# Step 6-12

{% hint style="success" %}
Vibra-TITE VC-3 Threadmate ([Vibra-TITE](https://wcproducts.com/products/threadlocker)) is recommended on all bolts that thread into a tapped hole.
{% endhint %}

## Step 6

Bolt the two halves of the Gearbox together using the #10-32 x 1-3/4”L bolts. The image down below shows the bolt locations marked out in green.

{% hint style="info" %}
If you are assembling the 1-1/2” Base Gearbox, you can omit the 1/8”L spacers. For those configurations of the Telescope, those bolts will act as pins that hold the 1-1/2” Base Tube in place.
{% endhint %}

<img src="/files/tijPZY7cHMObNBaS6tDJ" alt="" width="563">

## Step 7A

{% hint style="warning" %}
The Drum is **not included** with the Base Gearbox. This Drum is completely optional and can be omitted.
{% endhint %}

The Drum must be cut to the correct length for the Gearbox Configuration you are assembling. The table down below shows the correct lengths for each base tube size.

All #10-32 bolts will thread into the 7/8” OD Roller Hubs after they have been pressed into the Drum. The Roller Hubs should be a press fit and may be pressed in with an arbor press.

{% hint style="info" %}
When assembling the drum, it is critical that the hexes for the roller hubs are lined up. In order to do this it is recommended to press one Hub in, and then line up the second Hub with the first Hub using any long piece of 1/2” hex.
{% endhint %}

| Base Tube Size | Drum Length |
| -------------- | ----------- |
| 1.5"           | 1.0625"     |
| 2"             | 1.5625"     |
| 2.5"           | 2.0625"     |
| 3"             | 2.5625"     |

<figure><img src="/files/wYrlfwM64Bvb1YqV3qcE" alt="" width="563"><figcaption></figcaption></figure>

## Step 7B

{% hint style="warning" %}
If the Drum was omitted in the previous step, the output shaft will need to be drilled out in order to tie the string here.

The 1/16"L Acetal Spacer will need to be printed, the file can be found below.
{% endhint %}

{% file src="/files/apey8QLhyzrkARbhefI5" %}

Slide the assembled Drum onto the output shaft. You may have to loosen the #10-32 x 3/8”L bolt in order to do this. Once the Drum is in place, check that the flange does not rub against the Gearbox Plate when the output shaft is spun by hand.

<img src="/files/QF5M2toJqLTXVFcari0m" alt="" width="563">

## Step 8

Bolt the two halves of the gearbox together. The bolt locations for the different Gearbox configurations are shown on the following section. When the Gearbox is fully assembled, make sure the Drum Flanges do not rub against the Gearbox Plates when the Output Shaft is spun by hand.

{% hint style="info" %}
Unless otherwise specified, the bolt locations are the same across both the Non-Flipped and Flipped configurations.
{% endhint %}

<img src="/files/g2fhjIxOnNWAgIexlIaj" alt="" width="563">

### Bolt Locations

{% tabs %}
{% tab title="1-1/2" Flipped Gearbox" %}

### 1-1/2” Base Gearbox

The images shown below mark out the bolt locations in green, blue, and orange. These configurations of the Gearbox both use #10-32 x 2”L bolts and 1-1/2”L spacers.

{% hint style="info" %}
The 1-1/2” Base Gearbox does not require the 1/8”L spacers installed in Step 6.
{% endhint %}

<figure><img src="/files/8sl4yMmJeJfe0jM1uzkd" alt="" width="563"><figcaption></figcaption></figure>
{% endtab %}

{% tab title="2" Flipped Gearbox" %}

### 2” Base Gearbox

The images shown below mark out the bolt locations in green, blue, and orange. These configurations of the Gearbox both use #10-32 x 2-1/2”L bolts and 2”L spacers.

{% hint style="info" %}
The 2” Base Gearbox does require the 1/8”L spacers installed in Step 6.
{% endhint %}

<figure><img src="/files/qJ2gNXlNEJKCQgrLlSpV" alt="" width="563"><figcaption></figcaption></figure>
{% endtab %}

{% tab title="2-1/2" Flipped Gearbox" %}

### 2-1/2” Base Gearbox

The images shown below mark out the bolt locations in green, blue, and orange. These configurations of the Gearbox both use #10-32 x 3”L bolts and 2-1/2”L spacers.

{% hint style="info" %}
The 2-1/2” Base Gearbox does require the 1/8”L spacers installed in Step 6.
{% endhint %}

<figure><img src="/files/NzZSuDDjgFdq5M8Ab7mA" alt="" width="563"><figcaption></figcaption></figure>
{% endtab %}

{% tab title="3" Flipped Gearbox" %}

### 3” Base Gearbox

The images shown below mark out the bolt locations in green, blue, and orange. These configurations of the Gearbox both use #10-32 x 3-1/2”L bolts and an overall 3”L spacer stack up.

{% hint style="info" %}
The 3” Base Gearbox does require the 1/8”L spacers installed in Step 6.
{% endhint %}

<figure><img src="/files/dT9647laTu5rVtELdEOt" alt="" width="563"><figcaption></figcaption></figure>
{% endtab %}
{% endtabs %}

## Step 9

This step will cover the mounting of either the Friction Brake or the Ratchet & Pawl.

{% hint style="info" %}
This step can be skipped if you plan on using the Telescope without the Ratchet & Pawl or WCP Friction Brake.
{% endhint %}

{% tabs %}
{% tab title="Friction Brake Mounting" %}
To mount the Friction Brake, first bolt the Break Pad to the Outside Gearbox Plate, then mount the Piston Mount, and finally install the Piston with Cone.

{% hint style="info" %}
Piston and #6-32 x 1-1/4”L Bolt are not sold by WCP.
{% endhint %}

<img src="/files/WlUPZxJGguCTYN8OiFaR" alt="" width="563">
{% endtab %}

{% tab title="Ratchet & Pawl Monting" %}
To mount the Ratchet & Pawl, first drill and tap to 5/16-18 the hole the Pawl mounts to. Then mount the Ratchet & Pawl using the parts shown in the image down below. Finally, drill out the mounting hole at the end of the piston with a #18 drill bit and mount the piston once everything else is in place.

{% hint style="info" %}
Piston and #8-32 x 1”L Bolt are not sold by WCP.
{% endhint %}

{% hint style="warning" %}
All Spacers found below will need to be printed, all files can be found below.
{% endhint %}

{% file src="/files/apey8QLhyzrkARbhefI5" %}

{% file src="/files/TebIr3TqRT9odAfYAWT3" %}

{% file src="/files/w2t8GBUeu4bdj6P53hN7" %}

<img src="/files/8Pe6L8l2ewfve4CbWVnd" alt="" width="563">
{% endtab %}
{% endtabs %}

## Step 10

Install the 3D Printed Mag Encoder Mount using two #10-32 x 1/2”L bolts. To install the Mag Encoder, remove the board from the case and fit it into the cutout on the 3D Printed Mag Encoder Mount. Use the mounting bolts from the Mag Encoder to attach the sensor. The CANcoder can be used as a drop in replacement.

<img src="/files/Jb6TeQzszWvB8dvKkLKe" alt="" width="563">

## Step 11

Apply  [Lucas Red "N" Tacky](https://www.lucasoil.com/product/red-n-tacky-grease/) grease to all gears after final assembly to ensure smooth operation and reduce wear during use. Once greased, rotate and spin the shaft to distribute the grease evenly before powering up.

After running gearbox for 15-30 minutes, reapply a light amount of grease. Reapply as needed.


---

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