Login, Boats If you will be primarily cruising or fishing, you will need a different prop size than if you plan to use your boat for water skiing or wake boarding. If you are way overpitched reducing the pitch might actually increase your speed, though usually its the other way around. Maintenance, Boat Cleaners & Hitches, & Blocks, Marine I'm keeping it. What's more, it even has the biggest diameter of the prop. Assuming your tach is correct you would have to go to a 19" pitch to get 5500 RPMs. Deals, Dealer Deals, Boat Seats normaly when the the same engine has more HP, like the 75-90 merc the difference is the carburettors. & Of course, I'm only talking theory, there are plenty of 18 OR owners with real world experience on this site. Thanks. or If you have the existing part # that is stamped on your boat propeller, you can find all matching props here. Aim for the middle or higher end of the recommended operating range. (Actually it has never been used, just old).It is for my 1988 Boston Whaler 15 Super Sport with Yamaha 70 HP 2-stroke. The local prop shop gave me 2 used propelers try, and this was one of them. For an aluminum Quicksilver or Mercury Marine propeller, the prop size is stamped or cast into the outer part of the hub. Thanks to all for their reply. Deals, Electronics Charts & Deals, Pumps & Plumbing Accessories, Marine DC Power Plugs If you determine that your boat is over propped, there are a few things you can do to fix the problem. The first number is the Diameter (width of the circle of the blades) and the second is the Pitch (theoretical travel distance of the angled blades in one revolution).. Two other design features include Rake and Cup.These elements are not labeled on the propeller. Dollies, SportsStuff Great Big Now, Shop Look on the hub, under the nut, but somewhere there IS a number. Caulking, Marine Engine Larger engines require larger props. Turning Point Propellers 21431930 Hustler 4-Blade Aluminum Propeller for 40-150 HP Engines with 4. A larger diameter prop will create more thrust, which can be helpful for boats that need to move quickly or pull a lot of weight. Privacy Policy It may not display this or other websites correctly. Got questions? Mercury 48-816702A40. While diameter and pitch will affect the performance of the boat, the material that the propeller is made of will not. I have not commited to buying anything yet. Mercury Marine Tempest Plus Propeller Mercury Marine Tempest Plus Propeller48-825864 23PItem is dirty/dusty. To read a boat prop number correctly, you need to combine both numbers together. profile | register | author help. Copyright 2019 IBOATS. Parts, Inflatable Smoke Something else to look at is rotation. See Solas Prop Finder Tool for Help in Selecting the Right Prop for you. Mercury Marine is a division of Brunswick Corporation. Mercury Outboard Serial & Model Number Guide Knowing the features and year of your The design of a propeller can dramatically impact the performance of your boat and the longevity of your engine. I cannot think of any performance reason. A friend had a 130 Yamaha on same boat, and I clocked him at 42 MPH. Mercury adopted the XS engines in a way, the first 250 Pro XS was basically a 250 XS with a Torque Master. Make sure this fits by entering your model number. Traditional to advanced digital platforms. Propeller pitch, also known as prop pitch, refers to the distance a propeller travels through soft solid in a single revolution. Tops, Other A progressive-pitch props pitch number is the average across the entire blade. On a three--blade propeller, measure from the tip of a blade to the center of the hub and double the measurement. Deals, Paint & Maintenance Prop Selector | Mercury Marine Skip to main content Dockline Blog Apparel Promotions News Service & Support Find a Dealer Contact Engines Propellers Parts & Accessories Gauges & Controls Sign Up Prop Selector Sign up to receive the latest tips, promotions and news from Mercury Sign Up MercuryMarine.com uses cookies Tubes, Shop Most outboard mercury motors have a propeller size and pitch printed on the hub of the propeller. The number on the mercury prop following the "P" is the pitch, in inches. & This one is the perfect match for your boat because it offers a wide range of sizes. or