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Thread: U4RC Rock Racing info.

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    President JSLICK's Avatar
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    U4RC Rock Racing info.

    http://www.u4rc.com/?page_id=23

    About U4RC

    The U4RC concept is edge of control short course R/C on steroids. This is not groomed tracks, and traction compound! A U4RC track combines not only the toughest desert sections, but big technical rocks, silt/sand washes, the steepest hill climbs and of course terrifying descents. U4RC is heads up heat racing against your friends and family. Timed/scored heats let you know how you rate against the competition every day, and with competitors around the world. U4RC is taking your track experience to the next level of adrenaline.

    All Classes

    *Revised 10/22/2014*

    All vehicles must be 4 wheel drive. Motor on axle vehicles are not allowed. Short course style vehicles are not allowed. Batteries, electronics and connectors cannot be openly visible with the exception of the 1.1 Comp class (stock Twin Hammers). Electric powered vehicles only. No comp, short course, Cut n shut, or pin tires allowed. A tire for U4RC rock racing must be a scale looking tire, either a licensed replica, or a non-licensed replica. Rigs not meeting specific class specs will be placed in the closest class possible at the tech official’s discretion. If you have illegal tires, improper panels covering the electronics, or your car is without a driver/insert, you will be able to race that day, but by the next race event your vehicle needs to be fully legal for a given class. Tech of the cars will occur prior to the race, or at any time throughout the day when a question or dispute about a vehicles specification arises either through dispute or at the race directors discretion. Heats will be 8 minutes and mains will be 10 minutes except for the 1.9 comp class which is 8 minutes across the board due to battery size.

    1.9 Trail

    Class Specs:

    1.9” Wheel Diameter

    Solid Axles Only

    Scale Body

    Max Wheelbase: 13”

    Max Width: 10”

    This class is for 1.9” tire and wheel clad vehicles that are box stock thru highly modified. Vehicle should resemble something you would see on a 1:1 trail, not a highly modified race vehicle. Vehicles must have (2) solid axles, and center transmission/transfer case. Weighted Knuckles are allowed but must be of an integral weighted design. If the knuckle can still function with the weighted portion removed, it is not legal with the external weights attached. Vehicles must have rail style, tube, or a twin vertical plate chassis with a scale lexan body that resembles a 1.9” “scale rig, or tuff truck”. Wheelbase must not exceed 13”, and track width must not exceed 10”. Tube chassis vehicles must have an interior. Driver optional.



    1.9 Competitor

    Class Specs:

    1.9” Wheel Diameter

    IFS or Solid Axle

    Scale Appearance

    Max wheelbase: 13”

    Max Width: 11”

    This class is for 1.9” tire clad rigs that are highly modified and resemble full size race vehicles. Vehicle must be scale in appearance for rock-race style racing. This class rigs running plastic chassis and/or roll cages. Open to any shaft driven, non-moa axle configuration. Independent suspension is allowed. Weighted knuckles must be of an integral weighted design. If the knuckle can still function with the weighted portion removed, it is not legal with the external weights attached. Rim diameter must not exceed 1.9” at any point. Short course style rims are not allowed. Rail style, tub style, and tube chassis are allowed. Wheelbase must not exceed 13”and track width must not exceed 11”. Rear steering is allowed. The vehicle must have a driver or insert installed. This is only class that has 8 minutes qualifiers and 8 minute mains. Due to size of batteries.



    1.9 Trophy

    Class Specs:

    1.9” Wheel Diameter

    IFS or Solid Axle

    Metal Cage Only


    Scale Appearing


    Scale Driver with Helmet


    Max wheelbase: 13”


    Max Width: 11


    This class is for 1.9” tire clad Ultra4 style rigs that are highly modified and highly resemble full size rock race vehicles. The emphasis in this class is appearance first and performance second. This class only includes vehicles running full metal roll cages or, a metal cage attached to a custom or factory skid/pan. Skid/pan is defined as a partial pan chassis, attached to a solid rear axle, or a vehicle using any factory molded skid/pan. Example: Vaterra Twin Hammers, custom, all tube. No plastic roll cage components are allowed except skid/pan. Open to shaft driven, non-moa axle configurations, with a center transmission/transfer case. Weighted knuckles must be of an integral weighted design. If the knuckle can still function with the weighted portion removed, it is not legal with the external weights attached. Rim diameter must not exceed 1.9” at any point. Short course style rims are not allowed. No comp, short course, cut n shut, or pin tires are allowed. A tire for the U4RC must be a scale tire, either a licensed replica, or a non-licensed replica. Rail style and tube style chassis are allowed.
    See minimum chassis dimensions, and other restrictions below.

