Hello everyone,
I am issuing an open Kinematic & Mechanical Challenge to the global community of machinists, engineers, and physicists here at GOSH.
I have designed a mechanism that challenges standard textbook assumptions regarding mechanical dead centers and continuous torque asymmetry. Rather than debating the theory, I am releasing the complete workshop blueprints today under an open-source license so the community can audit, replicate, and test the geometry itself.
Below are the technical specifications, project parameters, and secure direct download links for the workshop notebooks (available in English, French, and Spanish). Let’s review the blueprints and discuss!
Essential Prerequisite: Kinematics vs. Thermodynamics
To prevent generic and irrelevant objections: this project is strictly positioned within the parameters of KINEMATICS and SOLID-BODY STATICS.
Historical eccentric or gravity wheels failed in practice because their symmetrical internal paths systematically generated a net torque of exactly 0 Nm at the hub, causing them to stall under friction. The CMTS architecture addresses this specific geometric deadlock, evaluating the raw physical torque profiles at the 3 o’clock and 9 o’clock coordinates. It is an exploration of asymmetric lever arm geometry, not a thermal conversion process.
The Kinematic Challenge: Breaking the 6 and 12 O’Clock Dead Center
The Circular Mass Transfer System (CMTS) — Système de Transfert Circulaire de Masse (STCM) — is an open mechanical technology designed in Montreal, Canada.
The core objective is to generate a continuous asymmetrical torque in a central hub using moving masses governed by a strict orbital constraint principle along perfect eccentric trajectories. By utilizing these dual offset paths, the geometry is specifically engineered to bypass the classic gravitational dead center encountered at the 6 o’clock and 12 o’clock positions.
The raw geometry of these workshop prints is designed to showcase this feasibility. The challenge is now in your hands: look at the tracé d’atelier, audit the constraints, and verify the path.
Workshop Technical Specifications
To prevent structural deflection and ensure operational rigidity, the layout requires tight machining tolerances and rigid components:
- Initial Action Radius: 7.0 cm (extensible up to 12.0 cm for scaling).
- Distance Between Masses (Drawing No. 6): 6.5 cm center-to-center (3.25 cm rigid pivot arms).
- Dynamic Guidance Displacement (Drawing No. 7): 4.2 cm center-to-center (two 2.1 cm sections).
- Shaft Architecture: Double independent central axis arrangement side-by-side (Profile, front, and top views).
- Kinematic Linkage: Toothed sprockets connected by a synchronous chain or belt to physically lock the geometric path.
- Materials: Rigid machined steel is mandatory. Acrylic, plexiglass, or flexible plastics are strictly prohibited (as they flex under load and seize the central hub).
Legal Status & License
- Public Domain Donation: Sworn affidavit signed in February 2026 before Commissioner Robert Asselin (Seal No. 202 319) in Montreal, Quebec, permanently securing authorship under the original project name “Circular Crane”.
- License: Creative Commons Attribution-NonCommercial-ShareAlike (CC BY-NC-SA 4.0).
DIRECT DOWNLOAD LINKS & OFFICIAL REGISTRIES
Digital Library (Internet Archive - PDF Manuals):
French Version (Original & Recommended): stcm-systeme-defi-cinematique-benoit-collin.pdf : Benoit Collin : Free Download, Borrow, and Streaming : Internet Archive
English Version: stcm-system-kinematic-challenge-benoit-collin.pdf : Benoit Collin : Free Download, Borrow, and Streaming : Internet Archive
Spanish Version: stcm-sistema-desafio-cinematico-benoit-collin.pdf : Benoit Collin : Free Download, Borrow, and Streaming : Internet Archive
Open-Source Forges & Workshop Source Files:
- GitHub Repository: BenoitCollin · GitHub
- Codeberg Repository: BenoitCollin/circular-mass-transfer-system-cmts: Official engineering blueprints and workshop manuals for the Circular Mass Transfer System (CMTS). Designed in Montreal, Canada, to evaluate torque profiles and dead-center management. Released into the public domain (CC BY-NC-SA 4.0). - Codeberg.org
How to Participate in the Challenge
- The Blueprint Audit: Download the technical notebooks and mathematically verify the 2.1 cm pivoting offset and the 4.2 cm center-to-center guidance displacement against the rigid arms.
- Prototyping & Workshop Testing: For members with an active lathe, mill, or CNC in their workshop, the tolerances are fully optimized for direct machine bed testing. Grab your rulers, machine the components in high-rigidity steel, and verify the physical path.
Feel free to post your mathematical critiques, workshop photos, or physical testing results directly in this thread, or reach out privately for technical validation and collaborative engineering at: Benoitcc58@proton.me
AVERTISSEMENT IMPORTANT : Problème d’affichage technique sur les documents (