29
HIGH ROLL CENTRE
The kit is built with the front hinge pin in the high position. This pulls
the front end out of the corner harder and gives the feeling of drive.
The lower setting is preferred on carpet as it makes the front roll
more initially and in turn helps the car flow through high speed
corners better.
Higher rear roll centre (arrows up on the rr strap) using option
U8453
- C/F Rear Strap Spacer - L1R
will support the rear of the car more
and suits high grip tracks the most. Using it in dirt, the team find you
get more forward drive and makes the car more agile.
The base setting gives the best balance between steering and stability. Using a wider front hex will
make the car more aggressive. Using a wider rear hex will help with more forward drive and initial
turn in. Narrowing the rear will give more on power steering and increase side traction.
See Page 13 Bag D - Step 31
See Page 14 Bag D - Step 34
See Page 07 Bag B - Step 14
FRONT YOKE
The kit build uses Medium Flex 10 degree yokes, with options
of 6, 8 and 10 degree alloy versions. When using one of the
alloy options the team generally uses 8 degreee yokes.
Decreasing the angle offers more initial steering and on power
stability. Increasing the angle increases stability into the corner
and gives more on power steering. More caster improves
bump handling.
See Page 12 Bag C - Step 29
FRONT & REAR HEX WIDTH
See Page 13 Bag C - Step 30 & Page 14 Bag D - Step 33
GEAR DIFFERENTIAL
Geared Diffs can give variable driving characteristics. The handling of the diff is tuned
by changing the oil. A recommended starting point is 12,000 cSt (CR229).
Recommended option oils would be 10,000 cSt (CR222) and 7,000 cSt (CR221).
Running 4 gears will give less drive and off power steering. It will also make the car
drive out of the corner with a smoother arc. A 2 gear diff will make the car drive out of
the corner squarer and feel like it has more drive. 2 gear diffs are also more aggressive
on steering and rotation. Use 7,000cSt on high grip tracks, if you start spinning a wheel
on power, go up on oil until it stops.
We recommend changing the oil less often when running 4 gears.
See Page 04 Bag A - Step 29
See Page 05 Bag B - Step 12
Part Number Hex Car Width Change
REAR HEX OPTIONS
-1.50
-0.75
0.00
Kit Build
1.5mm Wider
3.0mm Wider
U8429
U7646
U7398
Part Number Hex Car Width Change
FRONT HEX OPTIONS
-0.75
0.00
0.75
1.50
1.5mm Narrower
Kit Build
1.5mm Wider
3.0mm Wider
U7646
U7398
U7402
U7403
DIFFERENTIAL HEIGHT
The base diff height setting is High at the rear and Low at the front.
Lowering the rear diff increases the traction in low grip conditions like on
dirt surfaces.
Lowering the front diff increases traction but has the additional affect of
increasing steering.
Running the diff high on carpet will help remove side grip.
On more open tracks a lower diff will help increase corner speed.
See Page 10 Bag C - Step 22
HIGH
diff.
MID
diff.
LOW
diff.
