will anybody plz help me? i have made rc cesna182 , using very light plastic sheet.i have used dys(A2826-10)brushlss outruner motor. ,rcforall esc,7.4v/850mAh LiPo battery (rcforall) and HK T6A transmitter - receiver set.the total weight is 450 gm.
but there i am facing some problem
   (i)  the motor cannot provide sufficient speed to fly ( though its specification ,it can take upto 780 gm)
   (ii)  when i trying to fly it ts front part getting down (might be CG problem)
 
Plz tell me what can i do ?

waiting for your reply
with regards
avigyan chatterjee

adjust thrust line of the motor

http://www.airfieldmodels.com/information_source/math_and_science_of_model_aircraft/formulas/engine_offset.htm

also try to use 3 cell battery

Check cg !!!

dear satish
   will u plz tell me how can i check the thrust line?
the website u had provided me is not opening.
  with regards
avigyan chatterjee

post a picture - or better still a video ,that is the
only way you will get accurate answers, otherwise
it will all be guesswork

try using a reverse prop.

Ehhh...... see the picture., add two or three washers in 1 and 4 place motor mount bold.If u have do this,motor will angle up some degree.so got answer for second question.Another one idea is,trim elevator towards up. and check CG to.