I have to use 66 motor output limit on 6s motors

[honest grove]

I have built 2 quads on the same frame and the same kv (1950). if I use 100 for the motor output limit on quad number one it will spin all the props but freak-out as soon as I put throttle. on quad number 2 if I use the 100 it will shake a lot and then at 30-40 throttle it will go 100 and turn off my vtx

quad number 1
-finz crooked
-tmotor mini f7 racer
-foxeer 60a (fat one)
-vci2207 1950kv
-foxeer hd vtx

quad number2
-finz crooked
-foxeer f722 mini v4 pro
-foxeer 45a
-tmotor velox v3 1950kv
-foxeer hd vtx

[gleaming spear]

1950kv is totaly fine for 6s, your problem not here. check fc orientation motor and props direction and motor ordering

[honest grove]

All correct

[gleaming spear]

both those FCs has flash, record issue with blackbox and send it here. also send video of the issue

[honest grove]

I have a video for drone 1. It’s raining where I am so I will get some black box stuff later

[honest grove]

This is quad 2 I put the black box as a overlay but tell me if you want the logs

[gleaming spear]

for this one check fc orientation motor and props direction and motor ordering

[gleaming spear]

send log

[honest grove]

turns out quad 1 and 2 have the same problem as far as i can tell.

[gleaming spear]

it looks different. first one can't even takeoff and it is obviously orientation and ordering issue.

[gleaming spear]

oh, you haven't enabled debug mode... by this log your issue in low frequency broadband noise. does you esc has capacitor soldered on power line?

[gleaming spear]

for logging prior bf 4.5 always use gyro_scaled debug

[gleaming spear]

https://youtu.be/H0wFSTdpIWM?si=55RWvkeOagZifIyp

[honest grove]

no so that is the wrong vid. it was because the whoop lite hdzero vtx was grounding out.

[honest grove]

it has a cap on the xt60 solder joints on the esc

[gleaming spear]

move it directly to esc it doesn't work with long wires

[honest grove]

oh sorry it is on the esc

[gleaming spear]

I'm not sure then. can you share flight stack close-up photos?

this is gyro pitch after filtering - too much noise

[honest grove]

This it quad 2

Quad 1

[gleaming spear]

1 advice that 100% will help - disable adc filter in your transmitter and apply rc link preset in betaflight

The quality is too poor and it's hard to make out anything. it looks like there are a lot of wires on top of the FC - nothing should be touching or vibrating near the gyro, the FC should not be resting on the frame and should stand gently on the vibration isolators

[honest grove]

i think i found the adc filter its set to global

[gleaming spear]

it should be disabled for all betaflight models

[honest grove]

Is this right

[gleaming spear]

don't forget rc link preset in bf presets tab. assume it is elrs 250 or 500 hz

[honest grove]

i use d250

[honest grove]

should i cut the rubber grommet's so it sits gently on the stack screws

[gleaming spear]

no, you should tighten screws with nuts to the carbon in first place. then remove all wires hitting the FC, also enshure FC doesn't touch frame or anything else

[honest grove]

look at the second to last i think i fixed it this is quad 1

[gleaming spear]

this log is:

• too short, need 1.5-2 minutes of flight
• too slow, use 1.8kHz log rate
• doesn't seem ok as it has lot motor vibrations
• has old bf version, use release please