melfolmusic asked:

Mark Evans driving Craig Bonar’s E25 5 liter hydroplane racing at Lake Pateros August 2009

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The Gold Cup on the Deroit River. Live Gig Video

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2009 Seafair Hydroplane Race Unlimited Racing Heat 3B Live Coverage from KIRO TV

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2011 Promo video for the race in Doha, Qatar

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Crash at 2:10

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More than just for appearance purposes, boat hull plans are designed for maneuverability, stability and speed of the boat on the water. There are three types of hulls that you will find in hull designs of RC boats and they are briefly discussed below.

Hydroplanes

Known for their speed, RC powerboats like the outrigger, tunnel hull, catamaran and 3-point hydro have hull designs with more than one surface coming in contact with the water. The boat is lifted out of the water by the trapped air under the boat’s hull space causing a lesser dragging effect since a lesser portion of the hull is in contact with the water. The effect would be higher speeds for the boats. Of all hydroplanes, you will find the outriggers as the fastest but they can be really tricky to deal with. For beginner racers, the combination of speed and better stability are offered by tunnel hulls and catamarans.



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Are you wondering if an outboard boat plan is the right choice for you? Here in this article, we will go over the things to keep in mind with this kind of boat.

An outboard boat has a propulsion system wherein there’s an engine, gearbox and jet drive, all of which are designed to be mounted outside of the transom. Outboard system are also responsible for providing steering control thus controlling the direction of the thrust.

There are some issues which needs to be considered in building a boat using an outboard boat plans. Some of these are:

TRIM

This refers to the angle of the motor to the hull. The ideal angle should be one in which the hull is on the surface instead of plowing through the waters.

Optimal trim will depend largely on factors such as speed, weight , balance and hull design. Of course you will also need to consider the water condition in designing the trim.

MOTOR MOUNTING HEIGHT

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Are you looking for good hydroplane boat plans? What is your requirement? Are you looking for one which is very cheap and easy to make? Here, I am telling you about a type of a hydroplane which can be made in just a day without much expenses.

These are fast outboard – powered planes mainly used for water sports on protected waters. The inventor of these hydroplanes termed them as ‘minimax’, as they require tme to build and give maximum performance and water-sport fun. Seasoned boat builders make changes according to their requirements and make their version of ‘minimax’.



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Should Plywood be Fastened to the Frames when Building a Plywood boat?

Building boats planked with sheet plywood started around the World War II era. Before that, the adhesives used to make plywood were, in short, worthless for marine application; the plies would delaminate in a heavy fog. After the adhesives were improved, it took a long time before professional boatbuilders would use plywood because of its previous problems.

Builders of the time planked boats with solid wood with many seams. When plywood started to be used, builders logically built the same framework and attached the plywood in the same way as they had done with planks. Rarely did that work out. Boats planked with sheet plywood wouldn’t conform to the shape of a planked boat. A surface developed from a segment of a cone or cylinder was required to enable the sheet material to bend to natural curves. The method is known as “sheet plywood development”.

Most builders retained the closely spaced frames with many longitudinals and a zillion fasteners. Then someone reasoned that all that framework wasn’t required. Further down the road, many production boats were monocoque; the boats were built over a form with stem, transom, chine and sheer the only framework members. After the hull was removed from the form and righted, they were reinforced with internal framework, primarily longitudinals. This eventually led to current Stitch and Glue boatbuilding.

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