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Old Dec 23, 2010, 11:07 AM
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Robert Pulse's Avatar
Davenport, Iowa
Joined Apr 2007
1,371 Posts
Question
kyosho seawind

I just bought a seawind kit and have been looking at different threads about the kit. Question The kit calls for a futaba 3801 sail servo, that is discontinued. The 3802 lacks the power of the 3801. So what is recomended for a good drop in replacement?
Bob

Oh yes it is here somewhere I just havent found it
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Old Dec 23, 2010, 11:20 AM
Norman2
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Connestee Falls, Brevard, North Carolina
Joined Mar 2006
382 Posts
Look at the Servocity.com site and find HiTec Hi torque servo. Model Number is
HS-645 MG. This is what I use in my 36/600 and AC100 sailboats. Regards
Norman
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Old Dec 23, 2010, 12:33 PM
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seefest's Avatar
United States, MA, Bristol
Joined Sep 2009
1,561 Posts
For boats with 600 Square inches of sail, you typically need around 200 oz-in. I would go with the Hitec HS755MG.
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Old Dec 23, 2010, 01:31 PM
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Robert Pulse's Avatar
Davenport, Iowa
Joined Apr 2007
1,371 Posts
seawind servo

So the hitec will drop in, in place of the 3801? Same size?
Bob
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Old Dec 23, 2010, 01:34 PM
Boomer1
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United States, CA, Temecula
Joined Sep 2009
3,381 Posts
Servo suggestions and hatch upgrade

I have included a picture of the servos I am using. I have had this boat in extreme wind conditions and had no difficulties in pulling the sails. The rudder servo works great as well.

You can still get S3801s off the web. I got one a fews months ago at a fair price from RC-fever.com (do a search for the part number.) Edited 9/10/13 Sadly these have become nearly impossible to find. Possible replacement is the HS 755MG.

I upgraded the stock hatch with the one in the picture. The fellow who makes them sells them on E-bay. Nice looking and they work great.

I made two other modifications you may wish to consider. The first was to replace the string rigging and install 30 or 45 lb test 1 x 7 strand SS nylon coated leader and SS adjustable turnbuckles. Pictures are also included. The other modification was simplify the factory sail management system. I replaced their method with a slightly simpler method. (See the photo- it shows the modification)

Congrats on the new boat!! You will enjoy it.

Boomer

Hatch upgrade http://cgi.ebay.com/Kyosho-Seawind-r...item3a5cff3a3a
Edited 9/10/13 Sadley this items is no longer made.

SS Surflon leader = C045T-4 SS leader and sleeves = S3, 4, 4L Bright (clear)
Google search should provide multiple suppliers

SS Turnbuckles (called rigging screws #030-030) go to: https://www.radioyachtsuppliesaustra...ter-Image.html

Pekabe 482 rigging screw go to: http://cgi.ebay.com/PEKABE-482-Singl...item3a5dd5819b
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Last edited by Boomer1; Sep 10, 2013 at 11:23 AM.
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Old Dec 23, 2010, 01:47 PM
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thorsail's Avatar
Chicago , Illinois
Joined Jul 2008
869 Posts
Hi Robert
if you need to compare physical dimensions of servos the info will be on
the company websites......
www.hitecrcd.com
or
www.futaba-rc.com
but I like this site for info on every servo known to man
www.servodatabase.com

Allan
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Old Dec 23, 2010, 07:58 PM
Registered User
United States, TX, Dallas
Joined Apr 2009
17 Posts
The Hitec HS765HB is the same size and has the slightly better specs. The price is about the same as the old 3801.

Check out the SeaWind forum for more information than you will probably ever need: http://www.seawindrc.com/forums/philboard.asp

Eric
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Old Dec 27, 2010, 12:42 PM
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Robert Pulse's Avatar
Davenport, Iowa
Joined Apr 2007
1,371 Posts
custom sails

Any body make custom sails for the seawind?
Sample
http://cgi.ebay.com/NEW-RADIO-REMOTE...item3363af6cae

Bob
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Old Dec 27, 2010, 03:36 PM
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Dick L.'s Avatar
Minnesota, USA
Joined Aug 2002
1,818 Posts
if you are planning to race - be aware of class rules:

12 SAILS:
12.1 Sails shall be provided in the kit, Replacement sails shall be those supplied by the kit
manufacturer.
12.2 Corners of the sails may be reinforced not to exceed 3 inches from the corner of the
sail
13 BATTENS:
13.1 Batten length and placement shall be as defined in the kit instructions. Alternative
materials of uniform cross-section may be used.
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Old Dec 27, 2010, 04:21 PM
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Robert Pulse's Avatar
Davenport, Iowa
Joined Apr 2007
1,371 Posts
custom sails

I am looking for a set for when I am not racing, for free runs. I will be keeping the kit sails if I race.
Bob
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Old Dec 28, 2010, 03:04 AM
Registered User
Jersey,C.I. (GB)
Joined Mar 2008
172 Posts
Stockmaritime in Germany make some , look here and check out the video;

http://www.stockmaritime.com/modellb...php?lang=en_GB

Edward.
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Old Dec 28, 2010, 12:46 PM
If it floats....sail it!
FoamCrusher's Avatar
Elk Grove, CA
Joined Sep 2002
3,957 Posts
Carr Sails shows them on their price list. Some skippers in our club use Carr sails on their US1M's and they look to to be of excellent quality and are fast.

http://www.carrsails.com/Catalog.html

FC
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Old Dec 28, 2010, 01:04 PM
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Robert Pulse's Avatar
Davenport, Iowa
Joined Apr 2007
1,371 Posts
silk screen

Next hot question. Can I silk screen a design and the numbers on the stock sails and still comply with regulations?
Bob
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Old Dec 28, 2010, 01:54 PM
Guz
Gutless wonder
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Tempe, AZ
Joined Dec 2005
3,117 Posts
Dennis Desprois' of Walurs Sails also has Seawind sails
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Old Dec 28, 2010, 03:54 PM
If it floats....sail it!
FoamCrusher's Avatar
Elk Grove, CA
Joined Sep 2002
3,957 Posts
Quote:
Originally Posted by Robert Pulse View Post
Next hot question. Can I silk screen a design and the numbers on the stock sails and still comply with regulations?
Bob
There are class rules for the location, size and font type of the numbers (assuming you register with the class secretary to get an official number), as well as the location of the Seawind class logo. See the class website for a diagram.

They can be stick-on sail cloth numbers that the sailmaker supplies at added cost, numbers you purchase on your own (See http://www.beanbag.com/wjsails/products.asp?cat=200 at $1 @ - remember you need four sets of numbers - one set for each side of the jib and main) or traced and filled in with a Magic-Marker (or waterproof equivalent). If you mess up you can "erase" with a little acetone and start over.

I have a US1M set of sails from Dennis and put on my own numbers by printing them out on a printer, placing them under the semi-transparent sailcloth, and tracing them on with a marker. That way there are no edges to disrupt the air flow over the smooth surface. These are excellent sails, but I had forgotten he will cut sails for any boat you want from your supplied dimensions. Not many people go to the expense of after market sails for a boat that is generally raced as a tightly controlled one-design class.

If you are not going to race with these after market sails, then why bother with numbers at all?

If it were me,,,,and it's not I would stick with the stock sails, get a class number (only $7) and either go with the stick-on or traced numbers. That way if you later decide to race or sell it to someone who does, then you have the correct numbers that look sharp and preserve the value of the boat/sails.

FC
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