Since a lot of people have asked for reoriented files and I wanted to brag with my skills: here you have all the files reoriented and ready to print. The propeller and the spring didn't need to be adjusted, but I added them to have a complete model.
As already mentioned you can use Slic3r to adjust the model orientation. If you have Windows 10 you can do all this with the built in 3DBuilder... (so there's nothing to brag about :) )
All credits go to the original author(s).