[aisnake]

In the mid to late '60s the Boating Industry of America (BIA), the forerunner of the NMMA, set the standards and procedures for outboard horsepower ratings that each manufacturer abided by. Representatives of each company would visit and oversee the test results of 3 production powerheads. This was powerhead horsepower only and the motors were run on 20:1 mix, not 50:1.<br /><br />Forktail is pretty close on the gearcase loss figures. Actually, if I remember correctly, it was only a few percentage points more, allowing for the oil viscosity, but not near 10% on large outboards. On the small motors, the percentage of loss was higher. more

[mcculley]

Re: Old vs New Horsepower Rating here

[freetx]

Re: Old vs New Horsepower Rating

[campsers123]

so the new HP ratings are acually more HP then the old 1ns ? and all this time i thought i had a 9.5 haha

[BitcoinCyberStore.com]

Mercury Marine has four-stroke and DFI two-stroke low emissions outboards available. The long running Optimax DFI two-stroke range has been refined in recent years with models now available only between 150-250hp. [links]

[Siegmund]

EVINRUDE'S E-TEC OFFERINGS
Evinrude E-TEC: Bombardier Recreational Products (or BRP) is the manufacture of the Evinrude E-TEC range of direct fuel injected two-stroke outboards.

[mustvisit]

You can read about the new V6 Mercury outboards in this article titled New 2018 Mercury V6 175hp, 200hp and 225hp FourStrokes dare to be different. more

[ArtemZ]

LPG, DIESEL AND ELECTRIC
There are also expanding ranges of LPG outboard engines from the likes of Tohatsu and LEHR, as well as diesel outboard from OXE like this 300hp offering launched locally, and this Neander 50hp Dtorque 111 turbo-diesel outboard now available on the local scene through Power Equipment. here

[thurmandrond9]

The new V6 Mercury outboards are making a bold statement about style and function. more

[ritobanc]

The 300hp OXE diesel is destined for commercial use and military application where petrol isn't carried aboard. here

[ysilk]

What is the fastest outboard motor? Brands like Evinrude, Mercury, Seven Marine and Yamaha have been competing to make the fastest commercial outboard motor for years. However, maximum speed is a function of both your total horsepower and the weight and shape of your boat. Many boats have multiple outboard motors for increased performance.

[plusjeans]

Chat with a ConsumerAffairs decision guide more

[yrrryyoderj]

Yamaha Outboards has been selling outboard motors for over 30 years. In addition to outboard motors, they sell propellers, gauges, controls and accessories online and in dealers across the U.S.

[citizen]

Chat with a ConsumerAffairs decision guide

[genepoolet]

The German company Torqeedo manufactures and sells electric engines for boats of all sizes, from kayaks and canoes to ferries. The company is committed to sustainability, and their engines do not pollute the environment. more

[ByteCoin]

You’ll likely need to buy some additional tools and accessories to complement your new outboard motor. These are generally available from the same company that manufactures your outboard motor and can be purchased online or at dealers. [links]

[marycaouette]

So why does the power-rating mandate end at 20 feet in length?

[icaro]

“We have had many discussions with the Coast Guard on that subject,” says Chad Keskitalo, compliance specialist for Lund and Crestliner boats, “and the Coast Guard won’t budge.” more

[binarysecurity]

90hp is max for this tiller-driven boat.

[ellyka118]

For tiller-steer boats with a flat bottom, like a jon boat: (W x L x 0.5) – 15 = max. horsepower

[ashley01]

Po Chang, a civilian boating safety engineer for the Coast Guard, explains that the agency has three concerns when considering max power for tiller- versus remote-steered boats. The first is operator placement. more

[rickyfoley32]

Finally, there’s the difference in reaction to helm input between the two systems. [links]