X-6 Cubed Tuning Guide

ManualsBrandsX Factory ManualsCars & TrucksX-6 Cubed B4 Conversion Kit (B4/4.1/4.2)

K 030 X – 6 Cubed

Instruction Manual v1.0

Tuning Section Page 43



TUNING SECTION

ABOUT ADJUSTMENTS

R/C race cars, in general, are some of the most adjustable racing machines of any

scale. What’s really amazing is just how easy and quick it is to make all of our changes:

remove a ball stud to change roll center, one screw to change springs, or tape in some

weight to change the car’s distribution. On top of that, the X – 6 Cubed is more

adjustable than most R/C cars, adding options like the transmission height and super-

easy anti-squat adjustment plus the ability to change rear pivot height..

It’s easy to get lost though, and over the years we’ve learned that at any given track,

only a few adjustments will help the car get around the track faster. 90% of set-up

changes only change the way the car feels to you. The trick is to find those few

changes that really make a difference in lap times, and use the other changes to make

the car suit your driving style. If you ever feel lost -- the car isn’t working at all and you

can’t seem to get it back on track -- change completely back to a standard set-up or

something that worked previously and start again – it’s how we learn!

When there are lap times available, pay attention to both your fastest lap and your

consistency (how close the other fast laps are to the fastest one). If your fast lap is

significantly quicker than average, work on making the car easier to drive – your third-

and fourth-fastest laps will be quicker. If the whole run is within two or three tenths of

the fastest lap, add some more steering or power and see if you can go faster.

Finally, don’t be afraid to acknowledge if a set-up change seems to have little effect, or

even makes things worse. Some adjustments are subtle, and different driving styles are

sensitive to various adjustments. Learning that an adjustment didn’t work as expected

is a valuable result – focus on other things, and perhaps try it again later as your driving

experience accumulates and set-up evolves.

DRIVING THE X – 6 Cubed

The mid-motor slim-line X – 6 Cubed is obviously a lot different than a wide rear-motor

car, and it can take a bit of practice to get used to the new characteristics. With its

weight more central the X – 6 Cubed naturally caries more corner speed. With no

“pendulum effect” from the motor hanging off the rear, the car likes taking smoother

Summary of content (10 pages)

PAGE 1
TUNING SECTION ABOUT ADJUSTMENTS R/C race cars, in general, are some of the most adjustable racing machines of any scale. What’s really amazing is just how easy and quick it is to make all of our changes: remove a ball stud to change roll center, one screw to change springs, or tape in some weight to change the car’s distribution.
PAGE 2
racing lines, while the rear end stays more planted. Watch out that you don’t slam into the motor guards of other cars through the infield! The initial disadvantage of the mid-motor concept was a lack of forward bite out of corners, especially on slick tracks. X Factory designed the 4-gear transmission to solve this problem: by turning the motor so it rotates in the same direction as the wheels, the motor itself helps transfer weight to the rear under acceleration, dramatically increasing forward bite.
PAGE 3
slipper accordingly. On super high-bite surfaces, you’ll actually back the slipper off some to prevent the car from pulling hard wheelies. The nice thing about slippers is the ease of adjustment: have a friend take a ¼” wrench out to the track, and a few brief pit stops later you can have the car completely dialed.
PAGE 4
anti-squat; with approximately 0.120” (3 mm) of rear spacing the car has 0o, so every .030” (.74 mm) of spacers is a degree less. The thin white nylon shims included in the kit are .030”; the thicker ones are .060”. More anti-squat (rear of pins down) will generally take away rear side bite, add forward bite, and let the car spring more off jumps, generating a higher arc in the air. A car with more anti-squat will ‘rotate’ easier in sharp corners.
PAGE 5
TRANSMISSION HEIGHT The X – 6 Cubed features X Factory’s adjustable-height transmission. While not the easiest adjustment, it’s a very powerful tuning tool to adapt the car to different surfaces. Included in Bag D (step D7) are several sets of transmission shims, four each of .030”, .060”, and .090”. Counting zero, that’s four transmission height positions. When you change transmission height, make sure to re-check rear ride-height (remember the race preparation list?).
PAGE 6
The rear tires are always run with toe-in, but the amount can be changed. It is adjusted by switching the rear tor-in block (installed in step E12). More rear toe-in (the 4o block) gives the car more forward traction but makes it harder to pivot the car. Less rear toe-in (the 3o block) will let the car flow through corners and pivot well, but at a loss of stability off the line and out of corners. A drag car would use lots of rear toe-in.
PAGE 7
flat front-to-rear, or perhaps a touch higher in the back. Lowering one end of the car will give that end a little more grip, but extreme differences can make it more difficult to control on the track. CAMBER LINKS Camber links are a complicated but effective adjustment on any R/C Car, and your X – 6 Cubed is no different. The inside hole groups are referred to by numbers, and the outside holes are called by letter. The more inside the hole is, the lower the value.
PAGE 8
A final note about camber links: keep an eye on the balance of the front and rear links. Having a short link up front and a long one in the back can make the car feel less confident and consistent. If you find yourself liking a long rear link, try a longer front one to go with it, and vice versa.
PAGE 9
Increase pack with #3’s and 25 wt Decrease pack with #1’s and 35 wt and all three shocks would feel very similar on the bench (static damping). Increased pack is good over smooth tracks and very good for big jumps with flat landings; it also carries more corner speed. If your car is bottoming out hard landing jumps, try increasing pack in the rear. Less pack is good for bumpy sections, as the suspension can soak up high speed movement better.
PAGE 10
THAT BODY AND… WOW, IS THAT THE WING? The body on the X – 6 Cubed is different than most other “cab-forward bodies in several respects; it was designed primarily to create traction but still looks great!ll: The rear is upswept like all X Factory bodies to generate rear traction. In the front, the X – 6 Cubed’s windshield is a bit further forward than most and has a steeper angle to create bite on the front wheels at the end of the straight and help keep the nose down in jumping.