Genesis Flyer is something odd on the rear hub spacing. 130 or 135… Not 120 anyway.
I just got an on-one pompino.. Heavy, cheap, klunky, stiff as a board and lots of fun. Also going to have a sturmey 3spd hub when I get round to servicing it.
EDIT.. actually, looking at it, the flyer might be 120.. They did do one that was 135 ss/fixed before.