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The new SeaDNA - sea trials complete
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rogerbum



Joined: 21 Nov 2004
Posts: 5822
City/Region: Kenmore
State or Province: WA
C-Dory Year: 2008
C-Dory Model: 255 Tomcat
Vessel Name: Meant to be
Photos: SeaDNA
PostPosted: Sat Apr 01, 2006 10:58 am    Post subject: The new SeaDNA - sea trials complete Reply with quote

As some of you may be aware, all the talk of hull extensions and boat modifications recently really got me inspired. So a couple of weeks ago, I undertook a large project ot make some serious modifications to SeaDNA. The project was completed a day ago and sea trials took place today (see photo below).

Results of the sea trials - performance has been hampered a bit relative to what it did with the propped twin honda 40's. I took those same engines and mounted them in the cockpit and used a stainless motorcycle chain to drive the system so I don't know where all the speed went. Top speed is only 12 knots and the hole shot isn't what it used to be. Pehaps I'm "over wheeled" - maybe DoD Dan can provide the engineering feedback but hey, as Patrick says, these boats really weren't really meant to be "go fast" boats anyway. One unexpected benefit of the conversion is that when I went through a school of herring the paddle wheel flipped several dozen into the cockpit. If I drive it around for a few days, I'll have bait for the whole summer.

Problems: As I mentioned before, trailering is real issue as the wheel is barely off the ground. However a side benefit is that I can tow it around the house and cut the grass.

Anyway, Joyce and I are looking forward to taking it up and down the Mississippi this summer. All I need is a few serious poker players to go along.



Are these boats flexible or what?

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Last edited by rogerbum on Sat Apr 01, 2006 11:37 am; edited 1 time in total
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El and Bill



Joined: 08 Nov 2003
Posts: 3200
City/Region: Lakewood, CO
State or Province: CO
C-Dory Year: 2000
C-Dory Model: 22 Cruiser
Vessel Name: Halcyon
Photos: Halcyon
PostPosted: Sat Apr 01, 2006 11:28 am    Post subject: Reply with quote

Great modification! -- practical, attractive, useful and downright historic. Good on ya! Laughing And a Happy April 1st to you guys, too.
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Halcyon 2000 CD 22 Bought 2000 Sold 2012
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JamesTXSD



Joined: 01 Mar 2005
Posts: 7088
City/Region: Tropical Tip of Texas
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C-Dory Year: 2007
C-Dory Model: 25 Cruiser
Vessel Name: "Wild Blue" (sold 9/14)
Photos: Wild Blue
PostPosted: Sat Apr 01, 2006 12:04 pm    Post subject: I see the problem... Reply with quote

You need an adjustable bracket on the paddlewheel. Having done this same conversion (and we have it patented, btw) on several of our sailboats, you will find that some up-down movement will take care of all the problems you spoke of. Getting the wheel deeper will give you that holeshot... so much so that you may need to put on wheelie bars (like the old VW trikes). Putting the wheel in the up position at anchor or while trailering will provide a way to top off the batteries, much like a windvane.

Besides getting bait, with some practice you will find that it slices, dices, and even makes julienne fries. Wink

Congratulations on this conversion - and right on time! Laughing

Best wishes,
Jim B.

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TyBoo



Joined: 23 Oct 2003
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PostPosted: Sat Apr 01, 2006 12:27 pm    Post subject: Reply with quote

Roger, that's funny as all get out. How many years did you go to school, Doctor?
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416rigby



Joined: 31 Mar 2004
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City/Region: Port Angeles
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C-Dory Year: 2001
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Vessel Name: Foggy Dew
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PostPosted: Sat Apr 01, 2006 1:09 pm    Post subject: Reply with quote

Very nice! Maybe trim tabs will help you get just a bit more speed? Laughing

Now that was funny.

