A pedal powered blender for making smoothies at festivals and events had always seemed like a great idea. It brings in a number of concepts: firstly there is the ‘we don’t need electricity for everything’ idea, secondly it helps to demonstrate the concept of power in an interesting way, thirdly it helps to promote cycling and things pedal related and lastly it helps to get people to eat more fresh fruit.
There are a number of pedal powered blender designs available:
1 An amazing book for human powered devices, which includes a pedal powered blender plan, is 'The Human Powered Home' by Tamara Dean and published by NSP.
2 A nice Instructables plan is available here
, but probably loads more on instrucables....
3 A nice, commercial pedal powered blender is available from Fender Blenders, based in the US.
RE-Innovation decided to build their own. This design uses a flexible power drive to separate the blender from the bike to remove vibrations. The flexible drive can also be used for other applications, like pedal powered drilling.
Here are construction details for building our pedal powered blender:DISCLAIMER: These instructions are given as a guide for the competent pedal power enthusiast. The authors do not take any responsibility for any injury or damaged tools which may occur. Please stay safe when using power. Consult a qualified person if you are unsure at any stage. You are responsible for your own safety.