TT-Tracks

Re: TT-Tracks

Postby Bill Dixon » Thu Sep 21, 2017 3:30 am

The weather has really changed. With the chill in the air, summer is over.
I had today off, something about working too much overtime, so I worked on the loop wiring.
20170920 loop wiring.jpg
Did both loops the same way.
I was going to put all the wiring on top of the board but decided to hide as much of it as possible under the top. It only comes to the surface to pass over support joists.
Both loops were completed and tested.
20170920 Testing.jpg

You can see the SP SW1200 just coming off the corner module.
I then ran two locomotives at once. I may have to fine tune the joints when we start running trains but everything works well now.
Regards
Bill Dixon
TT-Tracks
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Re: TT-Tracks

Postby Bill Dixon » Fri Sep 29, 2017 5:12 pm

Been working on modules, attaching feet.
20170928 Corner Feet.jpg

If you look at the location of the clamps you will note a problem that I didn't notice until after I had glued the blocks to the bottom of the module. Three of them are right under tracks!
Oh well, glued another block beside the first.

20170928 First Module Feet.jpg
Added leveller feet to the First module as it will always be used.
Also did the short crossover module as it always seems to be a pain to level.

As we are making the display another module wider the power cord joining the power corner to the station corner needed to be longer. Made an extension cord two modules long. That should carry us for a while.

Glued down all the loose track we found last setup. Finished ballast and basic scenery on the swayback module.
Added another layer of grass to the short crossover module.
Much more to do but that is all that needs to be done for this weekends setup.
Regards
Bill Dixon
TT-Tracks
North Vancouver, BC
Bill Dixon
 
Posts: 1058
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Re: TT-Tracks

Postby Bill Dixon » Fri Sep 29, 2017 5:46 pm

Been thinking about curves and corners.

R1 is what came with my first train set. I used this with R2 on my first corners (Small corners 17 1/2" Square). Both curves are too sharp for anything to look good on. The work in slow speed service on Bjoern's reverse loop.

R3 was not used much. It was used in early days as a third track made out of set track on my early displays.
Now it has come back into use on the new reverse loops. It is suitable for slow speed service. By adding an inch and a half ( 4cm) on each side of the loop modules I could make this R4 but I wanted to keep the loops to a maximum three foot width.

The large 24" square corners use R4 (17 1/4")and R5 (19") with R6 (20 1/2")in the station corner.
These curves work well but still look bad with long equipment.

I have been doodling ideas for larger corners.

If I go to a 30" Square corner the curves increase to R5 (19") and R6 (20 1/2"). Not much of an increase but if these are made in two identical pieces they will fit in the current corner boxes. As the two corner pieces are not very large they could be made of foam.

If I go to a 36" Square corner the curves increase to R9 (25 1/2" ) and R10 (27 1/4"). These need to be made in two identical pieces. It might be possible to make these out of foam but plywood would be better.

Lastly I worked on a 1 metre corner design. Why one meter?
That is two standard modules long and might be easier to fit in a display. The curves on these two-piece corners are R10+ (28.25") and R12- (30"). These would great curves but they would have to be made out of plywood.

One thing to note on all my new designs is that I have moved the curves to the center of the module to make them fit. If I locate the curves in the standard locations the outer curve is right on the edge of the module.

I have paper templates of all three of these curve modules and will discuss them with the guys this weekend.
I will try and get a picture of them with a current corner.

Because they will fit in the current corner boxes I am inclined to pursue the 30" corners for now.

For those of you that are interested here are the curve numbers, their mm dimensions, and nominal inch measurements.
R1 - 310mm - ~ 12.2"
R2 - 353mm - ~ 13.9"
R3 - 396mm - ~ 15 5/8"
R4 - 439mm - ~ 17.28"
R5- 482mm - ~ 19"
R6 - 525mm - ~ 20.6"
R7 - 568mm - ~ 22.3"
R8 - 605mm - ~ 23.8"
R9 - 648mm - ~ 25.5
R10 - 691mm - ~ 27.2"
R11 - 734mm - ~ 28.9"
R12 - 777mm - ~ 30.6"
Regards
Bill Dixon
TT-Tracks
North Vancouver, BC
Bill Dixon
 
Posts: 1058
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Re: TT-Tracks

Postby Bill Dixon » Sat Sep 30, 2017 3:27 am

I took some pictures of the new corner templates I made.
20170930 30 inch corner.jpg
Here is the two-piece thirty inch corner.
20170930 36 inch corner.jpg
Here is the two-piece thirty six inch corner.
20170930 one metre corner.jpg
And here is the one meter corner.

20170930 one meter corner vs two foot corner.jpg
Here it is again against the finished display.

