pitchcar 90 degree turn loop

it's a turn, and a loop! Half width 90 degree turn only passable through a loop.

Update: Printed 90withWiderLoop.stl (pictured) but due to my enabling horizontal expansion the connectors are a bit too large. Can be fixed with a little sanding. Also I need to redesign one of the ends, for now it only works as a right turn. V3 coming soon!

2/6/2020 90withWiderLoop4Supports.stl : Lined up the openings with the rail, experimenting with built in supports.