[Land-speed] King Pin Bearings

[Skip Higginbotham]

No problems since I fixed the scrub radius. The car is solid as 
always and the steering is now easy. Too much scrub radius in the 
past has put a significant load on the steering system that held the 
car still on the run. In the event of a blowout on the front, the 
driver would have likely lost control of the car when all the weight 
was concentrated on the remaining tire.

What I'm trying to fix now is inaccurate alignment....or at least 
unknown alignment. With the inline system I am not able, so far, to 
set the "toe in" accurately. I have used lasers and straight edges 
and when I get done setting it, I run the car back and forth on the 
shop floor and the wheels seem to flop and get out of alignment. This 
is because there is no opposing forces on a tie rod to keep 
everything in proper alignment since there is no conventional tie 
rod......I guess. There is considerable caster so slop is magnified.

So I have simply sighted them in when the car is moving "forward" and 
it seems to work. Tire wear is non existent so I think that it is OK. 
Still looking for something better. The Speedway Motors kit should do 
it or at least help, I hope.

Skip




At 11:57 PM 2/26/2010, you wrote:
> From my experience well fitted bushings appear to have no slack . 
> With bushing the amount of clearance is in the hands of the man 
> doing the fitting . I believe lathe heads always have bushings 
> because roller bearings have too much slack . . Have you had 
> handling or wheel flutter problems .