What does a properly adjust motor truly sound like?

[Spitfire]

I've always wondered this, the best description I could find is that it sound like "all your gears are mashing together properly". Now, aside from the extremely obvious squealing noises from over-tightening or under-tightening the motor adjustment, I honestly can't seem to figure out what sounds good when it comes to proper motor height adjustment. Is there some sort of guideline you're supposed to follow?

I'm adjusting the motor on my King Arms Thompson, if it matters.

[Alien_Hunter]

I think it's when it reaches the highest pitch and the rrrr sound is the quietest.

[Spitfire]

I think it's when it reaches the highest pitch and the rrrr sound is the quietest.

See, I've been told before that you're supposed to be trying to make the whiney noise of the motor go away. I have it set at the highest pitch though, that seams to be the most logical anyway.

[Jester316]

You want as little noise as possible. Noise=friction=heat=wasted energy=more drain on the battery

[code789]

[spazzticsmurff]

ill leave you 2 videos here of what a properly tuned gun sounds like with the motor hight adjusted properly.

this is my lr300 custom. the motor height was set using the halfshell method and then the bevel was shimmed to the pinion using a dial indicator and the rest of the gears were shimmed this way as well. gears are core 13:1 ratio with a custon 20tpa motor and a core piston
http://www.youtube.com/watch?v=D5mB77z70II

the second gun is my g&p zombie killer custom. it has riot 14.09:1 gears, super shooter piston, and a custom 28 tpa motor. the pinion height was set using the half shell method and was then shimmed the old fashion way, by feel. i much prefer doing it with my dial indicator, it is so much more precise that way.
http://www.youtube.com/watch?v=9uze53Vpi5k

both guns run off of a turnigy 11.1 25-50c batterys, i just purchased turnigy 11.1 45-90c batterys but they arent wired to deans yet so i havent used them yet.
believe it or not i got more money in the g&p zombie killer than i do in the prime lr300. lol.

edit2: when building a gb and setting the motor height, be sure to locktite the adjustment screw so that it doesnt back out and screw up the settings. i need to actualy set down and film my method of doing the motor height and shimming with a dial indicator.

edit3: here is another example of what a properly tuned gb with proper motor height sound like, this one is not one of mine.
https://www.youtube.com/watch?v=hFms0PIjsyc