Messages

1

Front Engine Dragsters / Kingpin bushing wear

« on: June 13, 2023, 05:51:04 PM »

My kingpin bushings are worn but I don't know how much play is acceptable.  With the weight off the tires I can rock the tire back and forth and measure 0.5 degrees of camber change.  My dial indicator has vanished so I can't get an exact clearance measurement yet. 

What is an acceptable amount of kingpin play and what is the best way to measure it?

If I need to replace the bushings, who can I send the spindles to to get them done properly?  These are PS spindles and I am pretty sure they are old style.

Thanks

2

Front Engine Dragsters / Ground clearance and tire height

« on: May 30, 2014, 10:51:13 PM »

This is my first post here.  I am getting to the finishing stages of my FED construction.  I have been figuring on 3 inches of clearance between the chassis and ground.  Is that about right ? 

My second question is on tire height.  The center of my rear axles are 9-3/4 inches above the bottom of the frame.  If we add the that figure to 3 inches of ground clearance then the rear axle centers are 12-3/4 inches above the ground.  What I cannot find anywhere is how much the tires will drop when the weight of the car is on them. 

I am using 12" rims.  The car is for brackets and NE-3 or possibly NE-2 (not sure it will have the guts for 8.60).  Any help or tire recommendations will be greatly appreciated!