    Minimum Weight: 7 lbs
    This is the weight of the vehicle ready to race.
    Overall Chassis Minimum height: 5.00”
    This is the measurement from the bottom of the skid/pan to the top of the roof without light bars etc…
    Overall Chassis Minimum Width: 5.00”
    This is the minimum with at the door panels extending the entire length of the door panel and window Opening.
    Door Panel Minimum Length: 3.75”
    This is the minimum length of the door panel.
    Side Panel Minimum height: 1.50”
    This is the minimum height of the side panels at the driver and passenger door area.
    Window Opening Minimum height: 2.00”
    This is the window opening Minimum height for both the driver and passenger side of the vehicle. This is measured from the top of the roof to the top of the side panel at the driver’s compartment.
    Minimum Roof Panel: 2.75” x 4.00”
    This is the front to back x side to side minimum roof measurement.
    Minimum Overall Chassis Length: Wheelbase length
    This is the length of the overall chassis structure from front to rear excluding light bar mounts,
    bumpers, stingers, spare tires, winches, etc…
    Chassis Structure:
    This is defined as the tubular portion that includes the driver compartment, upper shock mounting points front and rear, and engine cover area as part of the chassis.
    Engine Cover Area: Panels and tube
    This is a scale first, performance second class. The engine compartment, either front or mid, must be covered by panels (inner fenders). The vehicle must appear as though a scale 1:1 race engine is present. Scale motors or panel concealed areas where 1:1 engine would be located are required.
    Driver figure:
    Either molded driver interiors, or figures are required. Driver and passenger must both have helmets and an upper torso minimum. No non-human figures.




    2.2 Competitor: LIMITED

    Class Specs:

    2.2” Wheel Diameter

    Solid Axle only

    Scale Appearance

    Max Wheelbase: 14.5”

    Max Width: 13”

    Minimum Weight 6lbs

    With Battery Installed

    This class is for 2.2” tire clad vehicles that are box stock thru slightly modified. Vehicle must be scale in appearance for rock race style racing. Example: Axial Wraith/Ridgecrest RTR kits with upgraded electronics, wheels and tires, but no major suspension geometry modifications. IE: Trailing arms front or rear. Shocks must be attached to both front and rear axles at the bottom of the shock. The upper shock mount can be modified. This class includes rigs running plastic chassis, roll cages, and twin vertical plate chassis. Open to any shaft driven, non-moa axle configuration. Double solid axle only. Weighted knuckles must be of an integral weighted design. If the knuckle can still function with the weighted portion removed, it is not legal with the external weights attached. No comp, short course, or pin tires allowed. A tire for this class must be a scale tire, either a licensed replica, or a non-licensed replica. It has to look like something you would see on a 1:1 trail, race, or street rig. Wheelbase must not exceed 14.5” and track width must not exceed 13”. Rear steering is allowed. Must have interior, either stock or other molded drivers can be used, as well as full or partial action figures. We would like to see drivers in the car, but we understand if it is your first race. (No Animated Characters)



    2.2 Competitor: OPEN

    Class Specs:

    2.2” Wheel Diameter

    Solid axle , IFS and/or IRS


    Southern Rock Bouncer

    Scale Rock Racer Appearing


    Max wheelbase: 14.5”

    Max width: 13”

    This class is for 2.2” tire clad vehicles that are slightly modified thru heavily modified. Vehicle must be scale in appearance for rock race style racing. This class includes rigs running plastic or metal chassis and/or roll cages. Open to any shaft driven, non-moa axle configuration. Double solid axle and IFS. Weighted knuckles must be of an integral weighted design. If the knuckle can still function with the weighted portion removed, it is not legal with the external weights attached. No comp, short course, or pin tires allowed. A tire for this class must be a scale tire, either a licensed replica, or non-licensed replica. It has to look like something you would see on a 1:1 trail, race, or street rig. Wheelbase must not exceed 14.5” and track width must not exceed 13”. Rear steering is allowed. Must have interior being stock, hand fab, or driver inserts. We would like to see drivers in the car, but we understand if it is your first race. (No animated character).



