is it really that light with lipo* (rotorbuilds keeps CONSISTANTLY cutting words out of my messages, sorry about that)

Yeah I meant dry weight. 250g 5" with battery would be mindblowing :D

No worries haha. Yeah it really would be!

Yep I will move it protected at the back, planning on printing something soon :)

Cap is not necessity. You will be just fine by removing it.

I've found caps to be quite useful on these 5-in-1 boards. They're more prone to noise considering the close proximity between the gyro and ESCs. You'll definitely want to protect the cap though. It'll break right off where you've got it.

The capacitor is installed on Battery power which filters the spikes from the battery power coming in to the board. The cap does not filter noise generated by the ESCs... so I am bit puzzled... by your comments. I have never heard of ESCs affecting gyro... I have heard and experienced bad/noise battery voltage affecting gyro, esc, and motors. Until you have such scenario, there is absolutely no need to install a cap. If you have noise on your VTX and rest of your electronics are fine, then just use micro LC filter on your VTX power and it will help with the noise coming into the VTX.

Ill disagree with you there dude, the positive and negative terminals on the battery are the beginning and end of your circuit which includes all the electronics in between (ESCs). Without a cap on a 4 in 1 I almost guaranty you will get noise in your video feed if you cut throttle back abruptly. Are you familiar with active breaking on these 4 in 1's?

I will disagree with your disagreement. As I stated, if you have noise issue to your ESC, motor, and gyro then use a cap. If you have vtx noise issue then use LC filter. I bet you anything that if the owner takes off the cap on this build, it will be just fine. As for your beginning and end of circuit... ok yeah electrons flow from + to -. Yeah thanks for the lesson...

On a typical 4 layer board, there are isolated and well planned power plane and ground plane. Usually, if the EE who designed the board was smart enough, the Digital ground plane vs analog ground plane would be isolated with plenty spaces between so analog noise like esc noise cannot corrupt digital power and ground plane and usually, the sensitive digital ICs like gyro and the cpu would have filter caps on the power line to filter out with dirty voltage.

Once again, I will stress the point that you only need to install a cap when you need to. I had to install it couple of times to help with noise but my other builds are just fine without them on 4in1 ESCs.

Isn't active braking for oneshot and multishot? If so... who uses them these days with DSHOT 600 and 1200? If not, its not affecting my build. I tend to stick with Dys 4in1 or Spedix 4in1 and also CLRacing F4(s) and Dys F4 Pro.

to each their own, adding a cap in practice is well known to reduce noise in FPV feeds and protect batteries. if it works for you go for it. i can only speak from the dozens of quads ive built and thousands of hours ive flown

I have built around 30+ quads for myself and for my son. I probably used caps on a good dozen build or so. All related to VTX noise. One build had noise issue with ESC which adding a cap helped. So my conclusion is use it when need to but this build looks super clean and doesn't seem to need one. As for protecting the cap, I am all for it.