Author Topic: K’nex Motor Quality and Torque  (Read 124 times)

Offline Callistemon

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K’nex Motor Quality and Torque
« 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.

Update: I have been told that the K'nex motors are likely brushed, amd that the red 190 RPM battery motors have very minimal torque. The 66 RPM plug-in motor is far too slow for my use, and the second fastest battery motor is 48 RPM. So, what about the 2-speed motor, how much torque does it provide at 240 RPM? Can it spin four curved panels at a reasonable speed? If anyone has an extra 2-speed motor I would like to buy it.
« Last Edit: July 22, 2020, 07:47:36 am by Callistemon »