13Likestop shelf servos
05-03-2022 | 09:09 AM
#1
Thread Starter
Tech Adept
Joined: Sep 2020
Posts: 223
top shelf servos
Do most servos use potentiometers?
This sales pitch from Tekin is interesting.
https://www.teamtekin.com/servos.html
This sales pitch from Tekin is interesting.
https://www.teamtekin.com/servos.html
Our servos use Digital Magnetic Position Encoding (DPE) rather than a standard
potentiometer, which gives Tekin servos industry leading accuracy, linearity and consistency.
Precise linear movement through the entire motion range with less than .2 degrees
of deviation from start point to end point make Tekin the superior performance product.
Low deviation DPE technology translates to pinpoint accuracy not found in other
potentiometer servos, which tend to wander and center poorly and get worse as they age.
Tekin is built to last at peak performance.
Potentiometer servos can be up to seven degrees non-linear from
end point to end point, creating a disconnected feel from your transmitter.
Tekin servos eliminate this disconnect, giving you a linear feel
and more precise control over your servo movement and position.
Potentiometer performance drifts due to many variables; heat, age, component quality, etc.
DPE is a rock-solid, repeatable and consistent technology bringing an unmatched consistency to Tekin servos.
potentiometer, which gives Tekin servos industry leading accuracy, linearity and consistency.
Precise linear movement through the entire motion range with less than .2 degrees
of deviation from start point to end point make Tekin the superior performance product.
Low deviation DPE technology translates to pinpoint accuracy not found in other
potentiometer servos, which tend to wander and center poorly and get worse as they age.
Tekin is built to last at peak performance.
Potentiometer servos can be up to seven degrees non-linear from
end point to end point, creating a disconnected feel from your transmitter.
Tekin servos eliminate this disconnect, giving you a linear feel
and more precise control over your servo movement and position.
Potentiometer performance drifts due to many variables; heat, age, component quality, etc.
DPE is a rock-solid, repeatable and consistent technology bringing an unmatched consistency to Tekin servos.
05-03-2022 | 06:57 PM
#2
Tech Addict
Joined: Jan 2003
Posts: 569
From: Montréal, Qc
Never used Tekin servos so I can’t talk about them. What I can say, though, is that I tried many different brands over the years and I did see/felt differences between brands.
My favourite has been KO Propo. For some reason, the feel of their servos has always been my favorite. They are sturdy and are very accurate, plus you can modify the settings if you want to.
Next would be Highest servos. Had one in my Awesomatix touring car. Worked flawlessly didn’t develop slop over time, very solid servo.
Next would be Sanwa servos. They weren’t bad, but they developed slop very fast and felt strange, like awkward while driving.
Finally, Savox servos… had a few of them. They are fine at first but they fail quickly and developed lots of slop. I have been disappointed by savox servos every time I used one.
Haven’t tried Futaba servos recently, so I can’t really give you a current opinion. 15 years ago, when I had a couple of them, they worked good. Quite sturdy, but then again, it was long ago and I can’t speak for recent servos.
hope this helps,
Martin Paradis
My favourite has been KO Propo. For some reason, the feel of their servos has always been my favorite. They are sturdy and are very accurate, plus you can modify the settings if you want to.
Next would be Highest servos. Had one in my Awesomatix touring car. Worked flawlessly didn’t develop slop over time, very solid servo.
Next would be Sanwa servos. They weren’t bad, but they developed slop very fast and felt strange, like awkward while driving.
Finally, Savox servos… had a few of them. They are fine at first but they fail quickly and developed lots of slop. I have been disappointed by savox servos every time I used one.
Haven’t tried Futaba servos recently, so I can’t really give you a current opinion. 15 years ago, when I had a couple of them, they worked good. Quite sturdy, but then again, it was long ago and I can’t speak for recent servos.
hope this helps,
Martin Paradis
05-03-2022 | 08:37 PM
#3
Thread Starter
Tech Adept
Joined: Sep 2020
Posts: 223
I used KO many years ago. I liked it.
How do they compare, latency wise, to Futaba and Sanwa?
Again the sales pitch is interesting.
How do they compare, latency wise, to Futaba and Sanwa?
Again the sales pitch is interesting.
By combining this servo with EX-NEXT's XT mode, KO Propo
achieved an unprecedented ultra-fast response as if you were in the drivers seat.
servo will function with standard transmitters as well.
However, the communication processing time between the receiver and the servo is compressed to 1/4.
