glutTimerFunc...strange results? or is it me

Trying to implement a time, it sorta worked but it starts out really slow and then after a few seconds its going super fast, out of control fast…then it slows down…seem random as hell to me. Is it my code?

void timefunc(int val)
if(headrotate >= 360) headrotate = headrotate - 360;
headrotate -= 5.0;

And towards the end of my
Display function I have this line of code


Sorry for that last post, I figured it out…
I needed the
in my Main() function instead of my display function…