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-   -   Flex track radius (https://www.modeltrainforum.com/showthread.php?t=185288)

tommy24a 11-04-2019 04:08 PM

Flex track radius
 
How do I go about knowing the radius of my flex track 3ft ho scale as I am putting down my track? Am I making sense?
Thanks!

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Dennis461 11-04-2019 04:26 PM

normally (for me) draw lines first using a home made 'compass".
Or use a piece of sectional track to draw outlines.

Cut a pizza box to the radius you want, use it as a template.

tommy24a 11-04-2019 04:44 PM

Quote:

Originally Posted by Dennis461 (Post 2467704)
normally (for me) draw lines first using a home made 'compass".
Or use a piece of sectional track to draw outlines.

Cut a pizza box to the radius you want, use it as a template.

We have a track plan on paper so we are going by that generally..but its all flex track...want to make sure we are not making to sharp of a radius. How do we go about knowing the radius?

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CTValleyRR 11-04-2019 06:17 PM

Quote:

Originally Posted by tommy24a (Post 2467722)
We have a track plan on paper so we are going by that generally..but its all flex track...want to make sure we are not making to sharp of a radius. How do we go about knowing the radius?

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Are you saying that your track plan doesn't give you the radius?

Dennis gave you several ways to mark that radius on your layout surface so that you have a guide to follow as you lay the track.

There are also commercial radius templates available from half a dozen companies, in metal, plastic, or wood.

Dennis461 11-04-2019 06:47 PM

draw it on paper to scale. Grammar school graph paper, for example 1 square equals 2".

Put dimensions for edges of table, post it here.
We can give you a rough idea.

For example, a circle fitting in a 40" square layout will be around 18" radius.

tommy24a 11-04-2019 07:39 PM

The plan that we are working from is on grid paper. 1ft squares pic belowhttps://uploads.tapatalk-cdn.com/201...46e95eb8d5.jpg

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MichaelE 11-04-2019 08:45 PM

When you laid this out on grid paper did you measure with a divider or compass on a ruler before drawing the curve?

How big are the squares? Are they a half inch, three quarters of an inch, one inch?

Dennis461 11-04-2019 08:50 PM

So, it is 13' wide 22' long.
Curves seem to be 24" radius. No problem using flex track.

tommy24a 11-04-2019 10:02 PM

I think u are correct..found some note from my buddy who did the track plan using software an it states 24" radius. Should of dug deeper in my notes!

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wvgca 11-05-2019 07:44 AM

Radius is measured to the center of the track, [usually where the holes are] ,not inside or outside, just a fyi


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