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TyBoo



Joined: 23 Oct 2003
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PostPosted: Sat Apr 01, 2006 2:40 pm    Post subject: Reply with quote

Roger as a young boy:

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DaveS



Joined: 01 Nov 2003
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PostPosted: Sat Apr 01, 2006 2:55 pm    Post subject: Reply with quote

Roger and Tyboo...........Too Funny....both of you clowns!
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Sea Wolf



Joined: 01 Nov 2003
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PostPosted: Sat Apr 01, 2006 4:28 pm    Post subject: Reply with quote

Roger-

Y'all bring that Southern Belle down to Lake Shasta and we can take it bass fishin' in the next tournament!

If you need more power, I've located the gas turbine stolen out of starcraftom's helicopter:



Joe.

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"Most of my money I spent on boats and women. The rest I squandered'. " -Annonymous
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oldgrowth



Joined: 27 Jun 2005
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PostPosted: Sat Apr 01, 2006 10:32 pm    Post subject: Reply with quote

Roger - can you send me the plans on your extension? After seeing it, I think I will try and integrate it into my stern extension. Do you have an extra wheel setting around? Probably have to be a little smaller, because it will be going on a 16 Cruiser.
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Last edited by oldgrowth on Wed Mar 05, 2008 3:09 am; edited 2 times in total
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Norm S



Joined: 20 Jun 2005
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PostPosted: Sat Apr 01, 2006 11:05 pm    Post subject: Reply with quote

Nah Dave, I think you should go with Joes idea. go with the tubine and just make it a 6 foot extension. That way you'll have room for the 500 gal fuel tank.
Norm

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rogerbum



Joined: 21 Nov 2004
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City/Region: Kenmore
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C-Dory Year: 2008
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Photos: SeaDNA
PostPosted: Sun Apr 02, 2006 12:39 am    Post subject: Reply with quote

oldgrowth wrote:
Roger - can you send me the plans on your extension? After seeing it, I think I will try and integrate it into my stern extension. Do you have an extra wheel setting around? Probably have to be a little smaller, because it will be going on a 16 Cruiser.


Plan, PLANS!?!? WE DON"T NEED NO STINKIN' PLANS!!!

My recommendation would be what Red Green did - get yourself a used revolving door. The nice thing about that is you get improved rear view visibility.
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oldgrowth



Joined: 27 Jun 2005
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PostPosted: Sun Apr 02, 2006 2:15 am    Post subject: Reply with quote

Roger I need some kind of plans. Your design looked like it may be over my head, so I decided to do as Norn S suggested with a slight modification.
Quote:
Nah Dave, I think you should go with Joes idea. go with the tubine and just make it a 6 foot extension. That way you'll have room for the 500 gal fuel tank.

I will use an underwater jet instead. That way I have room for a larger fuel tank on board.
I did a preliminary sketch.



Last edited by oldgrowth on Wed Mar 05, 2008 3:10 am; edited 1 time in total
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Pat Anderson



Joined: 02 Nov 2003
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PostPosted: Sun Apr 02, 2006 9:42 am    Post subject: Reply with quote

[Red Green impersonation voice = ON]
Today I'm gonna show you how to make a surf board out of an ordinary plastic picnic table. You're gonna need your chain saw and a couple of rolls of duct tape...
[Red Green impersonation voice = OFF]


rogerbum wrote:

My recommendation would be what Red Green did - get yourself a used revolving door. The nice thing about that is you get improved rear view visibility.

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Knotty C



Joined: 23 Mar 2005
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PostPosted: Sun Apr 02, 2006 3:34 pm    Post subject: Reply with quote

Great modifications! Ken was discussing his planned modification on the Blue C a while back. Something about a flying bridge.... I wonder if he still plans to take on that project?

Don
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rogerbum



Joined: 21 Nov 2004
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City/Region: Kenmore
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Vessel Name: Meant to be
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PostPosted: Fri Apr 01, 2016 2:25 pm    Post subject: Reply with quote

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