Driveshaft Critical Whip RPM & U-Joint Equal-Opposite Pinion Angle Vibration Solver

Deterministic Cardan joint non-constant angular velocity kinematics (beta_1 = beta_2 <= 3 deg cancellation) + Euler-Bernoulli rotating shaft critical whip speed engine (.json, .pdf, .svg) built for Spicer Dana, QA1 Carbon Driveshafts, Tom Wood's Custom, Tremec — zero-upload ephemeral Wasm RAM execution.