Best RC Crawler Servo

Best RC Crawler Servo: Great Control Ensured?

Introduction

“Damn, since when was my car’s handling so shoddy”. Well, issues like swerving and flipping are common in RC cars. Most commonly this is down to faulty control mechanisms.

As a result, your RC cars will go through a lot of handling problems. Now, if you can’t control your car then what’s the point of driving one. This is a problem that needs to be addressed ASAP.

This begs the question, how do you rectify this problem? That’s where our post on the best RC crawler servo comes in.

But don’t worry our research team spent hours looking for the best candidates for this list. We are confident that their effort wasn’t in vain, since they came up with a thorough post. 

Along with a top 5 list of the best RC servo, we’ve introduced a buying guide too. This will show you what to watch out for before buying one.

Now, if you are ready we can get things started-

Comparison Table

Product Overview

First and foremost, allow us to present you to the ZOSKAY’s DSSERVO with coreless motor, our day’s top pick. But how did it manage to take first place? Let’s find out 

First and foremost, we must discuss the torque of this servo. It has a weight range of 20 kg-cm (402 ounce-inches) at 5V, to 35 kg-cm (489 ounce-inches) at 7.4V, which is the highest of the bunch.

They are capable of providing sufficient power to RC vehicles. The servo can also spin to a maximum of 270 degrees. As a result, it may produce greater power than standard servos on the market. 

On top of that, this servo is equipped with twin ball bearings and an advanced potentiometer. All of these components work together to improve the servo’s accuracy. 

Furthermore, the servo is housed in a CNC aluminum alloy casing. This keeps the servo cool while it’s working. Finally, it’s water-resistant.

Pros

  • Water-resistant and lasts long
  • Offers a low Noise and Vibration
  • High Torque Rating
  • Excellent power provision for the motor
  • High Turning Angle  

Cons

  • Doesn’t come with an extra servo arm 

Product Overview

In second place we have the ZOSKAY DS3218 metal gear servo. As you can see that ZOSKAY has produced a lot of reliable servos down the line, and this is no exception. So let’s look at some of its features, shall we?

For starters, it has a DC motor which is the most cost-effective way to go about for less demanding conditions. It also has an IP67 waterproof rating which allows the servo to be weather-proof.

The DS3218 is also compact despite it being the heaviest. This makes it very user-friendly as it’s easy to install. 

Its bulkiness is partly due to ZOSKAY not cutting any corners on the gear quality. All of the gears and internal cogs are comprised of heavy-duty metal. This makes it perfect for your crawlers as metal gears are the most durable.

Other than these qualities, the DS3218 has a maximum of 20 kg-cm rated torque, with speed ratings of 0.15s at 5V and 0.13s at 7.4V.

Pros

  • Easy to mount and install 
  • Highly durable and weather-resistant
  • Decent torque and speed

Cons

  • It’s very heavy and may strain your crawler

Product Overview

The ANNIMOS Digital RC servo comes in third on our list and officially ends the race for the top 3. If you’ve heard of ZOSKAY you’ve also probably heard of ANNIMOS too. These are pretty well-known servo brands in the market.

The ANNIMOS has an operating voltage range of 4.8-6.8 Volts. Its speed rating is 0.13-0.15 seconds at 6.4 and 5.0V respectively.

Its torque is also pretty decent and it ranges from 21-25 kg-cm at the corresponding voltage ranges of 5-6Vs. 

This hobby-grade servo is also the most adaptable of the bunch!

It has an all-metal gear train, digital control electronics, and two ball bearings on the output shaft for decreased friction. As well as simple access to the rest-point adjustment potentiometer, making it ideal for robotic applications.

Pros 

  • Decent durability
  • Very versatile servo fits in most crawlers
  • Comes with a high quality, adjustable metal servo arm

Cons

  • Seizes up sometimes

Product Overview

Next, we have Powerhobby’s Coreless Gear Servo. Now, this servo is perfect for crawlers, which is why this made it on our list. Scale crawlers, 1/8 1/10 monster trucks, 1/8 1/10 2WD and 4WD buggies, and 1/8 scale buggies and trucks are all ideal candidates. 

This servo is Waterproof to a depth of 1 meter, allowing you to drive in the rain, puddles, snow, and muck. Patented gear design allows it to be highly reliable and long-lasting. Heat dissipation is aided by the use of a full metal casing.

The servo is also perfect for high voltage outputs as its voltage rating is between 4.8-8.2V. However, its speed is a bit slower compared to the others within that same voltage input. For example, it has a 0.16 second response time for 6V.

The Powerhobby sacrifices its speed for its torque, with a maximum torque rating of 445 oz-inch (32.04 kg-cm). This is when it is supplied with an 8.4V input.

Pros

  • It won’t add a lot of weight to the vehicle
  • Has standard durability
  • Easy to install
  • High Torque rating

Cons

  • Response time is slower compared to the rest

Product Overview

Last but not least, we have the AGFRC Coreless Metal-Gear servo. Now, even being the last one on the list, it did beat a lot of worthy servos. Let’s take a look at those features that earned it the last spot-

For starters, the AGFRC is a brushless motor. This means that it’s a high-performing servo that lasts very long. Its 32 kg torque rating is a testament to that.

