- #How to build hydroplane boats rc driver
- #How to build hydroplane boats rc full
- #How to build hydroplane boats rc windows
Excessive saltwater ingestion will almost instantly reduce engine output due to the buildup of salt residue on the turbine blades. During saltwater races, an additional extension to the cowling may be used to prevent saltwater from being ingested into the engine. The rear of the cowling is vented to allow for excess air to pass through so as not to trap air that would otherwise slow the boat down.
#How to build hydroplane boats rc driver
The large “cowling” behind the driver cockpit functions as an aerodynamic device and as a “scoop” to funnel intake air to the engine. The driver will also manipulate the canard in the turns or when rough water and windy conditions persist. The canard allows the driver to more easily “fly” the boat, pushing the rear of the canard down to create lift and raise the nose of the boat, or raising it to lower the nose of the boat if it gets too high and is in danger of “blowing over”. Unlike the rear wing, this “canard” is actually controlled during racing by the driver via foot pedals. The second wing on the boat is located at the front of the “pickle fork” nose. This wing is only used for stabilizing and trimming the boat so that very little of the boat’s rear running surfaces touch the water. There is a fixed wing on the rear of the boat that can only be adjusted when in the pit area. The short shaft has the propeller connected to the end and it allows the prop to be easily removed after every heat for inspection. A “long shaft” transfers the gearbox output through the bottom of the boat to the “strut” where the “short shaft” connects to it with a coupler. The engine’s output is hooked to a “gearbox” that has a single adjustable gear ratio that reduces the engine speed to the appropriate output shaft speed to make the propeller work most efficiently. The large tail pipe in the back of the boat is only to allow heat to exit no thrust is created from the exhaust. The turbine is capable of outputs of around 3000 HP and runs on Jet-A (kerosene) fuel. All of today’s unlimited hydroplanes are powered by a single Lycoming T-55 L-7 turbine engine that once powered our military’s Chinook helicopters from as far back as the Vietnam War. He also wears a mask that incorporates an on-board air supply that allows him to breathe in case the cockpit fills with water, but also lets him communicate via the onboard radio.Ī “Rotor Burst protection System” (RBPS) is in place around the “hot end” of the engine to contain the fragments in case of a catastrophic failure of the turbine’s power rotor.
Every driver is required to wear a certified helmet and a HANS device for head and neck protection.
Five point quick-release harnesses are used to keep the driver strapped into the seat and an escape hatch is built into the floor of the cockpit to allow the driver to escape if the hydroplane flips and lands upside down.
#How to build hydroplane boats rc windows
The windows are cut from the canopy of F-16 fighter jets, giving the driver ultimate protection, yet allowing him to see clearly.
#How to build hydroplane boats rc full
The fully enclosed cockpit is the primary safety feature, incorporating a full interior roll cage that is bonded to the cockpit shell to maintain the integrity of the driver area. Driver safety is paramount in the design and operation of an Unlimited, so the boats have a number of systems designed to keep the driver safe in the case of an accident. The boats are between 28 and 32 feet long, 12 to 14 1/2 feet wide and about seven feet from the bottom of the rudder to the top of the rear wing. “Runners” under the sponsons and “shoes” at the rear of the boat are generally all that touch the water during race conditions.Ī modern Unlimited is made of aluminum, fiberglass, carbon fiber and graphite composites, and weighs a minimum of 6750 pounds in race trim. All Unlimited Hydroplanes are a “three point” design, meaning they are designed to only touch the water at three points when racing: at the rear of the two front “sponsons” (the projections of the hull in front of the driver cockpit), and the propeller at the rear of the boat. It represents the product of over 100 years of evolution in race boat design and incorporates the most powerful engines, most advanced construction techniques and the best safety systems available in boat racing today. A modern Unlimited Hydroplane is the world’s fastest racing boat, capable of speeds in excess of 200 mph.
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