You don't see a dual flap quick filler being used in anger much anymore. I'd be remiss if I didn't mention this bike, the 2009 Lemans 24 hours machine. The French RC30 Forum put this package together and the man in the picture was key to it. These guys did a stupendous job, considering the good engine blew up. They should have had me build the powerplant. If I remember correctly the engine was pirated from a collector's bike somewhere. I might be wrong though. Stupid old age.....
If you speak and write some french, or even if you don't, Christophe runs the RC30 forum. Some of the (16.5") rear wheels used this bike were on eBay in 2010.