Progression of Design

Based on "Donar Car" build.  The Swimbug will be built using the Volkswagen old shaped Beetle. ("A Bug") Based on "Donor Car" build.

The VW Beetle is available world wide. 15 million was produced so plenty of Donors. Dune Bugs and Beach Buggy's are created in this way standard procedures are written up for this type of conversion.

The basics of build are:-

  • Body removed from VW Beetle
  • All components to be used on Swimbug.
  • Shortening off wheel base.
  • Swimbug Body onto VW Beetle chassis
  • Water Propulsion Installed  

The project is well under way. The "Science", the Concept and Methods have all been worked out and confirm all is achievable. To date we have acquired Polygon CAD of vehicle. With a good “curvy" shape redesign

 

Computer-aided design (CAD) Diagram

On this CAD drawing, we have pinched and squeezed to achieve, the more modern stance. We need to focus on the CAD designing. This is so important as the fiberglass body has to fit around the beetle chassis perfectly. Where bolted to the chassis, has to be exact. There can be no room for error, so measurements and changes will be done until we are completely satisfied

Temporary Timber Frame To Create "Master Mold"

 Once satisfied with CAD drawing a timber frame will be assembled around VW Beetle Chassis

Sections cut from CAD using a CNF cutter.

A "master" mold will be taken from wooden frame.. We can then make 1000s of SwimBug body's using the Master. We have completed a section of wooden frame as a test, This was very successful and is passed as one of the methods for the Vehicle build

Chassis 

Chassis and Engine has been acquired and prepared, ready to except Timber frame. 

Chassis and Engine are very easy to prepare to this stage. Anybody with a beginners mechanical knowledge can easily achieve this. Which is great for the Kit Building Market.

Water Propulsion

The SwimBug needs a propulsion system to drive it through the water.The Swimbug will use the latest in technology with electric pod motors driving the craft through the water. 

The propeller will be a commercial unit as used in water ski impellers.

The electric motor will probably go through a reduction gear of 4:1 to reduce the power requirement to move the propeller.

1000 RPM on the motor will have 250 RPM on the propeller, giving the motor four times the power effort required to move the propeller in water.

This will reduce the ampage required on the motors considerably.

The electric pod motors do not need to rotate or move direction, as the front steering of the wheels will give all the direction and steering required generally. The speed controller could be configured to drive more power to one pod motor than the other to generate effective steering by adjusting thrust from one side of the craft to the other.

Battery Charging for Propellers

The Swiwbug will have three 12V batteries connected in series to give 36V of running power. These will be charged up while the buggy is driving through a 36V 180A alternator and a charger rectifier. When the Swimbug is running in water, it will have the petrol engine running at low revs. Enough to charge the battery's. This will give us the ability to remain in the water indefinitely.

As soon as the buggy is driving with the engine, the batteries will be automatically recharged to replace energy used during a boating excursion.

Completion of Build

You can see from the above that all we need to do now is put these plans together. This will then give us a working protype that can demonstrated to the Markett. Protype will be used in Media and Shows (motor boats shows) to generate sales.

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