Re: System Voltage

["erik kump" <ebkump-at-hotmail.com>]

>From: JOHN PITTELLI <jplily-at-yahoo.com>
>Do you think you can locate 6volt gelcells?
>That might be a good, simple straightforward solution.

I have found some at various sources, but they were either too small, and 
many would be needed to supply the capacity needed, or far too large. Either 
way, the cost for the neccessary cells was prohibitive. The 12V Hawkers are 
already in hand, so ,due to budget constraints, other batteries are not an 
option at this point.

The particular motors in question are known in Battlebots circles as 
'Mini-EVs'. They are a 12V Johnson motor with a built-in fan that is durable 
enough to be overvolted to 18V. I was told that overvolting them to 24V 
would not be damaging in and of itself, but that the motor would be wound up 
so tight that any impacts in the system would snap a brush mount (i.e. 
self-destruct). Now when I say 'impacts', we were talking combat robots at 
the time. Given that there are no killsaws, flippers, hammers, or spinning 
weapons on the battlefield, I might be able to get away with it. Maybe it's 
time for some experimentation...

If I did just use a resistor to drop the voltage, can anyone give me an idea 
of what my power loss might be? And whether that resistor would get hot 
enough over time to be a heat risk to itself or other components? Thanks,

Erik 'exploring my options' Kump

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