# Gearbox Selection

## General Information

The GreyT Elevator (Cascade) is compatible with any gearbox that has 1/2" hex output and mounting holes that are inline and 1/2" to 1" pitch from the output.

{% hint style="warning" %}
Gearboxes that do not meet these requirements will need custom mounting solutions.
{% endhint %}

<figure><img src="/files/uXyylrR5BnuZI32LwoZ2" alt=""><figcaption></figcaption></figure>

Extra mounting holes can be easily added through the use of 1" x 1" x 0.090" Aluminum Angle, or any other Aluminum Angle.

<figure><img src="/files/3uzvj6mMoTpttiSv8Hfl" alt=""><figcaption></figcaption></figure>

## WCP Single Stage Gearbox

An example gearbox that is used for the assembly steps in this manual is the [WCP Single Stage Gearbox](https://docs.wcproducts.com/welcome/gearboxes/wcp-single-stage-gearbox/).

<figure><img src="/files/JGqE66vdKR4pazAR7AAs" alt=""><figcaption></figcaption></figure>

The WCP Single Stage Gearbox Front Plate has a 2x2 grid of tapped holes and clearance holes that can be used for mounting. In the image below, the holes marked in green are tapped and the holes marked in orange are clearance for #10-32.

{% hint style="info" %}
The clearance holes marked in orange have a 3/8" c-bore that sits on the inside of the gearbox. If you intend to use these holes for mounting the gearbox, the Front Plate will have to be mounted before the gearbox can be assembled.
{% endhint %}

<figure><img src="/files/oUt1gAewF4fCFgoqCJyX" alt=""><figcaption></figcaption></figure>

For more information regarding gear reduction for the WCP Single Stage Gearbox, see the section labeled [Ratio Options](/welcome/greyt/greyt-elevator-cascade/general-info/gearbox-selection/ratio-options.md).


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