TranSlate
31.05.2021 6:14:59
While there is no exact correlation between boat length and total weight, the following is a rough guideline:
here
See full version: The Best Outboard Motor for a Sailboat
While there is no exact correlation between boat length and total weight, the following is a rough guideline:
here
Factor in maintenance costs and fuel when looking at models. You want to run your engine at around 90% of its max RPMs to balance proper fuel usage and with wear and tear. Making a few calls to marine mechanics to inquire about an engine you’re interested in will give you a lot of information a sales person won’t be able to give you. The good news about outboard motors is that most of them are portable, which means you won’t have the added cost of either paying a mechanic to come to you, or having to get your boat to the yard, which usually requires help from a very good friend willing to spend all day driving and sailing back and forth.
Like any unique piece of equipment in the world of sailing, outboard motors come in a variety of sizes with features and options to fit any owner’s needs. But of course, one size doesn’t fit all. Every boat is different – even those that come off the production line at the same time – and every owner is looking for something specific when it comes to their sailboat. From the purpose of owning the boat (blue water sailing vs. racing) to the location and impact on maintenance (cold weather vs. tropical weather), an outboard motor is just one of the many elements that will define a sailboat’s function and performance.
Shaft length is an important design element and should be considered when purchasing a motor. A shaft that is too short will obviously prevent the propeller from being submerged in water, while a shaft that is too long will extend the propellers too far. Not only will it decrease the efficiency of your engine, it will create unnecessary drag. Know your transom length when looking at different models.
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A larger boat doesn’t necessarily mean a larger motor. Although there are different ratings for different classes of boats, a small power plant can be more effective than a larger one. Conversely, an outboard motor can easily overpower a small boat and create unsafe conditions at high speeds. Guidelines and requirements differ between motorboats and sailboats. And while there is some overlap, these considerations apply directly to sailboats.
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According to Tim Reid, Mercury vice president for product development and engineering, Mercury has made more than 400 incremental changes to this outboard platform since the Verado 350 and Racing 400R were introduced in 2015. more
The Mercury Verado 400 fills a gap in the Mercury outboard line between the Verado 350 and the Mercury Racing 400R outboards.
These Verado models are the lightest outboards in this category by a long shot. With a 25-inch shaft, the Verado models weigh 683 pounds, compared to 727 pounds for the 4.4-liter V6 Suzuki DF350 and 952 pounds for the 5.6-liter V8 Yamaha XTO. That’s a weight advantage for Mercury that really stacks up on multi-engine boats. here
The Mercury Verado 400 is equipped with the stout HD 5.44-inch diameter gearcase. [links]
In the past, a few companies would sometimes modify certain gas outboards to use propane. However, the modifications were expensive. Then came the U.S. company Lehr, which introduced a range of propane-powered outboards that now includes five models offering 2.5, 5, 9.9, 15 and 25hp. Following in Lehr’s wake, Tohatsu/Mercury has also brought out a new 5hp propane outboard. [links]
Two of the most indispensable items on board a cruising yacht are a dinghy and an outboard motor. At anchor or on a buoy, of course, they are your only means of getting ashore. They also have a thousand other uses. For example, they can allow you to motor across to friends’ boats, collect supplies, clean the hull, feed out a long line ashore or set a kedge anchor, just to name a few.
More recently, one of the biggest changes to outboards has been the move from two-stroke to four-stroke engines, in the interest of reducing exhaust emissions. Despite the extra weight, a four-stroke offers certain other benefits as well. They’re quieter, for example, less thirsty, tick over more smoothly and you don’t need to mix up large quantities of oil and gas. That said, they also require laying down carefully to stop oil seepage, have more components to fail and are more complicated and expensive to service. [links]
There is a large selection of portable outboards available, but first, you need to decide which type would best suit your purposes.
Clearly, the maximum size of outboard you can go with will depend primarily on the size and type of tender you choose. Many 35-45ft bluewater cruisers will have a 9-10ft inflatable or RIB for general-purpose tender use. However, the specific make and model you buy can also depend on the size of yacht you have and your means of stowing it onboard.
For decades now, gas-powered outboard engines have been the best way to propel a small tender. They’re fairly straightforward to use and maintain, even when you’re at sea or anchored in some far-flung destination. [links]