ESC question

[PeterLester]

I have been using some 30 amp Opto ESCs for a long time based for on the recommendation of a friend.
But the motors have moved up in size to the following that draw 29 amps and can use 6S batteries.
http://www.hobbyking.com/hobbyking/..._4830_420Kv_22Pole_Multi_Rotor_Outrunner.html

I just realized that my ESCs, while rated for 30 amps, are now advertised for 2 to 4S not 2 to 6S....
http://www.hobbyking.com/hobbyking/...Amp_Multi_rotor_Brushless_ESC_2_4S_OPTO_.html

So what are the consequences of running 6S motors with 6S batteries but ESCs rated for 4S and no higher?
I have had well more than 130 flights with these in this configuration without incident.

 

[DucktileMedia]

I would say it's not even worth the risk if its not in the specs. It's totally possible the esc's might work but running anything beyond the ratings is just asking for trouble.

 

[PeterLester]

In any case I have been flying this Hex c/w these 2 to 4S batteries for a very long time, i.e., over 130 flights, using the 6S rated 22 pole motors and parallel 5S and later the 6S batteries.
And they never get hot!
My design focus was on the ESC and motor amp ratings....... I am shocked that I did not notice the 2 to 4S spec on these escs.

Now I am wondering how the ESC controller knows how to respond to the 5S and 6S conditions (battery and motor load side)..... is the upper speed range clipped be an upper ESC frequency threshold?