Planetmountain.com is a site about climbing, mountaineering, trekking, via ferrata, freeriding, ski mountaineering, snowboarding, snowshoeing, and ice climbing on all the mountains of the world. It ...

[Scott Swaaley] needed a bunch of timing pulleys for the clock he was building. He had already decided on the MXL profile, but he needed so many of these toothed pulleys in so many configurations ...

The case of Philip C. Pulley, a 62-year-old man from Huntington Valley, Pennsylvania, highlights the seriousness of such ...

You wouldn’t think so to look at it, but the carabiner clip – as in, those chunky metal loops that rock climbers use – has a long and storied history. This humble oval-shaped key ring, which makes a ...

The hottest accessory for lesbians is the trusty carabiner, a functional yet fashionable outfit edition. But why do lesbians wear carabiners? Let’s dive right in. Carabiners are used by climbers ...

Timing pulleys that are designed with an millimeter-based pitch designation. Timing pulleys mate with same-pitch timing belts in synchronous drives. Timing pulleys are used in power transmission ...

V-belt pulleys (also called vee belt sheaves) are devices which transmit power between axles by the use of a v-belt, a mechanical linkage with a trapezoidal cross-section. Together these devices offer ...

Compact, ultralight and easy to handle, it offers three different modes of operation: ascender, pulley or progress-capture hauling pulley. The new design - with different colours of the side plates - ...

It’s easier when two people share the lifting of heavy objects and pulleys work in the same way. When you pull the rope, the pulley helps you lift heavy objects more easily because it spreads ...