I am classifying our club’s track, marking each piece with the diameter of the section. I have some odd arcs of track that are not long enough per section to make a full loop with 16 pieces.
I laid a 90 degree section on the floor and it seems to be 1/2" section too long or too short.
Did Aristo even make an 18 piece loop?
Don’t remember if it was 18 pieces, but yes they had some circles divided by other than 16.
David,
You can calculate the radius and number of degrees from the chord length and the arc height above the chord.
It’s a simple matter to subtract half the gauge from the outside rail radius to get the midline radius…
Sincerely,
Joe Satnik
Skip that.
Just download the free (for the first 50 pieces) track planning CAD program Anyrail.com.
http://www.anyrail.com/index_en.html
The Aristo library shows the same US track part number with different #s of sections/circle (??!!??) (16 or 18)
(They must have run out of part numbers, only 99,999 available with 5 digits…)
Hope this helps.
Sincerely,
Joe Satnik
Yes,
Back a long time ago they had some of the larger curves done in 18 piece circles.
I have a few boxs of SS 18 ft Dia curves that are 18 to a full box.
I needed to cut 2 of them in half to make a Rectangler floor display.
Thankfully it seems they stopped making 18 to a circle.
Nick
Dear All,
With my rectangular room and rectangular train board background,
it’s hard for me to imagine a company producing normal curves that couldn’t form a 90 degree turn.
(Mathematically, the #/circle would have to be divisible by 4.)
How did those 18/circle ever get into production?
Was there some hidden manufacturing advantage to 18/c ?
Sincerely,
Joe Satnik