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Subject: 
Track Geometry
Newsgroups: 
lugnet.org.ca.rtltoronto
Date: 
Tue, 18 Nov 2003 15:36:57 GMT
Viewed: 
2785 times
  

I'm trying to figure out some track geometry that includes a 45 degree
run, but fits back into the regular perpendicular runs.

Does anyone know of a website with examples of how to do this.  So far I
haven't managed anything on my own.

Thanks

Derek

p.s. Yes, Chris this is for my connect 4 robot.
p.p.s.  No Calum it's not really for my connect 4 robot.

   
         
     
Subject: 
Re: Track Geometry
Newsgroups: 
lugnet.org.ca.rtltoronto, lugnet.trains
Date: 
Tue, 18 Nov 2003 17:03:36 GMT
Viewed: 
3519 times
  

In lugnet.org.ca.rtltoronto, Derek Raycraft wrote:
I'm trying to figure out some track geometry that includes a 45 degree
run, but fits back into the regular perpendicular runs.

Does anyone know of a website with examples of how to do this.  So far I
haven't managed anything on my own.

There is no perfect solution because the square root of 2 is not a rational
number.

HOWEVER there are some that are quite close.. within a stud or two both
horizontally and vertically)

Try this (using track designer which you can get using info in the header of
lugnet.trains if you don't have it already)

- start a track horizontally (going left, say).
- Put a switch up then a quick reverse curve so now you have two parrallel
horizontals at normal spacing.
- take the bottom one about 8-10 tracks farther to the left.
- now loop it upwards 4 sections till you are going vertically
- go one section straight vertical
- now loop around 6 sections till you form a 45 (that is, go 135 degrees of
circle)
- go 5 diagonally down (I think it's 5)
- go 2 curves in the other direction.
- go straight to the right and you sholud find you are pretty darn close to the
same point.

it's close enough that I think Track Designer thinks it's a shorted reversing
loop. (no actually it doesn't so...)

Hope that helps.

There is a website somewhere that has some of these saved and displayed. if
anyone knows it, I'll put it in the header of lugnet.trains

   
         
   
Subject: 
Re: Track Geometry
Newsgroups: 
lugnet.org.ca.rtltoronto
Date: 
Tue, 18 Nov 2003 17:49:50 GMT
Viewed: 
2958 times
  

In lugnet.org.ca.rtltoronto, Derek Raycraft wrote:
   I’m trying to figure out some track geometry that includes a 45 degree run, but fits back into the regular perpendicular runs.

Does anyone know of a website with examples of how to do this. So far I haven’t managed anything on my own.

Thanks

Derek

p.s. Yes, Chris this is for my connect 4 robot. p.p.s. No Calum it’s not really for my connect 4 robot.

Hey Derek,

Did an impromptu TD thing up for ya--



Hope it’s good for ya!

17 straight is almost perfect for TD, 10? Well, not so much...

Dave K

   
         
   
Subject: 
Re: Track Geometry
Newsgroups: 
lugnet.org.ca.rtltoronto
Date: 
Tue, 18 Nov 2003 18:46:14 GMT
Viewed: 
3507 times
  

In lugnet.org.ca.rtltoronto, David Koudys wrote:
   In lugnet.org.ca.rtltoronto, Derek Raycraft wrote:
   I’m trying to figure out some track geometry that includes a 45 degree run, but fits back into the regular perpendicular runs.

Does anyone know of a website with examples of how to do this. So far I haven’t managed anything on my own.

Thanks

Derek

p.s. Yes, Chris this is for my connect 4 robot. p.p.s. No Calum it’s not really for my connect 4 robot.

Hey Derek,

Did an impromptu TD thing up for ya--
   snip
Hope it’s good for ya!

17 straight is almost perfect for TD, 10? Well, not so much...

Dave K

DOH!



Here are the links...

http://www.brickshelf.com/gallery/jvwinden/TrainLayouts/Other/45degrees.gif

http://www.brickshelf.com/gallery/jvwinden/TrainLayouts/Other/45degrees.tdl

Left side using curve straight curve....

 

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