Printed these in around 6 hours 30 minutes each. No supports!
It did require some cleaning up due to the lack of supports under the bridges, however the finished item looks great I think!
The only issue I have is that the X motor mount I use has an adjustable Z stop on the rear which hits the bottom of the stabilizer. Some careful filing of the mount will solve this problem, or if you have a sensor instead of switch you could just chop it off completely!
Printed in PLA at 50mm/s and 210c used Cura 2.5 for slicing.
The left and right sides are labled incorrectly, however this can be fixed by some clever mirroring in Cura. I printed them as they came and so the right side says left on it and vice versa lol.