@JussiH
Thank u very much for ur long post! I am happy that the people here are explaining everything that even me iam understanding^^
Yes ure right the efficiency is not that good but i was testing this combination with 12 and 10 S at home and for flying around on middle throttle i have a higher flytime with the 12s than with the 10 S.
Maybe youre right with the 6S combination...iam sure the efficience is much better but i need to carry a bit.
All in all the weigth will be something like 14 kg of the copter and i thought a X Octo would be the best version...now that i was getting much more experience i would change a lot but the frame is already made and the motors bought like the props^^iam planing now since more than one year on that project and in the FPV Forum all people were really friendly and helped me a lot but with my experience in that times i couldnt really expact that they are "making" the copter for me.
I started first with a smaler copter and it was going so easy and so well directly that i thought i can handle a bigger project too...maybe i took little bit to much on my shoulders
First thing i will change on the copter is the distance between the two motors over each other iam sure that this distance is the key for a better efficence....maybe someone already made tests about that? I was searching in the FPV Forum and there are many threads about that but the results are not the really the same.
Not sure if its ok to ask that stuff in this thread...i think the problem of this tread is solved
Anyway thank u very much for the help would love to hear a answere on my last questions
Edit: I dont really need to fly full throttle the whole time and i need high thrust with the half throttle i can fly like i want. If iam flying with my combination longer than 20 min on full thrust the motors are going to hot. But i want the option to go higher with the thrust even its just for a short time.
Marco