 | | Re: High Failure Rate of New Type 9V Geared Motor —Nathan Bell
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| | | (...) I sent Nathanael Kuipers an email regarding the motors and asked him to forward it to the proper person. Do you think it is excessive torque, excessive use, or just a bad piece design that causes this problem? Nathan (19 years ago, 21-Oct-05, to lugnet.robotics, lugnet.technic)
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| | | | | Re: High Failure Rate of New Type 9V Geared Motor —Chio Siong Soh
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| | | | (...) I suspect it's bad design. Perhaps the way the brushes rub on the PCB as pointed out by Philo ((URL) "This higher friction explains why 43362 stops faster when you give the shaft a twirl, and why its no-load current is higher (9mA vs. 3.5mA)". (...) (19 years ago, 22-Oct-05, to lugnet.robotics, lugnet.technic)
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| | | | | | Re: High Failure Rate of New Type 9V Geared Motor —Ross Crawford
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| | | | (...) I'm guessing it may also be cheaper / easier to manufacture. ROSCO (19 years ago, 22-Oct-05, to lugnet.robotics, lugnet.technic)
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| | | | | | Re: High Failure Rate of New Type 9V Geared Motor —Jordan Bradford
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| | | | (...) I burned out two of these motors in a high-torque situation (my Great Ball Contraption module prototype) which I posted about (URL) here> and (URL) here>. I don't like them for their friction, their louder sound, and that they "feel" cheaper (...) (19 years ago, 27-Oct-05, to lugnet.robotics, lugnet.technic, FTX)
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| | | | | | Re: High Failure Rate of New Type 9V Geared Motor —Chio Siong Soh
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| | | | (...) What a relief to know I'm not jinxed after all. (...) And their high mortality rate. I hope the proper person at TLC is looking into it. C S Soh (19 years ago, 28-Oct-05, to lugnet.robotics, lugnet.technic, FTX)
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