The file vendor/three.min.js is missing. Re-download it from
https://unpkg.com/three@0.152.2/build/three.min.js and place it in the vendor/ folder.
| LEFT | RIGHT | CARRIER | SPIDER | |
|---|---|---|---|---|
| Straight ahead | 100 | 100 | 100 | 0 |
| Turning left | 70 | 130 | 100 | 42 |
| Hold left wheel | 0 | 200 | 100 | 140 |
carrier = (L + R) / 2 · spider = 1.4 × (R − L) / 2 — always
Drag orbit · scroll zoom · right-drag / shift-drag pan
Space play/pause · ← → chapters · E explore
In Explore: 1–5 pick an experiment · C ride the carrier · K weld/unweld · sliders drive the shaft and the turn.
The tour resumes camera control at each chapter; drag any time to look around.
Open bevel-gear differential: 13-tooth pinion / 39-tooth ring (3.00:1 final
drive), two 10-tooth spiders, two 14-tooth side gears. Every speed shown is solved from the
real constraint ωleft + ωright = 2 ωcarrier
(self-testing — run node js/kinematics.js). Click anywhere to close.