During integral alternator testing, Calder discovered a harmonic vibration phenomenon that could break automotive timing belts (used in the system for durability) in just 4 minutes, a failure mode unique to his specific boat at certain engine speeds and with particular resonant features.

factualpending

Speaker

Nigel Calder

Evidence Quote

i could create something called a harmonic vibration and i could break a belt in four minutes... nobody else could do it it was it was unique to our boat and certain speeds and and resonant features

Source

Lithium Batteries for Your Boat with Nigel CalderPacific Yacht Systems
Created: 8/13/2026, 9:56:33 AM

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