BMS Eastern Dirt Modifieds – EDM

CHASSIS

• 2wd Truck Based Chassis (Stadium Truck)
• No offset or oval chassis allowed
• You cannot add or extend the chassis tub or plate to the left to move components and electronics to the left.
• No altering of the chassis are allowed
• Good Truck Chassis platforms are Team Associated T5M, T4.3, Traxxas Rustler, Losi 22T or other Stadium Trucks

Skip Kressley #51

SHOCKS & SUSPENSION

• Independent
• Aftermarket shocks and springs allowed.
• You can run shorter springs and spring spacers.
• Must only have (1) shock and spring per wheel assembly.

TRANSMISSION & MOTOR LOCATION

• Motor may be mid or rear engine only if original manufacturer designed it to be changed.
• Single Speed Transmissions only.
• May run steel or aluminum idler gears to strengthen transmission
• May run gear or ball diff transmissions

MOTOR & ESC

• Any 1/10th Scale Motor / 540 Size Motor Max Any Turn (Brushless  & Sensored Allowed)
• ESC is open, may run in any mode.

BATTERIES

• 7.4V / 2S Lipos (8.42V Maximum).
• Battery must be mounted down the center of the chassis or in OEM location.
• No offsetting battery to left side unless it came from the factory in that position.
• Electronics can be mounted on the left within main chassis plate only.

BODY STYLE

• Eastern Dirt Modified Body Only – Not IMCA, USMTS style bodies.
• May run rear spoiler but not to exceed 2” in height from rear deck.
• No wings or other air deflection devices.
• Front bumper cannot be used as an air device (May Not Exceed 6.75″ in Width). The RPM bumper for most models is allowed.
• An additional front body panel is allowed on the front of the car but may not extend forward of the front bumper.
• Front and rear windows must be removed and any clear portion is included in max roof length dimension.
• Side windows and A pillars must attach to side panels at top edge of door and must also contact entire length of roof (i.e. no large gaps between roof and top of windows, no T-tops).
• Roof width must be at least .500″ narrower than inner panel max width dimension.
• No portions of side window may overlap side or sail panel.
• Side window material may be removed but A pillar must still remain in tact from front of door to front of Roof
• Roof, windows, side and sail panels must be symmetrical. Front edge of Door/side panel may not extend past the centerline of the front axle with wheels straight.
• Front of sail panel may be no more than 1″ forward of rear tire leading edge and can not overlap side windows.
• No additional lips or flaps are allowed with the exception of a .250″ bend at top and bottom of side and sail panel
• Body braces are allowed but may not be attached in a way that works as an air device only.
• No rear wheel cutouts are allowed on the horizontal plane of the inner panel..
• Maximum Body Length: 22.000″
• Maximum Width of Inner Panel: 8.000″
• Minimum hood width: 2.000″
• Minimum hood height: .750″
• Maximum front bumper width: 6.750″
• Front body panel max width: 4.500″
• Front body panel max chord length: 3.500″
• Max roof width: 7.000″
• Minimum roof height: 5.000 from bottom of chassis
• Maximum height of body at highest point: 7.000″ from bottom of chassis
• Maximum roof length: 6.500″ plus additional .500″ rear spoiler allowed on roof
• Maximum side panel length: 17.000″
• Inner panel and spoiler can not extend beyond rear of side panels.
• Outer front edge of inner panel can not extend beyond the front of the door but may taper from that point forward of the door toward the hood at a point no more then 1.5″ forward of the door.
• Inner panel must be flat (on 1 plane) from spoiler base to a point within 1.5″ from front of door.
• Inner panel must have scale appearing hood that extends from at least the door leading edge to at least the leading edge of the roof.
• Hood must be centered on inner panel.
• Hood Width: Minimum 2.5″
• Minimum hood height for entire length is: .750″
• Clearance between top of hood and leading edge of roof is min. 1.0″ and max 2.0″
• May run rear spoiler but not to exceed 2” in height from rear deck.
• Rear spoiler: max chord is 3.125″ from body deck including any wicker-bill.

TIRES & WHEELS

• Rubber Tires Only
• Stadium Truck Style Wheels Only (No Short Course Or Buggy Wheels)
• No Foams Tires Allowed
• Any 1/10th Stadium Truck Tire Allowed (Front & Rear)
• No grooving or sipping of the rubber tires
• No large lug off road truck tires allowed

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Revised May 19th, 2020