6 volts and servo torque
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6 volts and servo torque
Provide the servo doesn't burn out, the torque will be proportional to voltage, so you will get about 25% more torque by going to five cells from four cells.
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Please explain
Vince sez "You will also get less run time, as the voltage goes up, so does the resistance (current draw)."
How does increasing (or decreasing for that matter) the VOLTAGE change the RESISTANCE of anything?
While I understand about the "(current draw)" changing due to the voltage changing, I don't agree with the "so does the resistance" part of your statement.
Correctly stated "As the voltage goes up, so does the current". :thumbup:
And yes, increased current flow will deplete the battery pack faster resulting in "less run time".
How does increasing (or decreasing for that matter) the VOLTAGE change the RESISTANCE of anything?
While I understand about the "(current draw)" changing due to the voltage changing, I don't agree with the "so does the resistance" part of your statement.
Correctly stated "As the voltage goes up, so does the current". :thumbup:
And yes, increased current flow will deplete the battery pack faster resulting in "less run time".
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Re: Please explain
Originally posted by George in TX
[B]And yes, increased current flow will deplete the battery pack faster resulting in "less run time".
[B]And yes, increased current flow will deplete the battery pack faster resulting in "less run time".
I suggest making some real time tests before going one way or the other. I personally use many 5 cell packs but I also use 4 cell packs. The big point is to be sure your gear can handle the volts!
Gary
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Ohms law is exactly what my comments were based on!
Vince, you are correct about Ohms law being real, but I have a feeling that you really don't have a solid understanding of it.
Having taught basic and advanced electronics for many yrs at the Army Signal School at Ft Monmouth NJ to thousands of students, I am very familiar with Ohms law.
I stand by my statement that simply changing the voltage DOES NOT change the resistance or load of the circuit to which that voltage is applied.
Reread my previous post and you will note that we are in agreement about "less run time".
Having taught basic and advanced electronics for many yrs at the Army Signal School at Ft Monmouth NJ to thousands of students, I am very familiar with Ohms law.
I stand by my statement that simply changing the voltage DOES NOT change the resistance or load of the circuit to which that voltage is applied.
Reread my previous post and you will note that we are in agreement about "less run time".
#8
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6 volts and servo torque
I suggest that you go to the following link for comparison purposes using 4.8v and 6v. Select any servo and the torque ratings for the two voltages will be shown.
http://www.servocity.com/Products/Hi...c_servos_.html
No two ways about it, for the same mah rating, a 6 volt battery will give less total flying time than a 4.8 volt pack. You do pay for the extra performance.
Ken
http://www.servocity.com/Products/Hi...c_servos_.html
No two ways about it, for the same mah rating, a 6 volt battery will give less total flying time than a 4.8 volt pack. You do pay for the extra performance.
Ken
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6 volts and servo torque
In testing I found that the 20% increase in voltage produced a 10% increase in current drain. This was with an analog high-torque MG 6-servo setup. I believe this 10% increase would be fairly accurate across the board. Your mileage may vary a little.
A receiver/servo set is a complex load and not well suited to Ohm's law since it's resistance as a system is not linear. To do a theoretical determination, you'd need schematics and quite a bit more math. It's easier to just test for results.
It might help to think of it as a power gain. With increased voltage, a servo will provide more power, but not necessarily with a proportional increase in current. With power being equal to voltage times current, raising either voltage or current will increase power.
A receiver/servo set is a complex load and not well suited to Ohm's law since it's resistance as a system is not linear. To do a theoretical determination, you'd need schematics and quite a bit more math. It's easier to just test for results.
It might help to think of it as a power gain. With increased voltage, a servo will provide more power, but not necessarily with a proportional increase in current. With power being equal to voltage times current, raising either voltage or current will increase power.
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6 volts and servo torque
Originally posted by ftomteen4cat
In testing I found that the 20% increase in voltage produced a 10% increase in current drain. This was with an analog high-torque MG 6-servo setup. I believe this 10% increase would be fairly accurate across the board. Your mileage may vary a little.(snip)
In testing I found that the 20% increase in voltage produced a 10% increase in current drain. This was with an analog high-torque MG 6-servo setup. I believe this 10% increase would be fairly accurate across the board. Your mileage may vary a little.(snip)
Gary
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Re: Ohms law is exactly what my comments were based on!
Originally posted by George in TX
Vince, you are correct about Ohms law being real, but I have a feeling that you really don't have a solid understanding of it.
Vince, you are correct about Ohms law being real, but I have a feeling that you really don't have a solid understanding of it.
Vince
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Re: Re: Ohms law is exactly what my comments were based on!
Originally posted by Vince
I do not doubt your credentials, but I suspect that I am not the one that does not have a good understanding of voltage, resistance, and amperage.
Vince
I do not doubt your credentials, but I suspect that I am not the one that does not have a good understanding of voltage, resistance, and amperage.
Vince
Gary
#13
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6 volts and servo torque
Solution is to get a higher capacity Nimh pack at 6 volts to make up for any decrease in run time...same size & weight pack will have much more capacity in Nimh...that's my easy way of pushing the 6 volts without taking a hit.