3+ hour, 37+ min ago  (215+ words) The Perfect Cheat's Racing Bicycle'Hackaday One of the ongoing rumors and scandals in professional cycle sport concerns "motor doping" " the practice of concealing an electric motor in a bicycle to provide the rider with an unfair advantage It's investigated in…...

6+ day, 23+ hour ago  (531+ words) BMX bikes are a unique frame geometry, essentially forgoing all travel efficiency for maneuverability and sturdiness. For how much abuse these bikes are designed to take, these are all good tradeoffs.......

1+ mon, 1+ week ago  (217+ words) ike were an Estonian scooter company, which sadly went bust last year. [Rasmus Moorats] has one, and since the app and cloud service the scooter depends on have lost functionality, he decided to rev... ike were an Estonian scooter company,…...

1+ mon, 2+ week ago  (245+ words) The hardware is a fairly simple task to solve. A simple Raspberry Pi Pico setup is used to capture potentiometer data. By some simple LEGO linkage and mounts, this data is correlated to the bikes" wheel travel. Finally, everything is…...

1+ mon, 2+ week ago  (106+ words) Awesome! How does free wheeling work? (It says "fixed" gear on wheel'not sure if it's really "fixed".) The bicycle chain side is definitely not fixed, it looks like a standard single-speed freewheel. Why does the stator need to be rewired?...

1+ mon, 2+ week ago  (272+ words) The balance bikes toddlers are rocking these days look like great fun, but not so great in the snow. Rather than see his kid's favourite toy relegated to shed until spring, [John Boss] added electric ... The balance bikes toddlers are…...

1+ mon, 4+ week ago  (324+ words) Bicycle Tows 15,000 Pounds'Hackaday An old joke in physics is that of the "spherical cow, poking fun at some of the assumptions physicists make when tackling a new problem. Making the problem simple like this can help make its fundamentals easier…...

3+ mon, 6+ day ago  (323+ words) Hydrofoils are perhaps best known for their application on boring ferries and scary boats that go too fast. However, as [RCLifeOn] demonstrates, you can also use them to build fun "read more Hydrofoils are perhaps best known for their application…...

4+ mon, 2+ week ago  (227+ words) This liquid-cooled, horizontally opposed 12-cylinder two-stroke diesel engine featured a piston-ported design with shared crank pins in a fork and blade arrangement. Its two-stroke configuration vastly reduces pull loads on the conrods, allowing for lighter one-sided half bearings. The six-throw…...

4+ mon, 3+ week ago  (382+ words) Anyone who has ever snapped a chain or a crank knows how much torque a bicycle's power train has to absorb on a daily basis; it's really more than one "read more Anyone who has ever snapped a chain or…...