Unisided hubmounts are the single most stressed elements of any tadpole trike, whether they use headsets or custom kingpins for attaching the wheels, as does the GNAT: they have to withstand dynamic loads of a considerable mass in motion (trike with rider) simultaneously in three dimensions. This hubmount combines a base for a unilateral (one-sided) 12mm axle for the wheel with anchors for wishbone outriggers, steering links, and a sturdy endpoint for the suspension "spring". Except for the last one, all the other need to detach quickly for collapsing...	Tadpole trike= two wheels in front,  driving one in the back; as opposed to  Delta-form trike= one wheel in front,  two in the back type. (For the sake  of consistency, shouldn't "tadpole"  better be called a  p r i s m  trike?)

photo Ian Feldman 1998