Drone?

[tropical trim]

I'm new to the TDR website and lingo. Please help out by explaining what the word drone is. I've saw this word used in exhaust type disscissions. Thanks Kyle

 

[RADdodge]

It's a resonance that occurs in all exhaust systems to a greater or lesser degree. There is a naturally occurring harmonic due to the mass (and other variables) that sets of an oscillation that can be heard as a noticeably louder exhaust tone. On my exhaust, it’s around 2600 rpm if I remember correctly. I only hear it occasionally when going from OD to 3rd around 60mph. For many, it’s unnoticeable. For a few, it’s unbearable and has to be changed out or fixed.

 

[98rammer]

Originally posted by RADdodge

There is a naturally occurring harmonic due to the mass (and other variables) that sets of an oscillation that can be heard as a noticeably louder exhaust tone.

uhhh... ... . it's just an annoying sound it seems that a lot of 4" systems or others being straightpipe will make the drone occur.