dragster front axle caster angle

Hi all,
I am about to weld the radius rod brackets onto
the axle for my slingshot dragster. What caster angle
should the axle be set at?
Thanks for the help..........

 

We always used 10 degrees.

 

When I did mine I asked everyone I could find. 10 people and I got 12 answers. Mine is at 13degrees, much more than that and they tend to lay over backing up. If you do a search there is at least one thread on this and Rooman chimed in with some advice.

http://www.jalopyjournal.com/forum/showthread.php?t=166516&highlight=rooman+caster

 

On my K-88 it's so much 14 or 15 degrees that in a tight turn the front wheels flop over.

 

If you are useing late style front tires ie goodyears,hooseirs,M/T then 9-12* ,if you are using a tire with a round (motorcycle)style crown ie avons, chin-senn etc. then more caster is needed , no more than 20*