KneesUp
Guru
There is something of Escher in the steel at the front.Now every time I look at the photo I go cross-eyed....
I think it's on it's back though - it'd make more sense for all the entry points to be level, and for the rear wheel to drop into the slot. The slope would be less steep than also.
Would it not be possible to put a lock around the channel and then around the frame - albeit that would mean someone could steal the wheels?