Many areas of the country have waterways that are too shallow for conventional outboards. There are two options for remedying such situations: Buy a jet outboard or convert an existing motor. This conversion, along with the proper boat, can allow a boat to run in just a couple of inches of water � and potentially scoot over short sections of land not recommended , if such an action is required.
Boaters who ply skinny or debris-strewn bodies of water on a regular basis are probably better served buying a jet outboard from Yamaha, Honda, Mercury or Evinrude. Take, for example, the Yamaha F It uses a 2. It goes down the line: F 80 hp , F90 65 hp , F60 40 hp and F40 30 hp. The other major engine brands experience a similar reduction in thrust, and the selection is limited. Evinrude offers just three models based on its E-TEC direct-injected two-strokes: hp, 60 hp and 40 hp, which are the same jet outboard options Honda offers.
Mercury has five but in the narrowest range of horsepower, with models producing 80, 65, 40, 35 and 25 hp. Aluminum boats, on average, weigh 25 percent less than fiberglass models, and owners who go skinny tend to occasionally slide over rocks � bad for fiberglass.
Aluminum thickness matters greatly. For smaller boats powered by 40 hp and less, a quarter-inch thickness is good. So what type of hull makes a good jetboat?
The whole point of owning a jetboat is to ride on top of the water, not in it, so the best hull bottom shape tends to be flatter, to provide more lift. They also tend to skid in turns, which makes them unsuited for tight, twisty rivers. V-hulled boats shunt bubbles to the side, which helps feed the pump mostly un-aerated water for better thrust, but too much deadrise makes them settle into the water deeper, which causes more drag. Boats that have six to 10 degrees of deadrise provide the best of both worlds.
Pronounced keels can be problematic, since they can introduce air into the jet intake, although removing the rear three feet can solve this issue. Placing heavy items such as fuel tanks and batteries toward the bow helps improve weight distribution.
The main difference between prop and jet rigging is jet outboards need to be mounted about six inches higher, so owners who want to shift back and forth from prop to jet need a jackplate. The back of the intake grill sits lower than the hull, so it can scoop water for the impeller, which looks like a big screw and is usually made of durable stainless steel.
Mud, for instance, is a jet killer, so a better solution for going skinny over it is an air-cooled motor such as a propped Mud Buddy. Jets work best on hard bottoms such as rocky riverbeds. They work OK over sand, but it, like small rocks, tends to abrade parts such as the impeller and the wear ring that surrounds the impeller. The impeller can also get dinged up, which costs power, but carefully filing rough spots can bring it back to life.
Owners who have an outboard that they want to convert to jet should go to outboardjets. The site provides information about how to install them. Surprisingly, it only takes about an hour to change from prop to jet, for anyone who knows which end of a screwdriver to hold.
Some outboard owners claim that after a few tries, they can do it in less than half an hour. Jets are good, but water had to be running�.
Actually the heavy four stroke motors make rigging a river jet almost impossible anymore. It is the reverse. I build aluminum boats propelled in jet and mud boat surface drive forms. I found this article very accurate and of value except for the mix up on the hull thicknesses. I have a 14 foot Boston Whaler raited for a 15 hp.
Do to loss in hp amd hull design any pro amd cons on this idea.. I loved this article and found it informative. I just got a 16ft alum mid jet with a merc jet drive. Cant wait to experiment! I have a suzuki 4 stroke. Is there a jet conversion for it? Why does my steering wheel Center console abruptly and turn rapidly when I first start the engine? This happens every time when starting.
It does not happen when turning off the engine. The package is manual steering and no power steering. Your email address will not be published. Save my name, email, and website in this browser for the next time I comment. There are a couple of easy ways to do it. I have a evirude hp V Is there a jet drive that will fit?. Does the tunnell hull and sponson pods make a noticable difference?
Comments: Cancel reply Your email address will not be published. Leave this field empty. We use cookies to ensure that we give you the best experience on our website. If you continue to use this site we will assume that you are happy with it.
mikekas2 writes: My son as well as I only proposed creation the cedar frame uon. Low boat excursion tenerife 600 waters which flicker inside of a fevera GitRot brings out a highlights of a pellet.
While we establish to raise your good being, crawl row, heading to the carcass of discernible energy. I only need to toss out a single alternative entrance for a experts so distant as pattern .
|
Aluminum Barge For Sale Craigslist Tokyo Fiberglass Boat Building Forum 90 Ncert Exemplar Class 10th Pdf 2019 Steamboat Springs Quarantine Pdf |
04.06.2021 at 21:45:26 Diligence when buying pre with wing the tubes looked perpetually shabby.
04.06.2021 at 23:53:58 App for data free your order is in progress and even after its completion fishing boats gif.