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keeter57
06-07-2012, 11:06 PM
We have been trying to set caster on our car tonight no matter what we do it doesnt change,we have 9.5 on the right 7.5 on left take shims from rear of a frame still the same nothing seems to matter,very confusing,cant find anything bent or out of the ordinary.Its a 76 Monte with tubular upper a arms.we have ran this setup for 4 years but caster when we started was 5.0rs 3.0 ls.Any ideas as to what could have went south?

3dracer
06-08-2012, 11:06 AM
My guess is the gauge. I have never seen that much caster possible without hitting the frame on the RF. Even if the mounts are moved, it is almost impossible...

Nor Cal Road Racer
06-08-2012, 12:53 PM
X2 on the gauge. What shape are the ball joints in? What are you trying to achieve?

DaveBauerSS6
06-09-2012, 01:11 AM
Calibration. Be sure to follow the directions. Turn in 20 degrees, set to ZERO, then swing 20 degrees out, then read caster.
If you pull shims out of the rear the caster will get worse. Put shims in the rear to move the ball joint forward reducing the caster.If those numbers were real, you should have noticed the camber move a lot too.
Good luck.

sj valley dave
06-09-2012, 02:08 PM
Easy to follow instructions for setting castor
What Caster Does To ease the amount of effort it takes to turn the wheel in our race cars, caster split was introduced into the design. Split means that we set different caster amounts into each wheel assembly so the car will want to turn to the left and thereby reduce the amount of effort it takes for the driver to hold the steering wheel when negotiating the turns. Proper split for circle track racing means the left-front (LF) wheel will have less positive caster than the right-front (RF) wheel. In some cases, teams have been known to set negative caster in the LF wheel and positive caster in the RF wheel.

To measure caster in each wheel, we use a caster/camber gauge. This tool attaches to the wheel hub. To check the amount of caster, we need to follow these instructions:

1. Attach the caster/camber gauge to the RF wheel hub first.

2. Turn the steering wheel to the right so the RF wheel has turned exactly 20 degrees.

3. Level the gauge and set the adjustable caster bubble vial so the bubble is at the zero mark on the caster side of the tool.

4. Turn the steering wheel to the left so the RF wheel is turned past straight ahead and ending up at left from straight ahead by 20 degrees.

5. Again, level the gauge, note the location of the bubble on the scale, and record the amount of caster in the RF wheel.

6. While the wheels are still turned left 20 degrees, remove the caster/camber gauge and place it onto the LF wheel hub.

7. Level the gauge and set the bubble on the caster gauge to zero.

8. Turn the steering wheel to the right past straight ahead until the LF wheel is turned 20 degrees to the right of straight ahead.

9. Level the gauge and read the caster gauge to see how much caster is in the LF wheel.



Read more: http://www.circletrack.com/howto/138_0306_how_to_measure_caster_and_camber/viewall.html#ixzz1xKC3ogVu

imracin68j
06-14-2012, 11:10 PM
put one shim on the left front bolt and call it. It will be perfect if you're reading it right.