We thank the builders & owners who made and shared the videos below. Note that while all of the aircraft shown started-out as standard CH 640, many have been modified to meet the specific needs of their owners. Zenair does not provide drawings or kits for most of these custom modification. See here for the list of factory options available.
Two informative videos by James C., a CH 640 builder:
Finally, a highly modified CH 640 from Brazil, showing how the design can easily be customized: