tell your cousin there is the 3rd European RV meet in Damme, Osnabr?ck, EDWC, from 28 to 30 May 2010 http://www.flugplatz-damme.de/inde .
Very intersting!
He also can get in contact to some German RV builders via their excellent homepages as http://www.rv8r.de/ or http://www.rv-4.de/.
Hals- und Beinbruch
Frank "R"