    Trophy 2.2

    Class Specs:

    2.2” Wheel Diameter

    IFS or Solid Axle

    Metal Cage Only


    Scale Appearing

    Scale Driver with Helmet

    Max wheelbase: 14.5”

    Max Width: 12.5”

    This class is for 2.2” tire clad Ultra4 style rigs that are highly modified and highly resemble full size rock race vehicles. The emphasis in this class is appearance first and performance second. This class only includes vehicles running full metal roll cages or, a metal cage attached to a custom or factory skid/pan. All upper shock mounts must be part of the metal chassis structure. Skid/pan is defined as a partial pan chassis, attached to a solid rear axle, or a vehicle using any factory molded skid/pan. Example: Axial Wraith, Axial Yeti, custom, all tube. No plastic roll cage components are allowed except skid/pan. Open to shaft driven, non-moa axle configurations, with a center transmission/transfer case. Weighted knuckles must be of an integral weighted design. If the knuckle can still function with the weighted portion removed, it is not legal with the external weights attached. Rim diameter must not exceed 2.2” at any point. Short course style rims are not allowed. No comp, short course, cut n shut, or pin tires are allowed. A tire for the U4RC must be a scale tire, either a licensed replica, or a non-licensed replica. Rail style and tube style chassis are allowed.


    See minimum chassis dimensions, and other restrictions below.


    Minimum Weight: 8 lbs
    This is the weight of the vehicle ready to race.
    Overall Chassis Minimum height: 5.25”
    This is the measurement from the bottom of the skid/pan to the top of the roof without light bars etc…
    Overall Chassis Minimum Width: 5.25”
    This is the minimum with at the door panels extending the entire length of the door panel and window Opening.
    Door Panel Minimum Length: 4.00”
    This is the minimum length of the door panel.
    Side Panel Minimum height: 1.75”
    This is the minimum height of the side panels at the driver and passenger door area.
    Window Opening Minimum height: 2.25”
    This is the window opening Minimum height for both the driver and passenger side of the vehicle. This is measured from the top of the roof to the top of the side panel at the driver’s compartment.
    Minimum Roof Panel: 3.00” x 4.25”
    This is the front to back x side to side minimum roof measurement.
    Minimum Overall Chassis Length: Wheelbase length
    This is the length of the overall chassis structure from front to rear excluding light bar mounts,
    bumpers, stingers, spare tires, winches, etc…
    Chassis Structure:
    This is defined as the tubular portion that includes the driver compartment, upper shock mounting points front and rear, and engine cover area as part of the chassis.
    Engine Cover Area: Panels and Tube
    This is a scale first, performance second class. The engine compartment, either front or mid, must be covered by panels (inner fenders). The vehicle must appear as though a scale 1:1 race engine is present. Scale motors or panel concealed areas where 1:1 engine would be located are required.
    Driver figure:
    Molded driver interiors, or figures are required. Driver and passenger must both have helmets and an upper torso minimum. No non-human figures.



    Heat Formats:

    ** Event scoring may be slightly different to suit your local track needs, check with race director at sign ups**

    We will be doing 1 round of HEATS, LCQ and or B-Main and A-Main. There will typically be 8 cars that make it to the final. If there are not enough cars in a class all cars will transfer to the Main and they will be racing in the Heats for (Main)start positions. Heat Rounds and LCQ/B-Mains will be 8 minutes (subject to change because of weather). On very hot days round times could drop to 6 minutes. A-Mains will be 10 minutes except for 1.9 Competitor(8 Min due to battery size). The break down is as follows:

    4-8 cars:

    All transfer to the Mains

    With 8 cars there could be 1 Heat of 8, and the top 4 transfer and 4 cars left for LCQ and 2 will transfer.

    10 cars:

    2 heats of 5

    3 transfer

    LCQ 4 cars

    2 transfer

    8 car Main



    16 Cars: 18 Cars:

    2 heats of 8 3 heats of 6

    3 transfer 2 transfer

    2 LCQ heats 6 2 LCQ heats of 6

    1 LCQ transfer 1 transfer per LCQ heat

    8 car Main 8 car Main


    20 cars:

    4 heats of 5

    1 transfer

    3 LCQ heats of 5,5,6

    1 transfer per LCQ heat

    7 car Main.

    Race Day Info
    • Starting positions in the Mains may or may not be inverted at the discretion on the race director.

    Heat/LCQ races starting positions are; first come first choice basis.


    Mains starting positions are; fastest (heat)lap time gets first lane choice and so on.


    All races are to be stopped immediately when a “non-registering” transponder is discovered, then;

    1.
    If the transponder is missing, the driver is responsible for helping find it and once it is secured back in the car the race will continue. The car won’t be issued another transponder until all efforts have been exhausted.

    2.
    If the transponder has malfunctioned then it is U4RC’s responsibility and the driver will be issued another transponder and allowed to rejoin the race.

    3.
    If the issue occurs within the first lap the race will be restarted ASAP.

    4.
    If the issue occurs at any point after the first lap, the problem will be addressed and then race will continue for the remaining time of the race.


