Mounting the large basket longitudinally on the RadCity stepthru.
Longitudinally mounted makes manuevering the bike easier and balancing a load of books etc. easier. My wife is a teacher
and carries alot of books and school things.
The basket as delivered/designed is not set up to mount this the way as the basket mounting holes are configured only for transverse mounting on the RadCity rear rack.
I made a 1/4" aluminium adaptor plate and bolted this to the rear rack and then the basket to the adaptor plate.
Remember leave room for the riders butt. This bike has a Suntour seat post suspension as well and you dont want the basket hitting the rider back.