure FR
>>> Tire Pressure RL
>>> Tire Pressure RR
>>> Tire Radius FL
>>> Tire Radius FR
>>> Tire Radius RL
>>> Tire Radius RR
>>> Tire Rubber Grip FL
>>> Tire Rubber Grip FR
>>> Tire Rubber Grip RL
>>> Tire Rubber Grip RR
>>> Tire Slip Angle FL
>>> Tire Slip Angle FR
>>> Tire Slip Angle RL
>>> Tire Slip Angle RR
>>> Tire Slip Ratio FL
>>> Tire Slip Ratio FR
>>> Tire Slip Ratio RL
>>> Tire Slip Ratio RR
>>> Tire Temperature FL
>>> Tire Temperature FR
>>> Tire Temperature RL
>>> Tire Temperature RR
>>> Toe In FL
>>> Toe In FR
>>> Toe In RL
>>> Toe In RR
>>> Turbo Boost
>>> Wheel Angular Speed FL
>>> Wheel Angular Speed FR
>>> Wheel Angular Speed RL
>>> Wheel Angular Speed RR
Last edited by rudski; Dec 9, 2015 @ 1:41am
Hash Dec 9, 2015 @ 1:42am 
I understand what you saying, bedtime here so will try app tommorow, however real time data isnt how I do setups, I much prefer the age old method of taking tyre temps right after pitting,and its strange results, for example my second screen was taken far faster after race, and shows me leaning heavly on front left, yet both tyres are equal temp across, think about, if leaning on that tyre (lots of right turns) with that camber, the inner of the FR should be alot higher, as its only riding the inner on right handers, where as the FL would be a lot more equal.
rudski Dec 9, 2015 @ 1:53am 
tyre heat is hard lots of stuff impacts on tyre heat and I assume you press ESC and go to pits that way to check your temps? If so that's a bad idea, do you stop in the same place on the track each time or is it randomly at any part of the track? If you press ESC at the end of the straight I'd expect lots of heat if you did it in a slow part of the track you won't see much.

But that's the problem with your method because it's too random and you can't make an informed decision because all you have is one result at one point on the track.

If you run the app you get a average/min/max results and then you can adjust PSI and other stuff to adjust heat.

Camber and heat is related but I'd be setting up camber based on speed. That means using the app and working out where your camber sucks and where it's great and then make little adjustments to improve it. Camber is about getting as much rubber on the road and the faster guys spec the camber to a specific corner on the track to get maximum rubber hence most grip and hence most speed.

It's the method that needs to be changed. think about this does a race driver ask randomly what his tyre temps are and then adjust based on that one result? or do they look at all the data across the whole lap and then make adjustments?
Last edited by rudski; Dec 9, 2015 @ 1:53am
Ragequit Inc. Dec 9, 2015 @ 6:03am 
The temps you see in the pit-screen are from the core of the tyres. Tyre surface temps during and after a race are higher and fluctuate a LOT quicker.
Hash Dec 9, 2015 @ 12:22pm 
"My method" is exactly how they do it IRL life though, and yes thats exactly how race drivers and their engineers do iit , go out 3 laps, take temps adjust,go out and repeat, I thought this was fairly commom knowledge, tyre heat tells you the story of the setup and is EXTREMLY important and I do use method perfectly in RF,GCSE and iracing, adn yuo still cant explain teh extremely weird anomaly that the tyres are equal across both tyre, something is not working how it should, will try app, but that doesnt make THIS issue go away, its wrong.

@rage, if they are core temp should still be higher, thats after a full race, and as I keep saying temps core or not should not be equal across the tyre, this is soooo important, acording to heat both my tyres entire race ,despite massive camber and a majority right hand turns, are completely flat on surface of road, thats IMPOSSIBLE with any camber, let alone 3.9

also if it was the core I wouldnt be able to do a fast burn out, jump to pit straight away and see 100+ temps on any thing other then surface, but that the reading.

Are there any AC setup wizards out there that could look at it and try explain, its really not right, also why is grain\blister at 0 per cent after a full race?this is 1x tyre wear after 10 laps of nurburg circuit.
rudski Dec 9, 2015 @ 12:45pm 
Originally posted by Hash:
also why is grain\blister at 0 per cent after a full race?this is 1x tyre wear after 10 laps of nurburg circuit.

Do you have tyre wear on? You couldn't get even 1/4 of the way through one lap without getting some grain. If you have zero grain after 10 laps you must have tyre wear off or some other thing that is messing with it.

before the next race just hit "pro setting" and then test.
Last edited by rudski; Dec 9, 2015 @ 12:47pm
Hash Dec 9, 2015 @ 1:04pm 
Originally posted by rudski:
Originally posted by Hash:
also why is grain\blister at 0 per cent after a full race?this is 1x tyre wear after 10 laps of nurburg circuit.

Do you have tyre wear on? You couldn't get even 1/4 of the way through one lap without getting some grain. If you have zero grain after 10 laps you must have tyre wear off or some other thing that is messing with it.

before the next race just hit "pro setting" and then test.

Yep tripple checked settings, as thought exactly the same, tyre wear at 1x, maybe its a bug where its turning off, but not sure, got work gonna run more tests later, cause this a big issue, Im still far more concerned with the temps,but if heating still works with tyre wear off it still very very odd results.

feel free to look yourself, this is a glaring issue so either Im doing something very wrong, or players just arent intrested enough about setups to notice.
rudski Dec 9, 2015 @ 3:21pm 
I just played and temps were as expected for me on the KTM on Nordschleife.
Quick race pro setting 4 laps.
Are you getting this on all cars on all tracks or is it a specific combo? I think you said earlier it's everything but can you confirm.
Also just to be a pain can you uplaod the ACTI file so I can check myself in motec?
install the apps and then we can see 100% if what you are saying is indeed correct.

