Direct Drive Torque Translator
This calculator turns a wheelbase's torque rating into the tangential force you actually feel at the rim. It is built for readers comparing 8 Nm, 12 Nm, 18 Nm, and 25 Nm classes and trying to understand how those numbers translate into hand load and mounting demands.
How to use it: enter peak torque, your wheel diameter, and the FFB cap you expect to run in software. The result shows effective torque at that cap, force at the rim in multiple units, and a practical rig-class recommendation. The physics here is straightforward: force at the rim is torque divided by wheel radius, while real-world feel still depends on game output, wheel shape, grip, filtering, and how aggressively you tune clipping.
Assumptions: the sustained-force estimate uses a user-adjustable sustained-output percentage because most wheelbases cannot hold peak torque indefinitely in every scenario. Use it as a planning number, not a dyno replacement.