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I would like to share a �hack� that I used to mount my SatNav to my XT660Z T�n�r�, which I think worked out rather well.

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)

Start with a decent quality golf ball. It doesn't have to be new, but we need the core that only the better branded balls seem to have. The cheaper, �driving range� balls are solid all the way through.

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.

http://i361.photobucket.com/albums/o..._165313013.jpg

http://i361.photobucket.com/albums/o..._165447623.jpg

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.

http://i361.photobucket.com/albums/o..._174816286.jpg

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.

http://i361.photobucket.com/albums/o..._175133338.jpg

You can paint the ball to match your bike at this point if you wish. I used a sharpie to colour mine.

http://i361.photobucket.com/albums/o..._180353672.jpg

Finally, fit the ball to the rail, then the RAM extension arm over the ball and install your GPS. Job done!

http://i361.photobucket.com/albums/o..._180637743.jpg
http://i361.photobucket.com/albums/o..._181436626.jpg

(apologies for the poor quality photos)