I did some rough math on my fins surface area to clarify any restriction questions. I found this kind of interesting actually.
The area of a Â½" circle is 0.19625
3.14 x (.25)Â²
The area of my fins is 0.1125
(.18 deep x .125 wide x 5 spaces)
While this may seem like restriction, consider this:
The cross sectional area of a bitspower fitting is 25/64ths, which is 0.11978
So in all actuality there is a 0.007280
restriction in the area where water will be passing through the fins. That is read as Seven Thousandths of an inch, or possibly the thickness of a 2 sheets of paper?
I try to design my blocks with the lowest restriction as possible using a Â½" pipe cross sectional area as a guideline. Sometimes I can get it, sometimes I just can't. Either way as long as my block channels have more cross sectional area then a bitspower fitting, then my block isn't what is restricting.Edited by nateman_doo - 4/14/11 at 10:02pm