This is Direct Feed Titan Extruder X-Carriage designed to work the the Tevo Tarantula.

This was designed to work specifically with an E3Dv6 Hotend, E3D Titan Extruder, and a Nema 17 Pancake Stepper motor (Link below to dimensions and specs)

Features:

• Extruder Direct Feed setup lowered to clear the 2040 Tarantula X Rail
• Currently support standard E3D Heatblock BLTouch, SN04 (Stock) and Round Proximity Sensors
• 3 Wheeled design to allow the stepper motor drop to the correct height and allows easier tensioning of wheels against X beam
• Reinforcement beams with integrated cable tie slots (belt lock version)
• 2 Versions:

  X Belt locking mechanism (by thingirob) - eliminate the use of zip ties to secure X belt
  X Belt Fine Adjustment Version (modeled from Ulmenkott) - provides fine adjustment of X belt tension

IMPORTANT: Because the endstop was relocated, you will need to make a few changes in your firmware and hardware. The following changes were done using Marlin 1.1 RC7 & MKS Base 1.2:

1. Uncomment define USE_XMAX_PLUG
2. Changed X_HOME_DIR from -1 to 1
3. Moved the connector on the MKS board from -X to +X

ADDITIONAL: May need this as well. Thanks xfirax for the heads up!

define X_MAX_ENDSTOP_INVERTING false // set to true to invert the logic of the endstop

X & Y Probe Offset(s):

BLTouch:
X Probe offset from nozzle: 20mm
Y Probe offset from nozzle: 65mm

also add (as suggested by ElChangoGuero)
define NOZZLE_X +200

SN04:
X Probe offset from nozzle: 20mm
Y Probe offset from nozzle: 75mm

Round:
X Probe offset from nozzle: 20mm
Y Probe offset from nozzle: 90mm

NOTE: I've included the native 123D Design formats so you can modify if required / desired. Keeping this open source to hopefully encourage improvements and new designs.

In development:

• 8.5mm spacer for Volcano Heatblock
• Integrated Layer Fan mount & Fan to eliminate the need for the E3D Hotend Fan to be used as a mounting point

Special Thanks: This is a remix of thingirob's Tevo Tarantula Modular X Car Basic, e3d 2x
(http://www.thingiverse.com/thing:1438795) as well as using Ulmenkott belt tensioner idea (http://www.thingiverse.com/thing:1640682). Without their designs it would of been difficult to create this remix.

Relavant Links:
E3Dv6 Hotend - http://e3d-online.com/E3D-v6
E3D Titan Extuder - http://e3d-online.com/Titan-Extruder
Nema 17 Pancake Motor - http://www.omc-stepperonline.com/nema-17-bipolar-step-motor-35v-1a-13ncm184ozin-17hs081004s-p-101.html