Next, we have the CNC aluminum casing. This allows it to dissipate heat in the most efficient way possible. Its magnetic angle sensor plays a key role in its durability as there’s no scope for frictional wear & tear.

Its torque ranges from 22 kg-cm to 32 kg-cm for the voltage range of 4.8-8.4V. However, it is on the slower side of the motors. Its speed ratings are 0.18 secs for 4.8V and 0.135 secs for 8.4V.

Pros

  • Dissipate heat easily
  • Highly durable and waterproof
  • Comes with an accessory kit

Cons

  • Requires higher voltage for standard turning speed

Buying Guide

Even if you’re an RC crawler fanatic, chances are you don’t know much about servos. Servos are often of the most critical components that are overlooked when it comes to performance.

This is why it’s important to know which factors are important in a Servo’s Performance.

Size Matters: If It Doesn’t Fit, Get Rid Of It

Now, servos come in different shapes and sizes depending on your vehicle’s mount size. RC Crawlers that require a greater clearance would have a higher height for the servo motor.

Now the standard RC servo dimensions are 40mm in length, 38 mm in height, and 20 mm in width. These normally fit all 1/10 and 1/8 scaled RC cars and crawlers.

Voltage Rating And Power Supply Type: What It Entails?

The next factor you need to consider is what voltage does the Servo support. Today the minimum standard starts from 4-4.8V and upwards. 

The higher the voltage, the higher the power generated by the motor. However, it’s not wise to use a higher voltage than the designated one. This may cause the servo to be damaged permanently.

Next, we have the power supply line of the servo. Normally an ESC (Electronic Speed Controller) changes the PWM signal of the radio receiver and drives the servo’s motor. 

It does this by providing the necessary power needed to run the motor and not more than that.

BEC is an abbreviation for Battery Elimination Circuit. It’s simply a fancy term for a voltage regulator, which reduces the voltage of a LiPo battery pack’s main battery by converting it. 

Also, the BEC is normally incorporated within the ESC, and it eliminates the need for a separate battery to power the servo.

But if you’re hell-bent on powering in the servo. There are direct powered supply lines for servos. They have a normal signal wire along with an extra power wire which is used to feed the Servo directly, without conversion.

Torque And Speed Rating: Why It Matters?

These are the most boldly written factors written on the servos. Let’s look at what these mean, shall we-

In simple terms, torque rating is how much weight the servo can pull off the ground. It’s a simple measure of the motor’s turning power. The normal standard measure is kilogram centimeters (kg-cm) and in some cases ounce inches (oz-in).

Next, we have the speed rating. This is basically how quickly the servo turns 60 degrees side to side. The standard time is 0.9 seconds but faster servos such as 0.1 seconds are common nowadays too.

Speed ratings are important to consider if you’re into racing RC not for crawlers, for the sharp cornering. For crawlers, higher torque is more important as it deals with maneuvering in uneven terrain.

The Servo’s Casing And Make

Servo casing for RC crawlers is more likely to be made of metal. These make it sturdy and quite durable, which is perfect for the outdoors.

A cheaper but less durable substitute for these is servos with plastic casings. These are at the fraction of the cost of metal ones. And they offer pretty decent protection.

The makes of the gears affect the performance of the servos. Plastic gears are cheaper but least likely to absorb impact well. This makes the servos with a metal making better suited for RC crawlers, as they deal with the outdoors more.

Motor Type: Coreless, DC, Or Brushless?

Electric engines come with a variety of servos, the most well-known of which are DC, coreless, and brushless. DC engines are the most cost-effective and ideal for less demanding applications.

Coreless Motors specialize in increased power and dependability, as well as the capacity to change course more quickly and precisely. This makes it ideal for racing RC vehicles for dynamic turning.

Brushless engines create extreme force, faster force, faster reaction, more production, and they last the longest. These make it the perfect candidate for the harsh offroad demands.

FAQs

Question: What’s the function of an RC servo?

Answer: The servo is the device that controls the steering of an RC car and the throttle on IC-engined automobiles. They come as a single unit with all of the electronics needed to operate the motor as well as a gearbox that connects to the output shaft.

Question: Can I tweak my servo’s speed as per my wish?

Answer: Not precisely, no. The first thing to keep in mind is that servos are not speed controlled by default. You’re giving a location signal to the servo, and the servo is attempting to reach that position as quickly as feasible. However, by sending the servo a series of locations that lead to the end position, you can slow it down.

Question: What are the applications for a stepper motor and a servo motor?

Answer: To summarize, stepper motors are an excellent choice for situations requiring low speed, poor acceleration, and low precision. Servo motors are a superior option for systems that require a lot of speed, acceleration, and precision. The cost and complexity increase as a result of this trade-off.

Bottom Line

Well, this was all on the best RC crawler servo that we could find out about. Hopefully, we’ve already set your eyes on the servo you need for your crawler. And we hope, our post came to aid in deciding which one to buy.

In any case, we’ve fulfilled our promise to alleviate your handling problems for your crawlers. By now, you’re equipped with the necessary knowledge for making your own decision.

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