When we started designing the 3R‑1, we had one non‑negotiable goal: rigidity above everything else. Every decision — from material selection to geometry to how each plate interfaces with the next — was driven by that single principle. The result is a platform built from real structural steel, engineered for load‑bearing performance, and validated through the kind of testing that matters in the real world.
Structural Steel, Front to Back
The 3R‑1 isn’t made from decorative tubing or lightweight brackets. Its foundation is built from CSA G40.21 44W structural steel, the same material used in industrial fabrication.
- Wheel mount base, pedal base, and pivots are cut from 44W plate (44,000 psi yield strength).
- The main frame uses 44W HSS (hollow structural section), chosen for its stiffness and predictable load‑bearing behavior.
This isn’t “steel‑inspired.” It’s the real thing.
Engineered Mounting Systems
Every interface on the 3R‑1 is designed to support mainstream hardware without compromise.
Wheel Mount
A universal tilt plate supports all major wheel bases — including high‑torque direct‑drive units — with smooth, repeatable adjustability.
Steering Arm
The single‑arm steering column offers:
- telescopic in/out adjustment
- tilt adjustment for fine height control
It’s compact, rigid, and engineered to handle real forces.
Seat Mount
A universal tilt mount accommodates:
- automotive seats
- racing seats
- office chairs
If it bolts down, it fits.
Universal Pedal Plate
Compatible with all major pedal systems, with expansion options for more advanced configurations.
Optional Add‑Ons
For builders who want more flexibility, the 3R‑1 supports a range of optional features:
- adjustable shifter base (vertical + angular adjustment)
- heavy‑duty polyurethane casters (500 lb capacity)
- angle‑adjustable pedal mounts
- expansion‑ready plates for aluminum‑extrusion accessories
The platform grows with you.
Real‑World Validation
We don’t rely on assumptions — we test.
- Wheel mount: validated at 135+ Nm of torque
- Steering arm: stress‑tested to 100 lbs with 100% structural integrity
- Hardware: Grade 5 bolts paired with 44W plates eliminate vibration and distortion
If it flexes, we fix it. If it fails, we redesign it.
Practical by Design
The 3R‑1 is engineered for real homes, real rooms, and real setups.
- Welded base frame means no assembly headaches
- Small footprint: 56″ × 20″
- Weight: just under 80 lbs
- Easy to move in front of a TV or monitor
- Optional casters make storage effortless
It’s compact, rigid, and motion‑ready for future upgrades.
Challenge Accepted: The Single‑Arm Design
We know the single‑arm steering column raises eyebrows — it not the norm after all. That’s why it became the most heavily engineered part of the entire platform. We pushed it through every stress scenario we could think of, and it passed them all.
If you’re curious about torque, flex, portability, or expansion, ask away. We’re here to talk about the engineering behind every decision.
— The 3R Simworks Team
Main Community Links:
Reddit: https://reddit.com/r/3rsimworks
Instagram: https://instagram.com/3RSimworks