In looking at the pictures it appears that there are two bolt lugs in the "head" tube. If someone was handy, they could use those to mount a Brompton block.
Originally Posted by
Jipe
Was there any picture, drawing or other information published about the front mounting block like for the suitcase so that somebody else could try to make it ?
The lack of any easy luggage transportation (that must not be dismounted each time the bike is folded) is a major problem for a daily/commuter use of Helix.