Progress on the redesign is moving along. This week I've received scans of the crane kingpost, boom head assy, machinery arrangement, all in sections as these drawings were the old format, large C&R construction drawings. From these I've created a couple of the machinery hoists and also the boom head assembly. This in itself was a major piece of work. My initial design was incorrect, but based on photos, not drawings with dimensions. So, the 2nd go-around has this now fairly accurate. Discerning what needs to be included in the model and also left out of the model is also a bit of a task - many details of this equipment would only apply to the actual assembly.
Here is the redesigned boom head assembly -
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1-48 scale Boom Head Assy_2.JPG [ 10.52 KiB | Viewed 573 times ]
While similar in looks, this is quite a bit different from my initial attempt. Another interesting piece of equipment is the boat hoist, located on the lower machinery flat -
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1-48 scale Boat Hoist_1.JPG [ 12.08 KiB | Viewed 573 times ]
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1-48 scale Boat Hoist_2.JPG [ 13.97 KiB | Viewed 573 times ]
Hopefully, the Topping Hoist and the Boom Head Assy along with a couple other associated parts will print successfully tomorrow. Topping Hoist is similar to the boat hoist -
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1-48 scale Topping Hoist_1.JPG [ 12.62 KiB | Viewed 573 times ]
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1-48 scale Topping Hoist_2.JPG [ 13.74 KiB | Viewed 573 times ]
I have not designed the wire rope into the drum as this will be added using bead stringing wire. The curator at the USS NORTH CAROLINA museum told me that most of the interior machinery is painted white and I'm guessing that the decking in the machinery spaces is deck gray for interior and Navy deck blue on the exterior. I also have thanked the curator immensely for the scanning that she and her staff have done for me - quite a job to get these drawings scanned.
I visited Hobby Lobby and purchased 2 sizes of Beadalon Stringing Wire. I need a third smaller diameter but may use cotton thread instead. These companies simply don't make these items in very many sizes. I haven't attempted to see how these wires act as far as flexibility goes, so their actual use may or may not happen.
If the boom head assembly prints out well and the sheaves all fit properly, then I will move on to redesign of the kingpost now that I have the dimensioned drawings to work from.
Hank