This diagram from Vehicle Dynamics In A Nutshell shows the Tangential Force (Ft) acting on a gear tooth. But Ft isn’t the only force at play! ⚙️ Ft is the easiest to calculate → Ft = Torque / Pitch Circle Radius ⚙️ Once we know Ft, we can determine: 🔹 Normal Force (Fn, along the line of contact) 🔹 Radial Force (Fr, which pushes gears apart & bends the shaft) Some theories (like Lewis’ theory) focus only on Ft, while others compare the normal and tangential forces to decide which governs gear design. However, Fr is crucial for shaft design because it affects bearing loads & deflection. I’ve kept this simple because my goal is to make gearbox design easier, without diving into complex derivations covered in the subject of Machine Design. 🚀 Want to learn how to design a gearbox step by step? Then read Vehicle Dynamics In A Nutshell 📖 Click on this link to get your book right now: https://amzn.to/41fyMKe
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