help with the design

[learning]

Hi:


I search some person who could give me her opinion ,of a mini project that I am designing , and can test the plan with a ingeniering program.

I do not have studies of engineering.

If someone can help me will be welcomly

I can offer help in con programs , etc.

Regards

[Mikey]

Nice work, I'd suggest a less wide aft though, it makes the Pogo 40 look narrow. Twin rudders will only mask problems slightly, not make them dissapear.

Have a good read of this thread Seaworthiness

[learning]

Thanks Mikey.

What the people think about canting keel and keel elevable ??

Regards

[Tim B]

Keep the whole boat as simple as possible. There are modern fads that seem to be quite dangerous at times. Professional designers SHOULD take a decision based on the complexity and performance increase of said fads, but often it seems like it was an afterthought. A surprising number of modern racing boats have been very fast on paper, but not quite made it from one end of the course to the other.

With transom width, it is hard to tell, however if the race is mostly down-wind, then more beam is beneficial, as you will start to plane sooner. Upwind, the canting keel will allow you to get away with a relatively narrow boat, thus reducing drag. To make the decision you need to run the boat through a VPP, changing beam. You will find there are optimums for up-wind and down-wind sailing.

Finally, the mast looks to be a bit too far forward. With racing boats balance is quite important. There's no point in generating more drag from the rudder than you need to.

Tim B.

[Mikey]

Originally Posted by Tim B

A surprising number of modern racing boats have been very fast on paper, but not quite made it from one end of the course to the other

Amen to that.

I wouldn't be the best one answering questions about canting keels, simply because I am designing a cruiser, not a racer so I haven't researched the area. But there is quite a lot of useful info on this site, search for "canting", you'll be surprised how much you find 226 threads with the word canting in

Mikey