Mercury prop pitch calculator

Most boats experience some "slippage" between the blades and the water. Find your ideal Mercury Prop in 5 steps or less. Address BBLADES Professional Propellers, LLC N5007 Highway 73 Princeton WI 54968-8666; Phone Phone: 920-295-4435 Fax: 920-295-4436 Store Hours The results are in – a 300R FourStroke spinning a 31-inch pitch MAX5 ST prop powered a tournamentloaded Bullet 21 XRS bass boat to 97. These props feature interchangeable Hub Kits allowing them to fit a wide variety of different motors at an affordable price point. Silverado, Lightspeed, Thunderbolt and Torrent Mercury Quicksilver stainless steel propellers are identical to the Mercury Black Max Vengeance, Laser II, Mirage Plus, Tempest Plus and High Five stainless steel props except they do not have their name on the barrell part of the prop and they have a Pitch is the theoretical distance (e. Hubs are purchased separately from props. It can also be looked at as the distance across the circle that the propeller would make when The VEEM Propeller Calculator is the only calculator in the market that can give you a size and price estimate on the spot for your vessel. For example, let’s look at a typical sail boat using the boating speed calculator we punch in LWL of 30, displacement of 21000 and play around with the speed till we get 25 HP.


Regards, David Boat prop pitch is the number of inches a propeller moves through the water in one revolution. 25 x 15 stainless steel 3-blade prop, very light use on my 16-ft Brig rib. Propeller Size Calculator for Displacement / Semi-displacement Hulls. We also make plastic propellers which are suitable for small outboards. Prop shaft spline counts shown for your reference. Think of a prop as screw. Sport Series.


Get a Mercury prop and gain a true competitive advantage. You will find an explanation of modular hub systems at the end of this article. dealers give me the run around with prop pitch 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 24" pitch prop would move 2 feet. g. The prop selector results were as follows for the Mercury Mirage Plus propeller: Johnson 150 - 19 inch pitch Yamaha 150 - 19 inch pitch Mercury EFI 150 - 17 inch pitch Mercury XR6 - 18 inch pitch. $452.


With over 1,000 blade variations of material, style, hubs, size and pitch, our propellers fit a wide range of boats from 2. Selecting the Right Prop. It did recommend a 6. Each of our boat props are constructed of high chromium stainless steel or strong, squeeze-cast aluminum. Mercury Vengeance 3 Blade Stainless Steel Propeller 14-1/2 x 17 Pitch Prop. 000947 which gives you your speed in miles per hour. (e.


Speaking to a trained professional is the best way to get the most out of your boat, engine, and propeller set up. The Mirage Plus 17 pitch propeller is a 15 1/2 inch diameter. Read BBLADES Terms and Conditions Here Boat Propeller Fit Guide. I don't have speedo or tach in the boat. You need to prop your boat so that it reaches the rated WOT RPM with your normal load. The diameter is two times the distance from the center of the hub to the tip of the blade. We currently have two prop size calculators (below), along with a collection of "conversion" style calculators to aid in determining various weights and measures relating to propeller selection.


According to Mercury the REV4 will run 200-300 rpms less, one to two inches of pitch, than a similar pitch Mirage Plus propeller, which is a large diameter three blade prop. For most boats, there is slippage and therefore the distance advanced is less than the design pitch. Advertisement Last summer, in part one of “The Right Propeller” I offered some guidance to Boats. The pitch is the theoretical distance the prop should move through the water in 1 revolution. If the blade had no angle of attack, there would be no slip; but, of course, there would be no positive and negative pressure created on the blades and, therefore, there would be no thrust. This poor performance can make it more difficult for skiers to get up. Since 1968, West Marine has grown to over 250 local stores, with knowledgeable Associates happy to assist.


