Mavic 4 Pro - a couple of questions

[Paulctc]

Hi, just got my new Mavic 4 Pro. Really excited. But I got a couple of questions.
1) Is it normal for the M4P to shake/vibrate upon startup (propellers start spinning). It goes away once it reached idle rpm.

2) During hovering, there seems to be a "ringing" sound accompanying the propellers' sound. Anyone experienced this?

Thanks !!

 

[BossBob]

You probably need to straighten out the propellers from their folded positions. I know they’ll straighten as the motors spin up but the shaking is evidence of the unneeded extra physical load that not straightening puts on the hubs and pins.
On the ringing, no idea. Mini 5 pro has a high pitched whine at idle but then goes quieter/lower pitch than mini 4 pro in flight.

 

[Felix le Chat]

You probably need to straighten out the propellers from their folded positions. I know they’ll straighten as the motors spin up but the shaking is evidence of the unneeded extra physical load that not straightening puts on the hubs and pins.
On the ringing, no idea. Mini 5 pro has a high pitched whine at idle but then goes quieter/lower pitch than mini 4 pro in flight.

Concur.
Unfold the props before arming the motors.

 

[Paulctc]

Thanks a ton...it's most logical given the propellers of the M4P is huge.
Will try that out in my next flight and cease being lazy or in hurry to start without unfolding.