Just an idea but if you slid the cali seat fully forward can you get a fitting that goes into the rails and goes parallel with the axle, could this be used and modified to have a spindle in it to fasten bike forks to?
Something like this that in term mounts into the rails so it doesn't move about in the van?
https://pinterest.com/pin/532761830891800076/?source_app=android
Something like this that in term mounts into the rails so it doesn't move about in the van?
https://pinterest.com/pin/532761830891800076/?source_app=android