On Sun, 24 Aug 2003 21:13:50 +0000, bomar wrote:

Peggie-
Check your math....
Assuming true 1" and ¾" id, this is a reduction of 44% not 25%

3.14 (.5)² = .785
3.14 (.375)² = .4415
.4415 / .785 = .5625
¾" hose is 56% of 1" hose, so the ¾" hose is 44% smaller, not 25%


Not trying to justify my decision, but...a "1 inch" hose barb is actually
about 3/4" ID, which is very close to what my 3/4" ID thruhull is. So I
would have a 3/4" restriction in my system no matter what. The smallest ID
of my temporary system is 3/4", and it still will be when I convert back
to a 1.5" thruhull.

Lloyd