You will need:
- 1 good quality golf ball
- hacksaw
- sharp knife
- drill press (or a steady hand) and drill bits up to 12mm
- sharpie (optional)
Use a hacksaw to saw a groove along the circumference of the ball. Not too deep – only about 3-5mm, as we are only removing the cover at this point.
Once you've removed the cover you should see what looks like a ball of rubber bands. Use a knife to remove the rubber band wrapping. This will leave you the core; a solid rubber ball almost exactly the same size as a 1” RAM ball mount.
Next, drill a 12mm hole through the ball. I started by drilling a pilot hole with my smallest drill bit, then worked up through the sizes until I got to 12mm.
Cut a slot with the hacksaw in one side of the ball, parallel to the hole of course, so you can slip the ball over the rail above the instruments.
You can paint the ball to match your bike at this point if you wish. I used a sharpie to colour mine.
Finally, fit the ball to the rail, then the RAM extension arm over the ball and install your GPS. Job done!
(apologies for the poor quality photos)
