[freebeard]

Start here: https://ecomodder.com/forum/

https://ecomodder.com/forum/ecomodding-central.html You are here

https://ecomodder.com/forum/aerodynamics.html airframe

https://ecomodder.com/forum/general-...iscussion.html poweplant

https://ecomodder.com/forum/diy-how.html them's that do

https://ecomodder.com/forum/hypermil...rivers-ed.html the nut behind the wheel

For good results ask a specific question (with details or examples) in the appropriate subforum. For best results post the wrong answer to a question.