Hauling Pulleys

In general, I don't collect caving, climbing and rescue pulleys, but I do have a collection of hauling pulleys, i.e., pulleys with built-in cams. These allow the user to reset for the next pull while the cam holds the load. There are two principle uses for hauling pulleys:

General Hauling: There are a number of situations in caving and climbing (especially big-wall climbing) where pulleys are used to haul packs and equipment. High strength is less of a concern than light weight. The Rock Exotica Wall Hauler, Ural-Alp and USHBA Hauler are designed for this purpose. The Kong Block Roll, Petzl Mini-Traxion, and USHBA Hogwauler are primarily for general hauling but are also rated for live loads. The CMI Single Micro Hauler is specifically designed for rescue but might work just as well as a wall hauler. If you don't have any of these handy, you might want to know the Garda Knot.
Rescue Hauling: Strength is more important when human life is supported, although I'd argue that a low failure probability is a more accurate criteria (the two are related, but not identical). Weight is not as much of a concern, nor is cost. The CMI Uplift, RSI Rescue Hauling Pulley, and SRT Rescuemates fit into this category. The CMI Micro Haulers are light-weight devices specifically designed for rescue.

When using pulleys in mechanical advantage systems, one should ensure that the mechanical advantage gained by the system does not allow one to apply forces that would damage any component of the system, especially a human body. I feel that too little attention is given to this.

In the ID field, I used a green background for pulleys that the manufacturer rated for human life, and red for those that were not so rated.

ID Device Description Acquired Weight Height Width Thickness Std. volume

822 CMI Double Micro Hauler Stamped Al frame /w steel cam, 2 Al pulleys, swinging side plates On Rope 1, 2005 243 150 53 61 485

832
CMI Single Micro Hauler

Stamped Al frame /w steel cam, Al pulley, swinging side plate On Rope 1, 2005 192 154 53 40 328

719 CMI Uplift Extruded Al frame /w steel cam, cam safety & cord, 2 Al pulleys, swinging side plates. John E. Weinel, Inc., 1999 1054 257 100 62 1593

885 Hall Steel, pulley, cam on lower arm lever Kurt Stone, 2008 405 189 86 29 475

720 Kong Block Roll Stamped Al side plates, Al pulley, attaches to modular ascender. Specs include ascender. Inner Mountain Outfitters, 1999 526 278 79 35 769

731 Petzl Mini-Traxion Stamped AL side plates, Al pulley, SS exxentric cam /w hold-open catch Inner Mountain Outfitters, 1999 173 60 86 34 174

758 Petzl Pro-Traxion Stamped Al side plates, Al pulley, SS eccentric cam Inner Mountain Outfitters, 2001 288 126 66 36 298

666 Rock Exotica Wall Hauler Stamped Al side plates, Al pulley, suspended stamped Al cam frame /w steel eccentric cam & hold-open pin.. Gendarme, 1991 236 153 66 51 515

691 RSI Rescue Hauling Pulley Extruded Al frame /w steel cam, cam safety, opening cable, safety/hold-open pin, 2 Al pulleys, swinging side plates John E. Weinel, Inc., 1995 725 227 78 78 1381

642 SRT RM2 Rescuemate Extruded Al frame /w steel cam, cam safety & cord, Al pulley, swinging side plate. Inner Mountain Outfitters, 1994 695 254 80 40 813

643 SRT RM22 Rescuemate Extruded Al frame /w steel cam, cam safety & cord, 2 Al pulleys, swinging side plates. Inner Mountain Outfitters, 1994 902 254 80 63 1280

796 Ural-Alp Big Hauler 34.06 Painted side plates, Al pulley, toothed steel eccentric cam Ural Sport, 2004 541 126 132 43 712

797 Ural-Alp Double-Hauler Engine-ruled Ti side plates, 2 pulleys, eccentric cam Ural Sport, 2004 173 104 70 40 288

644 Ural-Alp Hauler, Version A Stamped Ti side plates, Al pulley, Ti cam, hold-open pin John E. Weinel, Inc., 1994 115 88 67 29 171

