07-04-2018, 02:20 PM | #641 |
Rock Crawler Join Date: May 2018 Location: USA
Posts: 792
| Re: What the newest cheap servo hotness? |
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07-06-2018, 09:55 PM | #642 | ||
Rock Crawler Join Date: May 2016 Location: SoWIs
Posts: 618
| Re: What the newest cheap servo hotness?
I've been thinking about my earlier comment about high-pressure grease. It was mostly made in jest, but I'm thinking that could be a thing. Similar problems result if you use the wrong grease in an automotive axle/bearing or oil in a diff/transmission. I'd recommend people with 46kg JX's clean the stock goo off any try some good synthetic H-P or moly grease (not lithium grease). Quote:
Titanium is only good when it comes to weight or reactivity. It can be about as strong as steel but lighter, 5% weaker & 45% lighter for typical alloys. If the size of the part is unrestricted, aluminum/magnesium/beryllium can all be lighter & stronger. For a gear where dimensions will be the same & high-performance alloys of both are used, the steel will ALWAYS be stronger - and more ductile, shock resistant, wear resistant, harder, etc. Even so, Inconel makes them ALL look silly. But I digress. Quote:
For reference, the same test jig recorded 550oz/in for the Turnigy 959v1 at 5.7v & 498oz/in for the v2 while the G13 needed 15.8v to hit 566.7oz/in. The Achilles heel of the cheap servos seem to be the gears, so I really hope to never hear of a G13 gear failure - or at the very least zero-hassle repairs of any gear probs. Last edited by Hydrocarbon92; 07-06-2018 at 10:18 PM. | ||
07-07-2018, 02:44 PM | #643 | |
Rock Crawler Join Date: May 2018 Location: USA
Posts: 792
| Re: What the newest cheap servo hotness? Quote:
This times 100. Much more detailed statement explaining what I meant by the servo under performing. | |
07-07-2018, 04:21 PM | #644 | |
RCC Addict Join Date: Jan 2007 Location: Bouldertown
Posts: 1,554
| Re: What the newest cheap servo hotness? Quote:
The difference between our servo and the others is that ours runs very cool. You can come to a stall 20 times and hold it running 4s and the servos do not get hot. Unlike many others. The hotter the servo gets the more power it looses. Ours stay consistent. As far as " Achilles heel of the cheep servos". you must believe all servos are cheap with that statement. Because anyone who has any substantial experience using servos knows that no gear set in indestructible. We are very confident with the way our servos are designed. And our customers back that up. | |
07-07-2018, 04:43 PM | #645 |
RCC Addict Join Date: Aug 2014 Location: Virginia, Near DC, USA
Posts: 1,607
| Re: What the newest cheap servo hotness?
So when you say "dynamic torque", you mean the amount of torque the servo can transmit while the motor/gears/hub are rotating? I guess that's good to know, but why would it be different from the amount of torque the servo can transmit when stalled? The servo is powered by an electric motor, so the torque should be the same regardless of whether the motor is able to rotate or not.
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07-07-2018, 06:00 PM | #646 |
Rock Crawler Join Date: May 2018 Location: USA
Posts: 792
| Re: What the newest cheap servo hotness?
That seems to spit in the face of the fact that motors have optimal operating temperatures, because it isn’t as simple as cool == better...
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07-07-2018, 06:53 PM | #647 |
RCC Addict Join Date: Jan 2007 Location: Bouldertown
Posts: 1,554
| Re: What the newest cheap servo hotness? |
07-07-2018, 08:08 PM | #648 | |
RCC Addict Join Date: Jan 2007 Location: Bouldertown
Posts: 1,554
| Re: What the newest cheap servo hotness? Quote:
Last edited by holycaveman; 07-07-2018 at 08:18 PM. | |
07-07-2018, 08:59 PM | #649 |
RCC Addict Join Date: Feb 2016 Location: Princeton, North Carolina, USA
Posts: 1,499
| Re: What the newest cheap servo hotness?
Bummer...looks like the Promodelers are on b/o for awhile. Just because I decided to get one. |
07-07-2018, 10:54 PM | #650 | |
Rock Crawler Join Date: May 2016 Location: SoWIs
Posts: 618
| Re: What the newest cheap servo hotness? Quote:
https://www.eetimes.com/document.asp?doc_id=1273988 In any case, your website only lists stall torque. It's also pointless to tell us dynamic torque but not stall torque when every other MFG does the opposite. Imagine if Ford measured how much force it takes to rip off the trailer hitch, then listed that as "tow rating". I understand everything can break, but for 3-4 times the price I'd expect 3-4x less broken gears or replacements that are 3-4x cheaper. $18 for a gearset is 1/3 the price of an entire JX servo. | |
07-07-2018, 11:47 PM | #651 |
Rock Crawler Join Date: May 2018 Location: USA
Posts: 792
| Re: What the newest cheap servo hotness? |
07-08-2018, 06:00 AM | #652 | |
RCC Addict Join Date: Jan 2007 Location: Bouldertown
Posts: 1,554
| Re: What the newest cheap servo hotness? Quote:
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07-08-2018, 06:31 AM | #653 |
RCC Addict Join Date: Jan 2007 Location: Bouldertown
Posts: 1,554
| Re: What the newest cheap servo hotness?
I understand your concern as far as static vs stall. And they way our website read could be a bit confusing. Regardless its one of the strongest on the market. And the way its designed it will keep pulling the max torque at a stall without failure. All the best. |
07-08-2018, 06:56 AM | #654 |
RCC Addict Join Date: Feb 2016 Location: Princeton, North Carolina, USA
Posts: 1,499
| Re: What the newest cheap servo hotness?
All right, I have a G13 on pre order for the Bomber...let's see whatcha got ;) Sent from my SM-G930R4 using Tapatalk |
07-08-2018, 08:04 AM | #655 |
Rock Crawler Join Date: May 2018 Location: USA
Posts: 792
| Re: What the newest cheap servo hotness? |
07-08-2018, 08:08 AM | #656 |
RCC Addict Join Date: Feb 2016 Location: Princeton, North Carolina, USA
Posts: 1,499
| Re: What the newest cheap servo hotness? |
07-12-2018, 12:27 AM | #657 |
RCC Addict Join Date: Feb 2016 Location: Santa Maria, CA
Posts: 1,751
| Re: What the newest cheap servo hotness?
I ordered a ds3218 for $12.75 shipped from ebay this evening. That 15% off coupon was enough for me to stray from my equally cheap go-to mg958, mostly because it will be here in a few days, instead of a few weeks as when shipped from China. This will be replacing a Traxxas 2075 on a Slash with 2.2 Ripsaws, so more than doubling the torque, and a few hundredths of a second faster will both be appreciated.
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07-12-2018, 12:45 PM | #658 | |
Rock Crawler Join Date: May 2018 Location: USA
Posts: 792
| Re: What the newest cheap servo hotness? Quote:
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07-12-2018, 01:03 PM | #659 |
I wanna be Dave Join Date: Jun 2016 Location: Deep in the Everglades
Posts: 5,818
| Re: What the newest cheap servo hotness? |
07-12-2018, 01:11 PM | #660 |
Moderator Join Date: Aug 2017 Location: Readsboro, VT
Posts: 2,053
| Re: What the newest cheap servo hotness?
My Slashpede 4x4 is still on the original servo, despite having broken almost every other part on the truck.
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