Fiberglass Runabout/Ski Boat. diameter Diameter is considered to be the distance across an imaginary circle that is made when a propeller is rotated. Each of these decisions can impact the overall performance of your boat in the water, so please take the time to become informed, it’s important. This video is a great quick explanation of boat props to hopefully help you on your next prop purchase for your fishing boat. It's designed to be the perfect complement to any outboard or stern drive. Find great deals on eBay for mercury 4 blade propeller. What is Prop Pitch? Pitch is a measurement of how far the propeller moves forward during one full revolution.


You will then be able to filter based on diameter, pitch, material, # of blades, etc. Any unused / un-opened parts can be returned for a 15% restocking fee within 15 days of shipping from BBLADES. Sizing Propellers Those wanting to actually size a propeller for a boat (determine the best diameter and pitch) may find a free downloadable Propeller Calculator program from Castle Marine in the U. Shop with confidence. Solas 1554-140-21 Titan 4 Prop Mercruiser Mercury 14. No other prop on the market today provides as much performance, durability, and value as a Black Diamond aluminum propeller. For instance on KAD 42's with the 290 leg at a 1.


If a prop has a diameter of 12 inches and a pitch of 23 inches, for example, it's called a "12/23" prop. You can also give us a call at 425-353-0436 or email us at email us. The lower the pitch, the less top speed potential but more power for acceleration. Previous page: Sizing the Engine Propellers come in various shapes and sizes, as they have to match the engine power and RPMs, the boat displacement and the main type of usage expected (it takes a different propeller to pull a skier fast out of the water, than the one that should efficiently and economically push heavy load). Look for a number like 14¾ X 21. A lower pitched propeller will create more power due to more engine RPMs, but the boat will move slower. If you are having trouble figuring out which prop you should be running, Quicksilver provides a handy prop selector tool in the link below.


PropMD. The amount of slippage varies from boat to boat. Prop Calculators on the web. I have 2009 Pro Craft 210 Super Pro with a 2006 225 Mercury Pro XS Optimax with 10 inch jack plate , I bought it a year ago and when i got it it had a Tempest Plus three blade prop 26 pitch that was a little rough, I bought a new prop and when I took it to the lake it would only run about 5200 RP Average Pontoon Boat Speeds (With 15 Examples) The propeller is a Mercury Revolution 4 (48 – 857024A46 17P). Mercury Propeller Selector for Boat Motors Mercury WOT RPM Range Chart. Input a propeller pitch in inches and its RPM to see the theoretical maximum speed in miles per hour. A boat's propeller has two numbers that relate to its diameter and pitch.


Mercury also continues to offer one-piece, traditional props. WHAT YOU’LL NEED. That’s exactly what you will find with the Mercruiser Prop Finder! Piranha propellers are more durable than stainless steel, and more affordable than most composites. 5 horsepower and above), Alpha , Bravo One and Volvo-Penta SX stern drives Shop, read reviews, or ask questions about Mercury Marine Propellers at the official West Marine online store. They truly are the best option when it comes to your Mercruiser’s engine. If your boat falls short of the goal RPM, then decrease your pitch. 5 to 400 horsepower.


upgrading to better materiel Used 12. helpful. Customer Service. E. Another industry first, Mercury Propellers has developed a Prop Selector to assist consumers with narrowing down the propeller selection . second number is the pitch of the propeller. Recommended pitch is theroetical as it assumes no "slip".


revised 8-26-24 Boat Engine Brands » Mercury Models. 00 When it comes to propellers, “performance” is often assumed to be top speed. You are invited to join our public Boat Repair Forum to seek assistance from other members. mercuryracing. Select Desired Material. Mercury Vengeance 3 Blade Stainless Steel Propeller 13-1/8 x 16 Pitch Prop. The default initial station position and station increment are taken from a Prather pitch gauge.


Ideal Tip Speed varies depending on the H. One of the greatest joys of being a boating enthusiast is choosing boat props. 5 to 3. For land vehicles, the system dead ends at the tires, where the rubber truly meets the road. The Mercury 115 outboard is a motor that runs well with an aluminum or stainless steel propeller. The Mercury prop selector does not do comparisons. If you have questions, please call toll-free 800-369-4335 or submit an inquiry.


