my simple motorbike with v style engine .stl.obj.fbxsimple motorbike ,all one joined object.easy to print i have had no problem printing it with my elgoo resin printer and ender3 pla printer.
STL (Stereolithography, filesize: 55.5 MB), OBJ (OBJ, filesize: 44.8 MB), FBX (Autodesk FBX, filesize: 75.3 MB)