No one?
| XRAY - Model racing cars https://setup.teamxray.com/xsetup/legacy/ |
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| T4 '14 base setup for CPX tires https://setup.teamxray.com/xsetup/legacy/viewtopic.php?f=8&t=13766 |
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| Author: | morgoth [ Mon Nov 18, 2013 20:37:47 ] |
| Post subject: | T4 '14 base setup for CPX tires |
This weekend we have a big race over here with handout CPX tires. I haven't run CPX tires in 2 years and that was with a T3 '11. I don't drive onroad a lot so if someone can help me with a good base setup, I'd be very happy since practice will be very limited. I'll be driving the 2014 T4 in the modified class (4.5T motor) |
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| Author: | morgoth [ Wed Nov 20, 2013 22:23:38 ] |
| Post subject: | Re: T4 '14 base setup for CPX tires |
No one?
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| Author: | coastal [ Thu Nov 21, 2013 22:13:28 ] |
| Post subject: | Re: T4 '14 base setup for CPX tires |
try this one http://www.petitrc.com/reglages/xray/se ... 201311.pdf |
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| Author: | morgoth [ Sat Nov 23, 2013 22:04:46 ] |
| Post subject: | Re: T4 '14 base setup for CPX tires |
Thanks! I started from the kit setup, but ended very closely to the setup you mentioned. The only difference is a 1.5mm shim on the rear bulkhead, 3° toe in instead of 2.5° on the sheet and a 1.3 rear rollbar and 2° rear camber. It's a technical track where you need a lot of rotation. My car is quite good at the beginning of the run, but then the front tires heat up and I start having slight understeer. I think I'll try 2.5° rear toe for Q4 and hope that improves my lap times. The car is a little to safe at the moment. Or are there other suggestions to free up the rear a little bit? |
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| Author: | morgoth [ Thu Nov 28, 2013 17:49:14 ] |
| Post subject: | Re: T4 '14 base setup for CPX tires |
The race is over, but I'm still looking to improve my car. I was a small technical track and my car is still lacking steering/cornerspeed. I raised the inner hinge pins of the A arms in the rear with the 0.5 insert. I felt like my car was more balanced during the race. Without this, the front tires would overheat after 3-4 giving me a lot of understeer. I'm still looking for more corner speed. My rear end was too planted to go fast. I'm not sure how I can free up the rearend of the car. I have tried 2.5° rear toe by widening RF with 0.5, but that made the rearend loose while accelerating after the corner. Do you have tips for me Alex? Here's the setup that I used in the finals: xform/index.php?act=view&ID=55&setup=t4_2014 |
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| Author: | Skiddins [ Thu Nov 28, 2013 19:55:57 ] |
| Post subject: | Re: T4 '14 base setup for CPX tires |
Will be interesting to see what Alex say's, but have you tried removing the front arm sweep and putting linear rear springs in? |
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| Author: | morgoth [ Thu Nov 28, 2013 20:11:55 ] |
| Post subject: | Re: T4 '14 base setup for CPX tires |
I haven't tried other springs. Practice time was very limited and I seems that the team drivers use the hard progressive springs most of the time with CPX tires. I haven't driven with CPX tires since the T3 2011, so I started with the recommended springs of the team drivers. |
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| Author: | Hagberg [ Mon Dec 02, 2013 23:48:16 ] |
| Post subject: | Re: T4 '14 base setup for CPX tires |
I would recommend the following changes to free up the rear: ECS rear driveshafts (50 mm) Front camber -2, rear camber -1.5 Front upper link shimming 2/2 Rear upper link shimming 2/4 Actually the high rear roll center on the arms which you are using will sometimes make the car feel more stuck in the rear as you will have less turn-in. -0.5 narrower rear but [·] [·] RF and -0.5 RR |
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| Author: | morgoth [ Tue Dec 03, 2013 09:49:48 ] |
| Post subject: | Re: T4 '14 base setup for CPX tires |
| Author: | morgoth [ Thu Dec 05, 2013 14:20:34 ] |
| Post subject: | Re: T4 '14 base setup for CPX tires |
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