@Coleman
Conclusion from this also needs to be corrected.
If you need to exert a high force (because your robot is heavy), then you need to increase either the torque or [decrease] the radius of the wheel.
To achieve the same forward speed for the robot, smaller wheels have to rotate faster. Even if we have a faster motor, we cannot indefinitely reduce the size of wheel due to physical size limits of motor or the shaft.
hello sir,
i am making a robo car for racing in my university.i am little confused about the type of motor and wheels to be used.
@prashant Take a look at the Drive Motor Sizing Tutorial here: https://www.robotshop.com/blog/en/drive-motor-sizing-tool-9698
what is better chain driven robots or wheel drive?
@jeanpierre Each has its advantages and disadvantages - smaller robots tend to use direct drive because of simplicity, whereas a chain drive system which connects the motor’s drive shaft to a separate shaft which turns the wheels can add a gear ratio and takes the weight of the robot off the motor’s output shaft.
@Sam Try something with soft rubber, and ensure your robot has enough weight to compress it a bit. You might also want to consider tracks with rubber grip / pads.
@Sam Since you’re just in the design stage, we suggest creating a new topic on the RobotShop Forum and provide as much information as possible: https://www.robotshop.com/forum/
Hi Sir,
Can you let me know which plastic to make wheel?
@Julia It depends on your application, but most smaller wheels are made out of injection-molded ABS and covered by a rubber tread.
sir i m going tontake part in a fest robot race
which type of motor should i use to get max speed in 12volt battery
and one more problem is there on that track they had spread oil on a glass on which we have to pass and it is inclinded 45° please help
@shashank To confirm, the robot needs to climb a glass surface at 45 degrees with oil spread over it? We suggest creating a new topic on the RobotShop Forum with additional details.
I m making a robo for robot war.
It would be around 10 kg pyramid shape
which motors should I use to get maximum speed
I would be using 4 motors please help
@shubham: As a general rule, to get a very high speed you would want the DC motors with the highest RPM possible. Of course, there is always a trade-off between torque and RPM. Therefore, you should first determine your input voltage (12 V, 24 V DC ?) and torque requirements to move your robot (also include more if you need to push other things, too). Then, you can search our catalog (here & here) for a motor that meet those requirements with a high RPM. For more details on all of this, we recommend that you check the following articles:
How Do I Interpret DC Motor Specifications?
Vehicle Speed, RPM, and Wheel Diameter Finder
How to Make a Robot – Lesson 3: Making Sense of Actuators
What type of steering mechanism should I use for making a six wheel robot car of length 65inch and breadth 40inch and what type of motor should I use?
@Vedant There is no ideal solution. If you are set on a 6WD platform, you can either have one motor per wheel, and all wheels fixed (skid steering like a tank) or have the front two and rear two pivot using rack and pinion.
Hi. I’m having a problem in my tank drive design. I’m using 2 x bike chain for each track which is driven by total of 4 motorbike teethed wheels, one at front and one at back I welded the gears to the motor coupling. No idler wheels/teethed wheels are used.
Now the all metal design presents considerable weight, I can’t give exact weigh but I can say it’s around 2 large watermelons. My 5kg/cm motors can move but barely, if I drive uphill even at the slightest inclination the motor will stall.
I want to know if I can add a teethed wheel in the space where “idler” wheels are supposed to go powered by motors that run at the same rpm and torque. I’m not particularly worried of the powered idler wheel slipping in the tracks since the teeth will catch on the bike chain. So do you think it will work?
Another thing, sry for using Unknown but I don’t like leaving my tracks in the Internet.
@PreferNotToDisclose That’s really hard to troubleshoot without seeing it. We’d really need to see some photos of the setup - can you create a new topic on the RobotShop Forum? If you’re not comfortable showing the actual thing, can you sketch it?
hii soo i have a question and it will be really helpful if you answer it asap caz m kind of confused actually we r designing a wheel robot for a competition (a race ) but the problem is track of this race is inclined and according to rules of this race we can only used two 2 high torque motors provided by race organization and even the source of our driving power is limited to only 12 volts that why m kind of confused what kind of drive will b most efficient for the vehicle and how number of propelled wheels and free wheels effect the motion and drive of the vehicle.
@Pranjal You would use skid steering - one motor on each side. The idler wheels (one or two) don’t have any effect.
