Engine starting double noise: Is it big problem?

[taos]

Dropbox - video-c59dc7a3df17955d447f682ade5c1b30-V.mp4

 

[msinger]

That's working as designed.

 

[Fly Dawg]

Not a problem.....It's a sweet sound ...that double rev.....

 

[taos]

Thx friends for hope.It was the first flight with P4P

 

[WWK888]

If you ever install your props improperly, you will understand why that is a good thing.