Author Topic: K’nex Motor Quality  (Read 27 times)

Offline Callistemon

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K’nex Motor Quality
« on: June 30, 2020, 03:47:08 am »
I asked K’nex many months ago if their motors are brushed or brushless, and if they have a sleeve or ball bearing. They said the information was unavailable. More recently, K’nex User Group said they did not know either. Brushless motors with ball bearings are superior, being quieter, more efficient, and longer-lasting.

DC brushless motors with ball bearings usually last about 70,000 hours before reaching 10% chance of failure. That’s 8 years of continuous operation.

For my motorized fan I want the silver or red 190 RPM motor, but I don’t know if the torque will be sufficient as the line if battery motors is just different ratios at the same power. There is also the stronger 2-speed motor. The batteries will need to be recharged (alkaline batteries are horribly wasteful), but the worm gear motor is so slow and overly forceful.