Author Topic: Phonix DI  (Read 11113 times)

Offline DMPopa

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Re: Phonix DI
« Reply #45 on: July 09, 2024, 11:08:16 AM »
Do you ever hit a point on a model and say I am done with this part, and then rebuild it, then rebuild it again?  I am guilty of the same thing.   I decided to test fit an upper fuselage skin piece that is one, not two pieces and I liked the look.  The result looked promising so I printed a new piece and went to work.  I glued it over the existing parts and his is the result after the glue dried.



The new skin is glued to an existing surface that follows acceptable contours, and I have a much larger gluing surface by virtue of gluing against a much larger area; the existing skin.   The seam between the upper and lower skin parts is noticeable , more forethought in the build and I could have avoided this. 

The added piece, because it is glued over an existing piece had to be wider, so that the crescent and star design lined up correctly.   So using Gimp I added in an additional piece along the centerline, which caused the two sides to separate.   I printed out just the pieces I needed in a separate print file.



The area where the design is, this is a challenging part of this kit that has to be respected.   The stock kit (my version is my own repaint), it has a design that spans both the upper and side pieces, an angled line.    If the fuselage structure is a little high, or wide, this top piece which wraps around the fuselage structure will not line up properly.  The bulkhead at the midspan of the aft fuselage structure, which is a gluing aid for the two piece upper pieces, this seems to be two thick in the left/right direction and will leave a noticeable bump in the fuselage.  The single piece fared in well so I am not sure why the upper fuselage skin has to be two pieces and a bulkhead is necessary.   

Here is another view of the finished piece:





« Last Edit: July 22, 2024, 04:21:36 AM by DMPopa »

Offline NigelR

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Re: Phonix DI
« Reply #46 on: July 09, 2024, 06:11:34 PM »
Wow, that is a lot of work but it is looking good.

Offline DMPopa

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Re: Phonix DI
« Reply #47 on: July 13, 2024, 05:43:28 AM »
I am working on the front fuselage cowl (or I think this is what it should be called).   I first attempted to fabricate the cowl and test fit it to the front of the fuselage structure as a single build up piece, but after failed attempts at fitting, I decided to cut the paper piece into four (4) different pieces and assemble the part in pieces.



The first piece is the bottom center:



Below is one of the side pieces as installed.   The side piece curved part is challenging as it is an edge on edge glue joint on the paper, and it is curved.   I rolled the paper, test fit, rolled, etc... until I got a good joint match.   I put glue in the structure part and gently placed the side piece into the glue and after it dried, I added additional glue at some joint cracks and put some grey paint over the glue.



I have avoided putting the engine until the last moment so not to damage the engine details.  When test fit, I found that I had to deepen the opening un front of the cockpit as the cooling water passages I added caused an interference at this location.   



This picture shows the deepened engine opening and illustrates where the upper piece of the cowl will go.

I also did some other work on the fuselage, I added the side covers.   I cut these out of card stock and burnished the back side, and after gluing to the fuslage, I ran the burnishing tool around the cover.   I had also added grey paint on the paint edges.



I added the leather strip around the cockpit.   I painted it a gloss dark reddish brown.









Offline NinetythirdLiberator

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Re: Phonix DI
« Reply #48 on: July 13, 2024, 07:07:05 AM »
Nice work on the front.  It's a complicated shape and you are nailing it.

Dan

Offline NigelR

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Re: Phonix DI
« Reply #49 on: July 13, 2024, 05:56:21 PM »
This looks like a lot of hard work but you are making good progress.

Offline RAGIII

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Re: Phonix DI
« Reply #50 on: July 14, 2024, 01:24:02 AM »
Nice work on the front.  It's a complicated shape and you are nailing it.

Dan

What Dan Said!
RAGIII
"A man has to know his limitations": Harry Callahan

"Don't slop it on" Lynda Geisler

Offline DMPopa

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Re: Phonix DI
« Reply #51 on: July 17, 2024, 01:21:01 PM »
The engine is installed, top part of the cowl is in, the "crown" piece on top of the cowl is in and the machine gun ports are added.   The references show the gun ports as extensions to the cowl, which are modeled here as .040" dia. velum paper tubes constructed using the method described earlier.   The velum paper tubes are an appropriate diameter that also produces the hole I desire at the exit end.  Two angled cuts are made, one angled cut to interface with an angled surface of the cowl and the other angled cut at the exit to match reference photos.  A piece of wire is added at the cowl end in the tube, a hole is drilled in the cowl and the tube is glued in place.   Any gaps are smoothed with white glue and painted.  One governing factor in the length of the tubes are they cannot extend past the end of the cowl, or else they will interfere with the propeller.






