hello guys,

yesterday i went to the field to sort of maiden a 46 size graupner piper cub j-3 which i bought from a guy who crashed it and needed the nose to be rebuilt. a friend helped me with the rebuilt and we (mostly he) made a pretty good job.

on take-off the plane did not track straight but instead wanted to go left. i applied right rudder but when it took-off it violently banked right and hit the ground with the right wingpanel. minor damage, but the question remains. why it behaves like this and what can i do to correct the problem.

BTW i also had a balance problem. with a heavier engine than normal the plane is still way too tail heavy. the manual states that the CG is 70mm aft the LE. for that setting it needs 120 grams (4 oz) of lead in the firewall.

best regards
red