OTW Type VIIc/41 Conning Tower (Part 4)

 
I needed a short break from sanding so I worked on the rigging. First clean up the insulators with the smallest file you can find. Next cut a length of string (1 to 1.5 mm in dia.) to 5 mm. CA glue the ends together then place a .5mm piece of heat shrink tubing over the glued area. Insert the insulators. To shrink the tubing DO NOT use an open flame, use a hot source i.e. halogen light or soldering iron.
The connecting bolt is a bit more difficult to clean up. I used a micro drill to clean out the slot. By drilling out the center and rolling the drill on the side you are able to clean out the part. After, thread the string through the connecting bolt before closing the loop with CA glue. Linking up sections is done in a similar way. Thread the string though each section prior to closing the loop.
Each rope section can have one end permanently attached to the hull giving a more realistic look. The sections are then secured by a taught piece of elastic polymer thread (EPT). In this case I used thread called "BLACK Stretch Magic™" To match the diameter of the rope thread I used 1mm diameter EPT. I attached a small brass hook at each of the end of the EPT and secured it with CA glue and heat shrink tubing. I made the EPT 1 inch shorter than the length I needed, hook the line through the plastic connecting bolt, and I have a taught line that can be remove for service.
 
Although the stern is probably the second most daunting area next to the wintergarden it is possible to make everything work together. As I have found out making it all work together is the most important aspect. I cut out an area about 3/8” X 2” under the prop housing. The resin prop housing is hollow which allows the prop shafts to “float” in order to find alignment. Rubber bands and duct tape temporary hold items in place. Important: make sure props spin when they are attached to the shaft and placed in the propeller housing. I made a jig to hold the prop shafts at a spacing of about 2 ¾” inches inside the hull. If you have the WTC place it inside to make sure the shafts come out as straight as possible. To fill the holes in the propeller housing I used automotive filler then filled and shaped it accordingly.
A jig was made to aid in the alignment of the rudders. The jig helped in aligning the X, Y, and Z axis. One foot long steel rods helped in visual configuration of the rudders and three foot long brass rods helped in alignment of the prop shafts. After the rudders were placed in the stern post was reinstalled and the rudder support arm manufactured. A small brass eye screw inserted into a brass tube over a brass rod help make the support arm. A large propane torch was used to solder everything together. Aluminum heat sink clips and a wet rag were used to control the heat from spreading to the hull.

 

 

 

 

 
Intro Part 1 Part 2 Part 3 Part 4 Part 5 Part 6