Discussion in 'N / Z Scale Model Trains' started by plbab, Jan 31, 2003.

1. ### plbabMember

I have 2 foot wide modules will i only be able to get 11 inch curves? I am working in N scale. If i use a yard stick and put a pencil at 11 inches will that give me a 11 inch radius? Paul
2. ### Drew1125Active Member

11" radius curve will make a circle 22" in diameter ...& that's about as wide as you can safely turn a train in a 24" space...in fact, even then those trains are really going to be hugging the edge of that table...remember - the curve radius is a measurement of the track;s centerline . (the point halfway between the rails)
3. ### 60103Pooh Bah

Paul:
you need 2 points to get a radius. Unless you have a yardstick with extra wood befow the first inch, you will need to put a point (nail, push pin, ) in a bit from the end (I drill a hole at the 1" mark) and drill another hole for a pencil at the 12" mark (11"+1").
I also make two extra holes beside the nail hole to mark either rail position or end of ties.
I also make extra pencil holes for more radii.
If you're not going over 11", you might get away with using a foot ruler; yardsticks tend to bash against the walls.
I agree with Charlie about the radius being a bit close to the edge. If it's against a wall, you may find long cars or locomotives hitting the wall.
4. ### Sir_TainlyMember

How very timely I was going to post a question about radus measurements..but that clears it up for me..the radius is measured via the outside rail

thanks (even if you didn't know you were helping )

Simon
5. ### 60103Pooh Bah

Simon:
Radius is measured to the centerline of the track. This lets you make reverse curves without making allowance for the gauge.
(Exception: Lionel measures diameter over the outside of the ties/sleepers.)
Laying out the extra lines that I suggested just makes tracklaying easier.
6. ### Sir_TainlyMember

Thanks David,

so in fact my 12" radius curves if laid in a 180 degree arc would take up 24" + the width of the track (9mm or approx 3/8") .

Good to know this before I start squeezing my flexitrack onto the back of an old door

I was planning to start building the base of my new layout last weekend but I wanted to work outside to saves vacuuming up polystyrene bobbles ) but it snowed

Cheers

Simon
7. ### billkActive Member

Or + the length of the ties, or + the width of the roadbed you're using. (Depending on what you're willing to have hanging over the edge - hopefully nothing!)
8. ### Sir_TainlyMember

ahy good point I'm using Woodland scenics road bed..or will when it arrives I have it on back order with the stockist..suddenly the vast expanse I seemed to have gain by going "N" seems to be shrinking Why do I have to live in a shoe box ??? A most railroad unfriendly house
9. ### swissjohnMember

For "shoe box" read......."An average British home"
I too have the same problems your Lordship
John.
10. ### Sir_TainlyMember

Hi John,

actually mine is on the small side as it's only 2 bedroom..a side effect of having to live in the most expensive place for houses in the UK, outside London Still at least it means I can work and have money for trains (even if I lack space to use them )

Simon