# Final Assembly

### Bracket Pre-Loading Parts Required

| **PART NUMBER**                                         | **DESCRIPTION**                | **QTY.** |
| ------------------------------------------------------- | ------------------------------ | -------- |
| [REV-41-1305](https://www.revrobotics.com/rev-41-1305/) | 15MM PLASTIC 90 DEGREE BRACKET | 12       |
| [REV-41-1359](https://www.revrobotics.com/rev-41-1359/) | M3 X 8MM HEX CAP SCREWS        | 60       |
| [REV-41-1361](https://www.revrobotics.com/rev-41-1361/) | M3 NYLOC NUTS                  | 60       |

### Pre-Loading Brackets Assembly Steps

|                                  |                                                                                                                                                                                            |
| -------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| ![](/files/-Me5nM5SBaMQkdzoHk_0) | <p>Take a bracket and finger start one Hex Cap Screw and Nyloc Nut per hole.</p><p></p><p><strong>Note:</strong> The side of the bracket with “ribs” must have the Hex Cap Screw head.</p> |
| ![](/files/-Me5m4t_7RT8O5CoypiN) | <p><strong>PRE-LOADED BRACKET COMPELTE</strong></p><p>Repeat this step until you have twelve Pre-Loaded Brackets.</p>                                                                      |

### Final Assembly Parts Needed

| **PART NUMBER**                                                                                                           | **DESCRIPTION**               | **QTY.** |
| ------------------------------------------------------------------------------------------------------------------------- | ----------------------------- | -------- |
| [REV-41-1767](https://www.revrobotics.com/rev-41-1767/)                                                                   | 45MM X 15MM C CHANNEL - 248MM | 1        |
| [REV-41-1432](https://www.revrobotics.com/rev-41-1432/)                                                                   | 15MM EXTRUSION - 420MM        | 2        |
| [REV-41-1329](https://www.revrobotics.com/rev-41-1329/)                                                                   | THROUGH BORE BEARING - LONG   | 4        |
| [REV-41-1324](https://www.revrobotics.com/rev-41-1324/)                                                                   | 3MM SPACER                    | 4        |
| [REV-41-1327](https://www.revrobotics.com/rev-41-1327/)                                                                   | SHAFT COLLAR                  | 6        |
|                                                                                                                           | **ASSEMBLIES**                |          |
| [ASSEMBLY 3](/duo-build/ftc-starter-kit-mecanum-drivetrain/drive-shaft-assembly.md#mecanum-wheel-assembly-parts-required) | MECANUM WHEEL ASSEMBLY        | 4        |
| [ASSEMBLY 7](/duo-build/channel-drivetrain-build-guide/drive-rail-assembly.md)                                            | DRIVE RAIL ASSEMBLY           | 2        |
| [ASSEMBLY 8](/duo-build/ftc-starter-kit-mecanum-drivetrain/final-assembly.md#bracket-pre-loading-parts-required)          | PRE-LOADED BRACKET            | 12       |

