I'm installing wire rope for a fence. It would look something like this fence here: 
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I was thinking of using a hand winch to tighten the rope. So let's say the winch does its job, I crimp the ends, and the wire rope is tight. My question is: do I really need turnbuckles?
I've had issues finding stainless steel turnbuckles. The ones at Amazon look flimsy, and the ones I've seen at other websites are just too expensive.
Best Answer
When installing that way you will not be able to get maximal tension because you need some space to apply the crimps.
Also over time the cable will stretch. This means that you will need to retighten the cable a few times. That is impossible if you crimped the ends.