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In lugnet.trains, Thomas Avery writes:
> In lugnet.trains, James Brown writes:
> > Hmm. Is motor damage likely to occur? The intention with this would be for
> > either an operator or an RCX to briefly pulse the motor in the appropriate
> > direction; power is being applied for less than a second, which is enough to
> > flip the switch. If power is maintained, the motor axle stops rotating, and
> > I understand that doing that will cause the motor some grief, but I'm not
> > familiar enough with the technical side of things to know if the 1/2 second
> > pulse will cause wear-and-tear on the motor.
>
> I've always been hard on my motors, stalling them often. It's never seem to
> affect their performance, or even damage them.
>
> The difficult part of stalling a geared motor is containing the large forces
> generated on the structure surrounding the gear train. It's very difficult
> to stall one without a super-strong construction. Your more likely to break
> apart your model, or your gears, first.
Yep, and with this one using an 8-tooth gear straight on the rack, even with
a solid structure you'd be very likely to break the gear. If you can supply
an accurately timed "pulse", that would reduce the risk, but with the geared
motors, it takes very little time to pull your structure apart. A safer way
would be provide some give through a clutch mechanism or even a clutch gear
http://www.peeron.com/inv/parts/60c01, but that would probably increase the
size of your switch.
ROSCO
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Message has 1 Reply:
 | | Re: Motorized Switch
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| (...) Hmm, Ok. Since it sounds like I'm not risking the motor, and I have lots of 8 tooth gears, I'm going to experiment by leaving the motor on for a while, and seeing what happens. thanks very much for the information, guys! This is exactly the (...) (22 years ago, 7-Jun-02, to lugnet.trains, lugnet.technic)
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Message is in Reply To:
| | Re: Motorized Switch
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| (...) I've always been hard on my motors, stalling them often. It's never seem to affect their performance, or even damage them. The difficult part of stalling a geared motor is containing the large forces generated on the structure surrounding the (...) (22 years ago, 7-Jun-02, to lugnet.trains, lugnet.technic)
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