PLuumet said
Its physics. I surface that is subject to rubbing and abrasion will wear out sooner than one that doesn't have any rubbing.
Does airush publish bridle lengths?
If so go and measure. See how much the pully bridles have shrunk compared to others.
Yup, I agree, if the 'pulley' is a solid block, you would get friction. Didn't they use them on Slingshot?
The pulleys on Airush are like sailing blocks, where the internal wheel actually turns, so meaning less friction on the bridle. Only if the pulley seizes will it cause it to rub, then friction, etc. etc.
I kite at a mixture of beaches so experience all types of sand, from fine to chunky sands. I've yet to have a pulley jam.
The LF ones on my Havoc & Envy's used to have to blasted with water every couple weeks to clear them and get them free again.
Yes, Airush do give bridle lengths, as posted above. Like I said I'm sure the 2013 Wave I have probably does have some shrinkage and I will be investigating that soon. But I reiterate (again) no pulley seizing or wear on the bridles from using a pulley, on that kite in 5 years.
Shrinkage and wear are two different things.
Zarb
Try and get a demo, only you know what you'll like. Enjoy the time on each :