You'd think that this $US78 Jumbo Gear Clock sleeps alright knowing that, unlike its digital counterparts, it features 50 exposed moving gears that show off the otherwise hidden complexity of clockwork. But the Jumbo Gear Clock does not sleep well at all. The Jumbo Gear Clock lays awake at night because the Jumbo Gear Clock is a lying phony.

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Tesla Motors is finally rolling out its long-awaited single-speed transmission for the all-electric Tesla Roadster, which will pare down durability issues while upping torque and range. The new gearbox, made by transmission whiz kids Borg Warner, lets the Roadster hit its promised zero to 100 time of 4.0 seconds while upping travel distance to 392km per charge.

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Gear and derailleur mechanisms in high-end bikes are among the more impressive feats of engineering around, which makes bike madman Eric Hagerman's report in Wired on Shimano's new ultra high-end all-electric gear shifters pretty interesting. While other companies have dabbled in replacing rickety lever and cable shifters with all-electric mechanisms, Shimano has taken the tech much further than most. And while it may sound like bike-dude geekery at best, hearing the pros talk about the difference makes it sound like an amazing rig to try.

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Gear clocks are nothing new, but each new design offers a little something different. You can watch in awe as the gears turn and display the hour, minutes, and seconds. It is almost hypnotic. And the best part is that it costs $US20 —can you say cheap holiday gift? I sure can. [Product Page via GeekAlerts via BookofJoe]