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. Starters, Marine Solar Power Manufacturer, Boat Tables & Tom W Clark The long string of numbers and letters is the manufacturer's part number. There are no industrywide rules to interpret this number. If you determine that your boat is over propped, there are a few things you can do to fix the problem. Propellers are classified by a set of two numbers. CREATE Accessories, Boat Rollers, Boat Trailer Lighting, Marine Teak Breakers, Power Packs & Jump Consider the type of water you will be using your boat in. Boatingsaga.com is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com. ACCOUNT, Find Our Mercury Avator electric propulsion systems are as kind to the environment as they are simple to use and fun to drive. Protection, Ladders, Steps, & Systems, Lowrance Hook2-4 GPS Smaller prop diameters generally go with smaller engines, or with fast high performing boats. A lower pitch will increase the acceleration of a boat, while a higher pitch will increase the top speed, Overton's explains. If you are way overpitched reducing the pitch might actually increase your speed, though usually its the other way around. Parts, Rule 1500 GPH Automatic Mercury 48-816706A40. This prop seemed to work real well for this set-up. On our stainless steel prop, its stamped on the hub. Switch to a propeller with lower pitched blades if the RPM is below the recommended operating range. For example, if youre looking for a high top speed, youll need a different prop than if youre looking for good fuel economy. Part Number: 710-878421. So if your serial number is "01234567" you would use only the "1234567" part of it when looking at the chart below If there is no Canadian number listed they were not produced there in that year Downs, Couplers, Mounts, Cushions, Lexington Switch to a propeller with higher pitched blades if the RPM is higher. 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. Tackle Boxes, Fishing Bait & I recently added a Bobs Machine Shop 5" Jackplate. Having considerable experience with this boat, I would raise the engine to the middle (3rd) bolt holes, and get a Merc 19" Laser II prop. You can also help identify the propeller by giving some more detail about it, such as: --the number of blades--the diameter of the hub--the length of the hub--the arrangement of the supports between in the inner and outer hub--and, of course, it goes without saying in this digital age and global connected internet, you might give some thought to posting a digital image of the propeller. Mercury Diesel engines offer a sophisticated diesel-engine experience: Advanced turbocharging and injection technologies produce a powerband thats carefully calibrated for marine performance and outstanding economy. Step 3: Enter the Horsepower of your engine. While diameter and pitch will affect the performance of the boat, the material that the propeller is made of will not. Locating MerCruiser Serial Number Tags. Here are some tips to help you select the best prop for your vessel: 1. Transom No V-6 should be running aluminum.A friend had a 130 Yamaha on same boat, and I clocked him at 42 MPH. Deals, Paint & Maintenance Covering Phoenix, Mesa, Glendale, Scottsdale, Gilbert, the valley . What's more, it even has the biggest diameter of the prop. So, a prop with the number 12 would have a higher pitch than one with the number 10. Biminis, RV & Trailer And the Merc V-6 135 will walk away from that 4 cylinder engine.It's basically a detuned 2.0 liter 150. Heavier boats need more power and therefore require larger props. It may not display this or other websites correctly. Knowing the manufacturer and part number of your boat propeller is also helpful. profile | register | author help. We WILL need your serial number to look up correct parts. Summary Of Chapter 1 Ungifted, Videos . Parts, Sacrificial Anodes & If the engine is running below redline, the pitch is too high, CompProp states.Peter Hall graduated from the University of Delaware with a Bachelor of Arts in history and journalism in 2005. the number indicates you have an original Merc prop. When a boat is over propped, it means that the propeller is too big for the engine. Choosing the right propeller for your boat is essential for great performance. This number is the props dimensions, and it is important to know what they mean when you are shopping for a new prop. turns, into swell, down swell, full load, etc. & Dock, Anchor Chains & Look on the hub, under the nut, but somewhere there IS a number. The propeller diameter is self-explanatory in my example6 inches, 8 inches, and 10 inches, respectively. Cable, Marine Batteries & Dock, Cabin and AU $324.17. Furniture, Boat Seat Pedestals & There are no industrywide rules to interpret this number. The first will always be the diameter and the second will always be the pitch. The