# Cartridge Details

## Cartridge Details 

### Actual Cartridge Gear Ratios

| Part Number | Product Name                 | Nominal Gear Ratio | Actual Gear Ratio |
| ----------- | ---------------------------- | ------------------ | ----------------- |
| REV-41-1601 | UltraPlanetary Cartridge 3:1 | 3:1                | 84:29 (2.89:1)    |
| REV-41-1602 | UltraPlanetary Cartridge 4:1 | 4:1                | 76:21 (3.61:1)    |
| REV-41-1603 | UltraPlanetary Cartridge 5:1 | 5:1                | 68:13 (5.23:1)    |

### Final Gear Reduction For Two Stage Gearboxes

Nominal gear ratios are used to reference the product name for ease of use for the following chart. For actual gear ratios please reference the [Actual Cartridge Gear Ratios Table](https://docs.revrobotics.com/rev-crossover-products/ultraplanetary/broken-reference).

<figure><img src="https://1166281274-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-ME3KPEhFI6-MDoP9nZD%2Fuploads%2Fj6i3N5VlrPHY6jjDRKZc%2Fimage.png?alt=media&#x26;token=346ab227-7d41-474c-9c85-03fa58b90db3" alt=""><figcaption></figcaption></figure>

{% hint style="warning" %}
When building your gearbox make sure the highest gear reduction is closest to the motor. Asterisked cells are omitted as they have a lower gear reduction closer to the motor.
{% endhint %}

### Final Gear Reduction For Three Stage Gearboxes

Nominal gear ratios are used to reference the product name for ease of use for the following chart. For actual gear ratios please reference the [Actual Cartridge Gear Ratios Table](https://docs.revrobotics.com/rev-crossover-products/ultraplanetary/broken-reference).

<figure><img src="https://1166281274-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-ME3KPEhFI6-MDoP9nZD%2Fuploads%2FPOMzF0PSvmU3HvUWvJWf%2Fimage.png?alt=media&#x26;token=7e2287cd-8f9d-477c-9f5f-b37566ce3399" alt=""><figcaption></figcaption></figure>


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.revrobotics.com/rev-crossover-products/ultraplanetary/cartridge-details.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.