Originally Posted by
Jipe
Its adjustable like on the Brompton. But yours seems at the minimum.
Now, to fully fold the rear on Birdy with a cassette, the chain must absolutely be on the smallest cog.
it is on the smallest cog (11t) and I make sure rear wheel is fully up to the frame when folded. Still it requires considerable amount of force to push the seatpost all the way down.