hi all
i have build the Flying falg " designed by flythingz at the time
i wont hassle with all the building details, it is very simple and u can see the pictures.
however, i did a small but important modification
in the orginal design , the RUDD STAB is "Uncle sam" made from 4-5mm polycarbonate form
i have replaced this STAB/Figure with a FIN and active rudd - servo - see pic.
last friday, me and I3dm
as test pilot
, had 3 flights
while flying, the plane wanted to roll from side to side consistently, after a while, the plane tried to roll to the RT with HARD down, without the pilot interference!!
I3dm tried to see if this related to wind dirction and speed of theplane - it happens on both, hence in high and low speed and fornt/back wind as well,
while flying slowly it is less.
at first, the planes was NOSEheavy and we added 130gr and went up again
we had slight improvment but still the plane "rocks" right after take of from side to side and the HARD down&right happend several times.
3rd test i have replaced the RX to iliminate any "old" RX and RF noise from being a part of this trubleshooting.
you can see the falg clip from Flying thingz - stable as a rock!
http://www.3d-nut.com/videos/flagship.wmv
while mine is acontrare.
if anyone have nay idea what could cause this or how to overcome such a matter please do comment on the matter
tech note:
OS55AX
12X6 APC
6V 2500 NimH
4X 475 HD - hiteck servos
1X 81MG - rudd servo
total weight - 4kg~
thx and shalom
Gadi