A $190 four-stroke bicycle engine kit goes onto a Specialized Hard Rock for an installation review and first ride. The work includes evening out the rear sprocket’s rubber mounts, grinding an engine ...

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Support CleanTechnica's work through a Substack subscription or on Stripe. There is no shortage of bikes in the world, but as technology changes, so do our buying habits. Over the last year, the ...

The Swytch Bike electric conversion kit is a great and relatively simple way to turn your bicycle into an e-bike, even if you're not used to bike maintenance. The appeal of the electric bike is to ...

The OneMotor Shareroller system can mount to the front wheel or the back, which is how I attached it to my bicycle. Ebikes aren’t cheap, and many riders are more than happy with their current bike, ...

I’ve seen and played around with a lot of DIY electric bicycle conversion kits. Hell, I even wrote the book on the subject. But the Swytch kit is something unlike any other conversion kit I’ve seen.

The Italian electric bicycle conversion kit company Bikee Bike has a new lightweight kit known as the Lightest. As the name implies, Bikee says this is the lightest weight e-bike kit on the market, ...

Over on his YouTube channel [Tom Stanton] shows us how to build a Stirling Engine for a bike. A Stirling Engine is a heat engine, powered by the expansion and contraction of a working fluid (such as ...

Do you like small-displacement machines but still like going fast? Do you like pushing your little bike to the edge? Well, then Nextar Consult, Inc. (NCI) has something for you. It’s a supercharger ...