After discussion it was decided that we will ignore the thirty-six inch corner and build both the thirty-inch corner and the one metre corners. The thirty-inch corners because they can be brought into service quickly and they will fit in the current corner boxes. The one-metre corners because the curves will be awesome.

This will change the access to the current inside track. We may consider making an inner line of industrial switching modules and leaving the outer two line for display trains. More to plan.

All I need now is foam, easy to get, and track.
Regards
Bill Dixon
TT-Tracks
North Vancouver, BC
Bill Dixon
 
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Re: TT-Tracks

Postby Bill Dixon » Mon Oct 02, 2017 3:50 am

Tibi did some track planning Saturday night and came up with an almost full size template for a metre square corner module set.
20171001 Near FS Template vs Corner.jpg
Here is the template in front of a corner module.

20171001 Template on Modules.jpg
Here is the same template on top of a current corner module. The broad curves will look great!
The module pair may not be built exactly as shown but should be close.

Not a this year thing but maybe for Western Rails 2018.
Regards
Bill Dixon
TT-Tracks
North Vancouver, BC
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Re: TT-Tracks

Postby CFRiad » Mon Oct 02, 2017 11:28 am

Bill Dixon wrote:For those of you that are interested here are the curve numbers, their mm dimensions, and nominal inch measurements.
R1 - 310mm - ~ 12.2"
R2 - 353mm - ~ 13.9"
R3 - 396mm - ~ 15 5/8"
R4 - 439mm - ~ 17.28"
R5- 482mm - ~ 19"
R6 - 525mm - ~ 20.6"
R7 - 568mm - ~ 22.3"
R8 - 605mm - ~ 23.8"
R9 - 648mm - ~ 25.5
R10 - 691mm - ~ 27.2"
R11 - 734mm - ~ 28.9"
R12 - 777mm - ~ 30.6"


As we discussed yesterday, the correct radii are as follows:
R1 -- 310 mm -- 12.2 in
R2 -- 353 mm -- 13.9 in
R3 -- 396 mm -- 15.6 in
R4 -- 439 mm -- 17.3 in
R5 -- 482 mm -- 19 in
R6 -- 525 mm -- 20.7 in
R7 -- 568 mm -- 22.4 in
R8 -- 611 mm -- 24.1 in
R9 -- 654 mm -- 25.7 in
R10 -- 697 mm -- 27.4 in
R11 -- 740 mm -- 29.1 in
R12 -- 783 mm -- 30.8 in
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Re: TT-Tracks

Postby CFRiad » Mon Oct 02, 2017 11:33 am

Bill Dixon wrote:Tibi did some track planning Saturday night and came up with an almost full size template for a metre square corner module set.

Please note the emphasis on almost. here is the PDF of the plan. For printing it correctly you have to set the Adobe Acrobat print settings settings to "No scaling". Good luck.
1m_curve_1to1.pdf
(949.04 KiB) Downloaded 56 times
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Re: TT-Tracks

Postby CFRiad » Mon Oct 02, 2017 11:36 am

Bill Dixon wrote:Tibi did some track planning Saturday night [...]

This is the complete image of the corner. All dimension in millimetres.
1mCorner.png
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Re: TT-Tracks

Postby Bill Dixon » Mon Oct 02, 2017 1:14 pm

CFRiad wrote:As we discussed yesterday, the correct radii are as follows:
R1 -- 310 mm -- 12.2 in
R2 -- 353 mm -- 13.9 in
R3 -- 396 mm -- 15.6 in
R4 -- 439 mm -- 17.3 in
R5 -- 482 mm -- 19 in
R6 -- 525 mm -- 20.7 in
R7 -- 568 mm -- 22.4 in
R8 -- 611 mm -- 24.1 in
R9 -- 654 mm -- 25.7 in
R10 -- 697 mm -- 27.4 in
R11 -- 740 mm -- 29.1 in
R12 -- 783 mm -- 30.8 in


Thanks for the correction Tibi.
Don't know how I lost 6mm going from R7 to R8.
Regards
Bill Dixon
TT-Tracks
North Vancouver, BC
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Posts: 1058
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Re: TT-Tracks

Postby Bill Dixon » Tue Oct 03, 2017 12:42 pm

20171003 Safety Foot.jpg

On my folding return loops I added these feet to keep the the end of the module off of the floor and protect the rail ends (didn't work). The problem is that they look ugly and are in the way when operating.
They had to come off.

I had thought about a board that screwed to the end or rotating feet. The ideas were either complex or involved something else to carry and misplace.

The solution was to use the leveller that are already with the module. Two of them screwed right into the t-nuts that are used to clamp the module open. For the other two I drilled and tapped two holes in the plywood end right under the track.
20171003 New Feet.jpg

So nothing more to carry. Easy to install or remove. The feet store inside the module when not in use. One more problem solved.
Regards
Bill Dixon
TT-Tracks
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