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Archive for impact testing

Designing a Log Strike Test Stand to Verify Durability of Outboard Motor Prototypes

We have previously written extensively on log strike testing, the variables involved, and more specifically on trying to prevent outboard motors from breaking off and entering boats after striking floating or submerged objects. This installment focuses purely on durability testing of prototype outboards. It does NOT address the issue of outboard motors breaking off and […]

Virginia Tech drone impact tests: dejavu boat propeller guard tests

Virginia Tech researchers have been studying ways to make drones safer, including simulating drones crashing into humans. Drones share air space with humans, just like boats share water space with humans. Virginia Tech released the video above on YouTube 6 January 2017. While recreational drones crashing into humans is relatively recent event, boats have been […]

Outboard Motor Log Strike Mode by Speed and Resistance to Impact Chart

When outboard motors strike submerged objects they can break off and flip into the boat as seen in our lists of outboard motors breaking off and flipping into boats and large outboard motors breaking off and flipping into bass boats. We previously posted information on several existing and proposed solutions, including The Leash, a vectran […]

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 […]