OzOne wrote in message

Round it off, taper the trailing edge.

Joe likes to "shave" with his rudder... :-)

CM

I'm going to taper the leading edge to a knife like
sharpness.


Scotty wrote:
I don't think you want to do that.

Scotty


Joe wrote:
How come?


This may be counterintuitive, but when the foil
(centerboard, keel, or rudder) is working, there is a slight
flow across the leading edge. Then remember that it has to
cope with big disruptions in the flow, such as when the boat
rolls or pitches or turns. The foils are waggling about
under water and have anything but ideal flow.

The best all-around leading edge shape for a small sailboat
is an ellipse, it's relatively easy to achieve & keep and
works under a very wide variety of speeds & conditions.

There's a *LOT* of stuff written about this, try googling
something about leading & trailing edges, NACA foil
sections, L/D ratios, and the like.

Here's a good section:
http://www.nasg.com/afdb/show-airfoil-e.phtml?id=260

Fresh Breezes- Doug King

OzOne wrote:
On Thu, 08 Jun 2006 10:34:51 GMT, "Capt.Mooron"
scribbled thusly:


OzOne wrote in message

Round it off, taper the trailing edge.

Joe likes to "shave" with his rudder... :-)

CM

Either that or his tub spends a lot of time going backwards.

It's not a bad tub Ozz. Here in this picture you can see the kick up
rudder before the aluminum frame parted.

http://image30.webshots.com/30/5/67/...6DdkPsY_ph.jpg

I will post a repaired picture soon. With the rounded leading edge and
tapered trailing edge :0).

I have the material, hopefully tonight I will have the time.

Joe





Oz1...of the 3 twins.

I welcome you to crackerbox palace,We've been expecting you.

OzOne wrote:
On 8 Jun 2006 10:16:08 -0700, "Joe"
scribbled thusly:


OzOne wrote:
On Thu, 08 Jun 2006 10:34:51 GMT, "Capt.Mooron"
scribbled thusly:


OzOne wrote in message

Round it off, taper the trailing edge.

Joe likes to "shave" with his rudder... :-)

CM

Either that or his tub spends a lot of time going backwards.

It's not a bad tub Ozz. Here in this picture you can see the kick up
rudder before the aluminum frame parted.

http://image30.webshots.com/30/5/67/...6DdkPsY_ph.jpg

I will post a repaired picture soon. With the rounded leading edge and
tapered trailing edge :0).

I have the material, hopefully tonight I will have the time.

Joe


Great toy Joe.....you might even learn to sail :-)


I hope so,I've had the boat 8 yrs now...but ...just received my brand
new set of ("used once") bumble bee Hood sails. They are black and
yellow horz. striped with an albatross symbol on them. Not sure what
boat they were made for but they fit the librisa like a zoot suit.
Totally cool sails...can't wait!!!!!

Loose footed main, and matching RF 100% jib... and HUGE big ass
spinnaker. Have a Harken roller furler for the boat. I'm going to go
ahead and pull the boat out of the water and fix her nice up for the
summer squalls.

I got a feeling it's going to be a wild & wet summer.

Did you notice the vintage 15 ft immitation birch bark canoe on the
dock?
It's chopped sprayed fiberglass. Sears & Robuck. Great for windless
days.

Might go island hopping in Galveston bay this weekend with RedCloud
and bring the canoe along to surf the ship wakes next to RedFish
Island. Surfers have ridden miles near the trinity bay cut on the ship
wakes.


Joe





Oz1...of the 3 twins.

I welcome you to crackerbox palace,We've been expecting you.