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Subject: 
Re: Another Motorized Switch Design :-)
Newsgroups: 
lugnet.trains
Date: 
Mon, 15 Dec 2003 02:58:16 GMT
Viewed: 
1300 times
  

In lugnet.trains, Ross Crawford wrote:

   Does the motor stall at each limit?

Yes, it does. I’ve been using it with this battery box and all I need to do is tap on one of the buttons to get it to switch. I’ve also been running it with LACC with the throw time set to 0.1 second and this works great. Haven’t tried it yet with a pole reverser, but you probably want to be quick.

   You could probably reduce the “problem cars” issue with an axle connector and extension (move the motor further away from the switch lever) and reduce the size of the housing a bit.

Great observation! That allows the 4x8 house to perfectly straddle the joint between the switch and the next piece of track. If the 4x6 switch version doesn’t work out, I’ll put together some instructions with your suggestion.

Mark

   
         
   
Subject: 
Re: Another Motorized Switch Design :-)
Newsgroups: 
lugnet.trains
Date: 
Tue, 16 Dec 2003 04:35:42 GMT
Viewed: 
1337 times
  

In lugnet.trains, Mark Riley wrote:
   In lugnet.trains, Ross Crawford wrote:

   You could probably reduce the “problem cars” issue with an axle connector and extension (move the motor further away from the switch lever) and reduce the size of the housing a bit.

Great observation! That allows the 4x8 house to perfectly straddle the joint between the switch and the next piece of track. If the 4x6 switch version doesn’t work out, I’ll put together some instructions with your suggestion.

Ok, Dave is right, this is fun!

So, I added the axle joiner and this is what it looks like now:



Moving the housing back allowed the signal arm to be simplified. Since the housing was moved back, there’s now more clearance (about 1/2 stud laterally). I also beefed up the base attachment to help deal with uneven surfaces like carpet.

Only the 4x6 unit has shown a tendency to self-destruct. The previous 4x8 design has been holding together just fine, but this new design should be even more stable and it’s been able to take everything I’ve dished out. :-)

The modifications to the 4x6 design (which I’m not sure even work) actually made it enough larger that I don’t know that it’s worth pursuing if it can’t be held down to the original 4x6 size (hey, maybe Elmer’s will help...).

Anyway, here’s the LDraw file:

http://www.brickshelf.com/gallery/markril/Trains/TSwitch3/tswitch3.ldr

Folder when moderated:

http://www.brickshelf.com/cgi-bin/gallery.cgi?f=66120

Thanks for the suggestion, Ross!

Mark

   
         
   
Subject: 
Re: Another Motorized Switch Design :-)
Newsgroups: 
lugnet.trains
Date: 
Tue, 16 Dec 2003 22:47:57 GMT
Viewed: 
1316 times
  

In lugnet.trains, Mark Riley wrote:
   In lugnet.trains, Mark Riley wrote:
   In lugnet.trains, Ross Crawford wrote:

   You could probably reduce the “problem cars” issue with an axle connector and extension (move the motor further away from the switch lever) and reduce the size of the housing a bit.

Great observation! That allows the 4x8 house to perfectly straddle the joint between the switch and the next piece of track. If the 4x6 switch version doesn’t work out, I’ll put together some instructions with your suggestion.

Anyway, here’s the LDraw file:

http://www.brickshelf.com/gallery/markril/Trains/TSwitch3/tswitch3.ldr

Folder when moderated:

http://www.brickshelf.com/cgi-bin/gallery.cgi?f=66120

Thanks for the suggestion, Ross!

No problem! I might even build some of these myself...

ROSCO

 

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