twist-grip

Built like a tank, the 37 has removable brush guards, heavy-duty tilt and grab bar, hydraulic marine power tilt and trim, and twist-grip throttle.

They usually had a twist-grip throttle, a simple cable-activated brake and a seat designed for one person.

Equipped with shiny handlebars, a twist-grip throttle and two brake levers, the Rio Mobility Firefly is a hand cycle that turns standard manual wheelchairs into motorized trikes.

This included: the unpatented invention in 1953 aged 15 of the pedal bike twist-grip gear change 10 years before anyone else; his three years of National Service, the first two in the RAF police; and his many years working in his father's butcher's business.

It's an electric vehicle and to start it you simply turn the right-hand twist-grip, and off you go.

Complete with a twist-grip directional lever and a 360 degree rotational base, panning up, down, left or right is quick and easy.

Engine and vehicle speed is controlled by a motorcycle-style, twist-grip, throttle control.

He tinkered on a number of advancements including the handlebar twist-grip throttle control and a triple-cylinder engine designated the W-3, essentially a V-twin with a third cylinder.

Yamaha has done away with any direct connection between twist-grip and fuel injectors.

The twist grip gear change of the Grifter was also light years ahead of the Chopper's inferior stick shift (it was interesting to note that the new-look Chopper will dispense of its so-called 'revolutionary' stick shift in favour of the Grifter-like twist-grip).

The twist-grip hand controls are left of the steering column.

The new Tippen had tiller steering, a depression brake and clutch, and twist-grip. Powered by a Mark 8E Villiers 197cc engine its gearing enabled the steepest of hills to be climbed.