RCU Forums - View Single Post - Top Flite B-25 - Wingspan Models Add-ons Build Thread
Old 07-07-2008, 11:34 PM
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RCKen
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Default RE: Top Flite B-25 - Wingspan Models Add-ons Build Thread

With the base part of the turret cylinder built it’s time to finish it off. The two remaining light ply disks will be used finish out the top turret. There is a cutout in each of these pieces that will be removed. This area needs to be open mainly because a sheet metal screw is used to hold secure the turret in place and it’s put in place through the inside of the cylinder. Also, Wingspan also has available [link=http://wingspanmodels.com/Products/Accessories/Bomber_Pilot.html]scale figures[/link] that can be placed in the turret. Other figures should work here as well. Unfortunately I didn’t receive one of these figures, as it would have made a nice touch to the turret. Anyway, cut through the tabs holding the wood in place and remove the cutouts. It’s easier to place the TT2 in the cylinder and then glue it in place. TT2 should be place in the cylinder with the edge of the light ply strip even with the top of TT2. When happy with the placement of TT2 use medium CA to glue in to place. Work in small sections as was done when gluing TT1 in place, and work your way around the cylinder. With the top of the cylinder glued to TT2 the joint line will need some work. As you can see in the pictures it has a pretty good “pucker” where the light ply strip meets. I worked as hard as I could when gluing the strip in place but I still wound up with the pucker. I finally decided on a pretty simple fix for it. I cut ¼”x ¼” balsa stock a length that would fit inside the cylinder. With this in place I was able to glue the light ply strip to the balsa stock. As you can see in picture #7 it removed most of the pucker, but there was still a bit left to deal with. To remove this I filled the gap with medium CA, and when that was dry I sanded the joint until it was smooth and even with the rest of the cylinder. Lastly TT3 is glued in place on top of TT2. Simply spread medium CA on TT2 and place TT3 on top of TT2, and then hold in place until the CA dries.

With that the major part of construct of the cylinder is finished. Up next we’ll start cutting in to the fuselage to place the turret.

Pictures
1. Remove the cutouts from TT2 and TT3
2. Dry fit TT2 in place in the cylinder
3. When satisfied with the fit use medium CA to glue TT2 in place
4. The “pucker” left where the light ply strip meets
5. Measure a ¼” x ¼” stick to fit inside of the cylinder at the joint.
6. Glue the strip in place inside the cylinder, gluing the ends of the ply strip to the balsa stock
7. Use medium CA to fill the gap left
8. Use a sanding block to sand down the joint so that it is smooth and flush with the cylinder
9. Cylinder sanded flush
10. Another view of the joint sanded flush
11. Apply medium CA to the top of TT2
12. Glue TT3 in place on top of TT2

Until next time

Ken
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