Timeline for How can I power a wheel but let it spin freely when not under power?
Current License: CC BY-SA 3.0
14 events
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| Apr 13, 2017 at 12:49 | history | edited | CommunityBot |
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| Mar 24, 2015 at 19:11 | vote | accept | cwd | ||
| Mar 22, 2015 at 13:49 | answer | added | Ali | timeline score: 2 | |
| Dec 29, 2014 at 10:33 | comment | added | Galahad II | @cwd Thanks. Maybe the units I tried were faulty because they just "click" move a little and then stop. I will need to delve deeper into the subject. Will report any findings here. | |
| Dec 29, 2014 at 3:55 | comment | added | cwd | @Galahad - I found this - maccon.de/en/electromechanics/clutches/ec.html | |
| Dec 25, 2014 at 22:38 | comment | added | Galahad II | I would be very interested to learn how the photocopy clutches you saw on ebay work. I dismantled a copier myself recently and ended up with 3 units that look like small motors but are labelled "Step Clutch". They have 2 wires like regular DC motors so are not steppers. When connected to a power supply they just make a clicking noise. When rotated freely by hand, there is a certain amount of free play and then resistance is encountered. Image is here Imgur | |
| Dec 24, 2014 at 20:38 | history | tweeted | twitter.com/#!/StackRobotics/status/547853795632631810 | ||
| Dec 23, 2014 at 7:59 | comment | added | cwd | Thanks - both of those are good ideas. Post as an answer and I can upvote / mark as correct. Still open to other options if they exist. | |
| Dec 23, 2014 at 5:50 | comment | added | Spiked3 | One way bearing, used often for helicopter drive gears so the rotor can spin/coast when power is not applied. | |
| Dec 23, 2014 at 4:28 | comment | added | John Zwinck | Another idea is a regular slipper clutch (also used in gas R/C), to limit the torque that can feed back through the gearbox if someone pushes the robot. | |
| Dec 23, 2014 at 3:55 | comment | added | cwd | Thanks. I have also found some Electro-Magnetic Clutches via eBay that may work for this purpose. They look to be used in laser copiers. But I think there must be other solutions, too | |
| Dec 23, 2014 at 3:52 | comment | added | John Zwinck | Gas ("nitro") powered radio-controlled cars need something like this too. They usually use a centrifugal clutch mounted directly on the engine's crankshaft. The clutch bell then has the first drive gear mounted on it. This means higher RPMs for the clutch than if it were downstream, which is probably an advantage for the clutch to work well...it should be the same case with an electric motor. | |
| Dec 23, 2014 at 1:52 | review | First posts | |||
| Dec 23, 2014 at 14:13 | |||||
| Dec 23, 2014 at 1:50 | history | asked | cwd | CC BY-SA 3.0 |
