problem with first ever quad plz help :(

D

danny

Member
i recently built a sm450 frame with 4x multistar 20 amp esc +8*4.5 props on hobby king fc-28 motors and a kk2.0 board running 2200 3s lipo
but when i try to take off either 1 side lifts off ground and flips or it just dosnt... i have calibrated it and set gyros plz help im stuck... :(
 
Mike

Mike

=)
Admin
Is this the motor you have?

http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=5423

That motor seems small for your setup but it may be okay. How did you come up with this combination of parts - was it something you saw that was proven already?

You may want to run all your specs through eCalc to make sure it's all going to work together to provide enough lift to fly comfortably.

Are your trims on your TX all zeroed out when you calibrate the board and gyros?
 
D

danny

Member
yes :) they are the motors i have and there are alolt of videos with people using theses on 450mm - 550mmm so i think they should do it but as i said one side does take of but then decides to flip :(
 
Mike

Mike

=)
Admin
Could be a firmware issue as said in the other thread. Could also be a center of gravity issue. You need to make certain that all four corners are holding about the same weight. If your battery is shifted to one side or the other, you could have issues with stabilization.
 
Chrysolithos

Chrysolithos

Member
My quad had flipping problems when I rewired one of the ESC to motor leads wrong. Are all your motors turning the correct direction?
 
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