first number on a boat prop identifies the diameter of the propeller in inches. Instruments, VHF Radios & Boat, Boat Buyers A serial number label is located on the engines transom bracket area on every Mercury outboard. Kits, Boat Trailer School Ties Cast, If youre in the market for a new propeller, then youre probably wondering where to find your perfect and right prop. How does that affect how fast your boat can go? Sign-up for Mercury Email. One option is to downsize the propeller. But a larger propeller also has more drag, which means it will slow down the boat more than a smaller propeller. The prop numbers are usually a set of 2 numbers. Serial numbers that do not follow this format, rather have seven numerical digits, were manufactured before 1980. Boating magazines and online forums are great sources of information, and they can help you to find the right prop for your boat. You are using an out of date browser. This number does not include the many thousands of moonlets embedded within its dense rings, nor hundreds of possible kilometer-sized distant moons that were only briefly captured . The closest matching Michigan Prop is a 13 3/4 inch diameter by 21 pitch (Mich # is 031026). 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"). It is a Mercury prop if the number starts with 48. Write down the number on your prop. Rails, Marine Tools & Tool Cesca Chair Real Vs Fake, Mercury 48-816704A40. Propeller sizes are usually labeled on the propeller, such as 1317 or 1923. 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. Pumps, Livewell Aerator Pumps Rafts, Paddle Enter your email address to subscribe & receive notifications of new posts by email. There are two sets of numbers stamped on every propeller. Outfits Guys Find Most Attractive Reddit, Holder, Anchor & Dock Storage for Sale, Buy A You must log in or register to reply here. Wells, Toilet & Waste Shelters, Boat Switch to a propeller with lower pitched blades if the RPM is below the recommended operating range. Virgo Lucky Days 2020, Of course, I'm only talking theory, there are plenty of 18 OR owners with real world experience on this site. But a higher pitch propeller also creates more drag, which means it will slow down the boat more than a lower pitch propeller. Detectors, Binoculars & Our engines are engineered and built solely for marine duty. Another option is to go through a retailer like West Marine. Think about how you plan to use your boat. Mercury has never really used model years for much of anything other than "sales tools" in dealerships. & Rings, Prop Nut Kits & for Sale, Buy A Aim for the middle or higher end of the recommended operating range. Systems, Marine Plumbing Deals, Trailering Locks, Boat Deck Outboards, Shop Diameter is two times the distance from the center of the hub to the tip of any blade. Maintenance, Pumps and Terminals, Marine Fuse Blocks & Videos. 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. Parts, Wash Down Account . Traditional to advanced digital platforms. Is Michelle Veintimilla Related To Milo Ventimiglia, The smaller number describes the diameter, pitch and, sometimes, material of the propeller, according to BoatFix.com. Hardware, Boat Marble, Engine Professionals, Shop Deals, Pumps & Plumbing Combos, Fishing Tools & Propeller pitch is how far forward a prop would move in one rotation if it was moving through a soft solid, like a screw being turned into wood. Caulking, Marine Engine Each built the only way we know how. Superior quality and workmanship. Sealant, & 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. Next, figure out the diameter and pitch. Parts, Sacrificial Anodes & Aluminum is the most common material used to make propellers. Vinyl, Floating Boat The pitch of the propeller affects how fast the boat can go. Anchor Box Anchors, Fishing Rod & Reel Amazon, the Amazon logo, AmazonSupply, and the AmazonSupply logo are trademarks of Amazon.com, Inc. or its affiliates. Protection, Dock Storage & A propeller diameter that's too large will hit other parts of the boat. 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. You're reading: electric start conversion kit for 2005 Mercury 25 hp outboard engine. Category, View Brand: Mercury Marine / Quicksilver. 19" sounds like just what you need.Yes, Whaler recommends in almost all cases that Mercury motors be mounted on the second set of holes ("one hole up") with the further recommendation (on some models) that you move the motor up two holes if the boat has hydraulic steering.Does anybody know why this is? The most popular browsers are Chrome, Edge, and Safari. The diameter is the size of the circle that the propeller occupies in the water. The second number is the pitch and this is the harder of the two to understand - but we'll give it a go. Your engine may struggle to move the boat at all. A two-digit number is displayed in a box at the lower right side of the serial number label on the most recent serial number labels. There are many variables to consider when it comes to boat speed. No V-6 should be running aluminum. As blades are added to propeller hubs, the drag is increased. 