Concentric Port Calculator
Input the size of the small tube and the wall thicknesses and it does the rest.
Play around with different wall sizes to arrive at the sizes you want.
If you are unable to source a pipe of a particular size, you can make it out of 2 layers of PVC pipe.
The software has an extra utility which will help you to work out how much to cut out.
Features of current version - V1.6
- Determine the diameter and endgap for each tube in a concentric port
- Design either 3-tube of 5-tube ports
- Design composite tubes of two layers of pipe
- Only works in mm - aplogies to UK and USA coneheads..
If you don't have them installed, you may need to grab the VB6 Runtimes - Windows XP already has them.
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