Hello, everyone
I’m a newbie in the world of robotics planning to build my first sumobot (20cmx20cm, 3kg), it will compete on a circular doyo with a diameter of 15cm
I’ve read about metal gearmotors but I’m still stuck.
I’d appreciate any help from you guys.
Greetings,
EfraAV.
Hi EfraAV,
What’s your question exactly ?
Of course you will need some kind of gear motor otherwise the RPM of the DC motor itself will just be too high.
We have a Drive Motor Sizing Tool available if you want to have a look, but this doesn’t factor in the force needed to push against another robot.
Hello!!, thanks for your quick reply
I found these two motors:
store.robodacta.mx/motores/motorreductor-metalico/motorreductores-25d/easydriver-v4.5/
store.robodacta.mx/motores/motorreductor-metalico/motorreductores-25d/motorreductor-25d-34-1-es-2/
and I’m wondering if any of them would work for a sumobot competition (3kg, 20cmx20cm) competition.
I’ve used the tool but still I’m not sure about which values would be good enough, I’m talking about acceleration nor velocity
would a pair of those do any good?
Thanks again, Dialfonzo!!
Greetings,
EfraAV.
Hi EfraAV,
Not really sure and can’t help you out with motors from another store (perhaps the community can offer some input).
You might want to check their specs and compare to our dynamic tool above.
Hello
Excuse me for that, my bad.
I didn’t know the forum has a shop.
Thing is I’m not sure if any gear motor with the next specifications would work for a 3kg sumobot:
Option 1: 6V, 200 RPM and 550 mA (max) free-run, 115 oz-in (8.5 kg-cm) and 6.5 A stall.
Option 2: 12V, 200 RPM, 30mA(No load), 5A(highest), 170oz-in(12kg-cm)
Option 3: 6 V: 285 RPM and 450 mA free-run, 60 oz-in (4.3 kg-cm) and 6 A stall.
If a recommendation still can’t be done, I’d appreciate if you could tell me how much acceleration and speed should a 3kg sumo have to be competent
Thanks for your quick reply!
Greetings,
EfraAv
Hi EfraAv,
Most “Sumo” will require a fast speed rather than high torque.
The motor you suggested in your first post would be available from RobotShop, they are not on our website but could be special ordered.
Work the numbers on the calculator, once you know the Torque and RPM needed we can find something that match for you.
