You really don't want to use aluminum turnbuckles on a sailboat. Aluminum, aside from the corrosion issues, has one other issue that makes it extremely unsuitable for sailboat rigging, which is dynamic in nature rather than static—fatigue. Aluminum will fatigue under the loading and unloading cycles as your boat tacks and gybes. Stainless steel has to be strained beyond a certain point before it starts to fatigue. The turnbuckles will fail without any warning once they pass the fatigue limits of the material they're made of.
You really need to get marine grade stainless steel or bronze turnbuckles.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.
—Cpt. Mal Reynolds, Serenity (edited)
If you're new to the Sailnet Forums... please read this To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Still—DON'T READ THAT POST AGAIN.