Garmin Montana Kayak daybag mount

thingiverse

A custom mount designed to attach a Garmin Montana GPS to a kayak daybag closure. The original bike mount project has been remixed, with minor changes made to montana_arm_set.scad and montana_attach_plate.scad. Many thanks are due to MoonCactus for generously providing the source files and allowing remixing. The fillet_cube.scad file is from my openSCAD Primitives library (http://www.thingiverse.com/thing:1679551 or https://github.com/imageguy/openscad_primitives). Code assumes it's under plib directory. Remixed files fall under the original license from MoonCactus, while my own code (montana_kayak_daybag.scad and fillet_cube.scad) is unrestricted. People had issues with stability due to top-heaviness. A short version was created by overlapping the mount with the clip. The *_short.scad file makes the short version, montana_kayak_short_main.stl is the STL of the base modified part, while the clip.stl remains unchanged from the previous version. Note: the short version has not been built or used. A "shortest" possible version was also created by attaching the Montana to the clip itself. The STL for this version includes only the mount part of the clip; print clip.stl for the other part. Print Settings: Printer: TwoUp Rafts: No Supports: No Infill: solid Notes: ABS material and solid infill were used, with a 0.2mm layer thickness. Post-Printing Assembly: The bag attachment is essentially an overgrown clothespin. An axle and torsion spring are required; I used 12 or 14 gauge solid brass wire for the axle and a clothespin spring. Drill slanted holes for the torsion spring arms, depending on spring size; see my GoPro clip mount (http://www.thingiverse.com/thing:1707320) for another instance of this design. To attach the arms to the mount, four 10mm M3 screws and nuts are needed. Usage: The whole assembly is top-heavy and will not stay upright when clipped to a twisted daybag closure. A thin bungee looped around the top of the Montana and tied on both ends to the daybag stabilizes it nicely. The mount performed well during a two-week sea kayaking trip on the Great Slave Lake in northern Canada.