// from schematic http://goo.gl/96RKol
collar_radius = 9.2 / 2 + 0.25;
nubbin_radius = 4.48 / 2;
screw_radius = 2.9 / 2 + 0.35; // a little bigger so screws fit through

motor_height = 22.23;

// http://freespace.virgin.net/matt.waite/resource/handy/screwsize.htm
_6_radius = 3.5 / 2 + 0.25;

// measurements we made up:
mount_total_x = 38;
mount_total_y = mount_total_x;
mount_total_z = 3.175; // 3/16 in mm