In the USA, the term “ultralight” refers to aircraft that are not otherwise regulated by the FAA, as long as they meet certain criteria. The Ranger is far outside of that criteria:You lot on your side of the pond live a very sheltered life
However, in the modern world the best one that's still in production has to be the Sherwood Ranger ST,
Sorry, stanislavz, I'm not quite sure what you mean. Are you asking what is the appeal of an ultralight biplane?“How about Maurice Guerpont's Biplum?“
That’s pretty cool! Looks a lot like a biplane Cloudster. Hmmmm......
Is int anything here expect look of biplane for ultralight ? Or it is as draggy as rag and tube, but more rigid ?