the subtle dual suspension and the busy but rigid truss frame .. they also made a less triangulated , but still dual suspension
in CoOperation with Bridgestone of Japan. but the APB was Made around 20" wheels .
the earlier ones a proprietaty size that back then only Wolber made.. for Sir Alex's company..
the other Theoretical The main Brompton frame parts in Ti... the fork & rear portions are already made..
But I'm OK with the steel M3L I own.
Last edited by fietsbob; 07-19-15 at 03:30 PM.