MEASURING MOTOR SHAFT LENGTH. A new manual start short shaft Merc/Tohatsu/Nissan weighs 157. In none of these cases is the shaft length exactly 15, 20, or 25 inches. For New and Used Outboards For Sale Please Vist our Main Site.
Short Shaft Vs Long Shaft Outboard Transom Measurement
Boat name: White Ice. Not only is it important for new dinghy owners, but also current owners that are looking to upgrade. Look's like no formal introduction is required. Sailboats use these sometimes, as well as some boaters who want to install a much smaller auxiliary motor to use in case of primary engine failure. Using a long outboard shaft on the wrong boat type can make it much harder to steer, especially if the engine doesn't have enough horsepower. It to lose it's "bite" on the water and causing the engine to "rev-up". Shoot me a PM if you have a question. Inflatable Boats: Motor Shaft Length For Inflatable Boats –. Depending on your skills and the construction of the boat this can be an easy evening project. A little research will provide. Once you know what will fit on your hull, you can fine-tune your choice based on the performance you're looking for and how you use the boat. Remember, if you use a longer outboard shaft than you need you will be increasing your draft.
This is a quick and easy measurement that anyone can do with a ruler. Secured their "prime mover. It depends on the boat. If this is the case, problem solved. Short shaft vs long shaft outboard motors. To be mounted on a boat transom measuring 15 inches in height. If you own an inflatable boat or are looking to purchase one, getting an outboard motor or trolling motor for your boat has crossed your mind. Short shaft–15 inches. Depending on the architecture of your boat, you will need more or less shaft length so that the propeller is submerged to the right depth. Sorry for rekindling the old topic - canoe forums are scattered all around.
Short Shaft Vs Long Shaft Outboard Motors
Your boat's engine capacity, size, type, and transom length will affect its ideal shaft length. The water tubes that conduct cooling water from the water pump. This dimension will be about 16 or. Problems with getting the ventilation plate too low include slower hole-shot and lower top-end speeds. I think I know what I am looking for now, thank-you! Should you choose a short or long shaft boat motor. Sponsored by Life Proof Boats. Location: Braunston. This length may vary by an inch or two, but round to the nearest even number to get the motor's rated shaft length. In this article, I'll guide you on determining what shaft length is ideal for your boat, how to measure transom height, and what else to consider when getting an outboard motor. A shaft length that falls closest to 15 inches is short, closest to 20 inches is long, and so on.
My last attachment cut off some of the question and answers in the Faq's section. So something size will for sure need to be bolted onto the transom. If the measurement is 20-22", you will need to consider a "long" shaft motor. Long shaft vs short shaft. Don't forget to ensure turning clearance for your main engine when the auxillary is in both up and down position. To do this, just check if the anti-cavitation plate is aligned with the lowest point of the transom. Examples of shaft lengths: 1984 Johnson 15 hp.
Short Shaft Vs Long Shaft Outboard
If your engine is mounted on a boat or a stand, locate the transom bracket of your engine and use the guide below to measure. Some may call it a "standard" length while others may call it a short or a long shaft. For a dinghy, I can't see any advantage to a longer shaft, for a cruiser - sail or motor, a long shaft puts the prop lower, so it's less prone to being lifted out of the water in rough weather. Again the yardstick or ruler will come in handy; one merely measures the height of the transom at the motor. These percentages are my guesses, based on looking at. Short shaft vs long shaft outboard transom measurement. Containing large numbers of sailboats, for example, will offer more 20 inch. Choosing a boat engine is not easy.
They're also useful if the back of your boat has a non-standard measurement. The transom is the reinforced position at the stern of the boat onto which the outboard motor is installed. You can use a longer shaft than recommended and your boat will work fine. Boat Make: Mercury Ocean Runner 420. Took it out for a test ride and there is lots of drag, ever water goes up against the outboard and into the boat, when full throttle. A few I saw suggested slightly above the transom's bottom, most were about even with it and some were slightly below it. Long shaft is considered 20". I did fit a Stingray Hydrofoil to eliminate bow rise and porpoising whilst the nipper was aboard, i found it transformed the already great handling into something completely different. I guess it depends on your view of how many it takes to constitute a bunch. Short shaft vs long shaft outboard. Knowing how to correctly measure motor shaft length and how to measure the correct length for your inflatable boat is extremely useful information. We had a 4hp Suzuki on our Trimaran and it was quite dependable.
If the balance is changed, the flow pattern over the propellor blades is disturbed (called cavitation), which causes an immediate loss of thrust, and over time this can cause pitting damage to the back of the blade. Johnson / Evinrudes (OMC) are the easiest to convert shaft length. Join Date: Jul 2003. This is measured by ensuring that the propellors radius (the distance from the propeller hub to the outer blade edge) falls below the boat's hull. But, how do you measure it? For boats equipped with a bracket, calculate the same measurement but based on the bracket and not the transom. While the boat slows down).
Boat name: Narcissus.