How to design a rigger

[Sigge]

Hi guys,

I have an idea to design my own rigger-style boat. I have never designed a boat, and just use my imagination and the aerodynamics I know (very little).

I wan the rigger-style boat to be able to carry 32 cells and a GPS receiver (eTREX).

For starters, how long shall I make the rigger's hull?
Is it just to put the boat's future contents on the floor and measure the length? Or should I think about anything else regarding the length?

Where do I put the two sponsons?

Any help is appreciated!

/Sigurd

[AndyKunz]

Here's how I would approach it:

I would start by upscaling the 12-cell rigger I designed, which in turn I scaled up from a 6-cell rigger I designed, which was an adaptation of a 6-cell that I built from a kit.

I stopped at the 12-cell rigger, as riggers are not as much interest as Sport hulls.

Walk before you run.

Andy

[eddieh]

Andy That's sounds very good, but how do you know how much to scale up, is it by the number of cells??? ie 6 cell rigger so and so, 12 cell rigger twice that?? I really don't have any clue, any input would be great, cheers eddie

[Sigge]

Well, I can walk and run, so now I want to fly with my boat :-)

I have an idea about making the hull in plastic so I can get fast turnaround times for new protypes ( I am now wood builder - yet).

How about the CG: where is it usual to put that?


/Sigurd