Whale fin Rudder Modification

[finding41]

I went by the shop today to see if I could get the plaster cast out.
It came right out! I just pulled out on the sides first and flipped it over and pushed down on the top end.
Here are some photos.

 

[Doc_holiday]

I sure hope this works, you have been working too hard on it

 

[finding41]

Doc, I hope so too. It would have come in handy at tonight's race. It was more of a drift. So little wind I was sliding sideways with no control at the start line. I guess it doesn't matter how you cross the line though. As long as it's after the horn.
The purpose/idea of the rudder is to increase the flow efficiency and get some more control when there is little wind. Hopefully it does what is intended. ( I know you can't have control without water passing over the foil. This is supposed to make the water pass a bit easier. This shouldn't have a negative effect on handling or reduce speed in any way.)
By the way I came first of the keel boats! I was also the only one in the keel boat class. The rest were 9 Lasers, 1 MC Skow, and a Laser 2. ( The MC Skow has the same PHRF as me! I don't quite see how that's possible as it skips like a stone across the water.)
I had my fist boating collision tonight. A Laser bounced off my port side. No damage to either. I was on a Starboard tack too.

 

[finding41]

I haven't had time these last few weeks to get to the rudder. I saw it today though. Same spot I left it. So all is good that way.
I have had to get a bunch of other projects done and clean out a garage that I've been using as a auto shop for the last 4 years. Finally done! Yea!
Here is a look at one of the projects. I'm just about finished.
01 F150 Super Crew. I got it as a 3 wheeler.
The other projects are in this other forum. http://saabworld.net/forum.php
Some of those projects are ongoing. But I don't need a garage/shop to complete.

 

[finding41]

Oh I just noticed I took some pictures of the rudder when I added more plaster to the plaster plug I made. (I thought I had some more pictures.) The plan is to make it less blunt. I have to sand a bunch but that will come as time allows.
It's not pretty but it's a start. I''ll get my shape and correct the deficiency's as needed. Then a coat of paint or 2, PVA, gel coat, fiberglass.

 

[finding41]

Well I thought I'd bump this up as I'm almost done rebuilding my SAAB. (It wasn't supposed to take 3 months! But it did.) Link: http://saabworld.net/f9/rebuild-my-2-3t-b235l-29151/
It's a good read.
Feel free to comment on the new miss with the newly rebuilt engine!
I'm guessing... maybe injector O rings or intake manifold gasket leak...
Here is what is holding me up for a few days... Hopefully only a few days. It's only 14" that fell last night.

 

[Doc_holiday]

You Canadians kill me. You know, it may be 0 deg. C there but it's at least 32 deg F here in the US.

 

[finding41]

It's always warmer in the south. I just looked out at the thermometer.. -14C. Chilly. I guess I'm not wearing shorts on my mail route tomorrow!

 

[Tom J]

This all sounds like the vortex generators installed on the leading edges of wings on airplanes. They significantly reduce the stall speed of the wing. Am I correct?