14.1M
ME0.0–1.0s: Launch preload—throttles snap open, props cavitate briefly while the hulls pitch up. Thrust lines sit high, creating a strong nose‑up moment.
1.0–2.0s: Cavitation clears → sudden thrust step. Drivetrains see a torque spike; transom enters bending + shear as four outboards load simultaneously.
2.0–3.5s: Structure can’t redistribute fast enough. Engine bracket bolts go into combined tension/peel, exceeding joint capacity. Watch the transom flex lag the thrust rise.
3.5–4.5s: Progressive joint failure—outer mounts unzip first. Two engines depart aft as stored elastic energy releases.
4.5–6.5s: Separated powerheads decelerate violently; remaining engines yaw the hull via asymmetric thrust. Prop wash collapses into turbulent wake.
6.5–10.0s: Hull settles; survivors limp as loads re‑balance. Root cause isn’t “power,” it’s thrust rise rate + joint design margin.
Engineer takeaway: ramp torque, spread load paths, or the transom becomes the fuse. It’s the MAGA bump bro!
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