HEMTT M978 A4 TANKER RC

(Sorry for my english)
Please note the project is no longer supported.

This is a 1:12 version of the Oskhosh HEMTT M978 A4 military truck in the Fuel Tank version.

It is about 800mm long and about 200mm wide.

The idea for the original bodywork was born from GrabCad at the link: https://grabcad.com/library/hemtt-a4-tanker-1 and I thank its author.
The transmission instead was designed using the files of MRcrankyface and his truck TCTruck V4 https://www.thingiverse.com/thing:2935751 and from the Caj remix https://www.thingiverse.com/thing:3044113 which also I thank.
For assembly of the transmission please refer to these links.

The frame, the transmission, the axles are 100% infill molded, while the rest is 50%.
The bodywork uses 10 or 20% infill.
I tried to make all parts printable and trying not to exceed 15 hours of piece printing.
They are all glued with the cyano and activator, or using the M3 fixing screws.
 
I preferred to buy the shock absorbers, they are 50mm hole / hole.
For the engine I'm using a "surplus" engine, a 506 RPM gearbox for 540 engine is coming.
https://www.aliexpress.com/item/4000167788929.html?spm=a2g0s.9042311.0.0.2dc64c4dVAj66G

Tires are a small problem because the 1:12 scale would require 107mm tires such as those fitted, but they are very wide (42mm) and interfere with the steering angle, which is already very low in the real truck.
I am opting for tires of 96mm in diameter and about 36mm in width.
The supports for the shock absorbers are of two models, one for 105mm wheels, the other for 96mm wheels.

For the pin of the shock absorber supports I used a 6mm aluminum rod (Bricoman)

The cabin was painted without a "roof" and then glued.

I do not pretend to be precise in the reproduction, some details are not reproduced or partially reproduced for printing reasons.

The model requires a lot of printing time and precision in gluing.
All designs have been optimized for PLA printing.
The battery compartment is accessible from the engine side cooling grates.
The servos use a separate power supply, while only the signal pin goes to the receiver.

You will need:

• 30 bearings 10x15x4 https://www.aliexpress.com/item/33011085304.html?spm=a2g0s.9042311.0.0.59f24c4dviqjAE
• M3 screws and bolts of different sizes
• M3x6mm Hex Socket Screws for trasmission
• M3 threaded bar and uniball for servo connection

 I'm printing other components, tank and side boxes. (coming soon)