 | | Re: 8475 Motor Tests
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| This is interesting information, thanks TJ. I must say that I got the visual impression that the buggy motors seemed to have more than a mere 2 - 3 times more shaft power output than the gear motors. The little piece of data which would add greatly (...) (22 years ago, 8-Jan-03, to lugnet.technic, lugnet.robotics)
| | | | | Re: 8475 Motor Tests
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| (...) Yes, I did too. Judging from the performance of the RC car, you'd think the motors would be equivalent to perhaps 8, or more, of the geared 9V motors. The buggy can really zip along! There was one other thing about my test. When the 9252 motor (...) (22 years ago, 8-Jan-03, to lugnet.technic, lugnet.robotics)
| | | | | Re: 8475 Motor Tests
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| That figure was the normal operation (no load) figure. What concerned me was that it was a factor of almost 20 higher than the gear motors which normally run about 10mA. Of course, it is very easy to overlook the fact that the gear motor is (...) (22 years ago, 8-Jan-03, to lugnet.technic, lugnet.robotics)
| | | | | Re: 8475 Motor Tests
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| (...) Well, check this out: (URL) are a few pictures of the internals of the motor. Quite a few gears! (...) Thanks! TJ (22 years ago, 8-Jan-03, to lugnet.technic, lugnet.robotics)
| | | | | Re: 8475 Motor Tests
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| Ok, here is an extrapolated result for the short circuit (stalled) test. The current at 9 volts would be 3.6 amps. Since I did not wish to burn up the motor, I checked current readings at both 3 and 6 volts and also measured the DC resistance and (...) (22 years ago, 8-Jan-03, to lugnet.technic, lugnet.robotics)
| | | | | Re: 8475 Motor Tests
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| (...) Holy C......... That's quite high (understatement) for a little LEGO motor. Do you think it's possible that the train controller I used in my test didn't produce enough juice? If that's the case, then the motor has a higher maximum stall (...) (22 years ago, 8-Jan-03, to lugnet.technic, lugnet.robotics)
| | | | | Re: 8475 Motor Tests
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| (...) The limitation on the train controller is the wall wart - not the controller itself. There was discussion on this in .trains a while back. Someone built a tranformer box with about 3A output IIRC, and ran several trains with it through an (...) (22 years ago, 9-Jan-03, to lugnet.technic, lugnet.robotics)
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