Voron Trident Horizontal Umbilical Chain for A4T with Galileo2 and Orbiter – RTO Edition V2.1

https://www.youtube.com/watch?v=ime0QRmLQDA

This mod was designed and optimized specifically for the following configuration:

• Toolhead: A4T

• Carriage: XOL

• Extruders: Galileo 2 (WWG2)

A beta version of the mount for Orbiter extruders is also included, but it has not been tested yet.

All geometries, clearances, mounting heights, and cable-routing paths were modeled using this combination as the design reference. The goal is to achieve a well-aligned system with smooth chain movement, good rigidity, and proper cable management within a horizontal umbilical setup for the Voron Trident.

This adaptation takes inspiration from certain design and cable-management principles found in printers such as the Bambu Lab P1 and X1, applying the necessary adjustments to fit the A4T/XOL/WWG2 combination.

1 — Chain Mount Position

The chain anchor point on the CANbus board mount is shifted slightly to the right relative to the umbilical connector. This choice was made to improve cable behavior during long-term use.

Cable Fatigue Prevention

This offset creates a short flexible segment between the chain connector and the umbilical connector.
That segment acts as a relief zone, allowing torsional forces to distribute gradually before reaching the CANbus board connector. This reduces direct stress on the connector and lowers the risk of cable fatigue.

During testing, direct alignment between both connectors caused visible torsion in the cable, transmitting unwanted forces to the board. With the offset, the cable moves with more freedom and experiences fewer accumulated stresses, resulting in a more stable and safer long-term solution.

2 — Cable Type and Installation in Nitehawk Systems

All testing was carried out using a Nitehawk 36 board.

Cable management was noticeably easier when using the Nitehawk SB cable, as its final section is unreinforced and exposes the internal umbilical wires, offering greater flexibility.

In contrast, the fully reinforced Nitehawk 36 cable is stiffer and less suitable for the bottom-up routing used in this horizontal setup (different from the downward routing typical of a Voron 2.4).

Umbilical Installation

In the current configuration, one zip-tie are used, placed near the connector:

Zip-tie must be firmly tightened to fully secure the assembly and prevent torsional forces from reaching the connector area.

The upward cable segment remains necessary, as it provides the required flexibility for the loop to absorb torsional movements in the connector area.

Compatibility Notes

This system is designed around the geometry of the WWG2 extruder, mounted on an A4T toolhead and using the XOL carriage.
This determines the chain height, the anchor position, and the umbilical path.

About the Chain Used in This Mod

A printed chain or an injection-molded plastic chain may be used.
Testing was carried out using a lightweight Bambu-style chain available on AliExpress.

For a 250 mm Trident, one full chain plus several links from a second kit were required.

Estimated requirements by printer size:

250 mm: 2 chains (tested)

300 mm: 2 chains

350 mm: likely 3 chains

Only the following parts from the kit are used:

The chain

The final link, which allows the chain to be mounted to the frame using two M3 screws

All other parts included in the kit are not used in this mod.

BOM – Bill of Materials

-Printed Parts

All printed parts included in the project (STLs).

-Cable Chain

Lightweight Bambu Lab P1/X1-style chain
https://es.aliexpress.com/item/1005005959575559.html

-Threaded Inserts

4 × M3 inserts

Outer diameter: 5 mm

Length: 4 mm

2 for the Nitehawk board mount

2 for attaching the chain to the rear frame mount

2 × M2 inserts

Outer diameter: 3 mm

Length: ~3 mm

Used for the chain pivot system.

-Screws

2 × M2 × 8 mm screws
For securing the chain pivot mechanism.

4 × M3 × 8 mm round-head screws

2 for mounting the Nitehawk board bracket to the extruder

2 for mounting the rear chain bracket to the frame

4 × M3 × 8 mm screws
2 for securing the Nitehawk board to its mount, and the other 2 screws for attaching the rear piece to the frame-Nuts

2 × M3 T-nuts
For securing the rear chain mount to the aluminum extrusion.Installation Guide

Assembly Guide

1º - M3 heat-set insert, 5 mm outer, 4 mm length

2º - M2 heat-set insert, 3 mm outer, 3 mm length

3º - M3 round-head screws, 8 mm length

4º - Insert the umbilical cable through the inside of the static pivot base.

5º - Use the M2 × 8 mm screws to secure the static pivot base to the toolhead mount

6º - In the next photo, you can see the correct position for the upper zip-tie, with the zip-tie head placed on the left side as shown in the image. In this step, we will secure the umbilical cable at the end of the loop, and fasten the umbilical cable connector to the printed part.

7º - In the next photo, you can see the full system is shown fully assembled

8º - This is the part that connects the chain to the printer frame.

The two screws used to attach the part to the aluminum extrusion are 2 × M3 × 8 mm screws together with 2 T-nuts.
The two screws that secure the chain to this part are 2 × M3 × 8 mm round-head screws, which thread into two M3 heat-set inserts (5 mm outer diameter, 4 mm length) installed in the printed piece.

Updates

03-12-25 V2.1

1º-Adjustment of the chain frame mount and addition of a zip-tie support for the umbilical cable.

2º-Smoothing of the inner edges on the pivoting part to prevent rubbing against the umbilical cable