Pitch is the distance the propeller will move the boat after one revolution (not accounting for slip). The theoretical speed is figured by multiplying the pitch x engine rpm and dividing by (gear reduction x 12) = feet per minute. It does not account for pitch measurement imprecision or unloading in the air. Generally speaking, the diameter of a four-blade prop is smaller than that of a three-blade prop with the same pitch, says Jared Reichenberger, brand manager for Mercury Propellers. Luckily, determining if your propeller pitch is correct or not is a fairly simple procedure; we filmed this quick video, How to Find Out if You Have the Right Pitch Propeller, to show you how to Boat Prop Guide Whether you are buying a new propeller for your boat, simply in need of a replacement for a prop you damaged, trying to address a performance issue (e. K. com is the largest online Propeller Rapair and Sales shop! At the best prices! Propellers for the 115 HP ('78-Newer) Mercury MERCURY PROPELLER TYPE Propellers sorted by Pitch, then Diameter, then by Rotation (Right‑hand, Left‑hand) MERCURY PROPELLER SELECTOR Mercury makes a propeller to fit most any type of boating application.


Mercury Racing has announce the release of their new Propeller Slip Calculator App. Amazon. Unless, of course, you suspect your prop’s pitch may be wrong for your boat and motor, in which case you really need to understand what’s going on. The drive train is an important system on any engine-driven vehicle, car, truck or boat. A prop change is usually a big benefit for water sports. using the figures supplied above: MarineEngine. com readers with step-by-step instructions on how to evaluate prop performance.


Most props have this information inscribed on the hub, but use or wear can render the inscription unreadable. Search by Pitch/RPM Mercury Quicksilver For outboards 30 to 275 HP. 82. NOTE: Mercury and Turning Point both offer modular hubs and propellers. Does the age of the motor make a difference? It runs about 100 hours per year. Performance and durability are the characteristics of th The propellers suggested by our Prop Calculator are based on Honda’s extensive experience in prop selection. Surfbaud Freeware Propeller Calculator is an Excel spreadsheet program.


Boat props by outboard marine engine Propeller Depot is the ultimate source for replacing your outboard boat prop, you will find the best prices on all of the best aluminum and stainless boat propellers. • Prop installation, inspection and boat operation all need to be done in a safe and responsible manner. com. Nor does it account for propeller inefficiencies. You must choose the correct prop pitch settings so that your boat's motor runs efficiently. When in doubt, dealer assistance is suggested. Selection Guides, Calculators, & Tools.


Prop Pitch: 21-Pitch. Input your vessel information on the left and you will be given the optimal propeller diameter for a given engine and gear ratio selection for any vessel over 26 ft. You can change one parameter and recalculate the rest. 5 mph with a mere 7 percent slip! Half-inch pitch offerings enable engines to be dialed … Learn More Mercury's Flo-Torq propeller hub might just be the most important part you never see. Available in 6- to 23-pitch. Is there more than one propeller recommended?. .


The size of a propeller is defined with two sets of numbers, diameter and pitch, with pitch always following the diameter. The following is only a guide but you can also ask your marine dealer or boat manufacturer for advice on boat prop pitch. The same is true with a prop. The motor is new. thunderbolt stainless steel props 3-blade stainless steel propeller designed with larger blade area for higher output. Not only does it flex during shift changes, reducing noise and vibration. If the Mercury motors were more powerful, one would expect higher pitch propellers to be recommended, not lower pitch propellers.


Performance characteristics may vary due to the many kinds of boats, hull styles, loads and style of boating. (Over 15 inch, depending on pitch) The REV4 diameter for a 17 pitch propeller is 14 5/8 inches. In most cases this is different from the conventional airfoil datum. com: mercury outboard propellers. Prop Wizard - Turning Point Propellers, Inc. 7L Black Diamond, Diamond 4, Boat Prop Selector Guide. Mercury's Prop Selector Mercury's: prop selector is based off a complex formula to calculate the appropriate prop based on an aproximation of your hull's performance charecteristics.


