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[J.beazley]

i have got a ripmax Sea rover 15amp ESC running a pair of 380 type motors.

what i would like to know is how high a voltage i can wack through the ESC  ???
on the piece of paper that came with the ESC it says: INPUT VOLTAGE 6 - 7 cells

now would it be 6 - 7, 1.2 cells making 7.2volts and 8.4volts,
or would it be 6 - 7, 1.5 cells making 9.0volts and 10.5volts??

Jay

[Subculture]

1.2 volt per cell.

Andy

[Aston]

Jay,

it's assumed when talking about ESC's and chargers etc for models, that you are using rechargeable cells, at 1.2 Volt, rather that dry cells at 1.5.  They wouldn't last two minutes in most applications, and then you have to throw them away and buy some more 

Aston

[Doc]

In the electronics industry there is a 'standard' test for determining the 'average' input voltage to an ESC to prevent it from burning up.  First, you have to know something about anatomy and physiology of the human body.  The second most sensitive part of the human body to heat is the tongue.  So, placing your tonge on the ESC (without shorting anything), applying a variable voltage source to the input of the ESC then increasing the voltage till your tongue tells you to quit, is the 'standard' test for voltage input.
 - 'Doc

PS - I'm not supposed to reveal things like this to a 'lay person' so please don't repeat it!  Oh, the most sensitive part of the human body to heat?  ...  The eye-lid.

[J.beazley]

mmm ive got a high pain tensile so i dont think i will be trying that out lol 
might end up burning a hole in my tongue before i feel a thing  ::)

im guessing its safe to run my ESC on 8.4volts instead of the 7.2volts i have been using for the time being.

[malcolmfrary]

The trouble with burning ESCs is that quite often you dont notice the thing getting hot if the voltage is just above limits - this normally happens with an over-current situation.  This is because over current cooks the output transistors, over voltage normally cooks the resistors driving the transistors.  Going off the Hitec ESCs that my club members have passed to me to "sort" in past years nearly all have been due to the drive resistor cooking not only itself, but everything adjacent.  The report was usually "It was smoking but it wasn't hot, and there was a horrible smell".
I managed to persuade most of them onto Electronise & MK etc.