Originally posted by DonHof View Post 14.75 x 7.1 x 2 - 90 ? It would be nice to someday repower based on a "deal" between 200 and say 250 instead of just specifically a 200hp. From my own personal experience with pontoon boats, I find that the older pontoons would typically have 25-50 hp engines, and occasionally a 75hp on them. Get community news, buying bargains, and how-to guides at your fingertips. Damit Verizon Media und unsere Partner Ihre personenbezogenen Daten verarbeiten können, wählen Sie bitte 'Ich stimme zu.' (except sailboats, canoes, kayaks, and inflatable boats) depending upon the size and geometry of the boat. Boats measuring less than 16 feet. They decided that one metric horsepower would be defined as 4,500 kilogram-metres/minute. If the boat is rated for a 10, do not put any bigger motor on it. Take the watts you calculated and divide it by 746 Watts (1 HP). horsepower. A closed cooling system resists corrosion. They are available with horsepower ratings of 527, 577 and 627. Horsepower is . But it’s also a safe wager that to you that rating is just a number that’s meaningless unless you can compare it to another engine’s rating. 5 hp - 8 hp (From around 40lbs- 60lbs) These are your workhorse mid-range portable light-weight outboard motors. aus oder wählen Sie 'Einstellungen verwalten', um weitere Informationen zu erhalten und eine Auswahl zu treffen. Yes, the range is wide, but that’s because boats have a variety of different designs and handle differently. Be aware of the federal regulations for your boat’s engine power (horsepower) and gross load capacity (maximum weight). To read more about this topic, check out our thrust vs. horsepower comparison guide. I purchased a 1992 Roughneck metal boat 19' center console that I am going to modify. With that kind of horsepower… This regulation remains in effect today, and though the weight tables have been modified to meet the evolving weights of newer engines, it is a critical safety component to ensure that you a riding a boat that is properly powered for it\’s intended purpose. On August 1, 1973, the US Coast Guard placed into law, a regulation that limited the power and weight of outboard engines on all boats up to 20ft. Anybody ever run into this. Wir und unsere Partner nutzen Cookies und ähnliche Technik, um Daten auf Ihrem Gerät zu speichern und/oder darauf zuzugreifen, für folgende Zwecke: um personalisierte Werbung und Inhalte zu zeigen, zur Messung von Anzeigen und Inhalten, um mehr über die Zielgruppe zu erfahren sowie für die Entwicklung von Produkten. If the boat is less than 20 feet long, the power rating is determined by a formula. In earlier model years, the max HP was higher. All rights reserved. Every boat has a maximum number of people it can carry, a maximum load of equipment it can carry and a maximum horsepower rating. At that time, outboard engines were becoming larger and more powerful. For any outboard-powered boat over 20 feet in length, the maximum horsepower rating is essentially at the discretion of the boat builder. Boats measuring more than 16 feet but less than 26 feet. rating, and anything happens, no matter what, you will be at fault. In retrospect, I find that the newer 28 ft pontoon boats seem to be coming with 90-115-150 hp engines on the back. RIBs take more horsepower because they are far heavier than inflatable boats. No remote steering or less than 20" transom Height The horsepower rating is based on the boat's "hull design speed." Dazu gehört der Widerspruch gegen die Verarbeitung Ihrer Daten durch Partner für deren berechtigte Interessen. Re: What determines the MAX HP rating for a boat? The coast guard tag has a max weight capacity, but not HP. It’s a pretty good bet that if you’re reading this column, you know a fair amount about the engine(s) in your boat, including the horsepower rating. For remote-steering boats, the formula is: (stern width in decimal feet x length in decimal feet x 2) – 90 = max. Note that personal watercraft do not have a capacity plate. I have someone interested in buying the boat but am worried about liability. All boats are weight-sensitive, and RIBs are … Class 1. I was told that due to accidents caused by side-slipping (flat bottom boat), the rating was dropped for the 2005 model year. 15 . Wrong on all counts. These engines will push a boat faster than trolling motors will. The boat weighs approximately 72 pounds with an empty fuel tank and without any gear or passengers. 301 33. Expect today’s best 200-hp outboard motors to have some weight, especially 4-stroke models. Then, unless the boat is a purpose-built raceboat, the suggested max hp rating also had to pass American Boat and Yacht Council (ABYC) handling standards. 5 . Sie können Ihre Einstellungen jederzeit ändern. Any boat larger than 20 ft is not required to be rated for hp so the manufacturer can really put whatever they want on it. Does anyone know what the max HP rating is for this boat? Class 2. Für nähere Informationen zur Nutzung Ihrer Daten lesen Sie bitte unsere Datenschutzerklärung und Cookie-Richtlinie. The max HP rating with remote steering is 30 HP. 7.5 . 10 . Im kinda thinking that max hp is 115-120hp but I want to be sure. The plate is there but the print is mostly gone and cant read that part. They feature a deep 2.33:1 gear ratio and a larger gear case — the same size as that on a 115 outboard. For P-W-C’s, always follow the recommended capacity in the owner’s manual and on the manufacturer’s warning decal. But would he have needed triple 250 HP boat motors, or could he have had a similar performing boat (without as much out of pocket money or things to break down in the future) with one nice 300HP outboard engine? 