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Re: My TT world

Posted: Sun Nov 06, 2016 12:38 pm
by ConducTTor
Made another return loop. It will stay unscenicked until I figure out what I want to do with it. I have an idea but I'm not sure it will work.

Re: My TT world

Posted: Wed Nov 09, 2016 6:22 am
by TiTan downunder
I like that idea.

What radius are the end loops?

Ian

Re: My TT world

Posted: Wed Nov 09, 2016 11:52 am
by ConducTTor
~400mm or 15 3/4'

Re: My TT world

Posted: Wed Nov 09, 2016 12:47 pm
by Bill Dixon
ConducTTor wrote:Made another return loop. It will stay unscenicked until I figure out what I want to do with it. I have an idea but I'm not sure it will work.
So these are Flex track glued on the foam or on cork roadbed?

Re: My TT world

Posted: Wed Nov 09, 2016 2:00 pm
by ConducTTor
Right on the foam. I'll carve it to make the roadbed. The loop/staging module has cork but just because it's directly on wood.

Re: My TT world

Posted: Wed Nov 09, 2016 5:59 pm
by AstroGoat760
Looks nice so far, Alex!

Re: My TT world

Posted: Sat Nov 12, 2016 2:29 am
by Bill Dixon
I decided to try and design a loop for a TT-Tracks display.
Here is what I came up with sitting on a six-foot table.
TurnBackLoop400mm.jpg
The basic piece is a three foot square with the corners cut off.
The add on is one foot square with small triangles (lime green) added to support the curved track.
If foam can be had in four foot square pieces if would be possible to make this all one piece instead of gluing several pieces of foam together.

The pink module on the right is designed to interface with the loop.
There is room for two staging tracks although i have not shown their turnouts.

The convoluted wiring on the pink module is due to the fact that Auto-Reversing units do not like to straddle two different power districts.
With our recent setups using the Z21 system this is currently not a problem as we tie both mains together, however if we setup using my Digitrax system the two mains are on different power districts. Also as the layout grows the need for power districts will come.
The gaps and wiring ensure that the Auto Reverse unit only sees one power district.
If the reversing loops end up too far away from the power feed module we may need to add a power feed to the pink module.
The loop module is a bit bulky at three feet by four feet but if made of foam should be light.
The light grid on the loop module is a suggestion for supports under the module so it is properly supported on the table top.

I will post an idea for the use of these loops on the TT-Tracks thread.

Re: My TT world

Posted: Sat Nov 12, 2016 4:29 am
by dileTTante
Not having an automobile, I think about portability. These loops could be split in half lengthwise to make them easier to transport.

-Terry

Re: My TT world

Posted: Sat Nov 12, 2016 7:52 am
by railtwister
ConducTTor wrote:Made another return loop. It will stay unscenicked until I figure out what I want to do with it. I have an idea but I'm not sure it will work.
These end loops look great, Alex. This is how the local HO club in Miami (ECHOES) sets up their modules. You may remember the layout from the NMRA National Trainshow in Atlanta a couple of years ago, although now we have replaced the smaller one-piece end loops ( the ones with the 22" radius curves) with much larger loops that use 5 modules each. I like your staging yard in the center of the one loop, it makes very good use of available space.

Bill in FtL

Re: My TT world

Posted: Sat Nov 12, 2016 3:22 pm
by ConducTTor
This second loop (unlike the one with staging) is meant for transportation. It's made of 3/8" birch and is pretty light. Dimensions are 33.5" X 44.5". It's meant to go on its side in my back seat. It could be split in half length or width wise - I simply didn't have the need. The other modules fit in the trunk.