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#4602707 - 06/30/22 09:36 PM 1:32 scale Junkers J.1  
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Hi all,
My build of the RAF BE2c is complete, apart from its display case.
So I thought I'd take a break from resin models and rigging.
Therefore the next model will be the Junkers J.1 armoured ground attack aircraft.
This particular aircraft is Serial No: 596/18 at Dessau airfield, Germany, in September 1918.

Mike

[Linked Image]


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#4602808 - 07/02/22 09:35 PM Re: 1:32 scale Junkers J.1 [Re: Sandbagger]  
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Hi all,
The kit supplied upper wing outer sections have an extension at the wing trailing edges.
This is to represent the cover strip for the leading edges of the ailerons.
However, due to the limitations of moulding, these corrugated cover strips are moulded as straight extensions.
In reality, these cover strips were normally unevenly distorted along their entire length, from slight to heavy distortions.
As they were made from corrugated Duraluminium sheet, my assumption is they were probably distorted by being trodden on by maintenance personnel.

To create these distortions, I used the heat from an electrical soldering iron.
The wing was held of the tip of the soldering iron until the styrene showed signs of softening.
I then eased the styrene into a distortion using the ball end of a paper embossing tool.
Then I just moved along the wing repeating the process.

Now onto the infamous gap between the aileron inboard ends and the upper wing centre section,

Mike



[Linked Image]

[Linked Image]

[Linked Image]


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#4602833 - 07/03/22 03:20 PM Re: 1:32 scale Junkers J.1 [Re: Sandbagger]  
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Amazing! I can almost see tiny footprints where you created the distortion.

#4602841 - 07/03/22 05:01 PM Re: 1:32 scale Junkers J.1 [Re: Sandbagger]  
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Interesting aircraft! So much for the concept of aerodynamics, right?

Seems like you have a nice molded aircraft for a change Mike! I expect this one to be finished in record time 😁


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#4602846 - 07/03/22 08:36 PM Re: 1:32 scale Junkers J.1 [Re: Sandbagger]  
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Hi all,
The upper wing ailerons are supposed to be close to the outboard trailing edges of the centre section.
Once assembled, there is a 2.5 mm gap where the centre section moulding did not include an extension to meet the ends of the ailerons.
Making inserts to fill the gaps is tricky as the wing surfaces are corrugated.
However, the kit sprues have two parts (24 and 25) which are not used and these are corrugated on on side.
I cut two strips with two corrugations to fit the gaps.
These were cemented into the gap on the top surface of the upper wing.
There is not enough of parts 24 and 25 left to use on the underside of the upper wing.
Therefore I cut inserts from 0.5 mm styrene sheet to fill the gaps then added two 0.5 mm wide styrene rods to represent the corrugations.

Mike

ORIGINAL GAP
[Linked Image]
UPPER SURFACE INFILL
[Linked Image]


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#4603029 - 07/06/22 03:00 PM Re: 1:32 scale Junkers J.1 [Re: Sandbagger]  
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Hi all,
Although the kit supplied engine (Benz Bz.IV) is of good quality, there are details of the engine not included.
1. Cylinders coolant pipe (left side of engine only).
2. Ignition lead support tube (both sides of the engine).
3. Fuel primers (left side of engine cylinders).
4. Carburettor pre-heating gallery.
5. Carburettor pre-heating pipe.
6. Carburettor pre-heating pipe.
7. Carburettor pre-heating supply pipe.
8. Ignition leads (both sides of the engine).
9. Carburettor control rod.
10. Fuel supply connection (possibly).
11. Bleed pipe (possibly).
12. Valve gear push rods (6 each side of the engine).
13. Oil filter and pipe.

[Linked Image]

I've made a start by cutting away the pre-moulded and flat coolant pipe across the bottom of the cylinders.
This was replaced by 0.8 mm diameter styrene rod inserts.
Also the ignition leads support tubes were made from flattened 0.6 mm diameter brass tube.

[Linked Image]

Next up are the cylinder fuel primers,

Mike


[Linked Image]

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#4603434 - 07/11/22 03:28 PM Re: 1:32 scale Junkers J.1 [Re: Sandbagger]  
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Hi all,
The engine is as complete as I can get it.
I've added some details:

Ignition leads support tubes
Ignition leads
Valve gear push rods
Cylinder fuel primers
Float chamber fuel supply
Magneto spark advance rod
Throttle control rod
Carburettor interconnection rod and levers
Rear engine pipes and tachometer drive.
Coolant pipe through cylinder bases
Coolant supply pipe from water pump.

The engine controls will be attached to the fuselage/cockpit later in the build.
Now onto the fuselage,

Mike

[Linked Image]

[Linked Image]

[Linked Image]


[Linked Image]

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#4603488 - 07/12/22 02:12 AM Re: 1:32 scale Junkers J.1 [Re: Sandbagger]  
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catch Offline
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QLD, Australia

Dammit man that's almost as good as the RAF-1 engine!

#4604026 - 07/19/22 05:00 PM Re: 1:32 scale Junkers J.1 [Re: Sandbagger]  
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Coningsby, Lincs, UK
Hi all,
The basic fuselage internals are done.
Although no rigging is necessary I have added the rudder and elevator control lines.
I've also added extra fuel pipes to the main fuel tank and the 'Telefunken' wireless aerial wire, wrapped around the spool on the set in the gunners cockpit.
Finally the two filler caps on the right side forward from the pilots cockpit - I assume these were for fuel and coolant.
I've not fitted the two aileron control rods from the cockpit as they can be easily broken during subsequent handling.
I've tested and they can be fitted later but before the engine is finally fitted.
The engine shot below is test fitted only.

