Rebuilding the sumo bot after the loss (other thread). One question I keep going back and forth on: brushed micro motors (cheap, replaceable) vs coreless (more torque per amp, lighter, expensive).
Numbers I'm seeing:
- Brushed N20 12V at 300rpm: torque around 0.5 kg-cm, life ~50 hours competitive
- Coreless 1230 12V at similar rpm: torque 0.8 kg-cm, life ~30 hours
For a competition where you need 90s max pushes, the coreless wins on paper. Pero spares cost 5x more.
Anyone done a season on coreless and seen them through to nationals? Worth the upfront pain?