### Final Assembly Steps&#x20;

|                                                                     |                                                                                                                                                                                                                                                                        |
| ------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| <img src="/files/-MGASfJRfduOeLOnf9Jv" alt="" data-size="original"> | Slide the four Pre-Loaded brackets onto the Drive Rail Assembly as shown.                                                                                                                                                                                              |
| <img src="/files/-MGARTF-iGT1r24ycbA-" alt="" data-size="original"> | Align the Pre-Loaded Brackets where 6 Hex Cap Screws and Nylock Nuts are exposed.                                                                                                                                                                                      |
| <img src="/files/-MGAGx7Y3g8ugpVN0cWT" alt="" data-size="original"> | Add two Pre-Loaded Brackets to the Motor side C Channel.                                                                                                                                                                                                               |
| <img src="/files/-MGAHyJ6NbtiFvMruDiG" alt="" data-size="original"> | <p>Have the edge of the bracket roughly at the center of the large (9mm) hole. Start with the fifth hole to the left of the 90mm Single Sprocket Assembly.</p><p></p><p>Tighten the Nyloc Nuts until they are snug</p>                                                 |
| <img src="/files/-MGAUcBEzMwPAXyqRvmJ" alt="" data-size="original"> | <p>Slide the 45mm X 15m C Channel - 248MM onto the Preloaded Brackets as shown.</p><p></p><p>Tighten the Nyloc Nuts until they are snug.</p>                                                                                                                           |
| <img src="/files/-MGASfJRfduOeLOnf9Jv" alt="" data-size="original"> | Repeat sliding four Pre-Loaded brackets onto the other Drive Rail Assembly as shown.                                                                                                                                                                                   |
| <img src="/files/-MGARQzM9PuQdxxuj-d_" alt="" data-size="original"> | Repeat aligning the Pre-Loaded Brackets where 6 Hex Cap Screws and Nylock Nuts are exposed.                                                                                                                                                                            |
| <img src="/files/-MGAGx7Y3g8ugpVN0cWT" alt="" data-size="original"> | Repeat adding Pre-Loaded Brackets to the Motor side C Channel.                                                                                                                                                                                                         |
| <img src="/files/-MGAHyJ6NbtiFvMruDiG" alt="" data-size="original"> | <p>Have the edge of the bracket roughly at the center of the large (9mm) hole. Start with the fifth hole to the left of the Double Sprocket Assembly.</p><p></p><p>Tighten the Nyloc Nuts until they are snug</p>                                                      |
| <img src="/files/-MGAEWlyz1PQbk9To8j2" alt="" data-size="original"> | <p>Slide the second Drive Rail on.</p><p>Once in place, tighten the Nyloc Nuts until they are snug.</p>                                                                                                                                                                |
| <img src="/files/-MGAC3ZGwc3XyB361tSR" alt="" data-size="original"> | Slide two pieces of 15mm Extrusion – 420mm into the Pre-Loaded Brackets until they are through both sets brackets. One 15mm Extrusion is for the top and the other for the bottom.                                                                                     |
| <img src="/files/-MGAVZ5r5FlEhykSQA-C" alt="" data-size="original"> | <p>Align the 15mm Extrusion – 420mm so approximately the same amount of Extrusion is left on the end of each Bracket.</p><p></p><p>Tighten the Nyloc Nuts until they are snug.</p>                                                                                     |
| <img src="/files/-MGA9bKgA1EKuhWXJWGT" alt="" data-size="original"> | <p>Add a Through Bore Bearing – Short to both of the Drive Shafts and Through Bore Bearing – Long to the remaining shafts.</p><p></p><p><strong>Note:</strong> the longer section on the bearing faces away from the Channel</p>                                       |
| <img src="/files/-MGA8uNn-f5RKA5S3lco" alt="" data-size="original"> | <p>Take the Mecanum wheels and place on the shafts as shown.                  </p><p></p><p><strong>Note:</strong> See the steps below to see how to place the left and right Mecanum Wheels. </p>                                                                     |
| <img src="/files/-MEdOvGHyh9ZFSpewGH_" alt="" data-size="original"> | Each Mecanum Wheel Set comes with two right (REV-41-1656) and two left (REV-41-1657) mecanum wheels. This is determined by the direction of the leading edge of the rollers. If the rollers point left it is a left wheel and if they point right it is a right wheel. |
| <img src="/files/-MGEhbw8k2D2JwY4u7qV" alt="" data-size="original"> | <p>Each side of the chassis needs one left and one right wheel. Place the wheels as shown. </p><p></p><p>See the <a href="/pages/-MFqon_8YHJhcaRVTT9e">Mecanum Wheel Setup and Behavior </a>Section for more information. </p>                                         |
| <img src="/files/-MGA1H3__hA9PoxGUhZk" alt="" data-size="original"> | Add one shaft collar to the end of each shaft.                                                                                                                                                                                                                         |
| <img src="/files/-MG9ySjRpQXKLGR9I2-1" alt="" data-size="original"> | Tighten down the shaft collars on each wheel to secure them in place.                                                                                                                                                                                                  |
| <img src="/files/-MG9xCmHMs7lOaWz8hsH" alt="" data-size="original"> | **DRIVETRAIN COMPLETE**                                                                                                                                                                                                                                                |


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