We team completely did the igor’s 450mm quad build with all specs…we connected to apm in gcs and even armed the copter…when we apply throttle 100% the copter doesn’t seem to take off it is just in same position with props rotating at high speed…we checked with motors spin direction and made sure motors spinning cw and added with cw props and motors spinning ccw , added with ccw props…still the problm persist…please help
Hi, I would double check the motor/prop directions one more time. How many cells are you batteries? I would also double check the theoretical rpm (Kv value of motor X voltage) with an rpm reader to make sure you have enough trust to get off the ground. Also, those tennis balls may be reducing your trust.
Please post a picture where your copter is visible in detail. If you say the props are spinning at high speed, but the copter does not move, I would say the motors/props are turning in the wrong direction, pushing the copter down. From your picture, it looks like the props are mounted in the wrong places.
If I can see it correctly they are wrong no matter where the front of the copter is.
Edit: Left and right in the picture would work as front, actually.
Guys if it won’t take off it would affect our final score of the semester…this is wat exactly happening…wen give throttle without all props all motors will spin at a time…but wen we add props two motors won’t spin until and unless we give a manual push…and with full throttle the drone would topple at one side…we checked and re did the esc calibration…we are using emax 4 in 1 esc and battery 2200mah…11.1v 3s…motors are 935kv turnigy motors…we checked the motors spin direction is also done…as given in arducopter website…please please help us asap…we need to fix it fast
Help us to help you…
You still did not post a detail picture of your copter.
If you only checked motor direction and the props are still mounted like in the picture, the copter will not fly.
Sounds to me as if it is a voltage drop issue.
Could it be that a very thin gauge cable has been used ? …Perhaps between ESC and motors? Or even Battery and ESC? Also possible to be linked to a bad soldering joint.
Could also be that the battery used can’t supply the required current. Would estimate (without having more details ) that at least a 40C type battery would be needed. 10 C just won’t cut it.
…but as previously mentioned: A few more detailed photos would help us in order to help you.