INITIAL SET-UP
REAR FRAME HT.(measure from bottom of axle tube to top of
chassis tube)(see pg 2 for frame ht. gauge)
RR 4 1/4 in.
LR-4 in.
REAR TRAILING ARMS---TOP LT. 10 DEG UP
TOP RT. 1 HOLE UP FROM LT.
LOWER RT. 7 DEG. DOWN
LOWER LT. 5 DEG. DOWN
REAR SQUARE WITH LOWER FRAME /FRAME KICKOUT TO REAR AXLE 16
½"
PINION ANGLE 5-7 DEG. DOWN.
5TH COIL 3 TURNS PRELOAD
PANHARD BAR -LEVEL @ 2 ½ IN. BELOW AXLE C/L( if mounted to
right side)
J BAR 71/2" C/L ON FRAME MT AND LOWEST HOLE ON PINION
MOUNT(if mounted to left side)
L.R. SPRING 225 LB.
R.R. SPRING 200 LB.
BOTH REAR SHOCKS 4 VALVE
5TH COIL SHOCK 3/7 VALVE/350 LB. SPRING (HARD/SLICK 400LB.)
FRONT FRAME HT.(measure from top of lower control arm to
bottom of frame rail)
RF 3 ¾ in.
LF 31/2 in.
UPPER CONTROL ARM MOUNTS WILL MOUNT AT 4" ABOVE FRAME TO
C/L OF BOLT
R.F. SPRING 400/ 425LB.
L.F. SPRING 500LB.
R.F.SHOCK 76/4 (DRY SLICK)
R.F. SHOCK 76 (HEAVY TRACK or ROUGH TRACK)
L.F. SHOCK 75
R.F. CAMBER-2 ½
L.F. CAMBER+1 ½
R.F. CASTER +3 ½ DEG.
L.F. CASTER+2
TOE-OUT 3/16 "
REAR PCT. W/O DRIVER -1/2 FUEL LOAD-54%
LEFT PCT. W/O DRIVER-53%
DIAGONAL W/O DRIVER 54 ½ -55 ½ PCT.
L.R. BITE WILL BE ABOUT 180LBS. WITH ABOVE PCT.
O STAGGER FRONT
3" TO 4" IN. STAGGER REAR
LR SHOCK BEHIND AXLE WILL PROMOTE BODY ROLL AND TIGHTEN CAR
LR SHOCK IN FRONT OF AXLE WILL ALLOW CAR TO TURN MORE EASILY IN
MIDDLE OF TURN BUT WILL SACRIFICE BITE ON CORNER EXIT.
LOWERING THE PANHARD BAR WILL TIGHTEN CAR FROM MID POINT OF TURN
THRU EXIT
RAISING WILL LOOSEN AT SAME POINT(when mounted to right)
RAISING J-BAR WILL PROMOTE BODY ROLL AND TIGHTEN CAR IN MIDDLE
OF TURN(bar mounted to left)
MORE L.R. BITE (DIAGONAL WT.) WILL TIGHTEN CAR, BUT HIGH AMOUNTS
OF LR BITE WILL LOOSEN THE CAR ON CORNER ENTRY.
INCREASING STAGGER WILL LOOSEN CAR ON EXIT AND WILL ALSO
DECREASE L.R. BITE.
GOOD TIRES WIN RACES!!!
AFCO NOW MAKES AN RT SHOCK THAT IS DESIGNED FOR ROUGH OR
HEAVY TRACKS. THEY ARE FOR USE ON THE REAR AND CAN BE ORDERED BY
ADDING THS SUFFIX RT TO THE SHOCK NUMBER
SET-UP STICK DIMENSIONS

(1) TOP LEG 3 ¾ IN (2) BOTTOM LEG 3 ½ IN (3) OVERALL HEIGHT
4 ¼ IN. (outside dim.)
Make Gauge out of 3/8 inch steel dowel rod . Use top leg to
measure frame ht. between frame and RF lower control arm. Use
bottom leg to measure LF frame ht. at same points. Use overall
ht to measure RR frame ht. between bottom of rear and top of
rear frame lower bar. The LR ht. will fall between RF gauge and
overall ht. gauge. The front height measurements are IMPORTANT,
make certain they are correct. The RR ht should remain constant.
LR ht. may vary slightly as LR bite changes are made.
2001 5 BAR CHASSIS
THE 5TH BAR IS USED TO TAILOR THE AMOUNT OF LR BITE THAT IS
GAINED BY THE CHASSIS DURING BODY ROLL. THE 5TH BAR AT OR NEAR
THE TOP OF THE ADJUSTER WILL PROVIDE THE LARGEST AMOUNT OF LR
BITE DURING CHASSIS ROLL. INCREASING LR BITE WILL TIGHTEN THE
CAR FROM THE MID-POINT THROUGH THE EXIT OF THE TURN. THE 5TH BAR
ALSO SENSES REAR ROLL STEER RAISING THE TOP TRAILING ARMS OR
RAISING THE RT LOWER TRAILING ARM WILL INCREASE REAR ROLL STEER.
HIGH CORNER SPEED TRACKS SEEM TO PREFER THE 5TH BAR AT THE
MID-POINT OF ITS ADJUSTMENT. SHORT/ STOP AND GO TRACKS SEEM TO
LIKE THE 5TH BAR UP AS WELL AS THE TRAILING ARMS.
TO TIGHTEN CHASSIS ON CORNER EXIT
RAISE 5TH BAR
LOWER RT LOWER 4 BAR TO LOWEST HOLE
LOWER TOP 4 BARS TO 3RD HOLE FROM TOP
RAISE J-BAR ON CHASSIS
USE EASY UP SHOCK ON RF (6/4)
LOWER J-BAR ON REAR END
INCREASE LR SPRING RATE
INCREASE RF SPRING RATE
INCREASE LR BITE
DECREASE STAGGER
TO LOOSEN CAR FROM MIDPOINT THROUGH EXIT OF TURN
LOWER 5TH BAR
RAISE RT LOWER TRAILING ARM
RAISE TOP TRAILING ARMS
LOWER J-BAR ON THE CHASSIS
RAISE J-BAR ON THE REAR END
DECREASE LR SPRING RATE
DECREASE RF SPRING RATE
INCREASE STAGGER
DECREASE LR BITE
INCREASE STAGGER
TO TIGHTEN CAR ON CORNER ENTRY
ADD DAMPER SHOCK ON TOP OF REAR
INCREASE LR BITE
TO LOOSEN CAR ON CORNER ENTRY
REMOVE DAMPER SHOCK FROM TOP OF REAR END
USE TIE-DOWN SHOCK ON LR (3/7)
DECREASE LR BITE
NOTICE THAT CHANGING BITE AND STAGGER ARE LISTED LAST. THESE
ITEMS CAN SIGNIFICANTLY CHANGE SEVERAL HANDLING CHARACTERISTICS
AND SHOULD BE DONE AFTER THE PRECEDING REMEDIES HAVE BEEN TRIED.
SHOCKS
Shock valving can be used to affect the racecar at different
points in the race track.
The following chart will show shock changes, when they should
be made and in what order.