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GriffinRU
RC-Monster Aluminum
 
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Posts: 748
Join Date: Oct 2005
03.02.2007, 04:50 PM

Quote:
Originally Posted by Serum
Nice theory, but since they also included the Delta and the Wye windings, it would make the calculations far more complicated than you are describing. PLUS they DO use timing in their numbers. This STILL doesn't explain why they don't use a set number of voltage. (this is variable as well) I know one reason why this number would be variable, but it simple makes no sense to 'assume' a resistance of a battery, since this is variable as well..

And now we are getting deeper into it; why are brushless motorcans not made from plastic? aluminum is magnetic active when there is a magnetic rotor is turning in it. (even a U, or an unclosed piece of aluminum has this 'problem') I think plastic motorcans would help making a brushless motor even more efficient.

but here is the big q;

What makes you think/presume they use calculated data instead of measured? agai'n; Daf mentioned they use a propellor to measure the power; the other numbers that you call measured is static data.
Delta or Wye is covered by the same constants. Same motor with Delta wiring will have different constants if you wire it as Wye.

Can material will make big difference if it would be close to magnetic field, for current configurations we talking about fractions of %, which still loss but so small.

I am not following you about constant V, You can dyno motor at constant power, but then it would be not easy to read data. And actually there are cases when you would like to test motor under constant power, but you talking about voltage.

As for Q, click on any cell in calculated area and then check in entry field, you will see formula on how particular cell data was obtained.
   
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