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06-22-2018, 06:05 AM | #1 |
Quarry Creeper Join Date: Feb 2018 Location: Melbourne Australia
Posts: 390
| Can I run all 7.4v servos at 8.4 volts?
Hi team, I believe all HV servos are designed to run on a 2s lipo. this fully charge is 8.4v my question is can I set my BEC to 8.4V and run the servo within spec? really keen to hear your thoughts thanks for looking |
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06-22-2018, 06:06 AM | #2 |
Quarry Creeper Join Date: Feb 2018 Location: Melbourne Australia
Posts: 390
| Re: Can I run all 7.4v servos at 8.4 volts?
I have a 2290SG
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06-22-2018, 06:19 AM | #3 |
I wanna be Dave Join Date: Jun 2016 Location: Deep in the Everglades
Posts: 5,818
| Re: Can I run all 7.4v servos at 8.4 volts?
Read what the manufacturer specs out at . Set voltage accordingly. If you overvolt, you might let all the blue smoke out, then the magic is gone. I prefer to undervolt for better life, if it said 8.4 max, I will run it at 8.0, I lose a bit of speed and torque, but I spec higher than I need and all works well. Hang up and Drive |
06-22-2018, 06:21 AM | #4 |
I wanna be Dave Join Date: Jun 2016 Location: Deep in the Everglades
Posts: 5,818
| Re: Can I run all 7.4v servos at 8.4 volts? |
06-22-2018, 06:51 AM | #5 | ||
I wanna be Dave Join Date: Jul 2005 Location: North Idaho
Posts: 3,648
| Re: Can I run all 7.4v servos at 8.4 volts? Quote:
Quote:
But, for consistent performance, you want to pick a voltage that will be nominally supplied to your electronics. If you are running 2S, then you want your electronics voltage to be somewhere under the packs nominal voltage, which is 7.4VDC. In this case, I would set my voltage at 7VDC, or down to 6.5VDC, depending on what voltage selections I had available. If you really want to run higher voltage through your electronics, go to a higher voltage pack. Also, if you are sending that higher voltage to all of your electronics, make sure they can take it. Many RXs do not like going above 6VDC, and neither do many cheaper LEDs. | ||
06-22-2018, 07:51 AM | #6 |
Quarry Creeper Join Date: Feb 2018 Location: Melbourne Australia
Posts: 390
| Re: Can I run all 7.4v servos at 8.4 volts?
Thanks, I run 3s on all my rigs so voltage isn’t an issue, but I think I’ll stick to 7.4v for now I appreciate all the input |
06-22-2018, 12:49 PM | #7 |
Rock Crawler Join Date: May 2016 Location: SoWIs
Posts: 618
| Re: Can I run all 7.4v servos at 8.4 volts?
Some servos will smoke from that extra voltage, some will not. Savox generally can accept a little more voltage though, but beware the extra heat. The thing is 8.4v from a battery (when fully charged) will result in higher average voltage than 7.4v from a BEC since there will be almost zero voltage drop. That's the difference between a 6A max vs 100A+ power supply. It should also be noted that servo life will naturally be reduced with more voltage unless it's a brushless motor inside. |
06-22-2018, 12:52 PM | #8 | |
Rock Crawler Join Date: May 2018 Location: USA
Posts: 792
| Re: Can I run all 7.4v servos at 8.4 volts? Quote:
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06-22-2018, 12:53 PM | #9 | |
Rock Crawler Join Date: May 2018 Location: USA
Posts: 792
| Re: Can I run all 7.4v servos at 8.4 volts? Quote:
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06-22-2018, 04:14 PM | #10 |
Quarry Creeper Join Date: Feb 2018 Location: Melbourne Australia
Posts: 390
| Re: Can I run all 7.4v servos at 8.4 volts?
I don't think there is a 6v version of the 2290sg? Sent from my LG-H870DS using Tapatalk |
06-22-2018, 04:39 PM | #11 |
I wanna be Dave Join Date: Jun 2016 Location: Deep in the Everglades
Posts: 5,818
| Re: Can I run all 7.4v servos at 8.4 volts? |
06-22-2018, 06:01 PM | #12 |
I wanna be Dave Join Date: Jun 2016 Location: Deep in the Everglades
Posts: 5,818
| Re: Can I run all 7.4v servos at 8.4 volts? |
06-22-2018, 06:09 PM | #13 |
Quarry Creeper Join Date: Feb 2018 Location: Melbourne Australia
Posts: 390
| Re: Can I run all 7.4v servos at 8.4 volts?
Nope, I was responding to the post referring that all savox hv servos were just normal servos with different marketing. I don't belive there is a normal 6v version of the 2290sg making that statement incorrect. Sent from my LG-H870DS using Tapatalk |
06-22-2018, 06:27 PM | #14 |
Rock Crawler Join Date: May 2018 Location: USA
Posts: 792
| Re: Can I run all 7.4v servos at 8.4 volts? It used to not be marketed as HV.
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06-22-2018, 06:34 PM | #15 |
Quarry Creeper Join Date: Feb 2018 Location: Melbourne Australia
Posts: 390
| Re: Can I run all 7.4v servos at 8.4 volts?
Really, So when it was released it was only specifed to run a maximum of 6v? I did not know that. My apologies. I also have a bunch of other non savox hv servos so was a general question of voltage (even though I did mention the 2290sg......) Sent from my LG-H870DS using Tapatalk |
06-22-2018, 10:35 PM | #16 |
Rock Crawler Join Date: May 2016 Location: SoWIs
Posts: 618
| Re: Can I run all 7.4v servos at 8.4 volts?
I can at least verify their 6v servos work at 7.4v, maybe 8.4v but I can't recall which I tried. Someone claimed a Savox rep said 6v will work with higher voltage and I didn't really need that servo, so gave it a shot. Granted it was a 120oz servo, it didn't even get warm.
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06-22-2018, 10:53 PM | #17 | |
RCC Addict Join Date: Feb 2016 Location: Santa Maria, CA
Posts: 1,751
| Re: Can I run all 7.4v servos at 8.4 volts? Quote:
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06-22-2018, 11:37 PM | #18 |
Quarry Creeper Join Date: Feb 2018 Location: Melbourne Australia
Posts: 390
| Re: Can I run all 7.4v servos at 8.4 volts?
Yeah its a bit odd. Obviously the servo can run 6v. But I run 3s, and have a castle ccbec2.0 so why would I? I just wanted to know if this, and my other hv servos could be run with the bec set at 8.4 volts. Sent from my LG-H870DS using Tapatalk |
06-24-2018, 11:19 PM | #19 |
Quarry Creeper Join Date: Dec 2015 Location: Sutter
Posts: 489
| Re: Can I run all 7.4v servos at 8.4 volts?
Ive ran my 2 yer old savox 1210 at 7.4v via a bec from day one with no ill effects thus far. No idea if there is a performance increase but that’s another story Sent from my iPhone using Tapatalk |
06-25-2018, 12:12 AM | #20 |
Rock Crawler Join Date: Mar 2016 Location: Zagreb, Croatia
Posts: 747
| Re: Can I run all 7.4v servos at 8.4 volts?
There is a pretty linear performance increase in torque and speed with any servo (similar to going higher voltage on an ESC). Now, if it's noticeable, that's another thing |
Tags |
hv servo, servo |
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