gearbox

New York's Priority Bicycles is claiming a US first with the launch of the 600HXT hardtail trail bike. Not only does it ride out with a carbon belt and Pinion gearbox, but it features Pinion's electronic Smart.Shift technology.

For 11 years now, German company Pinion's sealed mid-mount gearbox has offered a tougher alternative to derailleurs. It's now been combined with a motor, resulting in a two-in-one ebike module called the Motor.Gearbox.Unit – or MGU for short.

Even though almost all new mountain bikes now have just one chainring and no front derailleur, it would still be nice to have all those other gear ratios again. The Binary Gear is designed to bring them back, without reintroducing a front derailleur.

Electric bicycles may require less pedaling effort than regular bikes, but … their riders still have to shift gears. Paris-based electric mobility company Valeo is out to change that, by combining a motor with an automatic gearbox.

The Pinion gearbox is a sealed gear-shifting mechanism that's located adjacent to a bike's bottom bracket. Not only will it not get gunked up like a derailleur, but it's also better protected against damage. Now, Cinq has introduced a system that allows it to be shifted more conventionally.

A successful test has seen Rolls-Royce claim the world record for the world's most powerful aerospace gearbox​ with its Power Gearbox. Capable of handling the power from around 400 regular family cars, it will form a key part of Rolls-Royce's next-generation UltraFan engine.

​Rolls-Royce has inched a step closer to putting its upcoming TurboFan into production, having successfully run the world's most powerful aerospace gearbox for the first time.

Having launched its i-shift dual-clutch gearbox in 2014, Volvo has now added crawler gears to the system in an attempt to broaden its appeal. Unsatisfied with a traditional launch, the company has shown off the transmission by pulling a 750-tonne load from standstill.

Shifting gears can be a hassle, which is why a growing number of bicycle manufacturers are outfitting their bikes with the NuVinci N360 continuously-variable hub transmission. Now, NuVinci has announced the lower-priced NuVinci N330, which is designed to bring the technology to less costly bikes.

While shifts between the sprockets on a bike's cassette are generally quite fast, going between the chainrings up front is definitely a slower, more awkward affair. In an effort to make things quicker and easier, Efneo has developed a 3-speed planetary gearbox to replace the front derailleur.