And no, I don't believe in todays world with all the sensors one can fit to a car that they wouldn't have live temps being sent back to the pit crew engineers. I doubt they run out and just hit the tyre with a tyre pyrometer (heat gun).

A quick google search (not ideal) shows you can install a infra-red temperature sensor into the car and monitor the temps of the tyre in realtime across the whole lap which is sent back to a pitcrew. So no I think these days there are better methods to test tyre temps.
Last edited by rudski; Dec 9, 2015 @ 3:34pm
rudski Dec 9, 2015 @ 3:47pm 
To gather all that data in real time software is installed on the car with some hardware that has all the sensors plugged into it I assume
Below are some of the more typical sensors found in a race car.
Pretty cool stuff I didn't know half of it till I read through it but it all makes perfect sense why you need these sensors.

Low Air Pressure and Vacuum Sensor. The Perfect Sensor For Measuring Air Box Pressure for testing Aero Dynamics to Cooling System and Cooling and Brake Duct Air Pressures
Steering Position Sensor, Steering Angle Sensor
Throttle Position, Throttle Angle Sensor (TPS)
Throttle or Gas Pedal Plunger Position Sensor, Throttle Angle Sensor
String (Cable) Type Position Sensor (applications include Throttle, Steering, and Universal Position Sensing)
Rotary Position Sensor, can be used as a Shock or SuspensionTravel Sensor, (bell crank shock applications) Throttle Position Sensor, or any device that requires a precision rotational measurement on the race car.
EGT (Exhaust Gas Temperature) sensor
CHT (Cylinder Head Temperature) sensor
Water Temperature, Oil Temperature or other Fluid Temperature sensors
Suspension Travel Sensor
“G” Force Accelerometer:
MINI “G” Force Accelerometer:
PSI sensor Oil, Water, Fuel, Boost, Brake, Nitrous pressure, and more can be measured with these sensors.
Axel wheel, or drive shaft sensor. This sensor is used for measuring MPH as well as RPM of axle shafts, drive shaft, and input shafts. This sensor is the one of the most important sensors that you can monitor, which is why it comes standard with our "Results" and "Professional" Data systems. The sensor works by
sending a signal to the data logger when the magnet(s) passed by. This sensor will
calculate MPH, speed through the corners, clutch slip and more.
brake rotor sensor
Wide Band Air Fuel Ratio Sensor with UEGO Controller
Air Fuel Ratio O2 Sensor:
Turbo Boost Sensor
MPH Sensor
Infra-Red Temperature Sensors

Last edited by rudski; Dec 9, 2015 @ 3:48pm
Hash Dec 9, 2015 @ 3:47pm 
Originally posted by rudski:
I just played and temps were as expected for me on the KTM on Nordschleife.
Quick race pro setting 4 laps.
Are you getting this on all cars on all tracks or is it a specific combo? I think you said earlier it's everything but can you confirm.
Also just to be a pain can you uplaod the ACTI file so I can check myself in motec?
install the apps and then we can see 100% if what you are saying is indeed correct.

And no, I don't believe in todays world with all the sensors one can fit to a car that they wouldn't have live temps being sent back to the pit crew engineers. I doubt they run out and just hit the tyre with a tyre pyrometer (heat gun).

A quick google search (not ideal) shows you can install a infra-red temperature sensor into the car and monitor the temps of the tyre in realtime across the whole lap which is sent back to a pitcrew. So no I think these days there are better methods to test tyre temps.

The temps at end of few laps holds all the info, live data is fairly irrelvant when can take temp for average of whole track, you dont setup cars for one corner but the whole circuit, mate Im sorry taking tyre temps is the NUMBER ONE method of quikly getting good indication of what the cars doing around the course, this is very well documented for real life racing, yes money rich teams will ADD to that, but taking temps on inner middle and outter tells you vitually everything, engineer will talk to driver, then adjust, the methood I describe is correct, and you shoudlnt be debating that aspect.

It also pretty irrelevant what the the tyre is doing live as end results arent a realistic result,Iam on lucnh break and just tested 10 laps on nurburg sprint, worringly exact same issue, its even more worrying as the temps are almost identical to MP4, which has almost twice as much camber
http://steamcommunity.com/sharedfiles/filedetails/?id=572405135

Have you got a screen of your results? be intresting.and yeah you keep skirting the issue, live track data isnt going to fix teh very wrong end results.

Why has the KTM with a 1.3 camber got exact same temp across both front tyres as teh mp4 with 3.9, do you see what Iam saying? its imposible to have equal temps across the tyre EVEN with a car with 0 camber as diffrent turns put heat on differnt parts of tyre.
Last edited by Hash; Dec 9, 2015 @ 3:50pm
Hash Dec 9, 2015 @ 3:54pm 
Let me put other way, to get equal temps across the tyre, you would in real life run zero camber and drive straight with no turns what so ever, THEN you MAY get close to equal heat acroos tyre, however depending on tyre inflation its likely even this scnario would not produce that result ive got in AC.

This is a major issue.a perfect setup going off temps, would have the exact same diff, on inner outter and middle, like 70\80\90, that reading would tell me ive got it pretty perfect give or take couple of degrees (its never THAT perfect).
Last edited by Hash; Dec 9, 2015 @ 3:59pm
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Date Posted: Dec 8, 2015 @ 6:50pm
Posts: 60