Tekin Servos
 

Tekin officially introduced their new line of servos.

T120 all the way up to the T400, supporting everything from 1:10, 1:8 and Crawlers.

Tekin - Servos

Nice servos...

Which torque spec should we be looking at when comparing specs to other brands of servos?

Very good question!

For example the t-120 and t-180 have close to the same speed but one has 50% more torque, at that point why should I buy the t-120? Or the t-250 vs the t-300 which are very close in specs? Are they brushless? I get the gears are CNC metal but are they steel, titanium...? Hope Tekin guys don't take this wrong.

That is a fine question, but I was wanting to know if other servo brands are rated in what Tekin is calling torque or dynamic torque. I've never seen two different torque specs listed on the same servo before.

What's their policy on stripped gears, are they covered under warranty?

It's not clear based on what I'm reading here:

The torque i believe is from a still servo, beginning initial arm movement, and dynamic is while moving through its range of motion.

This is yet to be confirmed by Tekin.

I like the LP servo. Any pricing yet?

The plain/running torque is the maximum weight the servo can move (e.g. the servo lifting a 10kg weight), dynamic torque is stall torque as the amount of force the servo can sustain until it can no longer hold it.

IMO, if it does not explicitly state that it is covered by the warranty then it isn't covered.

Yeah, I tend to agree with this line of thought.... I have to wonder if they will offer any gear replacement sets, not seeing any posted yet.

If they don't offer gear sets then these things better be VERY well priced lol

lol nice side step of the question


so essentially the same thing?

in the case of the T360, it can only lift 382 Oz but but also lift 479? Something doesn't make sense about that. If your servo stalls at 480, why not say its max torque is 470 and forget goofy things like dynamic torque.


Comparing just the T-360 vs a savox 1230SG, the savox will be a better buy unless Tekin can keep the price down but Tekin is very proud of their stuff, so I bet these will be prohibitively expensive.

I should've tried harder to explain myself :) the thing is:
-the t-360 can lift 382oz from the ground and do reps like an exercise but if you power the servo and then attach a load it can hold 479oz because it isn't doing "exercise", just holding it. Once it has to move, the limit is 382oz. Further answering your question, if a manufacturer rated servos for stall then that t-360 would have serious problems steering or braking anything requiring above 382oz of force.

I get what your saying but using something like dynamic torque as a marketing point is misleading. I dont think any other large servo makers use that. I still think savox will offer the better deal, but Tekin does make good products. Just call it 382oz of torque and let everything else be gravy.

Agreed! Most servo manufacturers rate at running torque, particularly those brands you see on the airfield, I use brands trusted at the airfield as rc airplanes are very expensive and any servo that gets their seal of approval is surely good. Also, those brands tend to rate the servos conservatively.

https://www.rctech.net/forum/radio-e...in-servos.html

So, coreless servos.

Randy described the two on Facebook. The lower rating is the stall torque (as in the servo can hold its position up to that much torque). The dynamic torque is how much force would be required to stop the servo dead in its tracks if it was moving at full speed.

Quality brand servos typically use stall torque for their numbers. Cheap brands/knockoffs have been known to use the dynamic torque numbers to inflate their perceived performance. Nothing wrong with including both, as long as people understand what they mean.

One feature I dont see on many servos is the ability to put the extra cabling back into the body of the servo.

Radiopost did this, and I wish savox offered this. Its pretty damn handy feature to have when I really dont want to solder new leads on a tiny board.

We chose to offer two specs to compare side by side with other servo companies. Dynamic is "moving" ratings, compared to "static" torque and speed ratings.

We will offer gear sets in due time. Unfortunately like many things we do not have control of how these are installed. In all of the testing nobody has broken a gear.

I even ran a T190 in my 1/8 Buggy at the Nationals trying to over work, over load, and break it.....it's still in my car.

Any idea on pricing

Ty posted on another forum to expect them in the $135 range a month or so ago. I assume that is still roughly valid.

which other servo company uses both specs? i'm thinking none off the top.

so how are we to know which spec other servo companies use? mud, meet water.

