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Why Structural Steel Frames Behave Differently Than Aluminum Extrusions (IFR Explained)

Understanding Immersive Frame Resonance in modern sim racing chassis When we began developing our HSS steel rig, we expected rigidity, strength, and predictable load paths. What we didn’t expect was how alive the frame would feel under force feedback. Steel doesn’t just hold the structure together — it carries the entire sensory footprint of the …

3R‑2 Technical Overview — Engineering Notes From Development

The 3R‑2 is the latest iteration of our welded‑steel sim racing chassis, built around one priority: structural certainty under real racing loads. Instead of relying on modular joints or friction‑based connections, the 3R‑2 uses a unified, triangulated steel structure to eliminate the micro‑flex that shows up when you push modern hardware to its limits. During …

3R‑2 Development Update: Reaching the Production Prototype Stage

Hello everyone — and thank you to those who’ve been following along. Your support genuinely means a lot. A little while ago, we shared an update about the transition from the 3R‑1 to our next platform, the 3R‑2. Today’s post is the next step in that journey. We’ve officially reached our Production Prototype Candidate. Functionally, …

Evolving the Platform: From 3R‑1 to the 3R‑2

Prototyping is never a straight line. Things change, get refined, get rebuilt, and sometimes get rebuilt again. The goal is always the same: create a system that performs exactly as intended. The 3R‑1 has proven itself to be a sturdy, reliable platform, but during our efforts to reduce shipping costs, we introduced a design change …

Meet the 3R‑1: Built With Rigidity At Its Core

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 …

Why Structural Steel Frames Behave Differently Than Aluminum Extrusions (IFR Explained)

by 3R Simworks TeamComparisons & Analysis 20 February 202620 February 2026Comments are Disabled