If the bike is inexpensive, presumably you can risk leaving it locked up by the station. You normally want to pass the lock through a part of the frame that forms a closed loop. If it is possible, pass the lock also through a wheel. You may add a steel cable with loops at the end and use to secure the other wheel and saddle. You pass one of the loops of the cable through the lock too. Remember that a steel cable provides next to zero protection. It may be good enough to protect a bike that nobody wants, but a folder will be always a bit more valued that nominally similar quality regular bike. For us Abus locks below worked well with folders that we cared about not being stolen.



Granit CityChain X-Plus 1060


Bordo Granit X-Plus 6400


Bordo Granit X-Plus 6500