LEGO TECHNIC : 14763


Technic / 14763	14762 \| 14764

Subject:	Re: High Failure Rate of New Type 9V Geared Motor
Newsgroups:	lugnet.robotics, lugnet.technic
Date:	Sat, 22 Oct 2005 02:43:28 GMT
Viewed:	1274 times

In lugnet.robotics, Chio Siong Soh wrote: > > Its performance is degraded compared to the earlier motor (#71427). The only > advantage seems to be its lighter weight. I'm guessing it may also be cheaper / easier to manufacture. ROSCO

Message has 1 Reply:

		Re: High Failure Rate of New Type 9V Geared Motor
(...) 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)

Message is in Reply To:

		Re: High Failure Rate of New Type 9V Geared Motor
(...) 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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