The $29.99 all-metal desktop Stirling engine kit is one of the simplest. It can be assembled in 15 minutes and is recommended for ages 14 and up. Also for $29.99 is the Exploring Kid Steam Engine Kit.

Harley-Davidson makes several popular trikes but there are other non-Harley three-wheeled options out there. Here are six of ...

The choice of the motor, therefore, depends on the need that the trike is going to be used for. For example, an incumbent bike used for commuting purposes will need a different motor arrangement ...

This list is in no particular order, and we will let you be the judge of which among this trike list is the most beautiful of ...

This cargo e-trike uses an ingenious rack system and a unique rounded frame to handle up to 130 lbs of cargo; in Japan, it ...

Of all the cargo e-trikes we've seen, the tall-framed, Japanese-designed Streek takes one of the most innovative approaches ...

Parking brakes and anti-tip wheels make stops easier and rides secure. The Tour is the first dual-motor electric trike, featuring dual 750W motors and 15Ah batteries for power and adaptability.

For years I’ve followed progress of the STREEK cargo trike, a fascinating-looking electric cargo carrier from Japan. This utility-focused ...

Although the kit is designed for kids who are 6 and up, parents of some younger, craft-adept kids may find it age-appropriate, too, and the repetitive knotting helps kids practice fine motor skills.