Ural-Alp Big Hauler

Closed for Use

Open for Rigging

Technical details

I acquired my Big Hauler from Ural Sport in 2004. The Ural-Alp Big Hauler is 126 mm tall, 132 mm wide, and 43 mm thick. Mine weighs 541 g.

The Big Hauler follows a standard rescue pulley pattern with the addition of an ascender-style cam to the side. The front and rear plates are painted 4.5 mm metal, perhaps aluminum. Each plate has a 25 mm drilled eye. The front plate pivots on the pulley axle to allow rigging.

The pulley has a 15 mm wide U-shaped groove with a 45 mm minimum diameter. It pivots on a 10 mm steel bolt. There appears to be a nylon bushing between the pulley and the front plate. I did not disassemble my big hauler to examine the bearing.

The cam is an investment-cast eccentric cam with downward-sloping teeth in an irregular 2.1.2..3.2.2.1.2.2.3.2.1.2 pattern. The cam pivots on a 7.5 mm steel bolt and a nylon bushing. A spring forces the cam against the pulley. A small cam stop prevents opening the cam far enough to damage the spring.A spring-loaded catch allows one to lock the cam in the open position by opening the cam and depressing the catch button so that the other end projects from the back of the cam and catches against the rear plate.

The front plate is stamped with "RUSSIA," "URAL-ALP," and "45 KN" under the pulley axle. The rear plate is stamped "40 KN" under the cam axle.

Comments

The Big Hauler is a solid pulley. I find it large for my personal needs, but as group gear, it has its place.