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Hooben 1/16 Mark IV Male Kit

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Hooben 1/16 Mark IV Male Kit

Old 04-02-2023, 08:38 AM
  #76  
heavyaslead
 
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More photos


front plate assembly brass parts

front bridge hatches

assembly area

side plates with brass and rivet

top hatch access for on-off switch and volume control

rear exhaust detail

final drive sprocket

bottom detail
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Pah co chu puk (04-03-2023)
Old 04-02-2023, 08:50 AM
  #77  
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So far only found 2 holes that were not tapped in the side plates and 4 rivet holes that did not line up well with brass part, fairly minor in the scale of this build, but easily remedied with a 1/32 drill bit

By the instructions, there are some assembly of build that makes install of the rivets very difficult if not done out of order before sub-assemblies are attached

There are a few numbered assemblies of duplicate parts that should be for a different side, but this is minor as the assemblies are mirrored parts so they install identically to either side - particularly the brass parts installation on the inner and outer side panels. Not a big deal but the rivet counter, no pun intended, will notice the difference.
Old 04-02-2023, 10:21 AM
  #78  
ankhx
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My Mark IV is completed. HL 7.1 inside. Each gun is controlled separately (rotation, up/down, flash, smoke) - I used additional 7.1 servo that triggers bespoke 4x 3 pole switches. I didn't bother with MMGs so all fire at the same time. Sound (tiger 😂 ), smoke etc, etc, etc. Really realistic movement thanks to low RPM motors. Only problem - no way of getting inside if something goes wrong - when it's put together that's it.
Old 04-02-2023, 10:21 AM
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Old 04-02-2023, 10:22 AM
  #80  
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Done!
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Old 04-02-2023, 12:50 PM
  #81  
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Looks great, I like the weathering! Did you rig it so the fascine will drop when at a trench? A video of it running would be great!
Old 04-02-2023, 01:07 PM
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Originally Posted by Tankhobby
Looks great, I like the weathering! Did you rig it so the fascine will drop when at a trench? A video of it running would be great!
Thanks. No it's 'static'. Far too small but it would just overwhelm the tank otherwise. I like painting but hate weathering in that scale so just fairly basic job. I'm planning to shoot a short video tomorrow, will share.
Old 04-02-2023, 03:34 PM
  #83  
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That is a beautiful paint job, what is the paint type or number used?
Old 04-02-2023, 10:34 PM
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Originally Posted by heavyaslead
That is a beautiful paint job, what is the paint type or number used?
- metal primer (grey) followed by Vallejo Premium Color White Primer
- AK Interactive 3rd Gen WWI British Colors Modulation Set # 11644 - all the base colours
- shading: Winsor & Newton Winton Oil Colour Raw Umber,1414554
- filter: MIG MIG1511 BROWN FOR DARK YELLOW
The rest is chipping (acrylics) and weathering (pigments and variety of AK Interactive products).

It's the entire process that gives the finish. Just to compare I used the same basic paints for 1/35 Mark IV several months ago but used other products in later stages. The finish is completely different:

Old 04-03-2023, 01:51 AM
  #85  
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Here is a short video of the tank:

Several more pictures:





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Old 04-03-2023, 01:00 PM
  #86  
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So how did you set up the 7.1 for separate turret control (elevation and rotation) the two turrets?

I see how Hooben suggest with a separate receiver (and Y-plugs), but with the 7.1 with built in receiver how is that done?

Maybe a diagram please?
Old 04-03-2023, 01:35 PM
  #87  
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Originally Posted by heavyaslead
So how did you set up the 7.1 for separate turret control (elevation and rotation) the two turrets?

I see how Hooben suggest with a separate receiver (and Y-plugs), but with the 7.1 with built in receiver how is that done?

Maybe a diagram please?
A bit of engineering - I used additional 7.1 servo which is controlled by the slider on the remote. When moved that triggers bespoke 4x 3 pole contact switches which directs power between the turret components (flash, smoke motor, gun elevation, turret rotation). I designed and printed simple housing, servo on top with long screw attached to the arm. Normally open position directs voltage to one turret electronics, when you move the servo via 7.1 remote slider switches are closed and voltage goes to the other. Servos would be easier to use here but they have the position memory so when I would switch between the turrets the turret/gun would move by itself. Converting servos to normal geared motors didn't work - too fast, with resistors not enough torque. I ended up using N20 geared motors with about 10rpm at 6V.
Here is the principle how it works based on turret rotation (I don't remember exactly - one pin is normally opened, one normally closed, one common). The same goes for gun elevation.
Then gun flash/smoke circuit with 2x HL smokers - both smoke units connected to that board, only motors controlled via the switch plus flash/LED.




Last edited by ankhx; 04-03-2023 at 01:48 PM.
Old 04-03-2023, 04:57 PM
  #88  
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Nice engineering work! Would have not figured that out myself. Still will take a while for that to sink in how the dynamics of that work.

I hope mine comes out as successful as yours!
Old 04-22-2023, 12:19 PM
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More update pics from my build

There is a statement in the instructions that is quite applicable and true to Hooben:

"I will not express it in detail..."

There could be some clarity in the steps like blow ups of fine parts installation. Being such a unique model from other tank models, there are many seemingly mirrored assemblies that may have fine non-mirrored parts, so care in installation should be taken.

The drive sprocket parts assembly could use some extra care as Hooben did not accurately drill tap the parts for a perfect fit. Had to re-drill mounting holes and shave some out of the axle hole to prevent binding.

The biggest miss I see is as previously mentioned by 'ankhx' once put together there is virtually no access to components if adjustment or repair is needed.

I did manage to orient the electronics such that can access all plug-ins and settings via the battery compartment door.
Old 04-22-2023, 12:30 PM
  #90  
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electronics relocation to access under battery door

sprocket assembly mis-aligned

re-tapped hole to align sprocket teeth

sprocket chain and drive assembly

sprocket chain and rollers

sponson assemblies

rear sprocket and chain assembly

side plates assembled
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Old 04-22-2023, 12:34 PM
  #91  
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main gun assembly
Old 04-22-2023, 01:06 PM
  #92  
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Looking good! There are a lot of rivets. Do you know how much time was spent just putting all the rivets in?
Old 04-22-2023, 01:29 PM
  #93  
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I estimate 1/2 of building time is cosmetic rivets, bolts and nuts
Old 04-24-2023, 11:48 AM
  #94  
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Nice work Eric. You make it look WAY too easy.
Old 04-24-2023, 10:06 PM
  #95  
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Hi Eric,
The drive sprockets are aligned just not symmetric. I had the same problem but after disassembling and playing around I found the right way of putting them together.
Old 04-25-2023, 04:20 AM
  #96  
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I was able to get one sprocket to align properly by messing with pieces combinations, but not the other as I noticed the machined steel gear actually had slight yaw in the tapped hole which mis-aligned with the sprocket wheel.
Old 04-25-2023, 05:04 AM
  #97  
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One technical item Hooben may have missed is the mark IV male did not have mirrored sponsons. The right and left are slightly different due to the loader and gunner positions at the cannons being the same and not mirrored on both sides.


Old 08-29-2023, 06:49 PM
  #98  
yellowshaker
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Along with a Merkava, this is a tank I want. Did you guys say ti DOES NOT have metal tracks???
Old 08-29-2023, 07:43 PM
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Nope, plastic.
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