I wish they offered a little more wire length on those motors. I guess they're designed for individual ESCs rather than a 4-in-1. BTW, you've got 16 motors priced out there.
Thanks. I just noticed when I saw the price spike. I didn't know the motor quantity defaults to 4.
That's true about the motor wires, but the distance from the rear motors to the center is a very long distance. I wouldnt expect anyone to make motors with wires that long, so I was prepared for that anyway. And although the build looks cleaner with a 4-in-1 esc, I would recommend getting a 1 x 4 to save space in the center. I only have my FC half soft mounted because I don't have enough room. My stand-offs touch the fpv bracket.
Yeah, the problem is most people forget to update the motor quantity to 4, but defaulting to 4 causes issues when motors come in a pack of 4. Some motors come with really long wires, like the T-Motor F60, which would probably work in your case.
It looks like you did okay with the space. I prefer 4-in-1 ESCs for the build time savings and simplicity. Were you able to iron out the vibrations with your mods?
I see. I've never tried those motors before.
I was able to get most of the vibrations out. I think getting the FC fully soft mounted will solve it. But to do that, I need a 1 x 4 esc setup. I also suspect that the esc is outputting too much electrical noise too close to the FC. It's using 18guage wires, so (according to my OSD) I can only push 56 amps out of the full 80, but it still starts shaking at 40% throttle. It just sucks cause I can't really tune it unltil I iron it out.
Did you try adjusting your PIDs? I just looked up your FC and it does use an MPU6050 which might require soft mounting, but you should definitely try lowering your P values to see if a software solution doesn't work. What version of Betaflight are you running? The newest version does a great job of ignoring vibrations. I wouldn't go as far as replacing your ESCs until you've eliminated all other options.
Yeah. Lowering P was the 1st thing I did. I went as low as 1/4 of the default betaflight 3.1 settings with D at 0 which made it fly like a semi. I still got vibrations at 40% so bad I couldn't see anything. I even asjusted the lowpass filter without luck. I realized later that about 90% of the vibrations were on the yaw axis. That's when I started soft mounting. I even did the motors even though they were extremely silent when I ran the tests.
Okay, it sounds like you've taken the necessary steps. Too bad they put an MPU6050 on that board. I don't know why they couldn't just use a 6000. Good luck getting that FC isolated!
Yeah. The sensitivity issue sucks. I'll update with any changes.
Hey. So I swapped the 4-in-1 Racerstar 20A to 4 DYS XSD20A. The Quad is now smooth with the Racerstar 5042, but gets mid-throttle oscillations with the Kingkong 5040s. It seems I've reversed the effects of the props, but there are now no vibrations at all with my current setup, so It's better I guess.
Were you able to soft mount the FC as well? Have you tried some more popular props like the Dal Cyclones?
I was able to get the FC soft mounted, but I may need some better dampers. I just used the rubber o-rings instead of the rubber damping standoffs. I'm getting some of those soon to see what kind of effect that'll have. To make bad worse, I also managed to bend my front right 4mm motor arm up by about 10° by running into a tree during an over-under. Doesn't sound too bad until you realize they don't sell spares, so I have to purchase the full frame.
I do have a set of Cyclones to try. I think I'll give them a shot today, but with the bent arm, It won't really make much sense until I get it fixed/replaced. There is very little vibration with the Racerstar props + the bent arm, so I'll keep using those until I get everything tip top.
At least the arm pieces are the same, so if you buy a new frame you'll have another spare set of arms.
So I tried the Cyclones (first time ever). It jitters a bit less than the Racerstar, but they feel silky smooth and extremely responsive. I've been sitting on them and wasn't going to use them until I got the vibrations sorted out. Now I wish I had been using them all along.