Posts: 2,410 Threads: 136 Likes Received: 1,790 in 1,052 posts Likes Given: 3,302 Joined: Jan 2017 Reputation: 50 24-Jan-2017, 10:01 PM (This post was last modified: 03-Mar-2017, 08:04 PM by Drone0fPrey.) Update/fix posted in replys. Just finished the quick lil build. Nothing fancy, still stock tx and stock props, just changed frame to Picnic Quads Efficiency X 80 poly frame and 0720 motors. Things went bad on maiden. Quad behaves as if Im holding my roll trim button to the right. I can compensate with stick input, until i run out of stick lol. Then when I center my stick it rolls right even more. There are some added oscillations but motors and props seem ok. (motors are slightly used btw) Can this be done without flashing firmware and adjusting PIDs (thought it would at least be flyable lol) Only other difference is I changed the board mounted losi plug to a pigtail losi. Board is mounted with foam tape. Edit: after singling out each motor and prop I noticed some really bad harmonic vibration coming from 2 motors. Tried to make a couple new (h8) props to fit, but I think I just need to get some props made for 1mm shafts. Any advice tips tricks lemme know please. Thx for looking! • Posts: 1,504 Threads: 83 Likes Received: 944 in 654 posts Likes Given: 2,142 Joined: Sep 2016 Reputation: 24 I'd be very surprised if replacing props fixed your issue! I have to ask, have you reset the gyro's, I think its - hold both control stick to lower right or both to lower left? lights flash briefly to confirm something has happened..? check motor shafts for any hair or carpet fiber? Make sure that the board is mounted level, that the quad is level when you bind, I think the gyro resets when you power on/bind so maybe it wasn't on a flat surface? Not too sure if its just the camera angle but it looks as though the motors on the right of the pic look like they are mounted lower making the quad un-level..? Otherwise bud, I'm afraid I'm stumped! • Posts: 2,410 Threads: 136 Likes Received: 1,790 in 1,052 posts Likes Given: 3,302 Joined: Jan 2017 Reputation: 50 (25-Jan-2017, 03:59 AM)Tom BD Bad Wrote: I'd be very surprised if replacing props fixed your issue! I have to ask, have you reset the gyro's, I think its - hold both control stick to lower right or both to lower left? lights flash briefly to confirm something has happened..? check motor shafts for any hair or carpet fiber? Make sure that the board is mounted level, that the quad is level when you bind, I think the gyro resets when you power on/bind so maybe it wasn't on a flat surface? Not too sure if its just the camera angle but it looks as though the motors on the right of the pic look like they are mounted lower making the quad un-level..? Otherwise bud, I'm afraid I'm stumped! Yeah reset gyro several, several times. Thats whats weird, after it drifts off I can land and start the process all over again, WITHOUT resetting gyros, take off level, and slowly roll more and more to the right once again. Motors and props are all level. (even tried @ different heights to change COG and stability of motors) Board is level and centered well. Ordered some hubsan props for 2$ so no biggie if they dont work. Next would be to try some new motors vs these used ones I had laying around. Tyvm for the reply tom! It has got me scratching my head too • Posts: 2,410 Threads: 136 Likes Received: 1,790 in 1,052 posts Likes Given: 3,302 Joined: Jan 2017 Reputation: 50 Here is a video of its behavior. Before new motors and frame it would have just sit there warming up motors like a good lil quad. It must be becoming a teenager • Posts: 1,504 Threads: 83 Likes Received: 944 in 654 posts Likes Given: 2,142 Joined: Sep 2016 Reputation: 24 (26-Jan-2017, 06:53 PM)Drone0fPrey Wrote: It must be becoming a teenager Lol, I wonder, is that the drone version of twerking!? I reckon if it was becoming a teenager, when you pushed up on the stick, it would have turned round and said "Why are you always hassling me, can't you see I'm busy on my phone, it's so bloody UN-FAIR!" before stomping off to its room! Posts: 2,410 Threads: 136 Likes Received: 1,790 in 1,052 posts Likes Given: 3,302 Joined: Jan 2017 Reputation: 50 31-Jan-2017, 10:22 PM (This post was last modified: 31-Jan-2017, 10:22 PM by Drone0fPrey.) New motors and props arrived today. Hoping this fixes the issue. Update soon • Posts: 2,410 Threads: 136 Likes Received: 1,790 in 1,052 posts Likes Given: 3,302 Joined: Jan 2017 Reputation: 50 No luck. Vibrations are much less and still drifting off. Could the frame be the issue? I @ a freakin loss here • Posts: 1,504 Threads: 83 Likes Received: 944 in 654 posts Likes Given: 2,142 Joined: Sep 2016 Reputation: 24 Haibo! Minangaas! Zulu for - Oh no! I don't know! I just received my spare props for my H8, realized I was missing a few tiny screws and used them in the OUTER-most holes to hold the motors. I forgot that the board is held by the INNER-most holes, this made the quad NUTS! it was very noisy and sort of flyable, but if you did any hard maneuvering it would flip over and over really fast and crash. Putting screws in the right holes(!) to hold the board fixed this totally. • Posts: 2,410 Threads: 136 Likes Received: 1,790 in 1,052 posts Likes Given: 3,302 Joined: Jan 2017 Reputation: 50 (01-Feb-2017, 04:27 AM)Tom BD Bad Wrote: Haibo! Minangaas! Zulu for - Oh no! I don't know! I just received my spare props for my H8, realized I was missing a few tiny screws and used them in the OUTER-most holes to hold the motors. I forgot that the board is held by the INNER-most holes, this made the quad NUTS! it was very noisy and sort of flyable, but if you did any hard maneuvering it would flip over and over really fast and crash. Putting screws in the right holes(!) to hold the board fixed this totally. Lmao I had put a small thought into that. Because all stock, frame is flexable and board is hard mounted. How i have it now is on a more rigid frame with the board mounted with foam tape. Hmmm Any thoughts or suggestions would be highly appreciated! Maybe we can think of a different way to mount. Hot glue maybe idk. Thanks everyone! • Posts: 1,504 Threads: 83 Likes Received: 944 in 654 posts Likes Given: 2,142 Joined: Sep 2016 Reputation: 24 I mounted a board on blobs of hot glue to keep from shorting on CF frame, I let the glue go cold and just used them for insulation, I mounted the board with a rubber band, it worked ok-ish... I think the main issue was the props, because the same frame and H8 board worked fine with actual 8.5x20mm motors (not the 8.5x15mm from BG with ridiculously heavy props) and Ladybird props. However after installing silvexxx firmware on both my H8 boards, both seem to have developed the same issue, rolling back and pitching to the right, flying level mode I reach a point where I have no stick authority left to correct the roll. Flying acro is better as you can just keep nudging forward/left to correct, but as I have no experience with flying acro I spend more time getting used to correcting it's roll/pitch than managing to get the hang of actually flying acro mode! Have you flashed silvexxx to the board your having problems with or is it still stock firmware? • Posts: 2,410 Threads: 136 Likes Received: 1,790 in 1,052 posts Likes Given: 3,302 Joined: Jan 2017 Reputation: 50 Mine is all stock firmware. This was the first step haha. I have an h8 3d coming. Its a slightly bigger frame w/ 7mm motors. Going to see what happens when i move the regular h8 board w/ 7mms into this new frame. Imo its got to be a vibration problem interfering with the gyro loop. • Posts: 2,410 Threads: 136 Likes Received: 1,790 in 1,052 posts Likes Given: 3,302 Joined: Jan 2017 Reputation: 50 |