Trek Madone Gen 8 Garmin Varia Mount

This is a mount for a Garmin Varia RTL515/516 on the seatmast of a Trek Madone Gen8.

Make sure to print this with a material that is somewhat heat and UV resistant, so you should probably avoid PLA here.

My print settings:

• PETG

• 0.2mm layer height

• 4 walls

• 4 top/bottom layers

• 20% infill

• no need for any supports

Additional parts needed:

• 2x M3 heat-set inserts (i used these ones: https://cnckitchen.store/products/made-for-voron-gewindeeinsatz-threaded-insert-m3x5x4-100-stk-pcs)

• 1x Garmin compatible puck (like this one: https://de.aliexpress.com/item/1005009330665603.html)

• 2x M3 screws (should come with the puck)

• ~1mm thick foam tape for the inside of the 3d-printed part, reducing the risk of the mount slipping

The mount has a 0.5mm inset in on the inside where the foam tape is meant to go. It will prevent the mount from sliding up and down, potentially scratching the paint in the process.

Assembly

1. Print part

2. Insert the 2x M3 heat-set inserts with a soldering iron

3. Stick the foam tape into the 0.5 mm recess on the inside of the mount, so it sits slightly proud of the surface.

4. Slide the mount onto the seatmast

5. Attach the Garmin puck to the mount using the two M3 screws.
   While mounting the puck, you should have to lightly squeeze the part together, only compressing the foam tape.