What's the optimal weight distribution for an LSR car?

[Caveman Tony]

Aerodynamically, is 50-50 the best?

Or is it just whatever gives you the best traction?

[DanStokes]

I haven't gotten to the point that weight distribution is a big deal yet but I'd guess it depends on the car and racing surface. At ECTA I'd guess 50/50 might be a good starting point but at speed on the Salt the trick is to keep the drive tires attached to the salt so a bit more rear bias might be helpful. I know some of the racers ballast toward the rear with bolt-on weights as they look for traction.

Dan

[greenjunk]

Its aerodynamic driven by vehicle, or at least it should be. if the car has a lot of frontal lift as you accelerate more and more weight will be transferred rearward, leaving the nose light. If you don't have this problem you can run a little more weigh in the rear. I'm 51/49 ish with 500lb lift on the nose and 250lb of downforce on the rear at 200. seanm's caddy is probably 60/40, but has 90,000 lbs of lift at 200mph. :-) your results may vary.

[GH]

I was told to shoot for 51/49, it worked great on the salt, went 248.

[dieselgeek]

actually, the more on the front you can run the better for yaw stability, once you are fast enough that stability becomes a concern. we run 58% on the front of both of Sicilio's daytonas. we only put as much as necessary on the rear to keep traction, the rest goes forward for stability at speed.

[Beagle]

from what Turk has said over the years, plan on adding a lot of weight.