I'm posting this in the General section, since this can be applied to both the Bel and Escort detectors. This write-up is also on my CarDomain pages as well: http://www.cardomain.com/ride/485534/3
So, here are all the components we'll be working with: radar detector, windshield bracket, suction cups, and a piece of felt. Feel free to substitute the material with rubber from an old bike tube, or any other thin material you can think of to absorb small vibrations.
First, measure, mark and punch holes on the felt where the suction cups would match with the windshield bracket. Also, make sure you allow enough (but not too much) material to extend over the rear edge of the radar detector. This is where the detector would normally contact the windshield. Remember, measure twice and cut once!
Next, push the suction cups through each of the holes:
Then, slide the suction cups into the windshield bracket:
That's it! Here's the finished product:
And, finally: Here's the picture of it mounted on the windshield. NO MORE RATTLING or CLICKETY-CLACK! AND, as a fringe benefit, this felt material also provides a little protection from direct sunlight. Overall, when driving, my detector has stayed a little cooler despite the hot summer sun beating through the windshield. Make sure the rear of the radar detector is unobscured and still has a direct view of the road. Happy motoring and good luck!