3D Printed Servo Driven Tracked Rover W/suspensions (self Tightning Belts)

There are ment to be glued on some rubber square`s at the flat side of the tracks to make more friction, but thats optional.

Step 1: What You Need:

• Filament
• Glue
• 2 Self tapping screws with a wide head M4,2x25

  http://www.ebay.com/itm/M4-2-Phillips-Truss-Head-W...

• 2 Self tapping screws with a normal flathead M4,2x13

  http://www.ebay.com/itm/4-2mmx13mm-Thread-8-Phillips-Pan-Head-Self-Tapping-Screws-Fastener-100pcs-/351732086817?hash=item51e4ddb821:g:m4QAAOSwWntXNGun

  for the selftapping screws you can use screws for wood or plastic.
  they do not need to bee exact the length i linked to, those are just the length i used :)

• 6xM5x25 screws (do not use any countersink screws on this project)

  http://www.ebay.com/itm/10x-Durable-M5-Titanium-DI...

• Bearings 16x 5x10x4 MR105ZZ

  http://www.ebay.com/itm/10PCS-5x10x4mm-Miniature-B...

• 2x standard size servo w/mod for continus rotation (I used Towerpro 966MG)

  http://www.ebay.com/itm/MG996R-Metal-Gears-Digital...

• 6x ballpen springs (the stiffer type)

Step 2: STL Files

You need 33 track pieces per belt.

This is also at Thingiverse

Step 3: Print Settings

• Rafts: No

• Supports: No

• Resolution: 0.2

• Infill: 25%

Not all STL files are right side up, you may have to rotate some of them before you hit print.

Step 4: Assembly

1. Start by fasten the front to the middle part, use 2 self tapping screws and glue.
2. Fasten servo with servohorn tap heading forward.
3. Screw in the back parts thrught the hole in part.
4. center and fasten the servohorn to gear, fasten gear to servo.
5. screw on side skirts
6. use 3mm filament, burn the end and stump them flat. do this at both sides, make it tight.
7. Assembly bearings to back part, suspension pins and wheels.
8. Sand suspension pins to fit the chassi, they have to turn pretty free. use grease.
9. secure the back suspesion pin with a wide head screw.
10. Fasten wheels to suspesion pins.
11. Fasten back wheel (all wheels are assembled bearing turning out)
12. Set in the springs, easiest if you set it in the chassi first.
13. Assemble belt, use the filament trick. 33 tracks per belt. you can change belt tension by changing wheels to smaller or bigger ones. (depence on what springs you have)
14. assembly the last track when belt is stretched on place, and last chain over the gear, makes it easier
15. Ready to connect to RC, arduino or what ever you like :)