Each can feel the slightest movement of the other, since vibrations are transmitted through the wheels' common axle.

Fixed conventional landing gear, with a straight common axle and a rear skid.

This is different from a motor tricycle (trike), where both rear wheels are powered and share a common axle.

Even 2-wheeled buggies exist-with only one single wheel at the back instead of the common 2-wheel rear axle.

The main units of the fixed undercarriage shared a common axle, and the tail was supported by a skid.

Initially this was by means of a pair of sprocket wheels on a common axle.

The twin wheels were joined by a common axle that was attached at their hubs like the head of a T to the center shaft.

Conventional fixed landing gear, with a common straight axle and a rear skid.

By a common axle, it empowered an electric generator.

They have heavy masses at the ends of the beams, and the whole assembly spun around the common axle at high speed.