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What is
it about 4WD buggies that makes you want to push them
harder, jump them farther and dive them deeper into
corners? It isn't hard to figure out; with all of its
wheels hooked up, your 4-wheeler can stay on the gas
longer and plow into corners farther than any 2-wheeler.
Unfortunately, this means you're gonna hit stuff that much
harder, and that means more damage. With this in mind, and
knowing there's a 99-percent chance that anyone who runs a
4-wheeler has a Losi Triple-X4, we figured out a few
beef-up tips for Losi's one-belt wonder. If you never hit
anything, there are better ways to spend your time (such
as filling out sponsorship resumes). For the rest of us,
these tips will make our Losi 4WD machines just about
crash-proof.
SUSPENSION BEEF-UPS
STRONGER
SUSPENSION ARMS
Dennis Mong at DPM Racing manufactures machined-Delrin
suspension arms that are much more crashworthy than the
stock parts. The Delrin arms are CADdesigned and CNC-machined
with extra material at all of the stress points. Two
additional lower shockmounting locations let you further
dial in your buggy. They weigh a bit more than the stock
arms, but they're much stronger, and that makes up for the
small weight increase.
TITANIUM
TURNBUCKLES, HINGE PINS AND SCREWS
The first upgrade you should make to any off-road buggy or
truck is a complete set of titanium turnbuckles and hinge
pins. Titanium is stronger and lighter than steel, and
that makes it a welcome material on any racecar. Lunsford
Racing offers a complete titanium turnbuckle and hinge-pin
set (item no. 4056).
While we
were at it, we also installed Lunsford's new 6056 titanium
screw set and a set of Quick Tune shock mounts.
TOUGHER TOWERS
A disadvantage of buggies is their exposed shock towers.
If your car endos, the shock towers usually take the brunt
of the abuse. Fortunately, Team PRP manufactures 2mm
graphite braces that markedly strengthen the stock front
and rear molded shock towers. The rear brace includes
aluminum spacers that are mounted solidly against the
molded rear tower. They are perfect for Triple-X4 owners
who don't have Losi's upgraded chassis with molded-in
bulkhead bracing. Stainless-steel mounting hardware is
also included.
DIRT-PROOF DRIVE TRAIN
Losi's single-belt drive train is pretty well sealed, but
dirt can still work its way in through the seams where the
front and rear bumper covers meet the lower chassis. To
counter that, just place a piece of electrical tape over
the diff opening before you install the bumpers. Also, use
few pieces of tape around the edges of the Lexan spur-gear
cover. This makes it even more difficult for unwanted dirt
to get into the system.
CHASSIS TRICKS
TAP
HIGH-USE SCREW LOCATIONS
Losi kindly includes a tapping screw that helps cut
threads into its strong Stiffezel and graphite parts, but
nothing compares to a proper tap kit when you have to make
strong, clean threads. This is especially important for
screw holes where screws are often loosened and tightened,
such as the lower shock points on an A-arm. The
well-tapped hole is less likely to be cross-threaded or
stripped. Just $20 will buy you a good tap handle and all
the metric and standard taps you'll ever need.
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BEEFIER BALL STUDS
Camber-link ball studs are some of the most stressed parts
on an off-road car. If one fails because of breakage, not
only will it cost you the race, but you might also have to
replace the molded piece the ball stud is mounted on. Most
pro drivers replace steel ball studs with stronger
titanium units. If you don't have the cash to buy titanium
ball studs, you can strengthen the steel ones (and your
shock towers) by using a longer ball stud and then placing
a 4-40 locknut on the other end. This spreads the load
area placed on the stud across the front and rear of the
tower. Your shock towers will thank you.
STRONGER INNER PIVOT MOUNTS
There's little doubt that graphite parts are lighter and
generally stronger than their standard, molded
counterparts, but you can drastically increase the
durability of the suspension system by using Losi's
aluminum inner pivot mounts. These hardanodized,
machined-aluminum blocks are available in different angles
to suit your track. Combine them with titanium hinge pins
and graphite or Delrin arms, and you may never break a
suspension piece again.
We put our Triple-X4 buggies through lots of abuse to test
these tricks and hop-ups, and they came away with only
scratched bumpers and bashed-up wings. Add beefier
titanium hardware and stronger aftermarket components, and
you'll be able to take your Triple-X4 to the A-main with
confidence. Remember: the little things can make the
difference between a car that finishes a race and one that
gets a "DNF." We know which one you want to have.
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