| |
In lugnet.trains, Jason J. Railton writes:
> In lugnet.trains, James Brown writes:
> > In lugnet.trains, James Brown writes:
> > > For NALUG's upcoming show in September, I volunteered to design a motorized
> > > switch, and here is the result:
> > >
> > > http://www.brickshelf.com/cgi-bin/gallery.cgi?f=18417
> > >
> > > Any feedback would be appreciated!
> >
> > I realize .trains is a little slow right now, but I'm still a little
> > surprised that this sank without even making a ripple in the surface. I
> > know at least a couple people have gone to look at it, with 300+ views on
> > the folder...
> >
> > I was hoping to get some constructive feedback from other people who have
> > made, or tried to make, motorized switches. Or are people exercising the
> > "if you can't say anything nice" option? I'm of the "'it's crap' is still
> > more useful than no comment" school of thought.
> >
> > feedback still appreciated...
>
> It's not that, it's just this has been gone over several times before, and
> I'm afraid it will take a major revolution to get a new design noticed.
Ok, I guess I see that, although I could only find a couple designs, and
they seemed much more complicated that necessary.
> Your's is a neat and simple design, and a new way of gripping the slider.
> But, it's not a very safe approach to the motor drive. There's nothing to
> protect the motor from being driven too far one way or the other so it's
> liable to burn out or damage the slider over repeated use - particularly by
> an untrained operator. It seems to me redundant to install a point motor
> that you have to stand over when you operate it.
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.
x-posting to .technic, as I'm more likely to find someone over there
familiar with motors and their stress limits.
> Nice simple approach though.
thanks,
James
|
|
Message has 2 Replies:
 | | Re: Motorized Switch
|
| (...) 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)
|
Message is in Reply To:
| | Re: Motorized Switch
|
| (...) It's not that, it's just this has been gone over several times before, and I'm afraid it will take a major revolution to get a new design noticed. Your's is a neat and simple design, and a new way of gripping the slider. But, it's not a very (...) (22 years ago, 6-Jun-02, to lugnet.trains)
|
16 Messages in This Thread:
  
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
