I saw the old Dahon Helios in another thread which seems to have been discontinued from around 2007. But brought back in Japan this year with slightly different hinge. It looks very similar to the FnHon YA1818 in Alu, or the old Dahon Impulse in Chromoly, or Presto in Alu.
Dahon Helios worth buying?
?? : **********?? DAHON Helios 22 Shimano 105????Blog? - livedoor Blog**********

In all 3 of these designs, the floating top compression tube is much higher than the Visc, but has a higher risk of getting damaged or misaligned. I wonder why Dahon went away from this type of frame.



Dahon Japan also has the Curve D7 cassette (not gear hub). I don't see this in the EU or Americas sites.

?? : 2018 DAHON Curve D7 ???Blog? - livedoor Blog**********