Battery Box & Hitch Mount for BRX01 AWB

What This Is

You like scale models and semi trailers? Then you’ve come to the right place!

The Truck (or, the link version)

The Trailer  (or, the 40′ version)

What’s Included

The zip file below contains:

• Battery Box.stl
• Battery Lid.stl
• Trailer Hitch Base.stl
• Read Me.txt

Hardware Needed

• 4x M2.5 10mm socket head screws (Hitch Base to chassis)
  4x M3 14mm button head screws (hitch plate to Trailer Hitch Base)
  2x M3 14mm button/flat/socket head screws (Hitch mount to battery box)
  2x M3 8mm to 12mm counter-sunk screws (Battery box to chassis)
  1x M2 6mm button head screw (Battery Lid latch)
  1x M3 6mm to 8mm button/flat/socket head screw (Battery box latch receiver)
  8x M1.5 or M2 6mm screws (for Battery box hinges)
  2x little hinges to fix box and lid
  1x Trailer Hitch Plate*

  *Hitch seems only to be on AliExpress. Here are 3 stores with the same part to fit my mount design:
  https://s.click.aliexpress.com/e/_okrN0ob
  https://s.click.aliexpress.com/e/_oBYEOIn
  https://s.click.aliexpress.com/e/_oEXzQJv

How to Print

I printed in PLA+, though PLA, PETG and other rigid filaments should be fine. I’d suggest these settings:

– 0.4mm nozzle (or bigger)
– 0.24mm layer size (I used 0.36mm with my 0.6mm nozzle)
– 3 wall width (or wall or shell layers)
– 25% infill, cubic (15% minimum)
– No supports needed except for the Battery Lid piece
– Print in orientation as files load into slicer. No rotation should be needed.

Installation

1. Print per the above settings.
2. Screw the hinges onto the Battery Lid and then the Battery Box (8x M1.5 or M2 6mm screws – whatever the hinges came with is fine too)
3. Screw the Battery Box onto the chassis rails (2x M3 8mm to 12mm counter-sunk screws)
4. Screw the Trailer Hitch Base onto the chassis (4x M2.5 10mm socket head screws)
5. Screw the trailer hitch plate onto the Trailer Hitch Base (4x M3 14mm button head screws)
6. Screw the Trailer Hitch Base to the Battery Box, inserting the screws from the rear (Hitch Base) and forward into the Battery Box. They should end up flush inside the box, with no metal protruding into the box. Be careful! (2x M3 14mm button/flat/socket head screws)
7. Get a paper clip and bend it into a latch shape, like an ‘S’. You want the lid screw to secure it always, and to have it latch shut onto the box screw below it.

Thanks and enjoy this one!
-Craig
RC-TNT.com
(info@rc-tnt.com)