I am trying to get a better understanding of how different types of blades actually function. I have never had this explained to me, and I find it very interesting, which makes me want to try different types of blades. I have a Hustler Super Z 60 / 28 EFI with new style deck with fusion medium lift blade. The following reply was by gene gl to my previous post on the Hustler forum. Can you please explain further? -I have been experminting this season with blades also. As P&J said, any 21" flat blade with a 5/8" hole will work in a 60" Hustler deck. There is a differance between blades from different manufactures. You need to try different brands to see what will work best in your mowing conditions. The Fussion blade from Oregon Corp. has a "bent" sail that is 1.100" tall and distributes the clippings more evenly throughout the discharge opening, but not as far. I prefer a "stamped" sail because it discharages toward the front of the deck opening and has more "air" volume. I tried a Scag blade that had a .900" lift that worked good. I tried a Bobcat blade that had a 1.100" of lift that was OK but didn't have a good volume of air flow because the lift was short in length. Oregon makes a "high" lift for Ferris that is 3" wide and has a stamped sail that is 1.450" high. This blade draws as much power as running doubles. I have a 25 HP Kowie and I think it is maxed out with this blade. It will discharge 3 cuts over. If I had a 27 or 28 HP unit this blade would be my every day blade. 1. Please explain how different heights of sail on a blade effect discharge. 2. Does the height of sail create a turbulance under deck lifting grass before it is cut or only after it is cut? 3. What is the difference between a "bent" sail and a "stamped" sail? I looked at blades today from several different companies and the sail on all blades looked like the bend of the sail was a smooth curve. 4. Does the "height or the length" of the sail determine how far the clippings are discharged? 5. What is more important, discharge distance or how fine the clipping are cut? 6. Why does a taller sail create more drag against the motor. 7. Why do the scag blades have a notch cut out in front of the sail? 8. What is the accurate way to measure the length of the sail? Any other information you can give me about how different sails function would be greatly appreciated. The more you learn, you realize how little you know. Thanks for sharing your knowledge.