I'm building a BBB 3B-R 100 frame with F10 motors and once I tighten them to the frame it smashes the Locke washer at the bottom and I can barely spin the motors by hand but if I dont tighten all the way the motor is too lose. Any ideas of how to fix this? Thanks in advance all!
Motors are binding once tightened to frame...
- Thread starter baevans11
- Start date
Got a picture of the bottom of the arm where the motor sits? There should be a hole/cutout for the C-clip or screw head to sit in.
Yeah there is a hole but I guess it's not big enough. Should I drill it out?
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Ok thanks and yeah I'm fairly certain that's what it is because as soon as I loosen the motors they free up and spin normally.
Let me know how it goes, and don’t take too much, it will reduce the strength of the arm just a smidge. You may want to coat the hole edge with super glue, it will help strengthen it a bit
Update: I used a conical shaped stone bit on my rotary tool so as not to drill all the way through but basically just put a bevel shape where the motor sits and they now spin freely when tightened all the way down. This isnt the first spot I've had to drill on this frame. The holes for the flight controller bolts were too small so I had to open them up. This is a poorly designed frame imo. At least it looks good aesthetically and seems strong but time will tell.
I have a new issue maybe you can help me with. I'm getting really poor video signal to my goggles and I've tried 2 antenna. I also have the power of both goggles and vtx turned up. If I take the top plate off the signal is good but as soon as I put it back together it gets all choppy. The antenna does run through a hole in the top plate but i think it's designed for that. Is it interference from the carbon if so how can i fix it? Thanks for any help.
Shoot me the best pic you can get of the quad vTX area with it together and failing, and then apart and working, I want to validate a few things. From what you said I believe the pigtail could be the culprit, but I want to see what you have before I say for sure where I would look.
Ok I just took it apart and put it back together to take pics and it was working even while put back together so I went outside to fly and I noticed the video went to crap as soon as I turned on my tx. The vtx is mounted directly on top of the rx with a double sided sticky tape but I've done that before on a micro with no problem. Thoughts?
That shouldn’t be a problem, so the vTX signal got crappy even before you armed it? All you had to do was turn on the qx7? You didn’t by chance scan with your goggles to your vTX frequency did you? Or I have had a number of pigtails break at the u.FL connector, seems good until you get any distance or vibration, but you are sure that you don’t have an SMA pigtail end and an RP-SMA antenna or something? Sorry for the stupid questions but I just can’t think of any one thing that gives those exact indications. 2.4 control and 5.8 video should coexist fairly well together unless something is grounding or a broken center conductor. I am at a loss at this moment but will keep re-reading and thinking...
The antenna is just a u.fl diapole and both that I tried are brand new as is the vtx. Yeah I'm using a Taranis SE and yeah all it took was turning it on. I guess it is possible the vtx is hitting the rx somewhere. Like I said I just have a piece of double sided sticky tape and it could be contacting it somewhere. Could that be it? I didnt do a scan I always just manually look for the channel.
Yeah, that all sounds fine, are you running the stock antenna on your SE or are you running some aftermarket antenna? I think the going south when you turn on the TX is a clue, many think a dBi mod antenna is a good thing, but an improperly tuned antenna on a TX can cause all kinds of problems with SWR and radiation envelope and power. I am thinking about it this way because when the quad is powered the RX (both receives and transmits looking for a bind partner) and the vTX (transmits), so they are both doing there thing, and no interference. And it isn't limited to big throttle movements so it isn't an ESC noise issue. But the wrong antenna on the TX or a faulty TX could cause enough high power noise possibly. Just kind of running the indications around in my head and that is all that comes to mind. It is times like this when having a buddy with an Frsky TX to test against might help. I think contact somewhere between RX and vTX would cause poop right from the get go, so I don't think that is the issue, but you could always heat shrink or us a few layers of electrical tape around them to isolate better to see. This one is a hard one to figure.
Yeah I'm using the stock antenna. I never thought the risk was worth it to do the mod. And yeah I'm puzzled as well. Hopefully I get some time this week to take it apart and better insulate it to rule that out. If that doesnt work I'll swap out vtx then rx if need be. I'll post back when I try anything but let me know if you think of something different. Thanks so much for your help. It's always much appreciated.
Your very welcome, I wish I had some better ideas for you, but I am always gathering data points as I try to help so when you nail this I will be able to add another symptom/cause to the list. Thanks for keeping me in the loop moving forward with this and if I think of anything at all to try I will let you know asap. Good luck buddy!
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