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Oversteer problem on and off power
http://forum.teamxray.com/viewtopic.php?f=8&t=19333
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Author:  Aender [ Tue May 24, 2016 00:02:55 ]
Post subject:  Oversteer problem on and off power

Hi guys !

I need some help with the setup on my T4 16. It all happens on the Track in Luxemburg and the setup is based on the ETS setup 2015 from Alex Hagberg with some modifications due lack of some parts.

My problem is that the rear of the car is very nervous on and off throttle which makes it really hard to be fast on this track. I ordered new antiroll bars today. 1.3 for front and 1.2 for the rear. Does anybody have an idea how to make the car more stable ?

https://onedrive.live.com/redir?resid=35CB9B6601A7C63F!134237&authkey=!AKjNLnl9obec7SM&ithint=file%2cpdf

Author:  Racing27 [ Tue May 24, 2016 09:31:35 ]
Post subject:  Re: Oversteer problem on and off power

remove the screws from the motor mount and just run screw in 1, I find this gives a very stable rear
Change to body most people use an LTCR on asphalt, I had a GX and have hardly used it as it didn't inspire confidence
more rear toe in

Author:  Aender [ Tue May 24, 2016 09:46:00 ]
Post subject:  Re: Oversteer problem on and off power

Hi and thx for your reply.

By removing the screws from the motormount u mean all the screws except t3 and 4 from the manual ?

https://onedrive.live.com/redir?resid=35CB9B6601A7C63F!134238&authkey=!AAedc4_CnzACztQ&v=3&ithint=photo%2cjpg

Aender

Author:  Skiddins [ Tue May 24, 2016 10:34:19 ]
Post subject:  Re: Oversteer problem on and off power

The rear pivot block inserts don't add up to 2.5deg, they are not central, but you haven't ticked the boxes for 1 or 0.5 either

Author:  Aender [ Tue May 24, 2016 10:57:20 ]
Post subject:  Re: Oversteer problem on and off power

Sorry i forgot to check them. All the inserts are 0,5. I updated the Setup sheet aswell

Author:  Skiddins [ Tue May 24, 2016 11:51:49 ]
Post subject:  Re: Oversteer problem on and off power

Ok, that will be less than 2.5 rear toe, more like 2.2 on gauges.
Try putting one of them to kit blocks and see if that helps make the rear more stable.
Whilst I can run 2deg rear toe I find it makes it harder to go on power out of the corners, so a little bit more rear toe might help you.

Author:  Aender [ Tue May 24, 2016 20:05:59 ]
Post subject:  Re: Oversteer problem on and off power

Thx for your answers. I have to come back to what racing27 said about the screws. Does anybody know more about that ?

Racing27 wrote:
remove the screws from the motor mount and just run screw in 1, I find this gives a very stable rear
Change to body most people use an LTCR on asphalt, I had a GX and have hardly used it as it didn't inspire confidence
more rear toe in

Author:  Racing27 [ Tue May 24, 2016 21:37:03 ]
Post subject:  Re: Oversteer problem on and off power

Aender wrote:
Thx for your answers. I have to come back to what racing27 said about the screws. Does anybody know more about that ?

Racing27 wrote:
remove the screws from the motor mount and just run screw in 1, I find this gives a very stable rear
Change to body most people use an LTCR on asphalt, I had a GX and have hardly used it as it didn't inspire confidence
more rear toe in


IN the image you posted screw 3 is essential, you remove screw 4 with the nut and all screws 5 except for the front screw

If you look at the set up sheet the motor mount screws are numbered, front 1, next one has the option of stand or nut, then 2 and the last one nearest the rear of the car 3.

of these 4 screws only use a screw in the position 1

Author:  Aender [ Tue May 24, 2016 23:16:49 ]
Post subject:  Re: Oversteer problem on and off power

:D Ok Got it ! What about the camber settings ? I heard it would be better to run 1,5 in the fromt and 2 in the rear ? what do u think ?

Author:  Skiddins [ Wed May 25, 2016 00:06:01 ]
Post subject:  Re: Oversteer problem on and off power

Aender wrote:
:D Ok Got it ! What about the camber settings ? I heard it would be better to run 1,5 in the fromt and 2 in the rear ? what do u think ?


That really is a 'try it and see' type test, but an easy change to make at the track.
That sort of change is very dependant of the tyres and the track etc.

Author:  Aender [ Wed May 25, 2016 00:12:41 ]
Post subject:  Re: Oversteer problem on and off power

thx guys. I ll try it out on Thursday if the weather is right and post the results !

Author:  Aender [ Fri May 27, 2016 23:18:04 ]
Post subject:  Re: Oversteer problem on and off power

After testing i can confirm that your setup tips really helped.

The car handels much better now !

thx for your help

Author:  Ruben_qlc [ Sun Dec 04, 2016 01:46:19 ]
Post subject:  Re: Oversteer problem on and off power

Hello. Looking your setup I will try change the downstops to 5.5 front and 4.5 rear. Then change the rear shock positions to the 2 position.
I think your oversteed is caused by using higher position in the front shocks than the rear: lateral grip is reduced in the rear into the corner (entry, during and exit), even more imporant during and in the exit, because is where more weight is transfered.
I hope this help ;-)

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