Took out my commander II this morning. It did not climb very well and nose dived more times than I care to admit. There is trailing edge damage from the propeller and the foam separator is dislodged in the firewall so the motor is no longer stationary. I will fix these things and try again but I do not know why the plane would not climb. The tail flaps look OK (the only thing not damaged). Any ideas?

Jazieyone

if your adding glue and stuff it may move the balance and add weight e.t.c

jazieyone

Three quick and easy things to check for:

Check the CG - diving is a sign of being very nose heavy.

Check the angle of incidence of the wing to the stab - the the trailing edge of the wing higher that it should be?

Check the thrust line to make sure it's not pushing the nose down excessively.

Hogflyer

Make sure you are not overcontrolling it and making it go into a spiral dive.