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Showing results for tags 'Rope making'.
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Hi everyone! After making a few kits myself, i found out that the ropes that come with the kits usually are not as good as i would want them. I have researched a bit and found out about ropewalks, even found the Domanoff PL4 and Prosak. Still, i dont have the money right now, and i would like to make a ropewalk myself. I have looked into it and found this post: Which is exactly what i was looking for. However, i have seen other designs in which the moving part also twists the rope in the oposite side. My question is, if anyone has tried both, is it worth it to add a motor to the other side? Thank you all
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Lee Valley (Veritas) not only makes tools, but they also have a large collection of old tools. This rope maker from 1880 showed up in their recent newsletter. http://www.leevalley.com/en/newsletters/Woodworking/2114//collection.htm Those of you in the US mid west may want to start hunting in the antique shops.
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Hi, I'm confused by the talk of Z or S twist. I understand the differences, direction. What I don't understand is why? Especially after looking at some pictures of the Victory which I'm about to start. As there are clearly several ropes of each kind same size and same sorts of use. So when would which be used? Or was it a question of which way they ran the machine that day? Or would it normally be one for ropes under a certain diameter and the other for cables? Any help would be gladly received. Izzy
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I was beginning to think about getting/making the correct size ropes and cables for my project. It occurred to me that if I want a certain size finished cable then how do I select the diameter of the strands used in the cable?. There doesn't seem to be any data or formula available for this. I guess most ropewalkers have developed their own by trial and error. I started making a drawing of a 3 strand rope to see the relationship if the strand were assumed to stay circular. I then took the 3 strand rope and used that to make a larger 3 strand cable (now made of 9 strands). Have a look at the drawing in the attached pdf. I then tried to figure out how the helix angle (lay angle) of the rope affects this. As a quick simplification I assumed that this reduced the diameter by the cosine of the angle. Based on my model, a rope made up of three strands of diameter d and a helix angle of A will have an outside diameter of 2.155 x d x Cos(A). Or, for a 9 strand rope, [2.155 x Cos(A)]2 = 4.64 x Cos2(A). Theory is good, but it needs a reality check, so I measured some ropes and string around the shop. The rope measurements and the calculated results are tabulated in the attachment. It turns out the formula works quite well. The numbers I have are for fairly large size ropes, not model size. If some one could measure some of their home made rope, or try to use the formula to make a given rope size, that would be a good test. Also, if anyone had access to actual cable (say a 6" hauser), that would be very interesting. I can update the table or refine the formula as needed. If this works, I could try stroud layed 4 strand rope. Bruce RopeSizeData.pdf
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