Pitch is theoretical distance, in inches a propeller moves forward per one revolution. 5 pitch for my application however that I have on order. This is tiller operated and I use an inductive Tiny Tach and my GPS for RPM and Speed as stated before. com Your service manual will define a max recommended RPM for your craft and that is the number you may use to define how well your Mercury prop functions. being under or over propped) or you simply want to gain better fuel economy, we can help you find the perfect propeller for all of your boating needs. However, because boats vary widely due to a number of factors, it is not possible to guarantee which specific prop will perform best in any specific boating application. com does not offer troubleshooting assistance or repair advice by email or by telephone.


The app enhances the versatility of the tool – making prop testing much easier and a ton more accurate. Most propellers are identified by their diameter and pitch. 5L - 5. per square ft of the prop disc. Grouped by horsepower. We offer advice on how to decide between repairing or replacing a prop, as well as help with selecting the pitch, diameter and number of blades. Use accurate data.


Mercury Marine/Mercruiser Spitfire 4 Blade Prop 13. Using the "back" button on your browser, MarineEngine. The lower pitch makes the engine reach maximum rpm at slower speeds. What size replacement propeller is appropeiate for my 90 HP year 1999 Johnson outboard boat motor installed on a 22 ft pontoon boat. Present prop diameter; Present prop pitch; Right or left hand prop They are engine RPM, prop gear ratio (normally for 1. Skip to main content. However, this comes at a price: top speed.


Whether you are buying a new propeller for your boat, simply in need of a replacement for a prop you lost/damaged, trying to address a performance issue (e. Enter Current Pitch & RPM Data. Right-hand rotation; Fits most outboards (2. Solas Prop Lexor E3 Yamaha Stainless V6 21 | 3571-150-21. Mirage Plus, High Five, Trophy Sport, Vengeance, Laser II, Black Max, Bravo Two Mercury Marine is a Find your Ideal Quicksilver Propeller in 5 steps or less. 15" Pitch; Right Hand Rotation; 40-60 HP Bigfoot 4-strokes, 75-125 HP 2 and 4-stroke outboards; 10-13" Pitches are designed to provide superior holding and lift for pontoon boats! If engine RPM is appropriate with 3-blade prop, replace with the same pitch Spitfire propeller *According to Mercury Propeller Guide http://boatpropellers. The lower the pitch, the better your hole-shot.


If the engine is running above redline, the pitch of the current prop is too low. This number is your pitch. Press the calculate button to display the results. To determine how fast your propeller can theoretically push or pull you through the air at a given rpm and pitch, multiply your propeller's pitch in inches (usually measured at 75 percent of the prop disk radius) times the RPM. Determine your pitch using the mathematical formula (Tan a) * 2Pr, where a is the angle of your propeller, P is the mathematical number Pi, and r is the radius that you determined. Whether you're a proffesional angler or a weekend boater creating family memories, the propeller is the key to unlocking your boat's full potential. com - Choosing the right propeller pitch for your boat - iboats.


For very high pitch props (70"-80") the calculated Tip Speed has been adjusted 5%-6% to approximate true helix Tip Speed. This means that the propeller does not advance the full distance of the design pitch during each revolution. Prop Slip Hering Propellers is a high performance propeller manufacturer, recognized by racers and boat enthusiasts throughout the world. P. Use this calculator to figure out just about anything in regard to propeller, ratio, RPM and speed. Top speed will be what it is, you cannot increase the top speed by "over-propping". 82 $ 452.


