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PBY Catalina (Vintage Plans) Build Thread

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Old 01-19-2019, 01:56 PM
  #26  
fly4food18
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Wow. That looks Great. Subscribed
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Old 01-20-2019, 05:45 PM
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Finished sheeting the bottom of the fuse (the hull that rides in the water and the tail boom. To sheet the bottom of the tail boom, I first made a template out of cardboard. The rest of the fuse is much too curved in its shape to be sheeted, so will have to plank it. I hate planking




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Old 01-20-2019, 05:48 PM
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Meanwhile, the horizontal stab has been coming together too.



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Old 01-21-2019, 08:10 PM
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Finished the balsa blocks around the stab. Did some fill and sanding. Built the elevators and started sanding to shape. Right elevator is hinged and you can see the hinge mounting blocks in both elevators.




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Old 01-22-2019, 05:26 AM
  #30  
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A really "GREAT" build. Enjoy Watching Your Craftsmanship. Chic
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Old 01-27-2019, 05:42 PM
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Originally Posted by redtail View Post
A really "GREAT" build. Enjoy Watching Your Craftsmanship. Chic
Thanks all for the positive support. This is a fun project!!
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Old 01-27-2019, 06:20 PM
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The PBY presents an interesting opportunity for elevator control. The elevator pivot line is in the rudder (not vert stabilizer). This limits how to control it. The plans offer no suggestion for operating the elevator. If you put the hinge line against the horizontal stab this would be easier. But I want scale movement of all the control surfaces.To accomplish this, the only way is to have the elevator control routed into the horizontal stab. Unfortunately this will have to go through the h-stab spar, which will have to be cut in half!
To support the elevator control, the spar will need to be modified with an opening 1/4" wide running top to bottom of the spar. Obviously this will destroy the spar's primary function. The only space to reinforce the spar is inside the v-stab. A plate of ply and carbon fiber in will be used to carry loads around the opening. The spar will be cut to allow the plate to be recessed into the spar and to fit in the original space. Here's a couple of picts. The CF is facing forward in the second picture.


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Old 01-27-2019, 06:26 PM
  #33  
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Continuing now with getting the elevator control and elevators mounted.





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Old 02-06-2019, 07:35 PM
  #34  
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Ran the pushrods for the elevator and rudder. Mounted the H-stab with screws for now.





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Old 02-10-2019, 06:44 PM
  #35  
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Finish sanded most of the H-stab and mounted it permanently to the midpoint of the V-stab. Also covered the elevators with Solartex.

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Old 02-10-2019, 06:49 PM
  #36  
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The remainder of the V-stab is built on top of the H-Stab. To keep the LE line of the V-stab perfectly straight, I glued that in first with an alignment guide, then built the rest of the V-stab.




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Old 02-10-2019, 06:57 PM
  #37  
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The rudder has a 3 step pattern to it, where it mates to the V-stab. It also has a cutout for the H-stab as the rudder wraps around the H-stab. Adding to this complexity, I discovered that the plans are slightly, but materially, smaller than the cut parts. As the rudder must fit like a puzzle piece with the V-stab, I opted to build in free hand, section by section to get it to mate properly. I'm showing it over the plans just so you can see what I am building.



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Old 02-10-2019, 07:00 PM
  #38  
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Finishing the rudder and the cut out for the H-stab.



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Old 02-10-2019, 07:01 PM
  #39  
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The rudder sitting in position.

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Old 02-11-2019, 04:57 AM
  #40  
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Eldher - really enjoying watching your build. By the way, settle an argument between my friend and I. What is the blue stuff you are using as a fill material? I may have missed it, but how did you decide to stiffen/support the area around F-7 and the landing gear area? Many thanks. Chic
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Old Yesterday, 06:15 AM
  #41  
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Great build, will be watching as this one has been on my build list for years,
just don't have enough time to build all the planes from the plans that I have
purchased over the years. Subscribed.
BTW who did the laser cutting of this plan?

Bill D.
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Old Today, 09:48 AM
  #42  
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Looking at how the rudder fits, I can't see how it will be able to move left and right.
am I missing something or is there trimming that needs to be done on the rudder?
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Old Today, 09:57 AM
  #43  
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I was thinking the same thing, just didn't get the chance to post the question
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