ProTek offers dynamic specs on some but not all of their servos. We offer both for a reason. Right now servo specs are like "C" ratings on batteries. Some are inflated, some may not be.

We felt it was best to offer both to remove any confusion when comparing servos that may offer either.

Those speeds are insane!

How does the setup with Hotwire work? I've not seen an update to accommodate the servos, just wondering what to expect when my T120 gets here :-)

Any idea on when these will be available. Also who will be selling them?

Also, price?

This is just me spitting back info I've seen posted elsewhere, either by Tekin employees, Randy, or others:

Anywhere you can find Tekin ESCs should have them. $150 is the expected street price, so $135 after coupon codes and other promotional offers. The shorty servos are a few bucks less than the full size. Hotwire update is on the way, but getting it through the app store for Apple might take a minute for the iPhone version. Available by Christmas, if we are lucky.

150$ for a servo no better than savox? Is this because it has the Tekin name on it?

I also understand my comment will get crapped on but what makes this servo any better? Because you can plug it into a hotwire? Because it says Tekin?

It's no problem to question the utility of any item to you. It sounds like you don't need anything besides what Savox offers, so there's no reason for you to jump to something more expensive.

When you say no better than a Savox, I assume you are talking the specs listed for torque and speed? While they are probably the only way to vaguely compare servos between brands, there are so many other specifications that aren't listed. Response time, tolerance/play in the gears, case material, accuracy, and software all matter. The Tekin servos use better position sensors, are element/slash proof, and will be upgrade-able with future software updates.

Given that Tekin used solid aluminum cases, the best Tekin/Savox comparison is the $140 Savox servo. For a $10 difference, the Savox still lacks the ability to be updated with software, spin a full 360 degrees, have its center point be programmed at will, and uses a lower tolerance position sensor.

The better comparison would be Futaba's S.Bus2 servo line. They are crazy programmable (you can even plug them straight into their latest radio to program them) and have features through the roof. And most of them are $200+.

As far as the T-120 goes, it also comes with an aluminum servo horn (per the Tekin website), so there's some added value there as well.

Also, I've checked my normal online shops, and have yet to see this as a pre-order, or even listed. I'd love to hear more about a firm release date and/or general availability.

First bolded part: When you make a statement like that, I'm going to need you to back it up. You cant say Tekin uses better materials without doing a component to component break down. I also dont see where Tekin List any of the things you mentioned as a selling point. No mention of response time, tolerance of gears and accuracy. The only thing mentioned on Tekin's website is the software defined features and case materiel. Can you actually prove Tekin uses better position sensors? Is it hall effect or is it a potentiometer, like all servoes use?


Second bolded part: Your going to base a savox to Tekin comparison on just the fact the Tekin has an all metal case? lulz. So should I compare 20 dollar ebay special servos to your 150 dollar Tekin? No way we should compare 2 servos based on specs, then compare pricing. /s

How about a legitimate comparison of the 1230SG to T-440? Both are very close in specs at 6v. The T-440 is rated for higher voltages, full metal case and has some cool software features, but its almost double the price.

My whole point is not to crap on Tekin stuff, I use their motors and ESC but how can they justify the insane cost when they dont really add any need to have it features. Your also going to have a mini - computer in your servo, so extra failure point and another item to program.

In the first bolded part, I was just listing additional factors for all servos that the speed and torque specs on the box don't show that have an affect on the quality and price. I never said the Tekin had better specs in all regards. I said Tekin was better than Savox when it came to the position sensor (listed as digital encoder in the specs. Savox uses a potentiometer which is inferior), are element/splash proof (listed right in the specs), and will have software updates (listed in specs). Everything I claimed was right in the specs.

Ok, then ignore the aluminum case that many people prefer because plastic ears break/wear over time. Everything else stands. Specs are similar to their $99 servos but you still can update the software, spin a full 360 degrees, have its center point be programmed at will, uses a better position sensor, can run HV, and are backed by a 365 day warranty. I find value in those options on top of the aluminum case.

