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| car feels unbalanced and had a lot of oversteer https://setup.teamxray.com/xsetup/legacy/viewtopic.php?f=8&t=18559 |
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| Author: | EPicLURcher [ Sun Feb 09, 2014 15:43:00 ] |
| Post subject: | car feels unbalanced and had a lot of oversteer |
hi, last week I was at rug racers running 17.5 blinky. It was good fun. However the car felt nervous and snapped, and had alot of oversteer in leg 1- heres the vid. Im the pale orange car started in 5th http://www.youtube.com/watch?v=5K7cUrj1f2E and heres setup xform/index.php?act=view&ID=646&setup=t4 What do i need to change to make the car happier/easier to drive? |
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| Author: | greyhead [ Sun Feb 09, 2014 17:33:03 ] |
| Post subject: | Re: car feels unbalanced and had a lot of oversteer |
| Author: | andrewd [ Sun Feb 09, 2014 19:38:48 ] |
| Post subject: | Re: car feels unbalanced and had a lot of oversteer |
See the thread below need more steering the lads have helped me loads |
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| Author: | morgoth [ Sun Feb 09, 2014 20:35:30 ] |
| Post subject: | Re: car feels unbalanced and had a lot of oversteer |
Remove the kickup 4mm shims on rear hub 1mm bump steer 0mm ackerman 6mm front and 5mm rear downstops equal front/rear ride height 2.5 springs front and rear 1.3mm rear swaybar This will tame down the car a lot if you do all these things. |
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| Author: | Skiddins [ Mon Feb 10, 2014 00:38:26 ] |
| Post subject: | Re: car feels unbalanced and had a lot of oversteer |
| Author: | EPicLURcher [ Tue Feb 11, 2014 23:36:11 ] |
| Post subject: | Re: car feels unbalanced and had a lot of oversteer |
Thanks. Ive ordered 2.5 springs and a 1.3mm roll bar for the rear. I have also changed the ackerman and camber link shims so hopefully thatll make it a lot better! Running 13.5 boosted at the next round, will that require a similiar setup? Many thanks |
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| Author: | Skiddins [ Wed Feb 12, 2014 02:58:59 ] |
| Post subject: | Re: car feels unbalanced and had a lot of oversteer |
| Author: | lpittman [ Wed Feb 12, 2014 07:26:01 ] |
| Post subject: | Re: car feels unbalanced and had a lot of oversteer |
I am having the exact same issue with a somewhat similar setup. Would someone mind to go through the suggested chages in this thread and explain why they are recommend what what the effect is? I would like to understand what to do and not just make the changes as told. Cheers! Luke |
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| Author: | DaleBurr [ Wed Feb 12, 2014 11:03:13 ] |
| Post subject: | Re: car feels unbalanced and had a lot of oversteer |
That's a very strange setup. With the wheelbase as you've got it that moves a lot of weight rearwards, which will make it very tail happy into the corners. And then the lowered front RC (on the arm mounts) will make things even worse through and out of the corners. I'd go back to a 100% kit setup and start from there, it'll be loads better. |
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| Author: | Skiddins [ Wed Feb 12, 2014 12:11:29 ] |
| Post subject: | Re: car feels unbalanced and had a lot of oversteer |
| Author: | Skiddins [ Wed Feb 12, 2014 12:13:54 ] |
| Post subject: | Re: car feels unbalanced and had a lot of oversteer |
| Author: | morgoth [ Wed Feb 12, 2014 14:48:16 ] |
| Post subject: | Re: car feels unbalanced and had a lot of oversteer |
Remove the kickup => The more kickup, the more weight transfer to the front off power => more steering 4mm shims on rear hub => Less shims on the rear hubs means more roll in the rear. This results in more entry steering, because there will be more force on the outer front tire. Going down from 4mm to 3.5mm makes my car loose on our low-med grip track. I don't want to how it would drive with only 2mm of shims between it. 1mm bump steer => more bump steer = more midcorner steering 0mm ackerman => more ackerman = more aggressive steering (and more high speed and less low speed steering) 6mm front and 5mm rear downstops => gives a neutral easy to drive car. More will make it a little harder to drive, but makes the car a little more aggressive. equal front/rear ride height => The higher the rear/the lower the front, the more steering you'll have 2.5 springs front and rear => This is a good balanced starting point 1.3mm rear swaybar => Thicker rear swaybars mean less roll in the rear. The more the rear rolls, the more force that will be put on the outer front tire. Thicker swaybars gives calmer corner entry. |
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| Author: | lpittman [ Wed Feb 12, 2014 18:01:17 ] |
| Post subject: | Re: car feels unbalanced and had a lot of oversteer |
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