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> To all it may concern: > > I spoke with one crew advisor on the phone about the bear bag system as proposed by Al Geist.
Hi Mike.
I just heard back from Philmont Crew 627-B-13 who used my bear bag pulley system for their entire trek. Here is their report:
Just returned from Philmont this past weekend, and used your Bear Bag Rope system, or a variation of it, during the whole trek.
A few comments:
On the whole, yours is a great system. We replaced the inexpensive "Harbor Freight" pulleys with smaller and higher-quality sailboat tackle, but used your hook design and am-steel rope exactly as shown.
Like your crew, we found the mechanical advantage of the four pulleys allowed us do away with the "Oops Bag" entirely, as the largest loads (even on food pick-up days) could be easily hoisted by two youth crew members
We did have minor problems in two areas:
- Low Bear Bag Cables: Several Philmont bear bag cables are too low
to allow for the required drop when using the string spool toggle as the jam mechanism. On cables minimally only 15'-16' above the ground, the bottoms of our lowest bear bags would hang 12'-13' above the ground when fully raised, but then drop to an unacceptable 8'-9' as the toggle rose and the bags descended (at a 4:1 ratio).
Solution: In these instances, we merely placed our release spool and twine into our rope bag, and tied off the rope and bag to a single tree using the standard Philmont wrap method. This kept our bottom pulley and the bear bags fully against the low bear bag cable.
- Hook Release Twine Issues:
Occasionally, other crews would entangle our hook release string, rendering it unusable. In these situations, we found that the hook could still be easily and reliably released as long as there was any other bear bag still hanging on the cable. All that was required was to drop our bags, and while holding our bottom pulley at ground level, walk the hook and upper pulley along the bear bag cable until it contacted another crew's tie-off line. At that point, the hook would readily rotate off the cable and onto that line, and slide down the other crew's line to the level where it was tied off.
Occasionally, tugging on the release twine failed to release the hook. In these cases, simply throwing the twine spool back over the bear cable (in the reverse of the direction from which it originally came) allowed dropping the hook with a simple tug.
All-in-all, it is a great system. The trade-off in weight, and particularly in ease of raising heavy loads, was well worth the effort. I would definitely use the system again!
Bob (Crew 627-B-13)
Edited by geist on 07/13/2010 19:40:55 MDT.
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