The Savox servo you listed has a larger form factor. Just saying. :cool:

I had to look up what Tekin is calling digital magnetic position encoder, Its a hall effect sensor(For any one wondering). I'm sure this is because Tekin decided to do 360 degree rotations, not because of some altruistic purpose.

Come on, you can come up with better selling points than a 365 day warranty. Every servo comes with that, and its only for manufacturer defects. All servo's from reputable company have that. I'm also pretty sure its industry standard to be element/splash proof for most higher end servos. I do like being able to program center, but how many servo's actually loose center?

Honest question, how many servos when properly installed have had the ears break off or wear out?

You stated I simply asked for you to prove these things. Specifically the bolded parts, which you state make the Tekin superior in some way.

FYI here is an example of a cheap servo that uses the same "superior" technology as Tekin's position sensors Cheap Servo

my original question still stands, everything you've told me is just marketing stuff. Can you even tell me the type of gears used in the T-440?


Edit: I want to add, the only reason I keep using Savox is because its the servo's I use and are known to me.

Can you explain that a little better? I'm very interested in what that means.

Story time:
I’ve owned 20+ different servo models from 6+ brands over 15 years. 6 Savox, 7 Futaba, 3 Hitec, 2 Airtronics, 2 Bluebird, 2 Ace, and several cheap brands among others. My favorite servos out of all of them were the BLS451 I mentioned above. Lasted forever, relatively speaking. The specs? At 4.8 volts: 0.13 seconds and 118 in-oz. Absolutely pathetic compared to what the others listed on the box. They were the absolute best on the track. I even ran them in 1/8 buggy with no issues on high voltage. I don’t put all my stock in the specs listed on the box. There is more that makes a servo feel accurate and connected on the track.

Currently I have a Savox servo in my 2wd and a Futaba S.Bus2 servo in my 4wd. The futaba is rated as slower for transit time, but I guarantee it has a lower latency and is more accurate because it feels better on the track and looks faster when playing with the servo on the workbench. I wish I could afford Futaba servos in all 4 of my cars, but I can’t. Additionally, I usually install my personal transponder on top of the servo. I had to move the one that was on the Savox because I was getting missed laps if I turned the steering wheel as I went over the timing loop. Stared right at the dB numbers coming from the encoder and they would drop if the servo was moving. No issue with the Futaba doing the exact same test. Both cars are identical otherwise.

Tekin servos appear to have all the top end electronics as the Futaba S.Bus servos, but for $70 less than the S9373SV. If that ends up not being the case, I’ll let the world know. To me, they are a bargain if what they claim for accuracy is true. I buy all my electronics for the long run. Heck, my RSX in the 2wd is closing in on 5 years old since I got it when they first came out.

Just like the RSX has had new capabilities added over the years since it was first released, why wouldn’t this apply to the servos?

you guys missed the most important thing.

There Sexy, Savox servos are far from sexy.

Tekin, I've given you some shade before regarding the prices of some products but I am pleased with the current assumed pricing of these new servos :) I've only ever spent $110 at most for a servo but I'd be willing to throw a few extra bucks on the table to try one of these new units out.

Again, some people complaining about $150 price tag comparing to savox. Guess what... My savox SB2284 (2 of them) and SB2283 are $140 servos. I didn't pay that for them but in comparison they are in the same price range. I am willing to try the Tekin low profile servo o my EB410. Looks like a very nice quality servo. If they make spare gear sets available that would be even better.

My point is Tekin used that method because of the 360 degree rotation, its not superior technology for something like a servo. Check out this link where people way smarter than me discuss encoder vs potentiometer. To sum it up however, something like a savox 1256TG has better resolution per degree of movement than Tekin's encoder. You can even do the math, 4096 of resolution over 200 degrees of movement. Thats .0488 degree per 1 value on the potentiometer.


so lets sum that up.
its programmable (agreed)
aluminum case (agreed)
better gears (which I'm waiting for you to prove)
response time ( Again lets see some proof to this one)
Better position sensors ( not true)


I was just interested in what that means for this servo. ESC has a few more functions than a servo, can any of the servo's do data logging?