02-24-2006, 05:44 PM #1
- Join Date
- Feb 2006
Rive grate, knife edge or leave stock?
02-24-2006, 05:49 PM #2
02-24-2006, 06:15 PM #3
Leave stock. Rounded leading edges are much better for water flow.
Think of it like an airplane wing. The leading edge is rounded for a reason
02-24-2006, 06:46 PM #4
What Jerry said , never kife the edge it will cause cavitation because of the severity of the angle it creates.
Rounded edges provide a better laminar flow around the edge, better flow. We have seen sharpened edges cause a 1mph loss in top-end speed. No kidding.
02-24-2006, 06:54 PM #5
i knife edged the bars on a stock grate and lost 3.7 mph
02-24-2006, 07:18 PM #6
blunt on the front or leading edge, thinned some on the back to make it more tear drop shaped, generally smoothed all over. I've seen a small gain(.1-.2) doing stock grates this way on GTX Ltd's, not worth pulling the grate for, but it is one of those little things that adds up.
02-24-2006, 09:44 PM #7
Piston, Jerry, and GTXX are dead on. Never knife-edge. It's easier for the water to flow around a rounded edge. As water approaches a knife-edge at an angle, it will cavitate behind it.
02-24-2006, 10:25 PM #8
- Join Date
- Jan 2006
- Rydal, Georgia U S A
Me and my better idea's...wonder how good it could have been?
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