Garmin 910XT 22mm Aerobar Extension Mount

thingiverse

**Overview** A simple system allows for adjustable viewing angles, making it easy to mount a Garmin 910XT via the standard wrist strap to 22mm diameter aerobar extensions. It accommodates inner bar spacing of 40 to 50mm as well as shifter cables running on the inner face of the aerobars. **Tools and Materials Required** * Three millimeter by three to six millimeters long or number three forty-eight by one eighth to one quarter inch long set screws for angle adjustment (x2) * One point five millimeters for m3 or point zero five inches for #3-48 hex key for set screws * Two point four millimeters or three thirty-second inch for m3 or five sixteenth inch for #3-48 drill bit to size set screw holes * M3 by point five or #3-48 tap * Miniature cable ties (one hundred millimeters by four inches x two point four millimeters by three thirty-second inch x one millimeter by point zero four inches) (x4) * Half round file ~ twelve millimeters by one half inch and sharp knife for clean-up **Printing** Print two of Garmin_Mount_Pin - recommend individually for best diameter consistency Print one of either Garmin_Mount_Centre_Front_Adjust or Rear_Adjust ***Material:*** PETG recommended ***Shell Thickness:*** One point five to two millimeters ***Infill:*** Ten to fifteen percent should be plenty ***Support:*** Not required if layer height is small **Assembly** Size the angle adjustment holes and tap threads - remember PETG likes it slow, cool and needs frequent chip clean out in order to avoid rewarding you with a gummy mess. Note that you will likely have to bury the tap in order to get threads through to the bore of the center piece but bear in mind that a snapped off tap in the work piece is a sad sight indeed. Clean up the bore of the center piece and outside of the center pins ensuring pins fit freely but not loosely in center piece and that the cable tie passages are reasonably clear Install a cable tie in each pin (a little judicious curving of the cable tie will help) Push both pins fully into the center piece Locate between extensions - note that oblong hole in center piece faces up Add second cable ties and tighten firmly Mount watch - note that strap does not have to be tight - spare your spring pins Adjust angle and fix by gently snugging set screws.