• Oct 20, 2007


So we wrapped up our practice time at the track, and if anything is for certain, our RX-7 is going to utterly suck in traffic... unless we do something about traction. The lack of a rear hatch (weight), coupled to the cage and the integrated strut tower brace (rigidity) has made our 7 an oversteering pig. Dip the throttle more than a quarter of the way down – anywhere in the turn – and the rear is swinging around like Colin Farrell at a sorority party.

So here's the plan: we're picking up a couple of new tires this morning and then trying to play with the alignment settings at the track. More toe? More camber? We'll see. The one upside to not laying down the long pedal is that we're doing great on fuel consumption. Go figure.

We'll give you another update a bit later today and when the green flag drops at 2 PM PST, watch this space for our live blog post.


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    • 1 Second Ago
  • 17 Comments
      • 7 Years Ago
      Slide the drivers seat back as far as you can.

      But it really sounds like you're talking about unladen pickup-truck levels of rear looseness.

      Unless you manage to change the rear springs, you're doomed.

      Sounds like bags of sand for you.
      • 7 Years Ago
      How about dialing in some push with lower tire pressure in the rears?
        • 7 Years Ago
        We're already at 32 PSI in the rear and we're afraid that if we take it down, to say 30, that the sidewall is going to flex too much and exaggerate the problem.
      • 7 Years Ago
      How much toe in , in the rear ?
      • 7 Years Ago
      "...the rear is swinging around like Colin Farrell at a sorority party."

      Priceless.
      • 7 Years Ago
      I'm not remotely suggesting a big ricey spoiler or anything....but... if you just took a big piece of sheet aluminum, and bent it at a 45 degree angle in the middle, then bolted/screwed/glued/taped part of it to your back hatch area, you'd probably get a lot more downforce at speed. Unlike rice, it'd probably be functional. :|
        • 7 Years Ago
        Not really.

        At 45 degrees, the wing would be pretty useless, producing lots of drag and lots of nothing else.

        Around 15-18 degrees, most aerofoils develop a problem: Stalling. The angle is too high for the foil to function. There are workarounds - but they're complicated - like multi-plane wings.
        Basically, 7-10 degrees is the common "safe" area offering a good compromise between drag and downforce.
      • 7 Years Ago
      I have to say, without the hatch its really looking like an Rx7-camino.
      • 7 Years Ago
      NO! your car is acting correctly. on the dashboard is the autodrift switch. if you turn it off, then you'll have to pull the e-brake to become the leader of carbon canyon. if you leave it on, you'll do a tofu drift and force the 350Z off the canyon.

      don't you want to win the girl?
      • 7 Years Ago
      Again, WHY????
      • 7 Years Ago
      wider rear tires if at all possible.
      • 7 Years Ago
      hey you guys can go get a peice of 90 deg angle bar at Home Depot and bolt it on. Def give you downforce. :-)
      • 7 Years Ago
      Ha ha, i wish you good luck with adjusting the settings though if it all fails you can always throw a bag of potatoes at the back for some downforce
      • 7 Years Ago
      A lot of the posters are right.

      Removing the hatch was a really bad idea for a number of reasons, chief of which was that you have changed the aerodynamics from car to pickup. The sheet metal idea is pretty good, or you could use a large piece of plexi, bent with a heat gun.

      You have to find a way to soften up the rear suspension, perhaps removing the rear anti-roll bar and lowering the tire pressure to 25 would do it. Adding more negative camber to the rear would also help, not sure about toe unless you adjust total toe (not just one end).

      Chris.
        • 7 Years Ago
        These comments sound like they are coming from people who think that this race is a real race. It's not. There's a LOT of traffic, speeds are quite low, and the aerodynamics don't matter one little bit. Better tires are likely to cure all.

        Josh (from the July race's winning team)
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