The more drag between the pedals and the smart trainer, the slower the virtual rider will go for the same energy input.

The bracket to hold all this and the very large pulley on the wheel are all 3D printed in PLA-carbon fiber mix. When it’s assembled, it runs the bike from a small lithium ion pack. That’s not ...

The more pulley wheels you add to the mechanism ... ln the example below, the larger gear is twice as big as the smaller gear, with twice as many teeth. The smaller gear will rotate twice for ...

Rather than use a regular hammer, we used pulleys and a rope to lift and drop ... We took a heavy metal rod (a broken half shaft from a four-wheel drive vehicle) and used it to smash our rock ...

Danish artist Jeannette Ehlers has produced an ominous, rough-hewn, wooden wheel reminiscent of the human-powered pulleys ...

This method could be accomplished without the wheel pulley's or hundreds of men. Perhaps they even made a ravine filled with water to move the large stones using beasts of burden over (below ...

when he filled a large container with water and fixed a paddle wheel inside it. The wheel was held in place by an axle with a string around it and then looped over a pulley and attached to a ...

R: The black ducts behind the front wheels are functional extractors ... This, and a 51/49 percent front/rear weight ...

A car engine belt that's squealing or chirping indicates a problem that needs to be fixed. The post If Your Car’s Belts Are ...

Slide the drive wheel over the shaft ... Then trace and cut a large notch out of the underside to fit the pulleys and the ...