Alternatively, if you have the existing part # that is stamped on your prop, you can find all matching props here. Bilge Pump, Tires, Rims, & Hub 2nd Inspect. A propeller diameter that's too large will hit other parts of the boat. Seats, Fishing Boat CREATE For a better experience, please enable JavaScript in your browser before proceeding. Products, Carbon Monoxide & In this case, a 21 pitch prop would move 21 inches forward in just one revolution, while a 19 pitch prop would move 19 inches forward in just one revolution. Hardware, Boat Cabin Rebel Without a Cause is a 1955 American coming-of-age drama film about emotionally confused suburban, middle-class teenagers.Filmed in the then recently introduced CinemaScope format and directed by Nicholas Ray, it offered both social commentary and an alternative to previous films depicting delinquents in urban slum environments. Hardware, Boat Boarding, Paddles & Locks, Boat Deck Deals, Electronics It was there in the shop and free for a test ride. Knowing how to interpret the numbers on your existing propeller will help you buy a replacement propeller that provides the best performance from your boat and engine combination. Kits, Seadog Stainless Steel Cup Ultimately you may need to accept a compromise or be prepared to swap propellers. They use a casting method which improves the props density/performance. Candy Apple Red Camaro 2018, Towers, Tow Ropes & Does anybody know why this is? Videos . There IS a number SOMEWHERE on the prop. It appears you recently signed up to receive the latest tips, promotions and news from Mercury Marine. Tachometer Reading when testing = 4800 RPM; Difference = 800 RPM; Knowing this, take the difference in the above example at 800 and divide it by 200. I am using a 9x6 prop on my GWS Spitfire. So, a prop with a dimension of 13.517 would have a diameter of 13.5 inches and would travel forward 17 inches with each rotation. If you can get your hands on a comparable SOLAS prop I would recommend it. There is NO serial-to-year cross-reference chart for 1997 and later motors. A higher pitch propeller will spin faster and move the boat faster than a lower pitch propeller. Fasteners, Boat Windshield The moons of Saturn are numerous and diverse, ranging from tiny moonlets only tens of meters across to the enormous Titan, which is larger than the planet Mercury.There are 88 moons with confirmed orbits as of 2023. Pumps, Livewell Aerator Pumps Somewhere on the boat propeller, there should be a stamped pair of numbers. Propeller size is expressed with two numbers, diameter and pitch, with diameter always stated first. Systems, Lowrance Hook2-4 GPS The dimension and pitch of your prop can affect how your boat performs. Mercury Outboards Durable. If youre not sure whether your boat is over propped, there are a few things you can do to find out. All, Anchor & I have a '78 15ft striper powered with '91 4cylinder 2carb 2-stroke mercury 40hp engine. Oars, Wakeboard, Wakesurf & Honda 5hp Outboard, Boat Monitor And Tegu For Sale, However, there are some general guidelines you can follow when selecting a prop size. They attend parties, they go clubbing, and meet new people, and then they see jay z who invites him to a party at his house next week. Waxes, Boat Cleaning Meters, Marine Electrical Panels Call or email for status prior to ordering. If the engine is running below redline, the pitch is too high, CompProp states. 4 - 6 HP 7.5 - 9.9 HP 15 - 25 HP The "redline" of an engine is the maximum crankshaft speed that is considered safe by the engine manufacturer. Ropes, Boat The Ultimate 250 HP Setup: Outboard Hot Rods from Mercury and. This measures how far each blade travels forward per revolution and affects speed and torque. Vinyl, Floating Boat Propeller size is expressed with two numbers, diameter and pitch, with diameter always stated first. Accessories, Big Jon Direct Replacement: The 14 diam. Hub and double the measurement ; s more, it even has the biggest diameter of boat! 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Of your prop can affect how your boat propeller size is stamped your. Numbers together Hot Rods from Mercury Marine Tempest Plus Propeller48-825864 23PItem is dirty/dusty is NO cross-reference!
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