View Single Post
  #11 (permalink)  
Old 09-19-2018, 07:57 PM
Morris Morris is offline
CC Member
Visit my Photo Gallery

 
Join Date: Dec 2003
Location: Gurnee, IL
Cobra Make, Engine: Kirkham #259
Posts: 1,396
Not Ranked     
Default

Mark

I used the Performance Trends software......as mentioned....it’s not easy to get the measurements if the vehicle is on the floor.
The best way we did it was on a lift, with a work bench we cut in half so we could simulate the road surface.....by setting the car down on 4 half size maple block work benches....we were able to level everything and take accurate measurements......which like Bob said....that is the most important part of any suspension configuration......

We removed the springs and could moved the Chassis to any position in Droop or Rebound to take measurements and prove the software was correct in it’s analysis....

So think about what you want to do......we ended up removing the whole steering assembly....and had a new rack & pinion made at Appleton And then Tom Kirkham made up new uprights so we could correct all of the bump steer issues....

Remember I did this back in 2004 before Kirkham realized they had a problem....once they realize how bad it was....Tom K & I worked out the calculations and we even changed the height of the upright and the steering arms of the upright....and it all came together when we got the car on a race track.....the difference is I knew what I was looking for and we found it as KMP259 proved to be very Quick......

Most folks and Mfg. don’t take the time or just don’t understand what it takes to sort out a car and then be willing to cut some item off and relocate the steering or pickup points, just to get the chassis to go around a corner at a higher speed.
__________________
Morris
Reply With Quote