As you can see, this isn't your
normal T-Maxx. We started out by coming up with a wheel
and tire combo that worked well. The rear wheels are
Monster Pirate wheels mounted backwards with custom
centers from our aluminum wheels. Front wheels and tires
were tough to come up with. We wanted something pretty
narrow as well as light and realistic appearing. The
front tires ended up coming from a RC aircraft and are
4.5 inches tall. We had to make custom wheels as well for
them.
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Once the wheels and tires were
figured out it was time to decide on suspension. The
truck maintains stock suspension components except for
"Big Bore" shocks and some Rix Gear
shocktowers. Front track width is narrowed by 1.500 as
well. The front of the truck needed to have some
"sag" in it when at rest to provide some weight
transfer upon acceleration. This was accomplished by
using four shocks but removing two of the springs. The
rear was pretty simple, just needed to make it fairly
stiff so the truck could "plant" the tires upon
launching.
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Next on the list was a
powerplant. It had to be insane. We had thought about
another OS but wanted something wild. One of our friends
in California came across an RB Concepts S7. As you know,
these are non pullstart engines. After some research and
design work, we figured out what was needed to convert
the RB to a pullstart. We made a few special parts to
accomplish this and it worked perfectly and we modified
our friend's RB as well. This requires some very accurate
machining of the crank as well as a few other little
parts to make the RB's pullstart engines.
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Now
that we had the engine built, suspension complete and set
up it was time to layout the chassis. We left the
steering servo in the stock spot as well as the
throttle/brake servo. However, the throttle/brake servo
now became a dedicated brake or trans brake. This is used
when "staging" the truck, the brake is locked
and engine rpm is brought up to "set" the
driveline and suspension......it works perfect. Throttle
servo was placed near the engine to avoid any bellcranks
or extra linkage. For a fuel tank we used a 75cc unit
from a Rustler. Receiver battery is mounted near the rear
of the truck to get all possible weight on the rear axle.
The truck is about a month old (8-1-02) and we are still
experimenting. It is a bullet IF you can keep the thing
in a straight line ;-). We are still designing and
changing things here and there to get the truck set up
correctly. Next on the list quite possibly will be a
solid axle four link rearend set up.
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