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Still no lift off
- Thread starter lef149
- Start date
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- multirotor not flying
Everything looks fine there as well... What happens if you take it outside and try to pop it up in the air?
The only thing I can think to try would be to move the ESC's from the left side to the right to see if the problem goes to the other side. If not, then move the motors. If the problem stays on the same side then it's probably the FC.
Very strange...
Very strange...
What is the exact brand and model ESCs you are using? BLHeli is a firmware, not a brand. Can you add pictures top and bottom of them? Have you tried switching to oneshot125, recalibrated, and tried again?
Cheers!
LitterBug
Last edited:
I have an extra motor that i put on the right and had the same problem but havent tried moving them around. to move the ESC's around id need to do a bit of work because they are currently soldered in place but i will give it a try.
here are the pics of my extra ESC
https://ibb.co/jG3uFk
https://ibb.co/dKZ1vk
here are the pics of my extra ESC
https://ibb.co/jG3uFk
https://ibb.co/dKZ1vk
PsyBorg
Wake up! Time to fly!
Several things I wonder about after looking thru this whole thread again. Keep in mind I am probably rambling nonsense again but hey I am not there live to know these things for sure.
First when you ran the motors up one at a time two of them sounded like they were dragging and two spun up and sounded smooth.
Second I know pictures can be deceiving but it looks to me like your FC is slightly skewed in relation to the frame.
Third when you showed your stick movements Roll did not go quite to 2000 was not centering back to 1500 on the movement and was just above 1000.
Fourth personally I don't like where D is set. I would cut that in half.
If what I see and hear is correct I think we have a perfect storm for the FC not being able to compensate for the minor things I listed but they could be additive. Lets start with the FC.. if that is twisted towards the right like I think it is and the roll is slightly offset to the right as well that adds up to the fc thinking that a slight right lean is level. Now add if the two motors that sound draggy are on the same side then the other two will spin up easier and lead the slower ones. If they are on the right again that adds to the issue. Finally having D set high like that the FC wants to fight itself to make the quad level.
I would start by taking a look at the FC and make sure it is square with the motors any offset "Could" cause drift but you would still be able to lift off. Then try setting I for pitch and roll down to 30 and yaw can stay where it is for now. Then I would cut D by half across the board. This will loosen the FC's want to fight keeping that "lean" so much.
Once that is done with the props off I would turn on the radio plug in the battery arm the quad in acro mode and spin the motors up a little above a quarter throttle. Then pick the quad up and note the changes. While the quad is in the air tilt each corner down one at a time. The lower motor should speed up to compensate. if that seems correct go on to the next step.
Once that is done and props are back on making sure the lettering is up and make sure they all have the same pitch and that you do not have a mixed batch of props. I would spin the motors up just a touch above idle and give a little stick input in each direction. Just enough to see the quad respond.
If all that works and seems fine try to "pop" it up into a hover. Remember even though the FC can do wonderful things it will still require a slight bit of help getting off the ground and out of the prop wash until it is tuned properly.
First when you ran the motors up one at a time two of them sounded like they were dragging and two spun up and sounded smooth.
Second I know pictures can be deceiving but it looks to me like your FC is slightly skewed in relation to the frame.
Third when you showed your stick movements Roll did not go quite to 2000 was not centering back to 1500 on the movement and was just above 1000.
Fourth personally I don't like where D is set. I would cut that in half.
If what I see and hear is correct I think we have a perfect storm for the FC not being able to compensate for the minor things I listed but they could be additive. Lets start with the FC.. if that is twisted towards the right like I think it is and the roll is slightly offset to the right as well that adds up to the fc thinking that a slight right lean is level. Now add if the two motors that sound draggy are on the same side then the other two will spin up easier and lead the slower ones. If they are on the right again that adds to the issue. Finally having D set high like that the FC wants to fight itself to make the quad level.
I would start by taking a look at the FC and make sure it is square with the motors any offset "Could" cause drift but you would still be able to lift off. Then try setting I for pitch and roll down to 30 and yaw can stay where it is for now. Then I would cut D by half across the board. This will loosen the FC's want to fight keeping that "lean" so much.
Once that is done with the props off I would turn on the radio plug in the battery arm the quad in acro mode and spin the motors up a little above a quarter throttle. Then pick the quad up and note the changes. While the quad is in the air tilt each corner down one at a time. The lower motor should speed up to compensate. if that seems correct go on to the next step.
Once that is done and props are back on making sure the lettering is up and make sure they all have the same pitch and that you do not have a mixed batch of props. I would spin the motors up just a touch above idle and give a little stick input in each direction. Just enough to see the quad respond.
If all that works and seems fine try to "pop" it up into a hover. Remember even though the FC can do wonderful things it will still require a slight bit of help getting off the ground and out of the prop wash until it is tuned properly.
BUT, It may be possible for these ESCs to support Oneshot125 if they have the latest firmware....
Cheers!
LitterBug
I jotted down a todo list from what you said and ill give it all a try.
once i have time to try the flying outside ill try to record and post my results.
Thank you very much to everyone so far, i really feel like i'm moving in the right direction with all your help.
I tried to fly it a couple times after making those adjustments and had a a bunch go wrong before the last crashed caused the frame to break so ill be printing the replacement parts and putting it back together and try to fly again. this time ill be using improved parts to help keep the flight controller in the center better.
here are the 3 flights
here are the 3 flights
Userofmuchtape&glue
Posted a thousand or more times
What are you trying to hold the props on with?
It's a nut that came with the collet I might have had that one a little tight I was having problem with the props coming loose before so the blade shattering was my fault. The second fail the motor came loose and the third was just a bad crash. I just wanted to keep you all up to date in case you don't hear anything for awhile.
You should be using lock nuts (nylocks) on the props and locktite on the motor mounting screws.
ok I have the new frame together and then i tried to fly it and had a bit of success. then it started acting funny, now i replaced the flight controller and the motors and esc's are on different spots then before and the one motor acts funny. can anyone tell me what is going on with this?
ok I have the new frame together and then i tried to fly it and had a bit of success. then it started acting funny, now i replaced the flight controller and the motors and esc's are on different spots then before and the one motor acts funny. can anyone tell me what is going on with this?
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