Front plate
front_plateThe face of the wheel: it carries the buttons, the screen and the row of shift lights. Several front plates are available, and they swap without touching the rest.
MaterialPLA
2025
SIM Race PRO
It started from a Formula 1 fan who found real simulators too expensive and the cheap ones lifeless. The PRO is built around one word, modular: the same files make a BUDGET rig with no force feedback, a MEDIUM one, or the FULL one with a DC motor in the base, and you move up later by printing only the parts that change. Funded on MakerWorld in 24 hours, the campaign closed in October 2025 with 752 backers and every stretch goal unlocked.
FilesSold as files: until the shop on this site opens, they are on Patreon. They include the bill of materials, the wiring diagrams, the PCB files and the extra modules; assembly needs basic soldering, with tutorials on YouTube.
Get the files on Patreonpatreon.com ↗3builds: budget, medium, full
752backers on MakerWorld
23×the goal, funded in a day
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Components
Every printed part, with its function and print settings.
Grip, front shell
front_left_handle ×2The front half of each grip, the part under the thumbs.
MaterialPLA
Grip, back shell
back_left_handle ×2The back half of each grip, where the fingers wrap around.
MaterialPLA
Grip mount
left_handler ×2Joins each grip to the body of the wheel.
MaterialPLA
Electronics support
controller_supportInside the wheel, behind the front plate: it holds the wheel electronics.
MaterialPLA
Wheel hub
wheel_attachmentThe hub at the back of the wheel, where it locks onto the shaft of the box.
MaterialPLA
Button
button ×4The large printed buttons around the screen.
MaterialPLA
Button cap
button_cap ×10The coloured caps of the round buttons on the front plate.
MaterialPLA
Button spacer
printinplace_btn_spacerKeeps the buttons at the right distance from the plate; it is printed in one piece, already assembled.
MaterialPLA
Screen
oled_displayThe small OLED in the middle of the wheel.
ModelOLED display
Shift paddle
left_shift ×2The two shift paddles behind the grips.
MaterialPLA
Paddle mount
shift_attachment ×2Hinges each paddle to the back of the wheel.
MaterialPLA
Paddle magnet bracket
shift_magnet_bracket_left ×2Holds the magnet that brings the paddle back after each shift.
MaterialPLA
Box body
box_bodyThe body of the box: in the FULL build it houses the DC motor, its controller, the rotation sensor and the fan.
MaterialPLA
Box front cover
box_front_coverCloses the box on the wheel side, around the shaft.
MaterialPLA
Box back cover
box_back_coverCloses the box at the back, with the fan grille and the connectors.
MaterialPLA
Box top cover
box_upper_coverThe top of the box, with the SIM Race Box PRO name and the vents.
MaterialPLA
Box side cover
box_side_cover ×2The two sides of the box, with the air vents.
MaterialPLA
Back panel
back_boxThe back panel of the box.
MaterialPLA
Wheel shaft
wheel_sim_attachmentThe shaft that comes out of the box and carries the wheel: it is what the motor turns.
MaterialPLA
Pedal base plate
pedals_baseThe plate the pedals are screwed to, with the SIM Race Pedals PRO name.
MaterialPLA
Base extension
pedals_base_additionalExtends the base for the third pedal.
MaterialPLA
Base cover
pedals_base_coverCovers the electronics of the pedals and carries the connector to the box.
MaterialPLA
Feet
pedals_feetThe feet under the base, so the pedals do not slide on the floor.
MaterialTPU
Pedal hinge
pedal_base ×3The hinge of each pedal, screwed to the base.
MaterialPLA
Pedal
pedal_body ×3The pedal arm, with the plate you press. The pedals can be two or three: throttle, brake and clutch.
MaterialPLA
Pedal support
pedal_support ×3The bracket that holds the bottom of the piston.
MaterialPLA
Pedal axle
pedal_axis ×3The axle each pedal turns on.
MaterialPLA
Piston body
pedals_piston_body ×3The body of the piston that gives each pedal its resistance.
MaterialPLA
Piston spring seat
pedals_piston_body_spring ×3The seat of the spring on the piston.
MaterialPLA
Piston stop
pedals_piston_blocker ×3Stops the piston at the end of its travel. An updated version, from October 2025, keeps it from coming off after long use.
MaterialPLA
Spring
pedals_spring ×3The spring on each piston: it pushes the pedal back.
ModelCompression spring
Vibration motor mount
pedals_vibration_std_motor_support ×2Holds the small motor of the pedal vibration system, which shakes the pedal on kerbs and when ABS kicks in.
MaterialPLA
Electronics
Budget, medium or full: same files, one motor apart.
Two Arduino Nano, one in the wheel and one in the base, talking over a serial link. The base is what changes between versions: BUDGET reads the wheel with a potentiometer and has no force feedback; FULL adds a DC motor with its controller, a high-resolution rotation sensor and a fan in the box, and clamps to the desk to take the load. The wheel carries the buttons, an OLED and shift lights; the pedals read three potentiometers and, since the pedal vibration stretch goal, drive small motors that shake on kerbs. The handbrake module is a spring and a button; the manual shifter is two crossed potentiometers, like a large joystick. A custom PCB for wheel and box, unlocked in the campaign, cuts the wiring time by more than half and fixes the pins once and for all.
Software
An Xbox controller with real force feedback.
To the PC the rig is a virtual Xbox 360 controller, so any game that takes a gamepad works. The force feedback started as a proportional spring; with the campaign it became telemetry-driven, and version 3.2 (August 2026, written by a backer and published on GitHub with the firmware) reads the game directly: centring force with adjustable angles and curve, lateral-G load, separate ABS and traction-control pulses, surface rumble on wheel and pedals — fifteen live parameters, no restart. Games are detected automatically, from Assetto Corsa and iRacing to F1, Forza, DiRT and BeamNG; the rest still get steering resistance and the gamepad. Two wizards learn the wiring and map the buttons, hardware profiles for the three builds live in the base's memory, and a wiring mistake is fixed in software rather than with the soldering iron. Windows only.
Video
The video loads from YouTube (Google) only when you press play. Watch it on YouTube ↗
SIM Race PRO: wheel assembly
The wheel put together step by step: the printed frame, the buttons and paddles, the OLED and the electronics inside, until it is ready to mount on the base.
