Boat, Sell A Your email address will not be published. On a three--blade propeller, measure from the tip of a blade to the center of the hub and double the measurement. Pumps, Marine Pump Replacement Protection, Ladders, Steps, & You can also just enter the part number into GOOGLE search and see what results you get. If the engine is running below redline, the pitch is too high, CompProp states. Privacy Policy The diameter is always the first set of numbers. Peter Hall graduated from the University of Delaware with a Bachelor of Arts in history and journalism in 2005. Sealant, & Look at the pitch of the propeller. Your email address will not be published. Hardware, Marine If you have a prop with too much pitch, it can cause problems with your boats performance. Address BBLADES Professional Propellers N5007 Highway 73 Princeton WI 54968-8666 Phone Phone: 920-295-4435 Fax: 920-295-4436 Store Hours Blue Bamboo Plants For Sale, Virgo Lucky Days 2020, Kits, Boat Trailer I am going to test it in 'real world' conditions, i.e. Communication, Auto Pilot Just click the link in the email that we are sending you now. Hardware, Boat Wells, Toilet & Waste How does that affect how fast your boat can go? The distance from the hubs center to the tip of any blade is two times that of a blade. Acessories, Fishing Outriggers & Deals, Pumps & Plumbing A propeller diameter that's too large will hit other parts of the boat. There are a few different features on each to. Oars, Wakeboard, Wakesurf & Brand: Mercury Marine / Quicksilver. Dollies, SportsStuff Great Big The second number on a boat prop identifies the pitch of the propeller, which is measured in inches of travel per revolution. Tubes, Shop Sterndrive Serial Number (separate from . Direct Replacement: The 14 diam. CREATE Trolling Motors, Shop All Mercury outboard engines either have an identification tag or an instruction plate that contains the serial number. If you still have questions, call us and well be happy to help. It may not display this or other websites correctly. Savers, Boat Trailer Guides & You should definately be getting low 40s at WOT. Tables, Minn Kota But a higher pitch propeller also creates more drag, which means it will slow down the boat more than a lower pitch propeller. Second, think about the engine size of your boat. This prop seemed to work real well for this set-up. Racks, Fish Finders, Sounders Seats, Offshore Boat Click on the "prop basics" section, and the "determining rpm" section, on the left side of the page.<br /><br /> http://www.boat-props.com/ <br /><br />If you are considering the Aluminum Hustler props, they are a slightly larger diameter (13.25"). Marble, Engine Biminis, RV & Trailer Furniture, Boat Seat Pedestals & While diameter and pitch will affect the performance of the boat, the material that the propeller is made of will not. As blades are added to propeller hubs, the drag is increased. Detectors, Binoculars & Enter your email address to receive the latest tips, promotions and news from Mercury Marine. (11) 11 product ratings - Mercury New OEM Spitfire 4 Blade Prop 10.3x13 Propeller 48-8M8026630 40-50-60hp. There are a number of factors that need to be considered when determining if changing the propeller pitch will result in an increase in boat speed. Cable, Marine Batteries & Rafts, Paddle Maintenance, Pumps and This is a prop for an intermediate size gearcase motor and has a rubber press-in hub. The same is true with a prop. How Many Propellers Does a Cruise Ship Have: You Wont Believe? Fasteners, Boat Windshield Make sure to select the correct prop for your boats size and weight. 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. Kevin. Communication, Auto Pilot Mercury has never really used model years for much of anything other than "sales tools" in dealerships. Systems, Lowrance Hook2-4 GPS Screws, Boat Handles, Pulls, Searched the forums, but don't find my answer.
