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In lugnet.trains, Ross Crawford writes:
> In lugnet.trains, Thomas Avery writes:
> > 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.
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 kind of
feedback I was hoping to get.
thanks,
James
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Message has 1 Reply:
 | | Re: Motorized Switch
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| (...) Well, some good, some bad. The good is that leaving the motor going in one direction for 20 minutes causes no separations and no apparent stress to any parts. The bad is that it did overheat the motor, which wouldn't run again until it cooled (...) (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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| (...) 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 (...) (22 years ago, 7-Jun-02, to lugnet.trains, lugnet.technic)
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