Dave Evans: Engineering Design
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Tube Guitar Amplifier Semi-Hollow Electric Guitar Strat Guitar Half-Case
Custom Road Bike Bike Headbadge Capo/Bottle Opener
Laser Level - RoboToolz Custom Guitar Pedalboard Outdoor Filter Redesign
Stirilng Enginer - Lucent Technologies Tool Design - Northrop Grumman Hydraulic Animatronics - Edge Innovations
Chocolate-Chip Cookies

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Linkage Guitar Capo / Bottle Opener

Built on an over-engineered mechanism, this capo comments on the blind application of technical thinking to simple devices. Clamping guitar strings has never been more preposterously complex or rock-solid.

Feature creep and robustness VS. usability and elegance: this is a statment of why I believe engineering must be informed by design.
Looks Complicated
The majority of capos are based on torsional springs or overcenter clamps.

Here squeezing the handles slides the spherical bearing down a track, moving the push rod through a journal bearing and compressing the linear spring between a fine adjustment wheel and the static handle.
Updated January 2010 - All Content © Dave Evans, All Rights Reserved.