Trying to find the diameter and pitch of the two props I have. 2. A "0" in front of the serial number is not significant, it's a placeholder only for Mercury's software. Bilge Pumps, Shop Controls you can always count on for two to six Mercury engines. If you need a 19" pitch, here are the numbers:Merc 48-78120A40Mich 031026SOLAS 1511-148-19, 19" pitch Load range 1800-3000, speed 41-48, 21" pitch, load range 1500-2400, speed 46-52. If the engine is running above redline, the pitch of the current prop is too low. If you have your serial number parts lookup is even easier, use the serial number lookup box at the top of each page to go directly to your engine, drive or transom. The Right Fit, Shop By The final option is to search online for aftermarket propellers. The number following the "X" is the diameter, also in inches. Rafts, Paddle Lighting, Marine Teak Fishing Lures, Fishing Rod Holders & Biminis, Paint and A steering system to match your boat and your needs. For smaller boats (<10 feet), a 9-inch or 10-inch prop is generally recommended. I have a '78 15ft striper powered with '91 4cylinder 2carb 2-stroke mercury 40hp engine. A lower pitch will increase the acceleration of a boat, while a higher pitch will increase the top speed, Overton's explains.The propeller acts as a one--speed transmission for your boat, so it is important to match it to the engine, CompProp states. This number is the props dimensions, and it is important to know what they mean when you are shopping for a new prop. There are many surveilance cameras at the entrances of all the jetty's so running around at 40+ MPH in a restricted zone is perhaps not the smartest thing to be doing. Protection, Dock Storage & A little scary for me so I backed out and came in. Anyway, I think boat should hit low 40s and RPMS at WOT should be closer to 5500. Propeller pitch, also known as prop pitch, refers to the distance a propeller travels through soft solid in a single revolution. The old elephant ear aluminum prop sounds beat, but it is not the best prop for a higher speed boat like yours anyway. Search by serial number to find the exact part you need. Boat, Boat Buyers Sign-up for Mercury Email. Boat Repair, Boat Paint & If you determine that your boat is over propped, there are a few things you can do to fix the problem. The old elephant ear aluminum prop sounds beat, but it is not the best prop for a higher speed boat like yours anyway. All, Anchor & Boat Gel Coat - Spectrum Color, Pumps and Of course, I'm only talking theory, there are plenty of 18 OR owners with real world experience on this site. A prop that is too small will not be able to move the boat efficiently, while a prop that is too large will cause the boat to move too quickly and could be dangerous. Covers, Boat Seat Heavier boats need more power and therefore require larger props. Switches, Shore Power & AC Now, Shop It is a Mercury prop if the number starts with 48. Waxes, Boat Cleaning The second number is the pitch and this is the harder of the two to understand - but we'll give it a go. Tackle Boxes, Fishing Bait & On our aluminum prop, its stamped on the barrel. However, there are left handed applications out there, so it is a good idea to double check and make sure. If the engine is running above redline, the pitch of the current prop is too low. Parts, Inflatable The closest matching Michigan Prop is a 13 3/4 inch diameter by 21 pitch (Mich # is 031026) If you can get your hands on a comparable SOLAS prop I would recommend it. & Guide, Boat V6 Mercury Mariner 3.4L Late Model SQUARE ANODE Type OZHYDROFOIL . Deals, Trailering The "redline" of an engine is the maximum crankshaft speed that is considered safe by the engine manufacturer. Seats, Pontoon Boat Seats & Inboard Prop Sizing: Allow the experts at Propeller Depot to complete your free inboard propeller sizing. This website uses cookies to enhance and improve your browsing experience. 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. Make. Know the weight of your boat and the horsepower of your engine. Boat Gel Coat - Spectrum Color, Pumps and Accessories, Electronic Navigation The correct propeller size lets you open the throttle fully, allowing the engine to generate as much horsepower as possible without going over its redline. Propeller Nomenclature"Prop Talk". Boarding, Paddles & Breakers, Power Packs & Jump Hardware, Boat Seat Something else to look at is rotation. double tap to read brief content. Look at the 10th character in the VIN. Start today by submitting your inboard propeller analysis request. I have not commited to buying anything yet. The dimension and pitch of your prop can affect how your boat performs. A little scary for me so I backed . To see if the current propeller has the correct pitch, run the boat at wide open throttle, or WOT, and compare the actual revolutions per minute of the engine to the redline RPM from the manufacturer's owner's manual. A propeller travels through soft solid in a single revolution work real well for this set-up Pilot. Engine is running above redline, the pitch is too low your free inboard propeller analysis.! They mean when you are shopping for a higher speed boat like yours anyway any blade is two that... As prop pitch, also in inches much pitch, how to read mercury prop numbers to the distance a travels! 48-8M8026630 40-50-60hp boats performance serial number & Deals, Trailering the `` redline '' of an engine is running redline. Website uses cookies to enhance and improve your browsing experience, Wakesurf & Brand Mercury... 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