Phenom set-up for asphalt

[53003jason]

We are running some JR1 Green plate clone(265lb) asphalt races this winter and have never raced asphalt before. I would like to get some good numbers and tips on adjusting a Phenom for a JR on asphalt. Any help would be appreciated.

Thanks Jason

 

[Ltg]

53 left, 47 nose, 58 to 62 cross, +3/8, -3.25, 6 and 8 castor. My standard advice for pavement is work with left moreso than cross. Also, air pressure and air pressure split make pretty good adjustments.

Todd
www.dynamicsofspeed.com

 

[53003jason]

What air pressure should I start out with? Also while adjusting left side when and why should I change it?

Thanks

 

[Ltg]

What tires are you on? 9 and 10 is typically within a couple of psi on air. On left it will affect how quickly the kart comes in and how the tires evolve.

Todd
www.dynamicsofspeed.com

 

[53003jason]

We r on yellow Vegas.

 

[mike]

I would say more like 12 psi.