Mike

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]


[Linked Image]

Alienware Aurora R5
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#4604059 - 07/20/22 04:36 AM Re: 1:32 scale Junkers J.1 [Re: Sandbagger]  
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catch Offline
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QLD, Australia
She's lookin' hot bagger. smile Hotter than an English summer.

#4604240 - 07/21/22 06:11 PM Re: 1:32 scale Junkers J.1 [Re: Sandbagger]  
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Hi all,
The hinged engine access doors had more detail than provided on the basic doors that are supplied in the kit.
Also Wingnut Wings chose to have four bracing ribs moulded onto the inside of both panels.
However, The only photographs of these panels, either at the time or museum aircraft, don't show four bracing ribs.

They seem to have been located on the doors as either:
Two ribs - front and forward
Three ribs - forward, centre and rear
Two ribs - forward and centre.

Also there are details that needed to be added:
Lightening holes in the bracing ribs
Retaining cable or rod
Additional bracing tubes
Ports from the external cooling air louvres (right door only)
Access panels to the engine (left door).

I opted for the three ribs (forward, centre and rear) as shown below.
The ribs were cut from 0.5 mm thick styrene sheet and drilled using 0.6, 0.8, 1.0 and 1.2 mm diameter drills.
The bracing tubes are flattened 0.7 mm diameter Brass tube.
Cooling ports and access panels were cut from 0.2 mm thick styrene sheet.

[Linked Image]

[Linked Image]

[Linked Image]

Now onto the locking plates for the two access panels.

[Linked Image]

Mike


[Linked Image]

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#4604255 - 07/21/22 08:48 PM Re: 1:32 scale Junkers J.1 [Re: Sandbagger]  
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Sandbagger Offline
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Hi all,
The locking plates for the two access panels.

[Linked Image]

Mike

Last edited by Sandbagger; 07/21/22 08:54 PM.

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#4604478 - 07/26/22 08:22 AM Re: 1:32 scale Junkers J.1 [Re: Sandbagger]  
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Hi all,
All of the parts have now been painted.
I've replaced the Parabellum machine gun with a 'GasPatch' Parabellum LMG14, which only meant a slight modification to the lit supplied mounting.
Now onto applying the decals and then weathering, before construction of the model,

Mike

[Linked Image]

[Linked Image]

[Linked Image]


[Linked Image]

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#4604572 - 07/27/22 08:41 AM Re: 1:32 scale Junkers J.1 [Re: Sandbagger]  
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catch Offline
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I mean these kits ain't cheap. You've said so yourself bagger. But there seems to be an awful lot of cutting corners going on. There must be heaps of model WW1 crates out there wot have inconsistencies with the truth. Luckily for us, we get the real deal here and not Junk.

#4604574 - 07/27/22 09:11 AM Re: 1:32 scale Junkers J.1 [Re: catch]  
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Originally Posted by catch

I mean these kits ain't cheap. You've said so yourself bagger. But there seems to be an awful lot of cutting corners going on. There must be heaps of model WW1 crates out there wot have inconsistencies with the truth. Luckily for us, we get the real deal here and not Junk.



I see what you did there - Junkers - Junk biggrin

Mike


[Linked Image]

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#4604617 - 07/27/22 05:31 PM Re: 1:32 scale Junkers J.1 [Re: Sandbagger]  
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Hi all,
A few updates.
The 'Aviattic' 5 colour faded lozenge decal applied.
Also the kit supplied decals.
I had to print the serial number for this particular aircraft.
I've fitted the tail plane, fin and rudder.
Also the two flare racks, engine Tachometer and pilots mirror.

Now it's weathering before assembly,

Mike

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]


[Linked Image]

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#4604641 - 07/27/22 07:28 PM Re: 1:32 scale Junkers J.1 [Re: Sandbagger]  
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Hi all,
I've represented the front and rear grills of the radiator in the upper wing.
Cut strips of the 'RB Productions' Radiator Mesh (RB-T027), sadly no longer available.

Mike

[Linked Image]

[Linked Image]


[Linked Image]

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#4604646 - 07/27/22 08:07 PM Re: 1:32 scale Junkers J.1 [Re: Sandbagger]  
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As they say, the devil is in the details and you sure find every devil! Absolutely fantastic work!


Never approach a bull from the front, a horse from the rear or a fool from either end.
BOC Member since....I can't remember!
#4604715 - 07/28/22 09:26 PM Re: 1:32 scale Junkers J.1 [Re: Sandbagger]  
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Coningsby, Lincs, UK

Hi all,
One dirty ground attack Junkers J.1.
'Flory' Dark Dirt fine clay wash then sealed with 'Alclad' Light Sheen (ALC311).
Now to apply the metallic wear by dry brushing,

Mike

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]


[Linked Image]

Alienware Aurora R5
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#4604759 - 07/29/22 06:36 PM Re: 1:32 scale Junkers J.1 [Re: Sandbagger]  
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Hi all,
I've dry brushed the metal corrugations of the wings, fin, rudder and tail plane, plus the struts, to give an effect of paint wear over Duraluminium.
The fin support struts, tail skid and aileron control rods have also been added.
The lower wing and struts are fitted as is the engine.

Now onto the fitting of the upper wing,

Mike

[Linked Image]

[Linked Image]



[Linked Image]

Alienware Aurora R5
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32 Gig DDR4 2133Mhz
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