WARNING

This version of the M548 is not 100% finished. Some parts such as winch, interiors, machine gun or the hinges for the front doors are not made. The hole project has been developed using FreeCad and at this point, it has become too large and complex and some of the files has been corrupted. This makes me really hard to redesign, upgrade and develop new parts. The bad news is that this version won't be updated anymore The good news is that I’m working in a new version using a more powerful CAD software . I will redesign the entire model and include important upgrades in the gearbox, tracks, sprockets and It will include much more details such as opening front doors interiors, winch and machine gun (among other things). This new version will also include more detailed building guide with bill of materials and everything you need to build it step by step. However with the already published files, you will always be able to build a fully functional M548 as you can see running in the youtube videos below. If that enought for you, that's PERFECT! I will inform you as soon as I have everything ready to publish the new version. Thank you very much for your comprehension and patience! Stay tunned!

INTRODUCTION

This is the Wheels and Suspension for the M548 RC 1/10 scale model. I've tested the model and, although it is not finished yet, it seems to work propperly. You can see it working in the following links:

1. M548 Test 1.

2. M548 Test 2.

3. M548 Test 3.

4. M548 Test 4.

ASSEMBLY

FreeCAD

I'm very proud to say that the entire design has been done using FreeCAD opensource software. I must thank all the developers. Without you, this project wouldn't be possible!! For this particular case, I highly recommend to download FreeCAD in order to see how to assemble everything. This pieces are a litte bit complex and the assembly files will help you a lot to understand how to come all the parts togetherIf you want to download this software for free and visualize the assemble, you can do it in the following link:

FreeCAD official page FreeCAD.

It is important to take into account that some parts have left side and right side. This is very important to build the model correctly. In this case, all the parts of this design can be assembled just using bolts and nuts and no glue is needed at all.

Hardware

In order to assemble all the parts of the suspension and wheels, you will need the following stuff:

• 12 X 10mm M3 bolt (ISO7046)
• 14X 30mm M3 bolt (ISO7046)
• 120 X M3 nut (ISO4032)
• 12 X M4 nut (ISO4032)
• 12 X 25mm M4 (ISO4014)
• 24 X 6700ZZ bearings

You will also need 14 springs. I found them in the local store and they have this characteristics: Wire diameter: 0.8 mm Outer diameter: 8 mm Length: 35 mm (you can buy longer springs and cut them) As you can see in the photos, the springs assembling mechanism is very simple. Just put the bolt inside the spring and use the washer to hold it in the correct position. Then put the piece "spring barrette" inside the "spring holder" and keep the spring in the desired position.

PARTS

M548 Chassis.

M548 Gearbox.

M548 Tracks.

M548 Front Body.

M548 Central Body.

M548 Rear Body.

M548 Rear door.