Mercury Racing has released a new propeller-slip calculator app for Apple or Android smartphones. Note: If engine RPM is appropriate with a 3-blade prop, the Spitfire can be used to replace a propeller of the same pitch. If you have a different way of measuring a prop, adjust those parameters accordingly. Propeller Data. The lower the ratio, the more pulling power from a standstill. Then multiply that figure times . being under or over propped) or you simply want to gain better fuel economy, we can help you find the right propeller for your needs.


0" 21" Pitch 4 Blade LHAND. High Altitude will affect your performance Prop Talk Boat propellers are available in several materiel, pitch and diameter and the expert at Ace propeller can help you select the correct boat propeller that will work best at the altitude that you are boating at . When replacing the prop, consider replacing thrust washers, aft washers, and prop nuts. Think of a propeller as you would a car's axle ratio. Power Boats: Choosing the Propeller. Propeller Selection . The "angle of attack" is measured from the pitch gauge reference.


The first number is the diameter, the second is the pitch. Match my current propeller to what is available (OEM) If you have the current model number of your existing propeller, the prop guide will display all available propeller matches that we carry. Lowering the pitch or changing to a 4 blade propeller can improve hole shot. There are many other considerations besides those which we’ve discussed here that can come into play. The app has all the functionality of the calculator at mercuryracing. Many factors can reduce your RPM in many ways I. The pitch is the most significant number in the description.


The Propeller PITCH must be correct for your boat to get up to it’s full potential; no matter what size of engine or kind of boat. Current Pitch: Current RPM: 3. Tan is the tangent function, indicated as "TAN" on most scientific calculators. 2:1) The Pitch of the propeller, measured in inches. For most engines, this top range is about 500 to 1,000 rpm (typically 5,000 to 5,500 for 2-strokes, 5,000 to 6,000 for 4-strokes). Select from these Mercury models to find propeller style charts. Be sure to take a look at the Prop Slip page for an explanation of how to find your prop slip.


Available for both Apple or Android devices, the app provides all of the functionality of the calculator featured on their website at www. Optimize your boat's performance with a propeller from Michigan Wheel, Stiletto, Solas, Quicksilver, or Comprop. Use the CalcT button to figure the theoretical speed from the actual speed and slip. This is a "general" application guideline for determining the appropriate propeller size for your vessel. Gather basic information about your boat, outboard(s), current propeller, and performance goals. being under or over propped) or you may simply want to gain better fuel economy. Our selection of prop wrenches and prop tools make changing your propeller easier.


Ideal choice for heavier boats that run 150 - 250 hp outboards and sterndrives over 250hp. Propeller options on 15hp Mercury 2 stroke Discussion in 'Prop This is Mercury's prop calculator but I have never found it to be Plug in 10 pitch @ 4500 rpm Think of a prop as screw. Rubex RBX Hub System Cross Reference Charts. This is important in determining a suitable propeller pitch. Comparison Test: Boat Props On a constant-pitch prop, the pitch stays the same across the face of the blade, while on a progressive-pitch screw it starts low and increases across the face of Re: Mercury 115 Prop Pitch? What is the rated WOT RPM for your motor? 4300 to 4500 sound like it may be a little low, so you may have already had too much pitch with the 19" prop. 19 Pitch) First you calculate the theoretical speed of the boat by using the following formula, with your calculator: Pitch multiplied by RPM, divided by 1056, divided by Gear Ratio, = MPH e. We are constantly improving processes and striving even higher.


Picking the right propeller can be confusing. Instructions for use: Enter your data into the form. Select the Right Boat Propellers for Maximum Performance. Mercruiser Alpha I,II and Bravo I sterndrives. Customer Service hours are 8:00am-5:00pm ET, Mon-Fri. The results are only as good as the data you enter. Determining the Optimum Propeller for Your Boat .


