Introduction to electric boats Displacement in dates Christmas I always make a stop in the yard, because my home change. As I have not received some material, I'm not going to sail on this location. So I'm willing to translate the information in the catalog of "John B. Marine" placing on the forum
Miliamperios.com. I must say that some paragraphs have been removed, considering that advertise in a trade that I know and some terms have been replaced by others that I think best expressed in maritime jargon, what the author wants to express. I would also like to thank "the pirate of the steppe" his collaboration in the forum, for their invaluable help in translating, proofreading and understanding of this text.
For some people, fast boats that power is a contradiction. Nothing contained batteries could possibly be faster. Can you be?
Well then the answer is a resounding YES. With continued technological advances of the elements [battery], mainly by Sanyo, manufacturers are offering better items with continuing increases in capacity and higher discharge values \u200b\u200bwithout increasing sizes [measures].
motors, speed controllers and components (drives) (All of these things) are improving. But what about those funny boxes edged in which you ride this?. Helmets. Yes, the sad reality is that most of the helmets used today [I would say that is sold in model shops] are simply inefficient to make the best use of the limited amount of power available to the pilot. Some are heavy, cumbersome designs of integrated circuits adapted for electric propulsion. Others are mass-produced toys with very poor design of propulsion systems, manufacturers are concerned they only sell as many boxes as possible bright.
If you're reading this, there is a possibility you were the owner of a kit manufactured in bulk and you were very disappointed by his performance or lack thereof. Do not despair, you can increase the performance of many commercial kits available replacing the motor and the government team ...
Most model shops only know planes and cars ...
Note: I have a clarification from the fans who have not purchased a boat. Buying a boat mass produced, cheap plastic. With its own electronics, which is not compatible with as used in radio. To empty it and then left alone with the helmet. It is not profitable. Sure you're willing to pay a few euros more for a helmet with epoxy (or at least polyester) and glass fiber designed for high speed, with a much higher structural strength than a plastic helmet.
Types of Boats
There are several different types of helmets used in electric speedboats, these being: Monohull, multihull and Hydrofoil. Each makes high-speed gliding on the water surface, the attainable speed is proportional to the amount of hull in contact with water. Each has its own unique characteristics which are augmented by the power level and speed.
Boat "V" open and closed
The open V monohull are fast and can turn upright and very quickly, but can not be controlled in very lively waters. The closed V monohull much deadrise (the angle of the bottom of the hull to the horizontal) can be handled very lively waters. They are also fast, but it costs them more in the closed tacks may intervene even if it turns too tight. ......
There
designs that combine both types of forms being stable in rough waters and good maneuverability when turning.
The type of propulsion system used affects the maneuverability of the boat. The propeller system submerged in open boats in V provides a quick tack. Surface propellers need a little more room to turn.
Multihulls-Catamarans and tunnel hulls.
Essentially a tunnel hull are two halves of a closed V hull by a bridge. This provides two significant advantages on monohulls, namely increasing the manga which improves stability, and the fact that the air flow through the tunnel used to create an aerodynamic lift that raises the hull of the water, reducing the wetted surface and therefore the load. The fastest tunnel hulls have no or a very small deadrise between floats. This is good if you only sail in calm waters, as determined deadrise maneuverability in rough waters. Deadrise The more you have, the more water can be moved to maneuver, but the boat will be slower in calm waters, so we must adopt a commitment to get the best of both worlds.
tunnel hulls are usually able to turn very tight, the problem exists in these boats deadrise very small which in turn can not stop once they start.
Hydrofoil.
The faster boats, hydrofoils planning to acquire their high speed in three small points of contact with water, usually aft of the shoes and lower blade of the propeller. The "Bluebird" Donal Campbell's is probably the most famous seaplane ever planned, planned in about 42 inches square (271 square cm) surface wet to achieve a speed of 300 mph. (483 km / h).
The hydrofoil of the Modern American Unlimited are equipped with gas turbines of 2650 HP Chinook helicopter (2686.57 CV) and the race usually exceeds 200 mph (322 km / h).
The scale hydroplanes, like their counterparts in real size, use the aerodynamic lift generated by the runners for lifting the hull of the water. Most models of hydrofoils, and the scale of outrigger designs usually have little or no deadrise in the skates glide and therefore are very fast but very difficult to turn. Even when one fin attached ("end turn") in the shoe slightly to starboard aft center of gravity, the hydrofoils only relatively mild veer to starboard. No problem for a pilot in an oval circuit is running in the direction of clockwise, but must be taken into account by those who want to run with them for fun (free shipping), especially if the lake is not too large .
power and speed.
The running time of a power boat is determined by the capacity in milliamp hours of the elements used and the power consumption of the combination motor and propeller. For example a 1700 mAh battery delivering 10 amps to the motor should last 10 minutes (1.7 Ah x 60 min = 102 Amp minute, divided by 10 Amp = 10.2 minutes or 10 minutes 12 seconds)
However things are not so simple, the actual capacity of the elements decreases as we increase the intensity of electric current. Propeller size and shape, the hull, engine type affect battery life and performance.
The running time ranging from 3.5 minutes for a 12-element hydrofoil sailing at 35 mph (56.3 km / h) to more than 5 minutes for a 6-element Sloopy sailing at 20 mph (32 km / h).
The running time can be extended at the expense of losing speed, and it follows that the speed can be increased at the expense of running time.
Our techker, Juan Pablo Clop said, "these cars are yours, do what they want ..." and very excited to be so close we listened. Three cars got on the team, the feel and posed for the picture, for example, Polo-G was tested Clopatofsky Gonzalo helmet. 
As always at the Autodromo are beauties of all ages and styles, how are you ... 
And as the biggest race of Colombia, because the show was worthy of the "title", pouring rain and emotions all the time accompanied the pilots and the platform to Despite multiple neutralization. A tough race, where Clop Racing showed why we are the best bar. 
finished the race, the bar and rested his improvised percussion. Don Jose gave us a few minutes to greet us and manage our radio controlled, fireworks, did not win the bike ... But we share with our idols, plus we get another trophy, courtesy of John Clop. 