Offline RAGIII

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Re: Phonix DI
« Reply #52 on: July 18, 2024, 12:22:25 AM »
Excellent update! Looks great.
RAGIII
"A man has to know his limitations": Harry Callahan

"Don't slop it on" Lynda Geisler

Offline NinetythirdLiberator

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Re: Phonix DI
« Reply #53 on: July 18, 2024, 04:32:15 AM »
Something about getting that engine in that really sets it off.  Nice job!

Dan

Offline DMPopa

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Re: Phonix DI
« Reply #54 on: July 20, 2024, 12:25:18 PM »
The rudder has been constructed and this segment will start showing the rudder temporarily attached to the fuselage.  I am starting with the in-process, finished rudder to illustrate a challenge that this repaint posed.  That is, the Black Cross spans the fuselage and the rudder and care has to be taken so the graphics line up properly.   The stock kit does not have this feature so I guess that I brought this on myself. 



The test fit of the initial graphics showed that the fuselage and the rudder images will not align with each other.   I suppose this is due to some lack of skill on my part, but I elected to fix the problem by creating an enlarged rudder graphic in Gimp and print this separately and position the rudder skin appropriately.  I am satisfied that the effect is achieved, even if the graphic is off from the original drawings.



I will apply the rudder skin in two half's, rather than a single wraparound as the kit provides, so two separate images, the left and right side are required.

The core of the rudder is a backing made of thicker cardboard stock.   The trailing edge is feathered to an edge.



Lets pause to talk about tools.   To remove the cardboard to create the feathered edge, I used this sanding board, sourced from the local Dollar Tree store for USD 1.25. 



The skin is glued to the backing, which is pre-painted at the edges and the excess will be trimmed away.



This is the completed rudder.  The control arms are thin aluminum cut from a beverage can and painted brown.  A slit is cut through the rudder and the aluminum control arm is forced through.  No glue is used.  I chose aluminum as paper most likely would not survive the process of squeezing through a narrow slot.  I also cut slots where simulated hinges will be placed.   Additional paint is added at the edges to cover the skins paper edges.



The plan is to fabricate the dorsal fin on top of the fuselage and upstream of the rudder and complete the assembly all at once.   

Offline NinetythirdLiberator

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Re: Phonix DI
« Reply #55 on: July 20, 2024, 01:52:18 PM »
Hard work on this one but it's paying off!

Dan

Offline NigelR

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Re: Phonix DI
« Reply #56 on: July 20, 2024, 07:14:46 PM »
Definitely a lot of work but it is looking good.

Offline DMPopa

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Re: Phonix DI
« Reply #57 on: July 22, 2024, 04:19:20 AM »
The dorsal fin and the rudder are assembled to the fuselage.   The dorsal fin cardboard structure was cut out and test fit to the fuselage and rudder.   The test fit indicated the dorsal fin needed to be shortened so about 0.100" was cut from the bottom.   The skin was glued to the sides similar to the rudder; one side with extra stock is glued to the cardboard and trimmed, the other side is glued and trimmed and the exposed edges painted.  The hinge notches are cut. 



The dorsal fin is glued in place and a paper clip holds it in place.   The dorsal fin is layed on top of the fuselage top and there are no pins or tenons to add security.  Glue was put on the dorsal fin, clamped and later glue was carefully run along the seam for extra strength.



The rudder is added with .040 dia Plastruct rod painted green or black as the hinges.   The hinges do not show much so they are not necessary but are here anyway.   Test fitting showed that the fueslage surface was not flat, so the Diamand grinder written about earlier was used to flatten the surface and paint applied afterwards.   The rudder needed some cleanup itself.   Glue and more glue was needed to get this rudder to stay put.



Here are some other views:





My approach to this part of the model was not cut / assemble, but rather cut / test fit / reprint / cut  / repeat.../ assemble.    The physics of the problem is that small deviations from the ideal can really throw things off and multiple deviations can accumulate into big problems.   For example the aft part of the fuselage has three different paper parts at the rudder surface and getting these all to precisely align is not reasonable.  The engineering of the kit plays a part in this; the engineering of this kit leaves something to be desired.   I do not believe that I am a bad modeler when these things happen, it is the way things really are.  Enjoy the build process and modifications that move the model off the ideal is OK as long as the intent is meant. 






Offline NinetythirdLiberator

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Re: Phonix DI
« Reply #58 on: July 22, 2024, 05:06:10 AM »
Nailing it from here...Dan

Offline RAGIII

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Re: Phonix DI
« Reply #59 on: July 22, 2024, 09:08:32 AM »
"A man has to know his limitations": Harry Callahan

"Don't slop it on" Lynda Geisler