Okay after getting my Quad up a week ago, without any problems, I awaited better weather for some outdoor flying.I know it's part of the game, to crash... This time I hold myself responsible, altough I did not tilt the craft before the crash, as far as I can remember. But I was not able to recover.And could you guys give me directions on how to fix the wobbles in the first part of the vid. Those only occur when descending and flying backwards.Amazingly, only two nylon bolts snapped. Can't believe there's no serious damage. I'm going to give it a good check though.Also, one of the engine rotates (since the beginning) not so smooth as the others. When I turn it by hand I have to use 'more' force the for rotating the others.. Any ideas?But I have to say, I'm very happy with my Quad.Gerard
Also should note that Tridge came up with a nifty idea to keep copters from tumbling when the voltage drops from a long flight. I'm assuming that's what kicked in here because I've seen it at work 4 or 5 times for myself. Each time it happens I send Tridge a thank you because I don't need to rebuild my quad.
The wobbles while descending is likely "settling with power" which effect all rotary wing aircraft. Your descending into your own prop-wash which can be very turbulent air.
Slowing your descent (more power) will reduce this as well as maintaining some forward motion so that you are not settling into your own propwash.
If you have no vertical movement (not descending when moving backwards) you can try lowering your Stabilize roll/pitch P term a tiny bit at a time or (if its a fast wobble) lowering your RATE roll/pitch P term. Most likely the stabilize P term adjustments will help if that is in fact the issue.
Crashing is definitely part of the game and something some people cant accept. I have a friend that is dying to get into RC but isn't because he is afraid to crash. You will, end of story.
Wobbles while descending usually means the rpm is to low for stabilization to work properly. Try smaller props so that the motors have to spin faster to achieve lift.
about the engine - I found that sometimes (during a crash) the outer part of the outrunner motor (the outer shell which contains the magnets) unscrews a tiny bit from the top part with the spinner. If this happens it will not turn as easy as it should. I had as well a few times the u-clip at the bottom of the shaft moved a bit, scraping at the side of the motor mount. Just check if anything moved and make sure that all parts sit ok.
Comments
Thanks for all the help!
@John Arne Birkeland I'm using the 10x4.5 props, and 880kv motors. So I think that's fine?
@Don Cramer Thanks, seems like that's the problem. I just didn't think of that. I'll try to alter the rating a bit.
@jasonshort I'll try that setting as well an do some testing. I'll report back =) The voltage of the battery was not the problem.
Thanks again for all the help, I'm off to do some testing :)
Also should note that Tridge came up with a nifty idea to keep copters from tumbling when the voltage drops from a long flight. I'm assuming that's what kicked in here because I've seen it at work 4 or 5 times for myself. Each time it happens I send Tridge a thank you because I don't need to rebuild my quad.
Jason
I increased my Rate P from .12 to .13 to almost eliminate the wobbles while decending. I can drop 3-4m/s no problem straight down now.
Jason
The wobbles while descending is likely "settling with power" which effect all rotary wing aircraft. Your descending into your own prop-wash which can be very turbulent air.
Slowing your descent (more power) will reduce this as well as maintaining some forward motion so that you are not settling into your own propwash.
If you have no vertical movement (not descending when moving backwards) you can try lowering your Stabilize roll/pitch P term a tiny bit at a time or (if its a fast wobble) lowering your RATE roll/pitch P term. Most likely the stabilize P term adjustments will help if that is in fact the issue.
Crashing is definitely part of the game and something some people cant accept. I have a friend that is dying to get into RC but isn't because he is afraid to crash. You will, end of story.
Wobbles while descending usually means the rpm is to low for stabilization to work properly. Try smaller props so that the motors have to spin faster to achieve lift.
about the engine - I found that sometimes (during a crash) the outer part of the outrunner motor (the outer shell which contains the magnets) unscrews a tiny bit from the top part with the spinner. If this happens it will not turn as easy as it should. I had as well a few times the u-clip at the bottom of the shaft moved a bit, scraping at the side of the motor mount. Just check if anything moved and make sure that all parts sit ok.