In article ,
Andreas Maurer wrote:

Is it possible that you are using the wrong ropes/weak links?

Bye
Andreas

The first rope broke at a splice, not at the "weak link."
When it did break, it came as a bit of a surprise (at
least to me), but was caused by the wrong technique
for slack recovery.

The second rope break happened with what may have been a
2000# strength rope. This one happened more or less
expectedly. We did a lot quite a few slack line recoveries,
correctly, and with progressively more slack. In this
case the rope either broke at the last few feet, or
became unwoven from the ring. In either case, this is
what the tow pilot said is the common break point for
a uniform rope. The tow pilot said it felt like we were
intentionally trying to break the rope, which is not so
far from truth.

I would be surprised if the average gliderport has ever
seen a rope break under "normal" conditions.
If so this would likely indicate rope/weak link
problems. Our procedures that day certainly
were not "normal," but certainly convinced me that
yes, the rope can be broken with poor slack technique or
simply too much slack. The gliderports that
use wave (including Minden) are apparently familiar
with the latter...

I've flown through rotor and soared wave (in a Katana),
but never under tow (self-launch). It's hard for
me to imagine towing through rotor WITHOUT getting
a rope break...