11/11/2023 0 Comments Inboard propeller bronze vs nibralThere is a lot of art here and inside of about a 3-4 knot margin for error, few prop shops will hit the planned numbers smack on the first time out (bust most will hit it the second time). Nibral or Nickle Bronze Aluminum wheels are 20 harder and 15 lighter than Manganese or Bronze wheels. I understand they're better for high HP application but I m just not sure they're worth it for 450hp and a 19/20kts boat. moderate beam (the Sun Sport has prop pockets) and an integrated transom. Nibral wheels are about 25-30 more than plain bronze. Every boat is potentially different and while I own Gerr's fantastic prop book and don't disagree with anything in it, I'd still state in confidence that not everything in propping a boat will effectively be figured out by predictive equations along. View pictures and details of this boat or search for more Sea Ray boats for. I don't know if the exact number is a knot or not, but that's a good idea of the ballpark we are talking about. If you are willing drop a knot in speed and not try to make it up by overpropping your pitch, then go with the brass and the savings. Since most owners do everything to get every last drop of speed out of a boat, including overpropping the boat and putting the entire engine at risk of an early death.well I guess whether the extra efficiency is really worth something is debatable. There is a noticable increase in efficiency with nibral props over brass. If the Shaft Savers are installed for their own benefits & not needed as spacers, it would be better to shorten the shafts to keep the prop hub optimally spaced behind the strut.Īt some point if you hit something hard enough, direct enough, the kind of prop you are running won't make a hill of beans difference. Like many boaters, I use the ShaftSavers as spacers to allow installation of Spurs line cutters, and accept the potential downside. While the two look very much alike, nibral is considered harder, stronger and more corrosion resistant. However, since it pushes the shaft/prop back close to 2"(?), it creates a tendency for somewhat quicker cutlass wear and vibration due to the extra vertical leverage of the shaft end when running in seas, and could even increase possibility of shaft weakening or worse. MaWhat is NiBrAl And how is it different from bronze In the realm of inboard propellers and ski wheels, we primarily see products made of Manganese Bronze VS NiBrAl which is an alloy blend with nickel, bronze, and aluminum. For example, a prop with 13-inch pitch should push the boat forward 13. They've never "sacrificed" so far, just flexed, but I do carry a spare. Minus: A Nibral (nickel, bronze and aluminum alloy) threeblade design. I think they have helped protect my boat's transmissions and to some extent the (nibral) props a number of times during flotsom strikes. Contact us today with questions or inboard propeller. The DriveSaver slightly-flexible/potentially-sacrificial coupling can be a great thing. Find quality Michigan Inboard Propellers available in 3, 4, & 5 blades in Bronze and NiBral alloys. "That problem can be over come by installing a Drivesaver between the shaft coupler and the transmission."
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |