Sorry if this is not in the correct forum.

find X/Y/Z points on spherical helix-spherical_helix.jpg

I would like help finding the X/Y/Z coordinates of points spaced .375" apart on a .300" lead spherical helix. I have the following formulas to find the coordinates at t position on the sphere where t=1 is the top of the sphere and t=0 is the center of the sphere.
$\displaystyle rzt$ is radius of sphere at $\displaystyle t$-X/Y plane of sphere
$\displaystyle sr$ is sphere radius
$\displaystyle t$ is % from sphere center to top of sphere
$\displaystyle xt$ is X postion on sphere at $\displaystyle t$
$\displaystyle yt$ is Y position on sphere at $\displaystyle t$
$\displaystyle zt$ is Z position on sphere at $\displaystyle t$
$\displaystyle rzt = \sqrt{sr^2-zt^2$
$\displaystyle zt = sr*sin(90*t)$
$\displaystyle xt = rzt*cos(t*360*2*\pi*sr*90/360/.3)$
$\displaystyle yt = rzt*sin(t*360*2*\pi*sr*90/360/.3)$

Thank you!