These devices involve high-torque motors and reciprocating parts. Without professional engineering and safety enclosures, there is a high risk of "binding," where parts jam and cause the motor to overheat or the frame to break. Furthermore, the rapid movement can cause intense vibrations, potentially leading the device to become unstable or cause physical injury if limbs or clothing are caught in the exposed mechanism.

Standard safety protocols involve shielding moving parts to prevent entanglement or injury during operation. DIY Mechanical Resources

Your standard clutch and flywheel might fit, but check your spline count first [15, 18]! Linkage Woes: