The 4 pole pro4 motors are excellent for this class, they have more torque and can take a beating even if the car is heavier. Racers should prefer to have 1/10th controllers such as the Hobbywing XR10 Pro paired with a 540 size or pole 4 motor.
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High torque motors can be fitted with a closed loop control mechanism, like conventional servomotors, but the concept and shape is different. Because of the shape, the torquemotor generates a lot of torque, but its RPM is limited. A conventional servomotor on the other hand, can reach much higher RPM but generates far less torque.
It is therefore often fitted with a gearbox to reach the desired speed to torque ratio, but this gearing does reduce efficiency and accuracy. In direct drive torque motors, the motor directly drives the load which eliminates the use of a transmission or a gearbox.
While torque motors can achieve high velocities (up to 5450 rpm), there is a trade-off in torque as the motor becomes limited by speed dependent losses increase. The performance of a torque motor over its velocity range is illustrated in its torque/speed curve.
Full-Size Pickups With the Most Torque Ford F-Series Super Duty, 6.7-liter V-8 Power Stroke: 925 @ 1,800 rpm Chevrolet Silverado / GMC Sierra 2500/3500, 6.6-liter V-8 Duramax: 910 @1,600 rpm Ram 3500 inline-six-cylinder Cummins B motor: 900 @ 1,700 rpm
Kv allows you to get a handle on the torque that can be expected from a particular motor. Torque is determined by the number of winds on the armature and the strength of the magnets. A low Kv motor has more winds of thinner wire—it will carry more volts at fewer amps, produce higher torque, and swing a bigger prop.
Kv describes the RPM (revolutions per minute) a motor does per Volt that is put into it. Generally speaking the more Kv a motor has, the more RPM and more power. For example, a 9000Kv motor would be faster than a 2200Kv motor. If Kv is like horsepower, then Turns is the physical attribute of a motor.
Stick to a motor between 3,000-4,000 kv. You will more versatility with gear changes. I have a 5250kv motor and am limited on gearing options because if it. Also a higher kv will run hotter, and require a larger esc.
2:016:39Introduction summary of how to Pick an RC Brushless Motor, ESC, LiPoYouTubeStart of suggested clipEnd of suggested clipThe power output that we need from that motor is also going to select the size of the motor that weMoreThe power output that we need from that motor is also going to select the size of the motor that we physically need a larger motor is going to be able to dissipate.
Choosing the correct KV is very important, it's critical for the motor operation and high motor performance which is critical for the project. There are few things that determine the top speed: Battery voltage, gear ratio (if any), wheel size ( if any) and the motor KV.
Two motors, same can size, with the same gearing and the same batteries, the higher KV motor will run hotter, because it pulls more amps spins faster*. It will also be making more power, moving the car (or quad or whatever) faster.
540 (3650 = 36x50mm) and 550 (3656 = 36x56mm) sized motors are used in 1/10 scale RCs. They do vary in sizes and 540/550 are more of a generallized size.
hobbywing is a good brand. hobbyking is a vendor that has some "house brand" electronics that are clones of some hobbywing products. hobbyking also sells turnigy batteries which i am very fond of. no need to avoid either, just know what you are buying.
If you are using 30amps ESCs, you should choose motors that are bigger than 2205 or faster than 2300kv, and propellers should be bigger than 5 inches. For examples 30 amps is required for the 2204 2700kv, 2204 3200kv, 2205 2700kv or 2206 1900kv(with 6 inch propellers).
Electric motor power is stated in watts. 750 watts = 1 horsepower. An easy way to estimate power needs for RC hobby applications is to use 100 watts per pound for sport flying, 150 for aggressive aerobatics, 200 watts per pound for 3D flying.
The ESC can be selected based on the voltage and the peak current rating of the motor. A simple rule is to choose an ESC with atleast 5A more capacity than the peak rating of the motor, since you may be powering servos, receiver and other accessories from the ESC. Remember to always round up.
Torque motors are a special class of brushless permanent-magnet synchronous motors. Since the payload is directly connected to the rotor without the use of transmission elements, torque motors are classified as direct drives.
Fundamentally, the peak torque determines the maximum torque that the motor physically produces and the continuous torque defines the amount of torque the motor can continuously supply. The duty cycle of the application will define the dependency on peak or continuous torque designs.
Dynamic performance is drastically improved by very high control loop bandwidth. The direct coupling of the load and position feedback to the motor has the advantage of eliminating all phenomena that limit the dynamic performance on non-direct driven machines. Eliminating long-time drift, elasticity, and backlash is a huge advantage for machine performance and lifetime. Torque motor applications have a wide range of dynamic performance requirements. Depending on the specifics of a system’s duty cycle, the peak torque, continuous torque, or both will drive the selection of a motor.
Today, direct-drive technology is recognized as a leading solution for the requirements of high-productivity, improved accuracy and increased dynamics of modern machinery. They are rigid, more compact, provide high dynamic performance, reduce cost of ownership, simplify the design of the machine and reduce wear and maintenance.
Ford diesel engines are the most powerful in the world, but their gas engines provide plenty of twist. The Ford F-Series lineup has been the bestselling vehicle in the United States for nearly four decades.
Since 2000, the peak torque output of the Super Duty diesel engines has more than doubled, but it isn’t just the PowerStroke owners who are enjoying the massive amounts twist. The F-Series gasoline engines have seen a dramatic increase in torque in recent years, allowing them to offer similar numbers to the slightly older diesel engines.
A high torque motor is toroid shaped, like a donut, and thus has a large diameter and short axis. These motors can directly drive the application without additional mechanics, like worm wheels, belts or pulleys. High torque motors can be fitted with a closed loop control mechanism, like conventional servomotors, ...
In direct drive torque motors, the motor directly drives the load which eliminates the use of a transmission or a gearbox. As a result, the amount of moving parts in the system is reduced tremendously increasing the efficiency and creating a quiet and high dynamic operation. Therefore, direct drive technology achieves a very high lifetime.
As a result, the magnetic field of the stator starts to interact with the permanent magnet field of the rotor. Consequently, the permanent magnetic field of the rotor will start rotating synchronously with the stator magnetic field and torque (N) is created.
The stator of a high torque motor. The stator is the static part of the torque motor, which contains the lam stack and copper wire. Moreover, the lam stack contains “lam stack teeth” or “stator teeth”. On each of these teeth copper windings are wound. When three phase AC current is supplied to the copper windings, ...
An advantage of an outrunner motor compared to an inrunner motor, is that the air gap surface is substantially larger. In other words, the surface area through which the electromagnetic field lines pass from rotor to stator, is much larger. This way more electromechanical force is generated. Read more.
The stator of the outrunner motors is the static part of the torque motor, which contains the lam stack and copper wire. The lam stack contains “lam stack teeth” or “stator teeth”. On each of these teeth, copper windings are wound. When three phase AC current is supplied to the copper windings, the stator turns into an array of electromagnets.
Frameless refers to a motor without a frame, housing, bearing or feedback system. Our Framless High Torque Motors Series are designed to be built in the integral part of a system. With its outrunner and frameless design, size and weight are decreased making the motors easy to integrate and use in various applications. In addition, because of the high specific torque density, frameless torque motors are very suitable for small building volumes.
We should also note that Ram offers three different power rating levels for their 6.7L Cummins B-motor for their 2500 and 3500 models, with maximum torque rating at 660 lb-ft (manual trans) and 800 lb-ft with corporate 68RFE automatic. The 900 lb-ft rating Cummins uses the Aisin AS69RC HD automatic. Also, for those who do a lot of dyno testing, it can be very tricky getting a comparable torque curve through the rpm range with so many different turbos, transmissions, and software variables. But if anyone has any suggestions or information about how to better compare apples to apples, let us know.
The GM Duramax hits its max (910) at a very low 1,600 rpm.
Ram, 370 hp and a hulking 800 pounds-feet of torque.
While the 2.7 ecoboost isn't on this list, everyone that owns it claims neck snapping torque from it.
I agree you need to look at the torque curves too, I know the Ecoboost and the 5.7 Toyota have a good flat torque curve and I think both make 90% of their torque before 2,000 RPMS.
Do you want a hobby-grade short course RC truck that is easy to control, durable, and tons of fun? The Bezgar HS181 RC Truck has all those qualities and more. This awesome RC truck comes with two batteries so you can use for long enough, whether it’s indoors or outside.
Power and durability combine in the Traxxas Slash 2WD short course racing truck. The Slash is an RC truck that is perfect for beginners and has a durable construction to handle even the roughest conditions. It runs great right out of the box and delivers powerful performance.
With the Team Associated 70019 Short Course Truck, you can have a blast with your friends or family. This truck has a distinct look and is quick enough to keep up with all of your friends. It is tough and waterproof so it will keep running no matter what you do to it - flip it, run it into the puddles or bump cars in the neighborhood.
The Losi RC Truck SCT Brushed RTR is an incredibly rugged and durable truck that can take a beating. A perfect 2WD RC truck, it is unstoppable on dirt and pavement. And with a 3s battery in its belly, it’s ready to fly with incredible power. This is a great truck for racing and bashing, and it has been designed to be tough and strong.
