Can a steering servo be too fast?
#16
servos are more than specs, they are also about feel.
If you try a Ko servo and any other brand except Futaba brushless, you will be blown away at how much feel you have. It is hard to describe unless you drive it
If you try a Ko servo and any other brand except Futaba brushless, you will be blown away at how much feel you have. It is hard to describe unless you drive it
#17
I second that, had a Futaba brushless servo in my buggy, changed to a Team Orion servo because it was faster, but I eventually changed back to the Futaba servo because it just felt better. Hard to explain.
#18
I have talked to several of the best drivers in my country racing 1/8 buggy, and they said that going from at slow servo (above 0,11s) to a fast servo (under 0,8s) gave them more control and enabled them to counter steer in situations where a slow servo would not react fast enough.
#19
On a muggy, truggy ,mbx7te, would the 450 oz-in of signature series radio post servo be enough torque , I like the speed of .07 and if its too twitchy I could expo it out or slow it down with dx4s transmitter , its too bad that " protek 170t servo " is 630 oz-in but .11 for speed, until I read this post I thought that was fast, im thinking the radio post servo will have to do.
#21
I have had Savox and Hitec but decided to try out a Bluebird servo from HK for my D8 after talking to some of the fly guys in my area. The price was right, the specs were good and after installing a Castle BEC, one word....wow.
Some of you guys can say what you want about a Taiwan made servo, this thing is awesome.
http://www.hobbyking.com/hobbyking/s..._10ec_74g.html
Some of you guys can say what you want about a Taiwan made servo, this thing is awesome.
http://www.hobbyking.com/hobbyking/s..._10ec_74g.html
#23
I have raced all summer with the sig series in a mbx7te truggy , its not twitchy at all, and i agree with the "gets you out of a jam quick " i find it makes it easiervto correct drifts and geting completly side ways when you get rubbed and land all messed up, a quick right with some power and -'" BAM'"- you back in the race. Now all my other trucks seem sluggish, "" ps- it also helps when your truck can actually turn its wheels at high angle, bottom line..... radio post for me all the way!
#24
Tech Adept
Joined: Jan 2014
Posts: 157
Hey guys,
When the topic comes to good servo, i always heard how smooth radiopost servos are. So, i wondered and take a look at its specs from absolutehobbyz. Then, i realized those servos use 32 bit controllers which (i assume)makes them smoother than 12 bit servos like Savox due to significant increase in resolution. I again assume, it didnot make huge difference if you are using a slow servo under 0.15sec/60 degrees. However, as servo speed increases, rate of change in angle for each step input affects controllability of the car hugely from 12 bit to 32 bit. Therefore, people who uses very fast high resolution steering servo may not feel his car as twitchy as low resolution one.
Correct me if i am wrong.
When the topic comes to good servo, i always heard how smooth radiopost servos are. So, i wondered and take a look at its specs from absolutehobbyz. Then, i realized those servos use 32 bit controllers which (i assume)makes them smoother than 12 bit servos like Savox due to significant increase in resolution. I again assume, it didnot make huge difference if you are using a slow servo under 0.15sec/60 degrees. However, as servo speed increases, rate of change in angle for each step input affects controllability of the car hugely from 12 bit to 32 bit. Therefore, people who uses very fast high resolution steering servo may not feel his car as twitchy as low resolution one.
Correct me if i am wrong.
#25
A servo that is too fast is perhaps the best way to make your car difficult to drive. I run our torque version servos and still slow them down with my radio. You can driver harder and mistakes happen slower.
You might be surprised how often an ill handling car can be fixed by simply slowing the servo down.
You might be surprised how often an ill handling car can be fixed by simply slowing the servo down.
#26
YEAH Marty!!!! Yes, a lot of times I watch guys with 1/8 all over the place on the track. They say "my tires are bad", "oil in the diffs are wrong", etc... its really that the servo is too fast, or voltage is cranked up too. A faster servo is only better if you can really use it properly. Some of us can not (I admit it - I have mine turn down to 70).
#27
I don't think the posted specs are all on the same level. If a servo had upwards of 500+ oz of torque then it should be very noticeable in the vehicle, from what I have seen they are not. Personally I trust KO and futaba, hitec a are great but their slow speed is an actual value.
#28
It would only be noticeable if the servo you were using didn't have enough torque. If it only takes 120 oz/in to move the wheels easily and accurately and you're using a 200 oz/in servo then a 5000 oz/in servo is going to make no difference at all as long as all else is equal.
#29
R/C Tech Elite Member
iTrader: (12)
Joined: Apr 2014
Posts: 625
From: Atlanta, Ga
Doesn't anyone use expo in your radio? I've been running a Protek 170S at 7.4 volts in my etruggy and like it so much that I just upgraded my ebuggy to the same servo this weekend. I was running an AE 1015 in the buggy. But I run some expo on both so I get a little more precise control around center but heavier corrections go from my hand to the front wheels as fast as possible.
-Chris
-Chris




