Fork me on GitHub

Project Notes

#759 Mitsubishi G3M3 Nell

Building the Mitsubishi G3M3 Nell from Hasegawa in 1:72, motorized and mounted in-flight for the #risingsungb.

Build

Here’s a quick demo..

clip

Notes

The Mitsubishi G3M (九六式陸上攻撃機, Type 96 land-based attack aircraft “Rikko”; Allied reporting name “Nell”) was a long-range, land-based bomber developed by Mitsubishi for the Imperial Japanese Navy in the 1930s. Designed under the guidance of Sueo Honjo, it was Japan’s first modern twin-engine bomber, noted for its advanced aerodynamic design, which prioritized range and speed over armor and defensive armament. Initially conceived as a reconnaissance and torpedo bomber, the G3M played a significant role in the early stages of World War II.

The G3M first saw combat during the Second Sino-Japanese War in 1937, where it was used for bombing raids over Chinese cities. Its most famous moment came in December 1941, when “Nells” from the Mihoro and Genzan Kōkūtai helped sink the British battleships HMS Prince of Wales and Repulse off the coast of Malaya. This was the first time capital ships were sunk purely by air power while at sea.

Despite its early successes, the G3M was gradually outclassed by more modern aircraft, such as its successor, the Mitsubishi G4M “Betty.” By 1943, the G3M was mostly relegated to transport and training roles, though it continued to serve until the end of the war. A total of around 1,048 units were built before production ceased.

The Kit

The Hasegawa Kit No. 02218 1:72 is a 2016 boxing of the original 1997 tooling from Hasegawa of the Mitsubishi G3M3 Type 96 Land-Based Attack Aircraft Model 23 ‘Kanoya Flying Corps’.

I found this kit in Hobby Mate ホビーメイト Osaka for ¥2,720 - a true goldmine of a store for kits especially from the 1990’s and 2000’s.

risingsungb_nell

I also picked up the Eduard mask set CX114 - well worth it, this plane is quite a glasshouse!

The kit has schemes depicting craft from the Kanoya Air Group:

  • Kanoya Naval Air Group (2nd generation) aircraft “Kaya-455” 1944
  • Kanoya Naval Air Group (2nd generation) aircraft “Kaya-459” 1944

On 30 January, the 751st Air Group bombers were involved in the Battle of Rennell Island, where they were led by Lieutenant Commander Kazuo Nishioka and they torpedoed the cruiser Chicago. In April 1943, the unit participated in Operation I-Go. By mid-1943, the high rate of attrition forced the unit to reduce the number of aircrew per bomber from seven to five, which typically meant there was no co-pilot.[1] 253rd Air Group fighters saw heavy fighting during the defence of Rabaul in late 1943 and early 1944. After US carrier force raided Truk Lagoon in February 1944, all air units were withdrawn from Rabaul area, including 751st Air Group.

Paint Scheme

Feature Color Recommended Paint Used
  Black C2, H2  
torpedo body Silver C8, H8  
propeller front, spinner Silver C8, H8 SM208
upper fuselage IJN Green (Nakajima) C15, H36 H36
guns, engine Steel C28, H18 H18
torpedo nose Flat Black C33, H12 H12
  Clear Red C47, H90  
  Clear Blue C50, H93  
leading edges Orange Yellow C58, H24 H24
exhaust Burnt Iron C61, H76 H76
interior, wheel wells Cockpit Color (Nakajima) C127  
lower fuselage Grey Green C128 H336
propeller rear Propeller Color C131 H47
  Tire Black C137, H77  

Paint Scheme - Figures

The trusty Japanese Navy Airmen Set Hasegawa No. X72-16 1:72 set comes out…

Feature Color Recommended Paint Used
goggle frames Silver C8/H8  
goggle frames (alt) Copper C10/H10  
goggle straps Sandy Brown C19/H66  
webbing/life jacket Dark Earth C22/H72 70.921 English Uniform
  Flat Base C30/H40  
helmet Red Brown C41/H47  
  Mahogany C42/H84 70.846 Mahogany Brown
helmet inner Tan C44/H27  
  Flesh C51/H44  
scarf Flat White C62/H11  
boots Semi gloss black C92  
  Mitsubishi Cockpit Color C126  
flight suit and gloves   C22/H72 (70%) + C42/H84 (30%)  

