Rules - Rock Crawler Events
Electric Crawler Class
2.2 Crawler Class
2.2 Crawler class must be
based off of: Axial, TLT-1, and Wheelie King axle setups.
2.2 Crawler class is
limited to 2-wheel steering only.
Rims must be 2.2 in size
and of bead lock type. Tires must be off road inspired, having large
lugs and scale type appearance. Custom cut rubber tread designs will be
Slipper clutches and gear
type differentials are allowed.
All vehicles are limited
to 13.5 brushless or (27 turn brushed) motors, sintered rotors are also
7.4 volt (maximum) LiPo
batteries are allowed.
2.2 Crawler class
(bodiless) crawlers overall chassis dimension must be at Least: 8" long
(x) 3" wide (x) 3.75" high.
2.2 Crawler class
wheelbase is limited to a maximum of 12.5 inches. This
Measurement is taken from the center of the front axle stub to the
center of the rear axle stub.
2.2 Crawler class track
width is limited to a maximum of 12.5 inches. This Measurement is taken
from the outer most edge of right tire to the outer most edge of the
Pro Modified (Super) Crawler
Tamiya Clodbuster, Super
Clodbuster, Juggernaut 1 & 2, TXT-1, Kyosho Twin Force or any custom
built 4wd electric truck with solid differential axels.
Four wheel steering will
Tires shall be any
off-road inspired tire, having large lugs and scale type appearance, no
smaller than: 5” tall (x) 3” wide. Custom cut rubber tread designs will
Pro Modified crawlers may
run (2) 13.5 brushless (or 27 turn brushed) motors, sintered rotors are
7 cell maximum (brushed)
7.4 volt (maximum) LiPo
Pro Modified (bodiless)
crawlers overall chassis dimension must be at
Least: 12" long (x) 3" wide (x) 3.75" high.
Nitro Crawler Class Definitions
Nitro Crawler must be of
solid axle construction. (Kyosho Mad Force, XTM XFactor, or any custom built
Nitro crawler based on solid axle construction.)
Four wheel steering will be
Tires shall be any off-road
inspired tire, having large lugs and scale type
appearance, no smaller than: 5” tall (x) 3” wide. Custom cut rubber tread
designs will be allowed.
Nitro Crawlers may utilize
any Nitro burning engine from .12 and larger.
Cantilever type suspension
will be allowed.
General Crawler Class
(Bodied crawlers): Must
resemble any “real” bodied crawler.
(Bodiless crawlers): Must
include: hood, roof, and two side-panels. Bodiless crawlers should resemble
a “real” bodiless crawler.
Vehicles with independent
suspensions are not allowed.
Winching down of axles is
allowed. Winch line must be attached within a 1/2" of the center of the
axle, by a single attachment point.
Active Suspension is allowed.
Suspension which is interlinked and moves part of the suspension in one
direction when moved from another.
Forced Articulation is
allowed – Forced articulation is the use of hydraulics or electronics to
force the suspension to move in a driver controlled manner.
General Crawler Event Rules
Vehicles cannot be exchanged
for another vehicle during competition.
You cannot run the same
vehicle in more than one class.
Course “Crawling” format
Starting order will be
determined by the order of sign up.
No practicing of courses.
Drivers caught practicing will receive a DNS for that course.
Scoring starts as the vehicle
brakes the plane of the first gate of a course. Scoring stops when the
Vehicle breaks the plane of the last gate of a course.
No modification to a course
is allowed by the driver.
After a crawler starts a
course no changes can be made to the crawler. (Other than winching down of
suspension or forced articulation by the driver).
Winching (Other than done to
the suspension) is not allowed.
Drivers may make changes to
wheelbase, track width, and tires between courses runs, as long as the
vehicle remains within the specs for its class.
All vehicles and their
components are subject to inspection and approval by the R/C Monster
Motorsports Track Official. Any components deemed unsafe to you and/or other
competitors, bystanders, spectators, and/or track officials must be removed
before the vehicle in question can compete.
Course “Judged Crawling”
Courses will be judged by R/C
Monster Motorsports track officials.
(Course): A course is the terrain which consists of a start gate, end gate,
and all the terrain in between them. Every course has an intended direction
of travel or “flow”.
(Gate): A gate is used to
mark an obstacle within a course and or guide a crawler through a course. A
gate consists of 2 gate markers measuring no less than 20” wide. Every gate
marks the direction or “flow” of a course. All gate markers are “live” until
Gates are marked by
Tennis Ball halves.
Gates will be a Minimum
of 20" apart.
Gates which are in close
proximity to each other will be distinguished by color or markings.
Scoring and Penalties
The crawler with the lowest
combined score wins the event.
Progress -1 point -
Deducted for each gate successfully cleared with all four tires (Excluding
start and finish gates)
Reverse +1 point - Added when a crawler reverses a course after
Touch +5 points - Added when a driver or judge calls a touch or
reposition of a crawler
Rollover +5 points - Added when a crawler rolls over and needs to be
up righted by the driver
Gate marker +10 points - Added when a gate is touched or straddled by
Boundary marker +10 points - Added when a crawler touches a boundary
DNF +40 points - Added when a crawler does not successfully complete
DNS +50 points - Added when a crawler does not start a course
Maximum penalty points per
gate is 20 points. Once a crawler has reached 20 points, the crawler will be
repositioned past that gate by a track official. No progress points will
Maximum penalty points per
course is 40 points. Once a crawler has reached 40 points, a DNF will be
issued for that course.
All gates must the cleared in
the intended sequence of the course layout (gate 1, then gate 2, then gate
3, and so on).
Crawlers must travel in the
intended direction and in correct sequence of a course in order to clear an
Attempting and un-cleared
gate out of sequence is prohibited.
A crawler may travel through
a gate while it is in reverse and still clear that gate as long as it only
travels though in the intended direction (reverse penalty(s) will be
assessed as necessary).
R/C Rock Cross “Racing”
R/C Rock Cross takes the sport of
rock crawling to a whole new level by adding a touch of high intensity multi lap
off road racing. Crawlers can now put the pedal to the metal with high speeds on
a modified off road course specifically designed with rock obstacles, jumps,
ruts, and whatever else you can crawl over.
R/C Rock Cross will follow the
same format of multiple vehicle / multiple lap off road racing.
Qualifying is side by side multiple lap qualifiers. Qualifying will have
three crawlers competing at one time for five laps. Drivers will complete three
rounds of qualifying before being seeded in the elimination rounds or (mains)
Eliminations follow a side by side elimination format with a twist from off
road racing. After each driver has qualified, they are seeded into a three
crawler side by side elimination round or (main). The “Top Qualifier” and second
fastest runner up from the three rounds of qualifying puts them in the finals or
A-main spot. Third and fourth fastest times are seeded into the semi final or
B-main spot. Fifth and sixth fastest qualifying times will be seeded into the
C-main, and so on. Here’s how things get interesting. A driver in the Z-main can
advance all the way to the A-main final match up by winning their round and
advancing or “bumping up” to the next round.
The final round or “A main” in R/C Rock Cross is a three crawler side by
side, 10 lap feature event. The first Crawler to cross the finish line after
completing ten laps is declared the winner. Turn marshalling will be required of
all participants. Drivers from the previous rounds of racing will be used to
marshal the following heat (minimum of 2, volunteers may be necessary).