Trailing wheel axle / Löphjul
NB88
With spoke wheels / ekerhjul
N10, N10S
With spoke wheels / ekerhjul, 20" hub / nav
F12 ch.34001-, N12 ch.8780-
With wheels / skivhjul, 20" hub/nav, N12 Spoke wheels/ekerhjul, N12S With disc and spoke wheels/
skivhjul och ekerhjul, 20" hub/nav, F16 With spoke wheels / ekerhjul, 20" hub/nav with leaf springs / med bladfjädrar