Build Log

I’ve joined the #risingsungb organised by @adastra_models for one of my next projects. I’m building this new pop of the old Hasegawa Mitsubishi G3M3 Type 96 九六式陸上攻撃機 (Nell). So far I’ve done a quick in-flight conversion and motorised props and it is going together like a dream: the fit is remarkable for a 1997 tooling.

risingsungb_nell

Cockpit and Main Sub-assembly Preparation

Modifications for in-flight were quite straight-forward, although not specifically catered to by the kit.

build01a

The Eduard mask set CX114 is well worth it, given the expanse of glass in this plane..

build01b

Testing the motorised engines..

build01c

All the main parts prepared for fuselage assembly. I didn’t bother with much interior detail as it won’t be very visible

build01d

wheels up mod

build01e

The plane will be mounted with 1.5mm annealed florist’s wire from Knorr Prandell (secured with hot glue inside the fuselage)

build01f

build01g

Crew

Not sure if the crew was normally 5 or 7 (sources differ), but I’m doing a selection to crew the ship…

These are the trusty Japanese Navy Airmen Set Hasegawa No. X72-16 1:72 .. always seem to turn up in my builds for some reason!

build02a

build02b

build02c

Assembly, Painting and Finishing

build03a

build03b

build03c

build03d

build03e

build03f

build03g

build03h

build03i

build03j

build03jb

build03jc

build03k

build03kb

Electronics

With the micro-motors I’m using, the correct motor polarity to got the props to turn in the right direction is:

  • Red wire - +3V
  • Blue wire - GND

I’m using a simple 555 timer circuit to provide variable speed PWM control. There’s just enough oomph in 3V batteries (2xAAA) to power the props.

Note:

  • I’ve put a flyback diode on each motor (mounted inside the plane actually). This was because I originally intended to drive the motors independently. As-is, the duplication is redundant, but it does keep options open for independent drive in the future.

bb

schematic

bb_build

A quick protoboard layout

build05a

Circuit boards completed…

build05b

And installed in the frame…

build05c

The G3M3 Nell (九六式陸上攻撃機) was a long-range, land-based bomber developed by Mitsubishi for the IJN in the 1930s. It was Japan’s first modern twin-engine bomber, noted for its advanced aerodynamic design, which prioritized range and speed over armor and defensive armament. Initially conceived as a reconnaissance and torpedo bomber, the G3M played a significant role in the early stages of World War II.

This is the 2016 boxing of the original 1997 tooling from Hasegawa in 1:72, and still an amazing kit to build. I’ve motorized the props and mounted in-flight. I built this as part of the #risingsungb organised by @adastra_models.

The only problem with this kit is that it is getting a little on the large size to be photographed easily - apologies for the focus issues and cluttered background in some of the shots.

risingsungb_fin1

build06a

build06b

build06c

build06d

build06e

build06f

Added to my “wall of flight” (getting a little full now).

build07a

build07b

Credits and References

About LEAP#759 scale modelsCraftIJN
Project Source on GitHub Project Gallery Return to the LEAP Catalog

This page is a web-friendly rendering of my project notes shared in the LEAP GitHub repository.

LEAP is just my personal collection of projects. Two main themes have emerged in recent years, sometimes combined:

  • electronics - usually involving an Arduino or other microprocessor in one way or another. Some are full-blown projects, while many are trivial breadboard experiments, intended to learn and explore something interesting
  • scale modelling - I caught the bug after deciding to build a Harrier during covid to demonstrate an electronic jet engine simulation. Let the fun begin..
To be honest, I haven't quite figured out if these two interests belong in the same GitHub repo or not. But for now - they are all here!

Projects are often inspired by things found wild on the net, or ideas from the many great electronics and scale modelling podcasts and YouTube channels. Feel free to borrow liberally, and if you spot any issues do let me know (or send a PR!). See the individual projects for credits where due.