This compressed communication will lead to a different feel when compared to serial input.
achieved an unprecedented ultra-fast response as if you were in the drivers seat.
servo will function with standard transmitters as well.
However, the communication processing time between the receiver and the servo is compressed to 1/4.
This compressed communication will lead to a different feel when compared to serial input.
05-04-2022 | 09:35 AM
#4
Tech Addict
Joined: Jan 2003
Posts: 569
From: Montréal, Qc
Martin Paradis
05-04-2022 | 09:51 AM
#5
. I've been mainly using Sanwa servos for years and never had any problems with them (in fact, I'm quite happy with them). Does that make them better or worse than other manufacturers? No.
05-04-2022 | 06:41 PM
#6
Tech Addict
Joined: Jan 2003
Posts: 569
From: Montréal, Qc
I'm not saying otherwise, but I don't think that this one experience is enough to make any judgement on this issue at all . I've been mainly using Sanwa servos for years and never had any problems with them (in fact, I'm quite happy with them). Does that make them better or worse than other manufacturers? No.
. I've been mainly using Sanwa servos for years and never had any problems with them (in fact, I'm quite happy with them). Does that make them better or worse than other manufacturers? No.
05-04-2022 | 08:05 PM
#7
Technology kinda looking like a Hall effect sensor and a crank position timing wheel on a car engine. Seems like a good idea.
if it centers the servo more consistently I am in!
I am not sure if there are negatives to having no stops on a servo and just relying on holding power.
if it centers the servo more consistently I am in!
I am not sure if there are negatives to having no stops on a servo and just relying on holding power.
05-10-2022 | 06:24 AM
#8
Thread Starter
Tech Adept
Joined: Sep 2020
Posts: 223
Is Tekin the only servos without potentiometers?
05-10-2022 | 03:32 PM
#11
05-10-2022 | 10:55 PM
#14
Tech Lord
Joined: Aug 2007
Posts: 14,050
From: Holland
Within the RC there is almost no true/honest advertising.
The thechnology of an magnetic potentiometer is old, here an article of 7 years ago
https://www.electronicdesign.com/tec...potentiometers
The thechnology of an magnetic potentiometer is old, here an article of 7 years ago
https://www.electronicdesign.com/tec...potentiometers
05-17-2022 | 11:02 AM
#15
Team Tekin
Joined: Mar 2005
Posts: 1,199
We do not claim to be the first or only servo using digital magnetic encoders for position. The rest of the world outside of RC has been using them for a long time and our market had not gone there due to cost and complexity. Servos really had not changed in decades and we were one of the first to use them and I think one of the very very few adding the higher level control technology around it to really make it work well. Its an esc and a motor which we happen to know something about from over 35yrs of making them and constantly improving them. Just changing from a potentiometer to a magnetic encoder is not the whole story... Most servos are dumb and just go left and right regardless of how they measure position.
Gears and tolerances is also part of the art. Our servos literally coast when you push the arm with your finger. Check out my FB page for a video posted back on Nov 3, 2021.
Programmability is also important, Not just a few basic settings but really being able to dial in a servo for feel and response, and some error codes for diagnosing problems when they do happen.
Response as in radio input to servo reaction is severely overrated. Most would be faster and more consistent with a less twitchy response and slower speeds in general. Little known secret some talented people turn down the radio signal rate to its slower setting in onroad to avoid scrub wiggle in straight line.
What really matters is the servo goes to where the radio wheel is and does not overshoot, panic, and start the other way. Feels 'connected' and less counter steer iis the most common comment we here from people.
You can often tell how dumb a servo is by the amp draw and many are silly high with abrupt spikes.
Gears and tolerances is also part of the art. Our servos literally coast when you push the arm with your finger. Check out my FB page for a video posted back on Nov 3, 2021.
Programmability is also important, Not just a few basic settings but really being able to dial in a servo for feel and response, and some error codes for diagnosing problems when they do happen.
Response as in radio input to servo reaction is severely overrated. Most would be faster and more consistent with a less twitchy response and slower speeds in general. Little known secret some talented people turn down the radio signal rate to its slower setting in onroad to avoid scrub wiggle in straight line.
What really matters is the servo goes to where the radio wheel is and does not overshoot, panic, and start the other way. Feels 'connected' and less counter steer iis the most common comment we here from people.
You can often tell how dumb a servo is by the amp draw and many are silly high with abrupt spikes.