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Northern Illinois Mini RC rules

2500kv 10T Hardbody Rules

v1
Class Rules2500kv 10T HardbodyEffective Aug 16, 2026· Updated 3 months ago

Summary of recent changes

Published from nimrc.club/classes.

Spec sheet

Governing
Notes
No gyros; original headlight covers required
Motor & ESC
Motor type
Open
Spec motor
Any 2500Kv (max 2800Kv, 15mm can)
ESC
Blinky
Blinky mode
zero_blinky
Battery & power
Battery chemistry
LiPo
Cells
2S
Max voltage
8.40V
Tires
Spec tire
Any 1/28 production, max 25.5mm
Tire additive
Banned
Weight & body
Min weight
160 g
Body
Molded hard-shell, max 180x83mm
Chassis & Suspension
Chassis
Kyosho MR03 RWD / various 1/28; WB 98 or 102mm

1.Chassis

Kyosho MR03S/MR03S2/MR03 RWD, Jomurema, GL Racing GLR series, MRC MRC01, PN PNR2.5W/PNR3.0, RTRC RTA, Atomic MRZ/MRX/MRV/RX28 series, NEXX Skyline/Specter, MWX R.1, G-Force Lightning, XBility XB1, or AE RC28 (NIMRC exception: publicly available 3D-printed chassis permitted). Wheelbase 98 or 102mm only.

2.Motor

Any 2500Kv motor, sensored or sensorless — max 15mm can diameter, max 2800Kv. No aftermarket rotors or modifications.

3.Gearing

Any pinion/spur — tooth counts must be marked/colored for inspection; all gears pre-event teched and painted. Standard 12T pinion / 53T spur unless specified.

4.Wheels & tires

Any 1/28 production wheels — front max 8.5mm, rear max 11mm, diameter 19–20mm. Tires max 25.5mm mounted. NO traction compound, homemade tires, foam, silicone, urethane, ethyl carbamate, or inserts. Tire warmers allowed.

5.Batteries

2-cell LiPo or paralleled 1-cells, 8.4V max. One additional battery for the transponder.

6.ESC / receiver

Any manufacturer; must show a visible blinking LED in blinky mode. Receivers with built-in gyro, or separate gyros, prohibited.

7.Body

Any molded hard-shell body fitting the wheelbase — lexan allowed. Max 180mm × 83mm; original headlight covers required.

8.Option parts & weight

Any aftermarket or publicly available 3D-printed parts allowed; tungsten/brass weight additions permitted. Prototype parts prohibited — parts must be publicly announced 45 days prior, nationally purchasable 45 days prior, and 3D files shared before the event. Minimum weight 160 g race-ready.

Version history

v1Published.
Aug 16, 2026