    Race day format will run as follows;

    1.
    Heats: typically 8 min all classes (except on day where the temperature is really hot) = 1.9 Trail, 1.9comp/Trophy, 2.2Comp (Limited), 2.2 Comp (Open), 2.2 Trophy refer to Heat Format for transfer positions.

    2.
    LCQs: typically 6-8 minutes. Refer to Heat Format. If you don’t transfer to the main then you will be in the B main. After transfer positions the top 8 fastest times will transfer to B main.

    3.
    B-Mains: typically 10 min race (8min for 1.9 Comp).The B-mains consist of LCQ drivers not qualifying for the A-mains. Racers in the B- main will earn reduced series points.

    4.
    A-Mains: typically 10 min race (8min for 1.9 Comp)


    Drivers are to “sign out” and “sign in” transponders before and after each race.


    There will typically be a short break between the Heat/LCQ rounds and the start of the Main rounds. Breaks will be announced by the race director as early as possible before the break.


    Turn marshals are NOT allowed to perform repairs on rigs during their TM duties. If a rig breaks on course, the TM is to place the rig “off course” and continue on with their Duties. It is the drivers’ responsibility to retrieve and repair the rig.


    Taking safety and driver vision into consideration the restricted items on course while performing TM duties are; beverages, food, extra-large hats (straw gardening hats are ok), umbrellas, open toed shoes, ice chests, chairs, etc. Basically TM’s are expected to have both hands free while the race is running.


    Drivers are responsible to Turn Marshall the race immediately after their race. It is racers responsibility to find a replacement if they are run in multiple classes. If a driver is unable to perform TM duties they should inform the U4RC staff upon registration, so other arrangements can be made.


    U4RC Series Scoring

    Heat Race (transfer points)

    3 Points = 1st

    2 Points = 2nd

    1 Point = 3rd

    B-mains

    50 points = 1st

    45 points = 2nd

    40 points = 3rd

    And so on………..

    A-mains

    100 points = 1st

    95 points = 2nd

    85 points = 3rd

    And so on………..
    EPARCCrawlers President

    2010 1.9 Inaugural Champion
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    2012 Club Champion 1.9, 2.2, Class 1, Class 2
    2013 Class 2 Scale Season Champion
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  2. #2
    Sage member cjsmith4's Avatar
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    alright...you have my interest! I have actually been looking at some short course stuff (Mainly buggies) because there are two or three tracks within a half hour drive of where I live now. Where would they race these things?

  3. #3
    President JSLICK's Avatar
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    I just wanted to put the info out there to see if there was any interest. This spring the plan is to add a rock racing section onto the Ott's course.
    EPARCCrawlers President

    2010 1.9 Inaugural Champion
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    2012 Club Champion 1.9, 2.2, Class 1, Class 2
    2013 Class 2 Scale Season Champion
    2014 East Coast G6 1.9 Driver of the Day


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    Sage member cjsmith4's Avatar
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    Quote Originally Posted by JSLICK View Post
    I just wanted to put the info out there to see if there was any interest. This spring the plan is to add a rock racing section onto the Ott's course.
    That sounds awesome! I am assuming they would make it as a turn off that they could just kind of divert the track so they could still run regular short course trucks and buggies on it too without having to go through the rocks?

  5. #5
    President JSLICK's Avatar
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    Quote Originally Posted by cjsmith4 View Post
    That sounds awesome! I am assuming they would make it as a turn off that they could just kind of divert the track so they could still run regular short course trucks and buggies on it too without having to go through the rocks?
    I am hoping for two sections off the main course.
    EPARCCrawlers President

    2010 1.9 Inaugural Champion
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    2013 Class 2 Scale Season Champion
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    Sage member marzzz23's Avatar
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    I didnt read the rules but isnt there also classes for scx10s and such? Plus i have a twin hammers now too with yeti elec in it, might be fun. Bring me back to my racing roots....i ahve raced pretty much every format ,mostly electric plus so e nitro
    GSRCRC Presidente-2007 GSRCRC 2.2 Champ, 2008 GSRCRC 2.2 2nd place
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    President JSLICK's Avatar
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    Ok I am now on tapatalk let me see how the picture posting goes


    Sent from my iPhone using Tapatalk
    EPARCCrawlers President

    2010 1.9 Inaugural Champion
    2011 Class 2 Scale Season Champion
    2012 Club Champion 1.9, 2.2, Class 1, Class 2
    2013 Class 2 Scale Season Champion
    2014 East Coast G6 1.9 Driver of the Day


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