Here’s a (hopefully) simple explanation: Torque is turning power. It determines how hard your engine can “pull” or turn the gears that make the wheels turn. Engines with more torque at lower RPM are able to generate more pulling power with less revving of the engine.
This why diesel trucks are great for towing heavy loads. Diesel engines make the most torque at the lowest RPM level , making them ideal for getting the load moving from a standstill and then pulling it for distance. The truck may have what sounds like a decent amount of horsepower as well, but it’s the truck’s measure of torque that allows it to get the load going and continue pulling it, even up hills. The trucks’ gearing also assists in this regard. The first few gears, say one through three, are set up for heavy pulling, which means the truck will generate a significant amount of force but won’t be going very fast. That’s one reason why you hear semi-trucks shifting through gears furiously when pulling away from a red light.
The diesel engine’s greater travel range per gallon (or liter) of fuel compared to a gasoline engine stems from the amount of force each technology produces using the same amount of fuel.
The first few gears, say one through three, are set up for heavy pulling, which means the truck will generate a significant amount of force but won’t be going very fast. That’s one reason why you hear semi-trucks shifting through gears furiously when pulling away from a red light.
The 2020 Ford Super Duty with the 6.7L Power Stroke V8 Turbo Diesel has 475hp and 1,050 lb.-ft. of torque.
The 2020 GMC Sierra HD with a 6.6L Duramax Turbo-Diesel V8 has 445hp and 910 lb.-ft. of torque and can tow up to 35,500 pounds.
Of course, having way more torque than horsepower is only a good thing if there’s enough horsepower to get the job done. A truck with 1,000 lb.-ft. of torque and only 100 horsepower (exaggerated for effect) may be able to pull a massive trailer, but can only travel at mind-numbingly slow speeds.
Chevrolet Performance isn’t messing around recommending its LSA 6.2L V8 crate engine as an upgrade for any LS-powered off-roader. It kicks out 500 lb-ft of torque.
Pace Performance: GM HT383 Crate Engine, part no. 12499101. Torquey engines are what this story is all about, and Pace’s version of the GM HT383 makes a peak of 425 lb-ft of torque at 3,500 rpm and over 400 lb-ft between 2,500 and 4,000 rpm, which is perfect for an off-road engine.
Pace Performance: LC9 5.3L and 4L70E 4WD package, part no. CPSLC9EROD4L70E. Fitch at Pace suggests an engine from the Chevrolet Performance E-Rod lineup. It’s a new LC9 5.3L with cam phasing that alters camshaft timing to optimize performance and efficiency.
Chevrolet Performance: E-Rod LC9, part no. 19258004. Dr. Jamie Meyer at Chevrolet Performance calls this “an affordable LS crate engine with power and durability.” It’s based on the same engine used in hundreds of thousands of GM trucks, including the Silverado and Suburban, and is a better way to go than pulling one out of a wrecked truck in the junkyard.
In fact, Pace’s Fitch told us, “This engine is specially tuned for torque and great power for trucks in a small-block package. With its 3.80-inch stroke [crank] and Vortec cylinder heads, the HT 383 makes awesome torque down low where you need it for towing or four wheeling.
19260164. This is the motor out of the Cadillac CTS-V with great internals and a 1.9L supercharger. This crate engine comes fully dressed, from the top of the charge-cooled supercharger assembly to the ignition system, water pump, balancer, and more.
Pace also has a version that makes 300 hp and 356 lb-ft.
Another word commonly used for torque is "moment" – a word we initially associate with time. This is not the case for motors. Although the Latin term "momentum" also has temporal meanings, it also covers many other terms. These include:
The term refers to a physical quantity in Newtonʼs mechanics that describes the rotational effect of a directed force on a body. Together with the rotational speed, the torque defines the transmitted power and can be represented by a vector.
The torque has the formula symbol "M" and is specified in the unit newton-meter (Nm). This is calculated by multiplying the lever length "r" in meters by the vertically acting force "F" in the unit "Newton". A clockwise torque is expressed as a negative quantity, counterclockwise torque as a positive quantity.
The simplest formula for calculating torque is the vector product of the length of the lever and the force F applied perpendicularly to it, i.e.: M = r x F.
In the actual application in motors, the torque is used as the "drive torque". This term refers to the more specific variant of torque that acts on the input shaft of a transmission and sets motors in motion.
Direct drives offer numerous further advantages that ultimately increase the efficiency of the production process. These include:
Torque is the rotational effect of a force on a body. In practice, it plays a major role in the performance of motors. While rotational speed is indirectly proportional to torque, high torque allows the application of high forces, such as those required in extruders, shredders, and servo presses.