Cradle to Cradle Bike Blender Production 
How hard is it to pedal the Fender Blender?
Pedaling a smoothie on the Fender Blender feels like climbing a medium-difficulty hill on a bicycle. It's a steady effort but not a struggle. It takes about 45-60 seconds to blender a smoothie.
Can the Fender Blender be adjusted to different resistance levels?
The Fender Blender has only one gear. The way to make it easier or harder is to change what you put in your blender pitcher. For example, smaller ice cubes are easiers to crush than larger ones.