Pedal-powered Crane

This pedal-powered crane was built for Redmoon's Summer 2006 spectacle Twilight Orchard. A simple rule for a crane is that the weight on the end times the ratio of the boom to the counterweight's length equals the weight of the counterweight. The original design called for an 800 lb. counterweight which would support 50 lbs at the end of a 16 foot boom. Consequently this vehicle was extremely overbuilt, with ATV wheels, a differential, and a gear ratio that would allow a single person to move that kind of weight.


I had to fabricate my own axle stub brackets.


The vehicle was dressed by other designers and audio techs, and Laura Annis built the boom. The crane was equipped with a speaker on the end for a private party and then used to hang a disco ball for Twilight Orchard- in typical Redmoon style this allows the techs to be seen by the audience and perform their job with whimsical gadgetry. Here's a picture of it loading a mouse into a giant mouse wheel during Looptopia 2007:


This project represents a particular combination of form and function that I always strive for and am quite proud of in this creation.