I autocross my 5.0L powered Datsun 260Z without power steering, and I usually do not wish for the power assist. The car weighs 2590 lbs. full of fuel with me in it, and has 52 percent of the weight on the back tires. The car has Hoosier 23.5 x 9.50-15 radial slicks on all four corners, and...
There are many completed V8 300ZX's in existence. Many of their owners hang out on the HybridZ forum. I frequent that site because I have a 5.0L mustang engine in my 1974 260Z. The members there will be familiar with the details of the 300ZX suspension, and will know the modifications...
Quote,"Maybe if I get too old to continue with vintage racing I may try it again with my Mini Cooper."
That's funny. I was thinking that when I get older, I can afford to go vintage racing. Either way, I hope we're never too old to play with cars.
The datsun 240Z, 260Z, and 280Z are probably toward the far end of the spectrum as far as driver placement. My car has a 92 inch wheelbase, and the centerline of my torso is approximately 71" behind the front wheels while I drive. You would think that the long front end would make the car feel...
Agreed, you are forced to question the origin of every term in every equation and check the units. You have to go through the book with your brain engaged. I guess that is why I am chewing my way through this book so slowly.
One of the hardest things I've found about the Milliken book is his non-standard use of symbols (at least from my experience).
When Milliken says ay, he means the acceleration due to gravity.
When Milliken says Ay, he means ay/g.
His use of symbols is listed on the inside of the front cover.
I am always entertaining to watch when the car is hard to drive. When all else fails, I steer with the gas pedal.
I drove the car for the first time with the higher rate springs two weeks ago. At that time, I had the 450 lb/in springs in the rear, the 425 lb/in spring up front and a 1"...
Using the tire stiffness that you suggest (rather than assuming an infinitely stiff tire) reduces my suspension frequency to 2.2 Hz.
Still, because my car is left side heavy, my left and right frequencies won't match unless I install different springs on the left than on the right. The...
Thanks for the reply. I was going to ask about a ballpark figure for tire stiffness. I am currently using Hoosier A3S04 DOT Radials (245/45/16) on all four corners. Is the ballpark stiffness that you provided applicable? I e-mailed Hoosier about stiffness and received no reply.
As far as...
Thanks for the reply.
My car is a 1974 260Z with a 5.0L mustang engine. I've been autocrossing this car for about 5 years. Previously it was a dual purpose car (street/Autocross), but I've reached the point where it will no longer see street duty. I want to concentrate on autocross and track...
I have a question regarding spring rates for an AutoX / track day car with left side percentage greater than 50%.
Should spring rates be chosen such that the frequencies of the front wheels match each other and the frequencies of the rear wheels match each other?
The corner weights of the car...
