Megasphere Calculator

For Sonostar Megahubs and 1” or 1 ½” PVC Pipe

This calculator accurately measures all the strut lengths for your sphere and automatically deducts the 4” from the vertex-to-vertex length numbers to account for the width of the megahubs. Input the radius of the sphere you want to build on the page with the frequency you've chosen. Using 1” PVC, you can go with a diameter as small as 10’ without having to heat-bend your struts. You shouldn't try to make a 2V 1 ½” PVC sphere with a diameter of anything less than 15’. If you’re hanging your sphere with a lot of weight on it or in it, it’s best to attach the sphere in at least 5 places, so that all the weight is not concentrated on just the top hub.

  • 2V Sphere
  • 3V Sphere
  • 4V Sphere
  • 5V Sphere
  • 6V Sphere
Radius: ft.
Length (inch) Length (cm) Color Strut Count
A - - Yellow 60
B - - Blue 60
4 Star base hardcore geohub 0
5 Star hardcore geohub 12
6 Star hardcore geohub 30
Diameter -

Sphere Calculator for 2V

Radius: ft.
Length (inch) Length (cm) Color Strut Count
A - - Yellow 60
B - - Blue 90
C - - Red 80
4 Star base hardcore geohub 15
5 Star hardcore geohub 12
6 Star hardcore geohub 80
Diameter -

Sphere Calculator for 3V

Radius: ft.
Length (inch) Length (cm) Color Strut Count
A - - Yellow 60
B - - Red 60
C - - Blue 120
D - - Green 120
E - - Purple 60
F - - Orange 60
4 Star base hardcore geohub 0
5 Star hardcore geohub 12
6 Star hardcore geohub 150
Diameter -

Sphere Calculator for 4V

Radius: ft.
Length (inch) Length (cm) Color Strut Count
A - - Yellow 60
B - - Blue 30
C - - Red 60
D - - Purple 90
E - - Green 70
F - - Orange 60
G - - Pink 130
H - - Tourquoise 65
I - - Brown 60
4 Star base hardcore geohub 30
5 Star hardcore geohub 6
6 Star hardcore geohub 160
Diameter -

Sphere Calculator for 5V

Radius: ft.
Length (inch) Length (cm) Color Strut Count
A - - Yellow 30
B - - Blue 30
C - - Red 60
D - - Purple 90
E - - Green 30
F - - Orange 60
G - - Pink 130
H - - Tourquoise 65
I - - Brown 60
4 Star base hardcore geohub 30
5 Star hardcore geohub 6
6 Star hardcore geohub 160
Diameter -

Sphere Calculator for 6V