question about pdracer

[sail102]

if I made my pdracer 3 ft across rather than 4 would it still work?

[DCockey]

Yes it will sail but ......

It will heel considerably more and be easier to capsize. In light air it may be slightly faster due to less wetted area. It will have less space for the crew.

[CutOnce]

Originally Posted by DCockey

Yes it will sail but ......

It will heel considerably more and be easier to capsize. In light air it may be slightly faster due to less wetted area. It will have less space for the crew.

Agree 100%

And ....

It will sit deeper in the water given the same crew weight, increasing wetted surface area somewhat - decreasing the beam increases immersed surface area and drag. Given the already very short length and limited hull speed, I would expect any possible light wind speed gains to be negated.

You would also most likely move the waterline up on the hull enough to get the front and rear chines into the water as well.

Net result: unless you are expecting crew weight to be far less than the design is intended for (and crew skill level to be higher) I would not recommend this.

And it will no longer be a PDRacer ...


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CutOnce

[gonzo]

It will not. 4' is the minimum required by the class.

[DCockey]

Will not sail, or will not be "class legal" if sail102 plans to compete in a PDRacer regatta?

[gonzo]

It will not be a PD racer. If you want to design a different boat then it is another story. What are you trying to accomplish?

[sail102]

you guys will probably think its pretty stupid but...

it is geting cold out and so im building it in my basement and decreasing the beam wouldhelp to get it out

[gonzo]

It's OK to build something that fits in your basement. It looks like the door is, unfortunately really small. Basically, PD's have tight regulations as to dimensions. You may be better off building a canoe or kayak. They are narrow and may fit through the door.

[sail102]

This is what the landing is like we measured and found that we couldn't get it out...



Door
_________________________________________________door




_________________ stairs ____________
} to }
Basement

[daiquiri]

Originally Posted by sail102

you guys will probably think its pretty stupid but...

Then wait to see what I'm going to write...

Originally Posted by sail102

it is geting cold out and so im building it in my basement and decreasing the beam wouldhelp to get it out

How about splitting the design longitudinally, building the two half-hulls in your basement and then joining and finishing them outside, when the weather gets a bit warmer?

Cheers!

[PAR]

The above comments are correct, but one other thing should be mentioned, and that's the lose a fair bit of stability if you decrease the beam. A PDR isn't very "thick" and it should be easily able to go through a doorway on it's rail.

[waikikin]

I think you can make 2 at 2' wide & join em to be class legal as I read it

[ancient kayaker]

PDR’s are rather tall, 18" nominal, but PDR rules allow you to do whatever you want 10" up from the bottom. If it still won’t go through the door on its ear, you can lower the sheerline, especially around midships. And a curved sheerline should relieve the somewhat uncompromising esthetics of the design.

I like Daiquiri’s idea of making the hull in 2 halves, split down the center, but the joint would have to be reinforced internally since the rules do not permit external changes below the waterline and this could cause you to stumble during sailing.

Another solution would be to go ahead and build it, but use only screws to hold it together in strategic locations so you can dismantle it, then screw and glue it together outside when the weather is warmer.

[DCockey]

Fundamental question for sail102, the original poster for this thread:

Is it important to you that the boat which are you building be "class legal", perhaps to be eligable for any PDRacer regattas you might want to enter?

[sail102]

im not building it to enter races I just want a boat