A bicycle crankset that can power multiple tools such as a blender, a drill press, a sewing machine or even an electric generator.
This crankset has been installed on the Nomade des Mers laboratory sailboat for 4 years. Initially designed and installed by Olivier Guy, techno professor in Normandy, it was modified during the boat's stopovers around the world. It currently powers several tools: a blender, a grain mill, a sewing machine, an electric generator to recharge batteries and power a Peltier refrigerator, as well as a drill press that serves as a drill, grinder, sander and lathe.
The purpose of this machine is threefold:
• Uses mechanical rather than electrical energy: in the boat the supply of solar panel energy is precious. We could not have all of these machines powered by on-board batteries. We can therefore be more autonomous without needing to increase our electric storage capacity.
• Allows one to exercise in a useful and enjoyable way.
• Easily repairable and upgradeable: the special feature of this crankset is that it is multifunctional; you can connect an infinite number of tools to it.This tutorial describes the manufacturing of the multifunctional crankset's base, but doesn't precisely describe how to connect each tool (each is adapted according to the desired tools and available material).
• Bike with derailleur gears
• Belts of different sizes (to be measured depending on your mounting. They can be found in lawnmowers, or in garages)
• Fasteners, eye straps and metal corner braces
• Wood (battens, plywood, pallet boards)
• Pulleys around 60mm in diameter (can be found in hardware stores)
• Wood saw
• Flat wrenches
D’innombrables outils peuvent être entraînés par le pédalier. Voici ceux que nous utilisons actuellement :
Suivant les outils, plusieurs types de raccordement sont possibles :