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Using  simple O gauge track,  have never done this , What is the  O__,

on the radius for coming off a wall, and making the 90 degree turn,

down the other wall  ( curve sections)   and how many sections is needed to

make that turn, the walls are square,  -- checked that during building process.

thanks

Terry

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... Using  simple O gauge track ... how many sections is needed to

make that turn, the walls are square ...

 

For conventional 3-rail track:

O27 and O31 curves use 2 pieces for a 90-degree bend, 8 pieces for a full circle.

O42 uses 3 pieces for a 90-degree bend, 12 pieces for a full circle.

O54 and O72 curves use 4 pieces for a 90-degree bend, 16 pieces for a full circle.

 

I am supposing that your "simple O gauge track" is conventional old-style 3-rail. If it is something else, give us a better description.

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