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Post by Lancelot Chan on Dec 26, 2017 14:45:16 GMT
This is a part of the research I've been conducting on straight vs curved swords in terms of cutting performance. It is a slow motion compare between a straight sword (Longship armoury 5160H exblunt dadao) vs a curved sword (Simon Maru made by Lung Chuan on plastic bag covered upper arm difficulty target (7 chopsticks core), using 2 techniques in the cuts.
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pgandy
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Post by pgandy on Dec 27, 2017 22:50:26 GMT
A nice comparason. I’ve seen some excellent cuts done with a straight edge but I’ve always done better with a curved blade.
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Post by Lancelot Chan on Dec 28, 2017 6:32:13 GMT
A nice comparason. I’ve seen some excellent cuts done with a straight edge but I’ve always done better with a curved blade. Yes, in test cutting environment (static target, pretty static cutter), curved blade has an advantage. In dynamic environment, with either the target or the cutter or both moving around, the straight blade will catch up or may even do better due to the farther reaching ability and the earlier impact of the straight blade.
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Post by zabazagobo on Dec 28, 2017 7:50:27 GMT
This was a really cool video. While the straight sword still got the job done it was pretty easy to see how curve enhances cutting performance. Thanks for making and sharing, always enjoy your videos.
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Post by Lancelot Chan on Dec 28, 2017 7:58:13 GMT
This was a really cool video. While the straight sword still got the job done it was pretty easy to see how curve enhances cutting performance. Thanks for making and sharing, always enjoy your videos. Yes, it's interesting to see how the straight blade tend to catch on the plastic bag and drag it around, causing resistance during the cut, while the curved blade just "let it go, let it go....".
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pgandy
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Posts: 10,296
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Post by pgandy on Dec 28, 2017 15:12:43 GMT
A nice comparason. I’ve seen some excellent cuts done with a straight edge but I’ve always done better with a curved blade. Yes, in test cutting environment (static target, pretty static cutter), curved blade has an advantage. In dynamic environment, with either the target or the cutter or both moving around, the straight blade will catch up or may even do better due to the farther reaching ability and the earlier impact of the straight blade. That’s good to know as I have only once cut in a dynamic situation and that was with a curved blade, a pinuti, and I achieved the wanted effect with surprising ease. Enough said about that. On the other hand all my testing has been on static targets where I have found with a cut I have more range with a straight blade, better results with a curved. With a thrust using a straight blade my range exceeds all else. Transferring the plastic hanging on the straight edge to clothing, and clothing acts as better armour than most people give it credit for, from what little testing I’ve done in this regard I believe a curved blade’s cut is superior to the straight. However, I’ve found that the thrust will get through when a cut had long since stopped working.
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Post by Lancelot Chan on Dec 28, 2017 18:23:29 GMT
Yes, in test cutting environment (static target, pretty static cutter), curved blade has an advantage. In dynamic environment, with either the target or the cutter or both moving around, the straight blade will catch up or may even do better due to the farther reaching ability and the earlier impact of the straight blade. That’s good to know as I have only once cut in a dynamic situation and that was with a curved blade, a pinuti, and I achieved the wanted effect with surprising ease. Enough said about that. On the other hand all my testing has been on static targets where I have found with a cut I have more range with a straight blade, better results with a curved. With a thrust using a straight blade my range exceeds all else. Transferring the plastic hanging on the straight edge to clothing, and clothing acts as better armour than most people give it credit for, from what little testing I’ve done in this regard I believe a curved blade’s cut is superior to the straight. However, I’ve found that the thrust will get through when a cut had long since stopped working. Totally agree with all your observations! A point doesn't need to be very pointy to still penetrate clothing, and it does it with much more ease than cutting through one.
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Post by Lancelot Chan on Dec 31, 2017 19:45:58 GMT
My student trying his longship straight dao out on the plastic bag covered target and of course it did alright!
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