R3 reverse loop

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gscalerookie

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Looking at the reversing loop in the Lgb manual it calls for 11-11000 r1 curves, but i want r3 curves at least. How many 16000 r3 curved sections would i need to make a reverse loop?
 
korm kormsen said:
. plus one of these short (7cm/3") adapter pieces to make the "R3" turnout reach the full length of a R3 curve.
Click to expand...

All the standard LGB turnouts have the same degree of curvature and track length on the curved route as the matching standard curve piece. It's an intrinsic part of the LGB track geometry. Only the three-way turnout and double-slip vary from the rule.

IMG_2305.jpeg
 
You could also use 11 R3 curves, a R3 turnout and 2 x 10000 straight track pieces (or equivalent) to give you a 'tear-drop' loop.

You then eliminate the S curve and the loop can be used for longer trains.

I had to lengthen my reverse loops to fit in my 7 car TEE set, which has pickups on each power car at each end of the consist....

20230522_145814.jpg
 
Gizzy said:
You could also use 11 R3 curves, a R3 turnout and 2 x 10000 straight track pieces (or equivalent) to give you a 'tear-drop' loop.

You then eliminate the S curve and the loop can be used for longer trains.

I had to lengthen my reverse loops to fit in my 7 car TEE set, which has pickups on each power car at each end of the consist....

View attachment 338776
Click to expand...

I like that idea of eliminating the s curve that I’ve read should be avoided.
 
Gizzy said:
You could also use 11 R3 curves, a R3 turnout and 2 x 10000 straight track pieces (or equivalent) to give you a 'tear-drop' loop.

You then eliminate the S curve and the loop can be used for longer trains.

I had to lengthen my reverse loops to fit in my 7 car TEE set, which has pickups on each power car at each end of the consist....

View attachment 338776
Click to expand...
Oh so I can use 11 as described in the manual just swap the curves and turnouts and add a few straight to mate up to the turnout
 
gscalerookie said:
Oh so I can use 11 as described in the manual just swap the curves and turnouts and add a few straight to mate up to the turnout
Click to expand...
Yes, a long straight off both roads of the turnout to your slightly more than a half circle will give you a long return loop....
 
gscalerookie said:
Thanks
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You might take a look at some track planning software, such as Anyrail (www.anyrail.com) It's free for up to 50 sections of track which would be enough to plan your reverse loop. There are others, and many have their favorites, but I find Anyrail is a great way to dream seriously plan. It lets you try various arrangements until you find something that will (theoretically) fit. And, it's really pretty easy to use.
 
FatherMcD said:
You might take a look at some track planning software, such as Anyrail (www.anyrail.com) It's free for up to 50 sections of track which would be enough to plan your reverse loop. There are others, and many have their favorites, but I find Anyrail is a great way to dream seriously plan. It lets you try various arrangements until you find something that will (theoretically) fit. And, it's really pretty easy to use.
Click to expand...
I did download the software last night I was just trying to place a quick order
 
Gizzy said:
Yes, a long straight off both roads of the turnout to your slightly more than a half circle will give you a long return loop....
Click to expand...
This is my goal. I currently have a switch kat controlling the turnout with the nce power cab. Do you think I can make this work with the current setup or do I need to wire something else.
 

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gscalerookie said:
This is my goal. I currently have a switch kat controlling the turnout with the nce power cab. Do you think I can make this work with the current setup or do I need to wire something else.
Click to expand...
I'm not familiar with the switch cat. Does it have a switch that can reverse the polarity?

Otherwise you will need a DPDT switch....
 
Gizzy said:
I'm not familiar with the switch cat. Does it have a switch that can reverse the polarity?

Otherwise you will need a DPDT switch....
Click to expand...
I have a lgb supplementary switch I could add to the electric switch like pictured. The nce switch kat decoder takes track power in and two wires exit to the turnout motor to control it
 
As you are using DCC, I would use the LGB 55080 reversing loop units or something similar, to change the polarity.

They are what I've used....
 
If using two discrete switches, you cannot guarantee they will both switch exactly at the same time. - This could cause a short.

Also, I would be wary of the current capacity of the auxiliary switch?

PhilP.
 
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