> For the complete documentation index, see [llms.txt](https://docs.plummerindustries.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.plummerindustries.com/bumper-mounts/overview.md).

# Component Overview

The Plummer Industries Bumper Mounts are based on a ball lock mechanism that requires activation for both installation and removal to prevent accidental detachment and provides a tensile strength of over 500 pounds. They are 

<table data-card-size="large" data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-cover data-type="image">Cover image</th></tr></thead><tbody><tr><td>Horizontal</td><td>Mounted on a bumper that is removed with a horizontal movement.</td><td><a href="https://270029800-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F7vOj1wNOe9PSYVrgrYTW%2Fuploads%2FFZPEPbAEB0SwWcldK3bT%2FBumper_Attachment_Assembly_2022-Sep-23_10-27-56PM-000_CustomizedView28512147144.png?alt=media&amp;token=64f801ce-a8ae-4059-a989-9b0ee9dedc66">Bumper_Attachment_Assembly_2022-Sep-23_10-27-56PM-000_CustomizedView28512147144.png</a></td></tr><tr><td>Vertical</td><td>Mounted on a bumper that is removed with a vertical movement.</td><td><a href="https://270029800-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F7vOj1wNOe9PSYVrgrYTW%2Fuploads%2F2qAAOFf79teW750e52oy%2FBumper_Attachment_90_2022-Sep-23_10-44-53PM-000_CustomizedView923039251.png?alt=media&amp;token=e14cfad3-8aca-4ed0-93b7-92a805844646">Bumper_Attachment_90_2022-Sep-23_10-44-53PM-000_CustomizedView923039251.png</a></td></tr><tr><td>Sockets</td><td>Mounted on the robot for a bumper mount to attach to. </td><td><a href="https://270029800-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F7vOj1wNOe9PSYVrgrYTW%2Fuploads%2FRRZ1Basx0tMbygcTN2wS%2FBumper_Attackment_Socket_2022-Oct-01_03-17-24PM-000_CustomizedView5896022017.png?alt=media&amp;token=5a980fb1-8511-460b-952d-53e34f6de907">Bumper_Attackment_Socket_2022-Oct-01_03-17-24PM-000_CustomizedView5896022017.png</a></td></tr><tr><td>Slide Pins</td><td>Mounted to a bumper to help locate and hold in place. </td><td><a href="https://270029800-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F7vOj1wNOe9PSYVrgrYTW%2Fuploads%2Fp8zv7j9IXHt91r3EZfnN%2FBumper_Slide_Bolt_2023-Jul-20_12-28-50AM-000_CustomizedView2841995010.png?alt=media&amp;token=15990247-2a5d-48dd-8bfd-9e6f66acf4b7">Bumper_Slide_Bolt_2023-Jul-20_12-28-50AM-000_CustomizedView2841995010.png</a></td></tr><tr><td>Receivers </td><td>Mounted on the robot for a slide pin to locate to. </td><td><a href="https://270029800-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F7vOj1wNOe9PSYVrgrYTW%2Fuploads%2F3YRYmy7UfMIiNp9iNRXb%2FBumper_Slide_Reciever_Inside_Tube_2023-Jul-20_01-08-13AM-000_CustomizedView32923949098.png?alt=media&amp;token=c56eb32d-a4f5-4131-b31a-721cf5707059">Bumper_Slide_Reciever_Inside_Tube_2023-Jul-20_01-08-13AM-000_CustomizedView32923949098.png</a></td></tr><tr><td></td><td></td><td></td></tr></tbody></table>

**The vertical system** is for teams that use the two C’s or ring design bumpers. Just reach over the bumper and press an easy to access button. Steel brackets are available to support the corners of these types of bumpers. Vertical Bumper Mounts provide the same quick release but without the need for a tool. **Adjustable** versions are available for when more than one mount is on a bumper segment.&#x20;

**Slide Pins/Receivers** are pieces of hardware to provide locating features for bumpers. They can be used in conjunction with both systems to minimize the number of mounts required.&#x20;

**These systems can be mixed and matched to meet your team's specific needs.**&#x20;

### Included Mounting hardware

We include the hardware we recommend for mounting the bumper mounts to the wood of your bumper. We do not include hardware to mount the robot side of the system (Sockets and receivers) as teams vary in their choice of mounting methods.&#x20;

## Design Principles

Our Bumper Mounts were designed for and tested on robots during the 2022 single day event format. Where match turn arounds were in the 4-7 minute timeframe and every second of pit time mattered. The 1-2 minutes saved from changing bumpers makes a big difference in those quick turn arounds. &#x20;

### No unlock when under load

When the bumper mount is under tension the "button" becomes harder to press. This means when lifting the robot or pulling by a bumper the mechanism cannot be unlocked by an accidental bump.&#x20;

### Steel

When designing the bumper mounts we went with 4140 steel for the pins and sockets for its high strength and toughness.&#x20;

### Weight on bumper

The system was designed with the FRC rules in mind. The "heavy" components are part of the bumper assembly and do not count towards your robot weight limit.&#x20;

### Interchangeability

The components in the system are designed to be used in any way your team needs. All of the mounts fit all of the sockets and can be mixed and matches&#x20;

**These systems can be mixed and matched to meet your team's specific needs.**&#x20;

### Coatings

All steel parts are Black oxide coated to hold oil and prevent rust.

All aluminum parts are kept uncoated.&#x20;

{% hint style="info" %}
Packaging note. Steel parts will arrive in Blue VCI bag to prevent rust. Parts will be oily and will leave residue on clean surfaces.  Aluminum parts may still have coolant residue which presents as oil on the surface of the part. The coolant residue is water soluble and can be rinsed off with water if desired.&#x20;
{% endhint %}

### Non Tapped holes

Just as in most of our products we do not tap the holes in these parts. This allows teams to drill the holes out to the size they need and tap for the sizes they want. &#x20;


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