3D Model in .obj format

Design details: I need an abstract 3D model of a paramotor set -up.
this must include the wing and engine with frame hanging underneath.
I would like a separate propeller made, so that I can attach it to the above model so that I can animate it to spin

I can only work with the .obj format.


Note:
the design does not need to be detailed, more of an abstract design to represent a paramotor underneath a wing.
Ideas for the visual style: paramotor under a paraglider wing
Extra notes: references:
http://www.flatpyramid.com/3d-models/paraglider-cinema-4d-c4d