Train Tables
$$r = {x^2 + y^2 \over 2y}.$$
- r = radius of track
- x = radius of train table
- y = offest from centre of train table
380mm dia = 2nd of 5 tracks 628.238212101
2nd of 4 tracks 431.083808067
$$r = {x^2 + y^2 \over 2y}.$$
380mm dia = 2nd of 5 tracks 628.238212101
2nd of 4 tracks 431.083808067