Ray Brazier is considered an authority on rigging boats with 4 decades Your propeller is a vital link between your boat and the water. com, which makes propeller testing easier and much more accurate. The diameter is usually predetermined by the propeller engineers and is based on the size and series of the engine. Boat performance is equal parts power and propeller. iboats. 17‑21' (closed deck or bowrider, same hull) Model/Horsepower Aluminum Propeller Stainless Steel Propeller 2. It provides 25% faster acceleration and superior holding over comparable 3-blade aluminum props but at no cost to top speed.


If you're buying a new propeller for your boat, you may simply need a replacement for a prop you damaged, you may be trying to address a performance issue (e. The Mercury Racing Prop Slip Calculator (below) lets you quickly determine propeller slip. With our propeller finder, you’ll be able to narrow your search for the most ideal prop considerably in just four simple steps. If you are serious about purchasing a boat in next 30 days, fill out this form and we'll contact you with a value added offer on the model of your choice! Pitch Speed Calculator. Enter any 4 variables and the 5th variable will be calculated. We determine that it’ll go just over 6 knots with a 27 Pitch is defined as the theoretical forward movement of a propeller during one revolution –– assuming there is no “slippage” between the propeller blade and the water. Material: Show Results Search by Boat Length.


Solas and Rubex Brand Boat Props. Related products. Otherwise circular Tip Speed is shown. YAMAHA PROPELLER SELECTOR. 0), prop pitch (the distance that a propeller would move forward in one revolution), prop slip (the efficiency of the prop, lower at high speed, but perhaps very inefficient at low speed) and the boat speed in mph. 160 years of experience and expertise combined with proprietary technologies such as the X7® Alloy, Mercalloy®, the Flo-Torq SSR HD hub system, PVS® (performance vent system) plugs and the Flo-Torq® II hub system. In reality, performance also entails a variety of other attributes including hole shot, on-plane efficiency and fuel economy under a load.


A 24-inch pitch prop should move forward 24 inches with each 360 degree turn @ 100% efficiency. There the choice is simple: select the right tire for the roadway. If you have any questions, please get in touch with us. The original equipment option tends to give poor speed, acceleration and performance when used on heavier boats or when towing a skier. A light boat and load will pull a high numerical pitch prop, whereas a heavy boat and load would have to run a smaller numerical pitch to load the engine less and allow the engine to reach recommended full throttle rpm. We (Polson Enterprises) do not provide assistance in sizing Vicprop, marine propeller specialists. Bravo I LT Propeller From Mercury Racing $ 789.


Besides efficiency, for a given SHP, the larger the diameter of a propeller the slower the RPM’s required. 8x13 Propeller Pontoon 48-8M8026570. In order for you to choose the best type of prop for your boat, you must have a certain knowledge of boat propellers. If your prop hits an underwater object, it sacrifices itself to save your lower unit. If your RPM exceeds that goal number at full throttle, then increasing your pitch is the way to go. BBLADES propellers prices are subject to change. It can be downloaded for free from Google Play or Apple iTunes pitch, rake, and cup.


Round the result to the nearest whole number. 78:1 reduction a C4 will give roughly 35 knts or 39 mph at 3800 - 3900 rpm guide here pg 7 in this instance If I can make 3900rpm quite easily but am making 25knts what is the issue? The Gear Ratio between the engine and the prop shaft. LET’S Get Started. Here at E-NATION Magazine, the question we are asked most frequently is “What is the best prop for my boat?”Most of the time the person does not include any of the important information that is needed to even suggest a starting point for propeller selection. In addition, it is important to understand the effects of ventilation, cavitation, materials, and other applica-tion variables on propeller performance. Selling as I think it is a little over-propped with this pitch Save £lots by buying second hand these are not cheap w Up until 2006 Volvo Penta annual prop guides gave an estimated speed for a prop size and engine/ leg combination. , 19 inches) a propeller will move a boat with one revolution of the prop shaft.


But it is convenient for reality checks, or just messing around. Install using Mercury Flo-Torq II Hub Kit 835257K1. A higher pitched prop allows the boat to move faster by travelling a farther distance with each rotation. Diameter. mercury prop pitch calculator

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