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Nakajima KI44-II Otsu Shoki part 1

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  • Member since
    March, 2019
Nakajima KI44-II Otsu Shoki part 1
Posted by the lukanian tool corp on Wednesday, July 10, 2019 5:04 PM

All,

Im honoured to present to you the most recent project of the LTC:

1/20th Nakajima KI44-II Otsu "Shoki"

An Air superiority fighter, designed to cover the weak points of both the A6m Zero and the KI43 Oscar, namely;

  • Poor rate of climb
  • Poor high altitude response

The Ki44 Shoki surpassed its requirements quite ample and was to be considered one of the fastest climbing aircraft on its introduction in Dec 1941. Regardless of its pedigree, the Shoki is quite an rare machine in contemporary media: whereas the A6m Zero is well covered, refrence material on the Shoki is on short suply, with many drawings contradicting eachother.

The forward fuselage section, part 1 

With a length of 437 and a span of 472mm the Shoki is rather small.                Features will be:

  • All metal build
  • Working flight controls, including flaps.
  • retractable gear, with suspention.
  • accessible cockpit, with sliding canopy.
  • adjustable cowl flaps
  • Ha-109 14 cyl engine with working pistons. (more on that later) 
  • removable access panels.

Design started in late 2017, with planing and drawing each of the systems and brand new construction methods. This being the first all metal project: effort was done in order to find the correct rivets, glue, paint, aluminum and ways the shape it:

An english wheel, specifically designed for this project.

A major challenge was finding an easy way to shape the stringers, and even though they barely look like aircraft material, they pass the requirements:

After all measurements were done, a collection of jigs were cut from cardboard. which in turn correspond to the aluminium counterparts:

We've cut the major structural parts from T6 6061 aluminium,  this material has a good stifness aswell as a good corosion resistance. Using Neodilium magnets as a vise to prevent scratching:

 

Its doesnt look like much yet, but many hours allready went into it. Most hardware such as hinges, seat mount, canopy rail, ect are from brass.

 

Gentlemen,                                                                                                          Cant wait to show you more next time.

XXXX,

LTC

 

 

 

 

 

  • Member since
    February, 2016
  • From: Ice coated north 40 saskatchewan
Posted by German Armour on Wednesday, July 10, 2019 5:24 PM

Amazing.

This is going to be amazing when finished!

Can't wait to see how it turn out!Toast

 Never give up, never quit, never stop modelling.Idea

 

  • Member since
    July, 2003
  • From: NEVER USE PHOTO BUCKET - IT'S A THREAD WRECKER.
Posted by disastermaster on Wednesday, July 10, 2019 7:48 PM

Super.

Looking forward to that engine.......

http://pic100.picturetrail.com/VOL351/12291693/21864322/413446218.jpg  http://cs.finescale.com/fsm/modeling_subjects/f/3/t/134935.aspx?page=11

  • Member since
    November, 2009
  • From: SW Virginia
Posted by Gamera on Wednesday, July 10, 2019 7:51 PM

Yeah, that's friggin' amazing!!!

"I dream in fire but work in clay." -Arthur Machen

 

  • Member since
    March, 2014
Posted by Graham Green on Thursday, July 11, 2019 2:02 AM

Brilliant, now this is what "Scratchbuilding" is all about, please keep posting your progress.

  • Member since
    March, 2014
Posted by Graham Green on Thursday, July 11, 2019 6:08 PM

What are you using to cut out the aluminium frames ?

  • Member since
    June, 2014
  • From: New Braunfels , Texas
Posted by Tanker - Builder on Sunday, July 21, 2019 9:10 AM

Okay!

Where's the little team of engineers and fabricators? WOW ! ! 

  • Member since
    March, 2019
Posted by the lukanian tool corp on Sunday, July 21, 2019 6:38 PM

Graham Green

What are you using to cut out the aluminium frames ?

 

 

Graham, 

To cut aluminium frames ( more then 0,25mm in thinckness), a fine jewelry saw is usually ok.

If required a drop of machining oil is to be added. More teeth on per blade for thicker, softer material. Less teeth for thinner, harder materials in more complicated shapes. 

Anything less then 0,25mm, or non-temp hardened aluminium is normally cut by scissors.

 

Hope this answers your question.

 

  • Member since
    March, 2019
Posted by the lukanian tool corp on Sunday, July 21, 2019 7:25 PM

All, 

 

Thanks for the compliments. I truly appreciatte your interest in this endeavour.

A special shoutout to Mr Shinpachi, who started a 3D rendering of a Ki44 a while ago.      I highly recomment taking a look at his work.

Anyway, time to follow our report on the Nakajima KI44:

The forward fuselage section, part 2

With the forward fuselage section allready outlined, i started with some interior componements:

The seat mounting frame

The seat itself

A mould for the Ho103 12,7mm machinegun

Its mount and ammo tray

The trothle quadrant

the To-Bi radio ( actually mounted in the tail sections).

complete with interior

 

As said before, a lot of new techniques are incorporated in the design. As such i started with the rudder ahead of schedule, mainly to gain experience in painting and covering with 0,25mm polystyrene, (in real life would have been fabric):

In order too ensure good connection with paint, i submerge the parts in a bath of caustic soda and immediately coat them with a zinc chromate pimer: The wood strip is where the covering attaches to the frame.

 

Finished:

Finally, a little teaser: 

The Ha109 14 cyl engine, to be test fitted any day now. ill dedicate and entire chapter on this engine at a later stage:

 

Gentlemen, as said before, thanks,

and till next time,

 

XXXX

 

  • Member since
    November, 2009
  • From: SW Virginia
Posted by Gamera on Monday, July 22, 2019 9:52 AM

Oh wow oh wow!!!

That work on the interior parts and the rudder are outstanding!!! 

"I dream in fire but work in clay." -Arthur Machen

 

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