It took me some time to realize that all my pullback planes are wrong. They work like cars but they should work like planes - I explain you what I mean. Main purpose of pullback motor in my pullback planes is in spinning propeller and not moving plane forward. So until now you had to pull them back and then lift up to swoosh. Is this really the way how real planes take off? NO! To fix this issue I developed new "push ahead" (P. A.) system. It works simply like this: push plane to any surface (table, wall, floor etc.), push it ahead and lift it from this surface to get propeller spinning. And you can do this each time when propeller stops spinning without need to pull plane back. WARNING: you will need additional 9 gears that are not included in set 42137 to build this model.

I wanted to build something bigger and higher out of original formula so I chose truck. It features two pullback motors with ratchet mechanism similar to original model. I had to build it just 13 studs wide (2 studs narrower than Formula E) because I ran out of parts. Building instructions can be bought exclusively from rebrickable.com where you will be redirected after clicking on "Download instructions".