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/diy/ - Do It Yourself

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1965743 No.1965743 [Reply] [Original]

The extra 540 length of chain is needed from the sail to post for tensioning... It's factored into the equation. Iv done the height also...

Iv realised my mistake through your comment though, I didn't add it to all 4 corners. So it would look like this?

>> No.1965748

If the little 540 in the corner means a rope (length 540) between each corner of the sail and each post, that makes this a bigger square which includes four 540 length ropes.

A right icosceles triangle with hypotenuse 540 has sides length 381.83.
5400 sail length, plus 381.83 (twice) makes sail plus ropes a square of 6163.66 per side.

That square, hung between posts with 1000 height difference, means:
The ground distance between the taller and shorter posts: 6081.66.
Between same-size posts: 6163.66

>> No.1965752

I was assuming the posts are in pairs, two shorter and two taller, and with shorter ones on one side and taller ones on the other side.

But if that's not correct then my numbers are wrong.

>> No.1965754

>>1965748
You are a gentleman and a scholar. Thanks so much.

>> No.1965763

>>1965752
That's exactly what I'm after. Essentially a 5400mm lean to with 540mm chains at 45deg to the sail.

Looking at post location on the ground.