X-Factor X–60 Assembly Instructions Manual - page 34
X – 60 Instructions Version 1.0
Page 34
decreases, but you can do it. On the xx-4 it was discovered that toe-in at the pivot
performs differently from toe-in at the hub, so please have at it and let us know how it
works out.
Anti-squat adjusts the up-and-down angle of the rear hinge pins, thus affecting the
angle of the rear hubs. This changes the way the wheels put power on the ground and
changes the way the suspension works. Tilting the hinge pins so the rear is down
increases forward bite, reduces side bite, makes the car jump with an higher arc and
lets it accelerate better through bumpy sections. Raising the rear of the hinge pins does
the opposite: less forward bite, more side bite, flatter jumps, better acceleration in
smooth areas.
Bag C includes a Ziplock bag with 2 .030” shims and four .060” which allows anti-squat
adjustment all the way from zero to .150”. For your information, .150” of shims = about
0 degrees anti-squat. No shims = about 4 degrees anti-squat. So each .030” shim =
about 0.8 degrees. However, the Team no longer refers to anti-squat in degrees, but
rather we discuss the number of inches of shim.
Once again, you should adjust anti-squat early in your preparation for a race, taking into
consideration dogbone angle.
IT’S ALL ABOUT WEIGHT DISTRIBUTION
Everything about the X – 60 is different from a rear-motor truck, and many drivers must
learn to drive all over again. A rear motor acts like a pendulum, making the back of the
truck want to “come around” in corners or fly up like a bucking bronco over bumps. With
the weight in the center these things no longer happen.
First, you’ll carry more speed through corners. Because weight is concentrated in the
center of the truck, the X – 60 turns in better. With no pendulum effect in the back, the
rear end stays more planted. The truck naturally takes a smoother “normal” racing line
through corners rather than the “point-and-shoot” or “rotate” line now in use with rear-
motor trucks. Watch out that you don’t run into other trucks slowing down for the
corners!
Believe it or not, the X – 60’s weight distribution is almost the same as a “normal” truck,
so the Team runs springs, oils, and pistons about the same as before. (What’s
“normal” about the motor hanging out the back?) The X – 60 is more stable in bumpy
sections and is particularly good in off-camber turns.