3 . (624 watts / 746 watts = .83 HP) So, our NV 55lb draws 624 watts at full speed, divided by 746 watts, gives us .83. So there is a practical limit based on safe boat handling. the only thing original on the boat is the pontoons, every thing else has been upgraded and replaced. Right, the boat in question has the cap/hp rating clearly visible. (except sailboats, canoes, kayaks, and inflatable boats) depending upon the size and geometry of the boat. If you plan on going to a larger than stated maximum horsepower you will be doing so at your own risk and should proceed with caution. © 2020 National Marine Manufacturers Association. It seems obvious that the maximum horsepower rating is to keep us from speeding out of control with an oversized engine and, since these ratings are mandated by the U.S. Coast Guard, it's a logical assumption that these capacities are the result of their testing. Usually, the weight of the engine and how much the owner can lug will be the determining factor on max horsepower, usually, 9.9 to 25-hp for small inflatables. All boats are required to have a maximum HP rating and this can usually be found on a plaque located on the vessel. Yahoo ist Teil von Verizon Media. Wheelman. The maximum horsepower we have listed for this outboard boat is 7.5 hp . The V-8 has a bore and stroke of 4.065 by 3.622 inches and a compression ratio of 8.6-to-1. I have a 2002 Tracker PT175. Dealers sold them with 40 and 50 HP outboards. ... but bigger numbers on the cowel will win out over a long dissertation about torque and horsepower ratings when trying to sell a boat . rating does anyone know how to get a max HP rating for a project boat? Boats more than 20' in length are not required to have a rating either, though Whaler chooses to give all their boats a maximum rating. If the Factor is over 52.5 and the boat has : Remote Steering and at least 20" Transom Height. As Kicker outboards we have had these engines move a 14ft fiberglass boat weighing about 600lbs at a nice trolling speed. On August 1, 1973, the US Coast Guard placed into law, a regulation that limited the power and weight of outboard engines on all boats up to 20ft. Needless to say, he could have used A LOT more horsepower on that boat. A maximum horsepower rating is only required on outboard powered monohull boats less than 20' in length. Max Hp rating Max Hp rating. It does not have a horsepower rating on it anywhere I can find. Registered Member. The USCG wanted to ensure that manufacturers were not placing an engine(s) that was too large, or too powerful on a boat that may not float or maneuver correctly with an improperly selected engine. Instead of 200hp rating, maybe it should just say V6 outboard. The hp rating is a coast gaurd equation based off of measurements of the boat and has nothing to do with any testing of the boats safety with different size engines. Class A. Boats that are under the 20ft mark do have maximum recomendations set by the CG just not boats over 20, the manufacture sets the recomandations it that case. Inboard/outboards and inboards are not required to have any rating at all. Seven Marine outboards have a powerhead that’s derived from a General Motors supercharged aluminum-block V-8. The capacity plate is where you can you find the maximum horsepower for your boat. Why does my boat have a Maximum HP? The boat would have to be able to maneuver through courses at wide open throttle (WOT). I have a 2005 Carolina Skiff J-16. Finally, the Capacity Plate will also indicate the maximum engine power for your boat, given in horsepower. For example a diesel engine that produces 300 Hp at 3600 rpm and makes 500 Lb-Ft torque at approximately 1600 rpm will work out much better than the example above of the 300 Hp engine making it’s power at only 2000 rpm. Mercury Bigfoot outboards come in 40 hp and 60 hp ratings. On the tag inside the boat it says the max horsepower rating is 75 horsepower. the boat never had a label on it but it came with a 70hp, now it has a 115hp. The taller gear case can help ensure the prop is kept in the water and also allows installation … Note: For flat bottom hard chine boats, with a factor of 52 or less reduce HP one capacity increment . Bout all I can make out is 16 passengers. A manufacturer tests a set number of engines of the same design and then the average max hp achieved (+/- 1% by current standards) is used as the HP rating for all engines of that type built. If repowering you will want to verify the max horsepower for safety and to make sure your insurance company will insure your boat. 119.45 So I can put a 120hp motor on a 14 foot boat? I have noticed several similarly built boats like the Express that jhef has posted a pic of and others that have up to 150 horsepower motors on them. For example, a 5,000-pound boat could have an engine with between 125 and 200 horsepower. Do I/O boats typically not have a rating because of … Thanks! D A 1,000hp (SAE) rating would thus be equivalent to a rating of 1,014 metric horsepower (mhp) for the same engine. For example, the Yamaha F200 and F225 four-strokes weighed more than 600 pounds. Daten über Ihr Gerät und Ihre Internetverbindung, darunter Ihre IP-Adresse, Such- und Browsingaktivität bei Ihrer Nutzung der Websites und Apps von Verizon Media. Dies geschieht in Ihren Datenschutzeinstellungen. It has a 90 Yamaha on it now and I may increase to larger after modifications are made and need to see what I need to do specifically to qualify for larger H.P. The boat would probably be fine, but depending on where your at, could get you a big fat ticket, and regardless of where your at, if you have a motor larger than the max. Let’s review the four different classes of recreational boats as determined by length. HP = (2 x Factor) -90 . Therefore, the estimated output of our NV 55lb is .83 horsepower. A 200 horsepower two-stroke engine of that era might have weighed 425 pounds. And indeed that’s true—up to a point. That converts to 32,549 foot-pounds/minute, meaning an SAE horsepower is slightly more powerful, by 1.4%, than a metric horsepower. Class 3. Wheelman. For most mid-size boats (up to 40 feet) the best option is a higher revving diesel engine that generates torque at lower rpm. I've been thinking about repowering my boat. I have a 1988 24' Harris Flotebote. According to federal law, motorized boats that are less than 20 feet in length must have a capacity plate in the steering or helm area. thanks Boats measuring more than 26 feet but less than 40 feet.