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E-Revonut
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01.02.2009, 05:55 PM

Quote:
Originally Posted by shaunjohnson View Post
ok u got me
i was basing my info from large scale brushless/induction motors.
but do that little test with brushed motor...it's a good one ;)
i must have been wrong
rather than your test why don't you hook a lightbulb up to the motor and turn it with a drill and see what happens! Then tell me what happens with the energy that gets created by braking.


RC-Monster RC8T 1515 2.5D/MMM/5s RC-M 4500mah
SC10 MMPro 13.5T 2s NeuEnery 5000mah
RC18T Mamba 25/5400kv 2s lipo + 6s NiMh
   
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shaunjohnson
i pwn nitro
 
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01.02.2009, 05:58 PM

yes there is energy being created there.
but the voltage generated has to be more than the lipo's pack voltage to be doing any charging. right?

so if u have a 4s lipo the motor regeration has to be (after going through any conersions and stuff through the ESC) 14.8+v

you will get more "load" by shorting the 2 tabs on the BRUSHED motor and hence more braking than what you will if you had surplus and wanted to regenerate.
so braking power must be wasted by heat. right?

no i'm not looking for a war either..and no patric is not wrong..i am
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George16
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01.02.2009, 08:47 PM

Quote:
Originally Posted by E-Revonut View Post
rather than your test why don't you hook a lightbulb up to the motor and turn it with a drill and see what happens! Then tell me what happens with the energy that gets created by braking.
First Law of Energy (First Law of Thermodynamics):

Energy is neither created or destroyed. It can only transform from one form to another .

Edit- I "seem" to run longer using motor brakes than mechanical brakes though the test trucks are different. My ST-RR uses motor brakes while my Revo uses mech brakes but both use the same motor and batteries.


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Last edited by George16; 01.02.2009 at 08:50 PM.
   
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