732 Ural-Alp Hauler, Version B Stamped Ti side plates, Brass pulley, Ti cam, hold-open pin USHBA, 2000 116 87 67 29 170

733 USHBA Hauler Stamped Ti side plates, Al pulley, Ti cam, hold-open pin USHBA, 2000 120 78 74 30 175

734 USHBA Hogwauler Prototype #2 Stamped Ti side plates, Al pulley on spring-loaded type-1 locking lever Ti cam, 139 mm release lever USHBA, 2000 327 133 82 34 376

735 USHBA Hogwauler Stamped Ti side plates, Al pulley on spring-loaded type-1 locking lever Ti cam, hold-open pin USHBA, 2000 293 165 88 34 494

ID	Device	Description	Acquired	Weight	Height	Width	Thickness	Std. volume
822	CMI Double Micro Hauler	Stamped Al frame /w steel cam, 2 Al pulleys, swinging side plates	On Rope 1, 2005	243	150	53	61	485
832	CMI Single Micro Hauler	Stamped Al frame /w steel cam, Al pulley, swinging side plate	On Rope 1, 2005	192	154	53	40	328
719	CMI Uplift	Extruded Al frame /w steel cam, cam safety & cord, 2 Al pulleys, swinging side plates.	John E. Weinel, Inc., 1999	1054	257	100	62	1593
885	Hall	Steel, pulley, cam on lower arm lever	Kurt Stone, 2008	405	189	86	29	475
720	Kong Block Roll	Stamped Al side plates, Al pulley, attaches to modular ascender. Specs include ascender.	Inner Mountain Outfitters, 1999	526	278	79	35	769
731	Petzl Mini-Traxion	Stamped AL side plates, Al pulley, SS exxentric cam /w hold-open catch	Inner Mountain Outfitters, 1999	173	60	86	34	174
758	Petzl Pro-Traxion	Stamped Al side plates, Al pulley, SS eccentric cam	Inner Mountain Outfitters, 2001	288	126	66	36	298
666	Rock Exotica Wall Hauler	Stamped Al side plates, Al pulley, suspended stamped Al cam frame /w steel eccentric cam & hold-open pin..	Gendarme, 1991	236	153	66	51	515
691	RSI Rescue Hauling Pulley	Extruded Al frame /w steel cam, cam safety, opening cable, safety/hold-open pin, 2 Al pulleys, swinging side plates	John E. Weinel, Inc., 1995	725	227	78	78	1381
642	SRT RM2 Rescuemate	Extruded Al frame /w steel cam, cam safety & cord, Al pulley, swinging side plate.	Inner Mountain Outfitters, 1994	695	254	80	40	813
643	SRT RM22 Rescuemate	Extruded Al frame /w steel cam, cam safety & cord, 2 Al pulleys, swinging side plates.	Inner Mountain Outfitters, 1994	902	254	80	63	1280
796	Ural-Alp Big Hauler 34.06	Painted side plates, Al pulley, toothed steel eccentric cam	Ural Sport, 2004	541	126	132	43	712
797	Ural-Alp Double-Hauler	Engine-ruled Ti side plates, 2 pulleys, eccentric cam	Ural Sport, 2004	173	104	70	40	288
644	Ural-Alp Hauler, Version A	Stamped Ti side plates, Al pulley, Ti cam, hold-open pin	John E. Weinel, Inc., 1994	115	88	67	29	171
732	Ural-Alp Hauler, Version B	Stamped Ti side plates, Brass pulley, Ti cam, hold-open pin	USHBA, 2000	116	87	67	29	170
733	USHBA Hauler	Stamped Ti side plates, Al pulley, Ti cam, hold-open pin	USHBA, 2000	120	78	74	30	175
734	USHBA Hogwauler Prototype #2	Stamped Ti side plates, Al pulley on spring-loaded type-1 locking lever Ti cam, 139 mm release lever	USHBA, 2000	327	133	82	34	376
735	USHBA Hogwauler	Stamped Ti side plates, Al pulley on spring-loaded type-1 locking lever Ti cam, hold-open pin	USHBA, 2000	293	165	88	34	494