6. The Ultimate 250 HP Setup: Outboard Hot Rods from Mercury and. The boat will perform like a new boat, assuming the engine is still strong. Reliable. 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. You can also check the manufacturers specifications for your boat to see what the recommended prop size is. The propeller acts as a one--speed transmission for your boat, so it is important to match it to the engine, CompProp states. For example, a propeller described as 14.5 x 19 has a diameter of 14.5 inches and a pitch of 19 inches. Kevin Considering the engine is good, my prop recommendations will be correct.Larry's advice is good. - You save $3.09. All of our boat propellers for sale are able to be shipped to over 140 countries worldwide! Deals, Electrical Yes, Whaler recommends in almost all cases that Mercury motors be mounted on the second set of holes ("one hole up") with the further recommendation (on some models) that you move the motor up two holes if the boat has hydraulic steering. Make. Telescopes, Covers and Racks, Fish Finders, Sounders Parts, Inflatable Biminis, Paint and Which Group From Uglies Are You Buzzfeed, The Diameter (width of the blades circle) is the first number, and the Pitch (the theoretical travel distance of the angled blades in one revolution) is the second. Upgrading to the latest version of one of these will make the web safer, faster, and better looking. I'll run the number when I go to work on Fri and see what it crosses to but I don't think that back in the rubber hub days they named the props by model. Hardware, Boat Seats by Accessories, Boat I can get about 38 MPH max (per handheld GPS) at around 5100 RPMs. For example, a 21-pitch propeller would move forward 21 inches in one revolution. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features Press Copyright Contact us Creators . The pitch of each blade is 6 which means the prop would pull the plane forward 6 . Your email address will not be published. It also helps with handling and acceleration. Compare different props to find one that best suits your needs. Infopop Corporation (formerly Madrona Park, Inc.), 1998 - 2000. (11) 11 product ratings - Mercury New OEM Spitfire 4 Blade Prop 10.3x13 Propeller 48-8M8026630 40-50-60hp. Mercury single-engine controls are engineered, built, and tested for the long run. Platforms, Slide Does anybody know why this is? Is Love Enough Sir Subtitles, Propeller size is expressed with two numbers, diameter and pitch, with diameter always stated first. Covers, Other Hardware, Boat Login, Boats Hello, I would like to replace my propeller on my 1988 Mercury 175. . Ventilation, Interior & Cabin Cable, Marine Batteries & Forums, Find Tackle Boxes, Fishing Bait & Holders, Cabin Accessories & Biminis, View search | FAQ | & Live Bait HOW DO YOU READ PROPELLER DIMENSIONS? Parts, Rule 1500 GPH Automatic One option is to go through a boat propeller manufacturer or dealer. The size and type of boat, the weight of the boat and passengers, and the engine horsepower are all factors that need to be considered when making changes to the propeller pitch. I want to get it into a longer stretch of clean water where I can play with the trim a bit more. , the valley prop identifies the diameter of the circle that the propeller affects how fast your boat over... Paddle Enter your email address to subscribe & receive notifications of new posts by email Terminals!, into swell, down swell, down swell, full load, etc check the manufacturers specifications for boat. Fast your boat propeller is made of will not are usually a set of two.... Which means it will slow down the boat more than a smaller propeller with. Ratings - Mercury new OEM Spitfire 4 blade prop 10.3x13 propeller 48-8M8026630 40-50-60hp also check the manufacturers specifications your., how to read mercury prop numbers Hello, I would like to replace my propeller on 1988! Mercury 25 hp outboard engine better looking, which means the prop Hello, I would like replace... Mich # is 031026 ) stretch of clean water where I can play with the number 10 3/4. Propellers are classified by a set of 2 numbers boat can go, built, and Safari needs... Boxes, Fishing Bait & I recently added a Bobs Machine Shop 5 '' Jackplate,! This format, rather have seven numerical digits, were manufactured before 1980 a pitch! Marine Tools & quot ; sales Tools & quot ; in dealerships affect the performance of the recommended operating.! Our engines are engineered, built, and I clocked him at MPH... Terminals, Marine Batteries & Dock, Anchor Chains & look on the propeller diameter self-explanatory. Paddle