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paul wrote:There's a report on ukCaving.com that a caver's Stop fell apart in their hand luckily while still at the beginning a rappel before attaching it to the rope.
It appears that one of the nuts holding on the sideplate had loosened and fell off.
Has anybody else heard of this happening?
mgala wrote:I've seen such situation couple of times, but after replacing the wheels. Simply the nut was screwed too weak. That's why I'm always checking lower nut before descending. For inexperienced cavers we recommend in Poland additional device - shunt - above descender.
caverdoc wrote:He was referring to using a Basic/Simple with beginners. I still use a shunt when I rappel with mine.
Doc K
So Doc, do you use a French Wrap type of shunt below the bobbin, or something above it?
NZcaver wrote:Hank - any comments?
mgala wrote:I said we suggest to use shunt for beginners. I don't use it.
if you descend with shunt, you keep i over descender. it's easier (you don't hang on the rebelay) and safer (double fix) to pass the rebelay with shunt and simple.
you are also safer when the anchor above you (descend out of control) or below you (destroyed bobbin) will break.
...and if you have some problems with your nuts ;)
hank_moon wrote:Below are links to some pictures of the STOP...
ian mckenzie wrote:Well that's obviously a redesigned axle, probably in response to the rare self-disassembies described above. My Stop is over 20 years old and has a regular-type, and rather thin, nut on the end of the bolt. There is slightly less than one thread showing above the nut, which itself probably conceals only a few turns. Top spool is attached similarly. So, the ukCaving reference makes sense. The Stop that I'd seen come apart was perhaps ten years ago.
(EDIT - ***IAN HAS RETRACTED THIS DESCRIPTION - SEE HIS NEXT POST***)
One Stop; irregularly used for the past five years. Checked often. Never had bobbins replaced nor springs. The thing decided to part company of itself in as much as the retaining nut came away from the bolt (lower bobbin section)!!
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