I meant the blade alone. The whole thing is maybe 57 inches. Do you think I should lengthen it? To be honest I'm not extremely educated in these things. I had to do some research.
For a truly massive blade, I'd go about 47 inches and put the rest on width. Anything more overbalances it in length rather then weight, which can damper things regardless of strength. I'm a sword and knife enthusiast. Thing is, a zweilhander, the bigger of the two styles, is way bigger. Most were larger, handle and blade total, then a full grown man. The example, in pic, is more claymore style though.