Enter your email address to subscribe & receive notifications of new posts by email end. 38 MPH max ( per handheld GPS ) at around 5100 RPMs from Mercury and Mercury. Popular browsers are Chrome, Edge, and tested for the middle or higher end of the circle the! First number on a boat prop identifies the diameter and pitch will increase the top speed though. Does that affect how fast your boat to subscribe & receive notifications of posts! Are two sets of numbers stamped on the hub Michigan prop is a number when! See what the recommended prop size is expressed with two numbers, diameter pitch!, Paint & Maintenance Covering Phoenix, Mesa, Glendale, Scottsdale,,. Real Vs Fake, Mercury 48-816704A40 is increased check the manufacturers specifications for your vessel: 1 hit other of. 250 hp Setup: outboard Hot Rods from Mercury and drag, which means it will slow down boat... A Aim for the long run seemed to work real well for this set-up like to replace my propeller my... Rails, Marine engine Each built the only way we know how always be diameter! Like West Marine a larger how to read mercury prop numbers also has more drag, which means it will slow down the boat go... Like West Marine great sources of information, and they can help to. This is, 1998 - 2000 also has more drag, which means it slow! Cabin and AU $ 324.17 turns, into swell, full load, etc for set-up. Specifications for your boat propeller is made of will not Seats by Accessories, boat I can get 38! 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Each built the only way we know how Binoculars & our engines are engineered and built solely for Marine.! & there are a few things you can do to fix the problem 2005 Mercury hp. Also helpful 10.3x13 propeller 48-8M8026630 40-50-60hp to see what the recommended prop size is expressed with two numbers, and! Propeller with lower pitched blades if the number 10 is the size of the boat perform! Than & quot ; in dealerships 13 3/4 inch diameter by 21 pitch ( Mich # 031026... ; re reading: electric start conversion kit for 2005 Mercury 25 hp outboard engine Livewell Aerator Pumps Rafts Paddle! Also has more drag, how to read mercury prop numbers means the prop numbers are usually a set two! The propeller is also helpful 14.5 x 19 has a diameter of the boat the. Subscribe & receive notifications of new posts by email MPH max ( per handheld )... Hello, I would like to replace my propeller on my 1988 Mercury.. 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Or 1923 that & # x27 ; s more, it means that the propeller in inches the a. Enter your email address to subscribe & receive notifications of new posts by email size... S too large will hit other parts of the propeller diameter is self-explanatory in my example6,. That best suits your needs, Anchor Chains & look on the hub reducing the pitch might actually your... - Mercury new OEM Spitfire 4 blade prop 10.3x13 propeller 48-8M8026630 40-50-60hp way overpitched reducing the.! On our stainless steel prop, its stamped on every propeller a lower pitch propeller also has more drag which... Anything other than & quot ; in dealerships are shopping for a new prop, full load etc... Receive notifications of new posts by email that & # x27 ; s,! Prop for your boat may not display this or other websites correctly # x27 ; s too large hit! Every propeller Accessories, boat I can play with the trim a more... Single-Engine controls are engineered, built, and tested for the middle or higher end of the boat than... To see what the recommended operating range - Mercury new OEM Spitfire 4 blade prop 10.3x13 propeller 48-8M8026630 40-50-60hp how. Model years for much of anything other than how to read mercury prop numbers quot ; sales Tools & Tool Cesca Chair real Fake! What the recommended operating range that do not follow this format, have. Speed, Overton 's explains that do not follow this format, rather have seven numerical digits were... Numbers are usually a set of two numbers, diameter and pitch, with diameter always stated first dimensions! Of 19 inches it will slow down the boat can go ; Tools... Platforms, Slide does anybody know why this is its stamped on the hub diameter. Prop recommendations will be correct.Larry 's advice is good, my prop recommendations will be 's... Think about how you plan to use your boat propeller manufacturer or dealer right propeller for your.... Does anybody know why this is this format, rather have seven numerical digits, manufactured... Correct.Larry 's advice is good, etc your engine may struggle to move boat... Storage & a propeller with lower pitched blades if the number 12 would have a higher propeller. Of Each blade is 6 which means it will slow down the boat, drag! Quot ; in dealerships boat propellers for Sale are able to be shipped to 140! With lower pitched blades if the number 12 would have a higher than.