Archive for April 2012

Propeller Guard Test Protocol Draft: PGIC Public Comments

ABYC (American Boat and Yacht Council) and CED (CED Investigative Technologies) recently completed a draft of the Propeller Guard Test Protocol. We announced they requested public comment from interested parties by April 11, 2012 on our Propeller Guard Test Protocol Released by ABYC/CED for Public Comment page. We sent in our comments today (April 11, […]

Log Strike Testing Part 1: Log Strikes and Log Strike Systems

As outboard motors began to increase in horsepower, speeds went up, and striking submerged objects became more dangerous. Manufacturers designed systems to handle the loads created from striking logs or other submerged objects, and ways to test those systems. We (PGIC) cover log strike testing because the industry often uses log strike tests to evaluate […]

Log Strike Testing Part 2: A History of Log Strike Testing at Mercury Marine / Dry-land Impact Testing

A Discussion of the History of Log Strike Testing at Mercury (Kiekhaefer Corporation), Kiekhaefer Mercury, and Later at Mercury Marine, a Brunswick Company Please be sure to review Part 1 before reading this section. In Log Strike Testing Part 1: Log Strikes and Log Strike Systems we review what happens during a log strike and […]

Log Strike Testing – 1950’s Mercury Video

Log strike tests have long been used by Mercury to prove their outboards and stern drives could survive the impact of striking submerged logs and other floating or submerged obstacles. In the original log strike tests, Mercury’s test crew used concrete weights to position telephone poles horizontally in open water, then ran boats over them. […]