BoatBanter.com

BoatBanter.com (https://www.boatbanter.com/)
-   Boat Building (https://www.boatbanter.com/boat-building/)
-   -   Does my small sailboat need a boom? (https://www.boatbanter.com/boat-building/44881-does-my-small-sailboat-need-boom.html)

William R. Watt June 17th 05 03:50 PM


"Roger Derby" ) writes:

Depending on the hull shape, a little (3" ?) daggerboard protruding from the
bottom gives the rudder something to work against. At least on the Sunfish,
no daggerboard means no steering.


I had a 20 ft centreboard boat with an auxilliary outboard motor. Nobody
told me to put the centreboard down when using the motor. It was quite a
challenge trying to motor in and out among the moorings, impossible with
any wind blowing. Had to sail in and out of the harbour picking my
way among the moored boats. Today I would drop the centreboard a tad. :)


--
------------------------------------------------------------------------------
William R Watt National Capital FreeNet Ottawa's free community network
homepage: www.ncf.ca/~ag384/top.htm
warning: non-FreeNet email must have "notspam" in subject or it's returned

Roger Derby June 17th 05 06:45 PM

Yeah. I marked my (painted white) daggerboard with a felt tip marker to
show how many inches were below the keel and then experimented with various
depths vs. point-of-sail. Zero was never the correct answer unless you were
running up on the beach.

Roger

http://home.earthlink.net/~derbyrm

"William R. Watt" wrote in message
...

"Roger Derby" ) writes:

Depending on the hull shape, a little (3" ?) daggerboard protruding from
the
bottom gives the rudder something to work against. At least on the
Sunfish,
no daggerboard means no steering.


I had a 20 ft centreboard boat with an auxilliary outboard motor. Nobody
told me to put the centreboard down when using the motor. It was quite a
challenge trying to motor in and out among the moorings, impossible with
any wind blowing. Had to sail in and out of the harbour picking my
way among the moored boats. Today I would drop the centreboard a tad. :)




Melandre June 17th 05 07:24 PM

For those interested, here are a few pictures...

http://members.shaw.ca/melanie4/Sailboat.jpg

http://members.shaw.ca/melanie4/Sailboat2.jpg

http://members.shaw.ca/melanie4/Sailboat3.jpg

http://members.shaw.ca/melanie4/Sailboat4.jpg

http://members.shaw.ca/melanie4/Sailboat5.jpg

http://members.shaw.ca/melanie4/Sailboat6.jpg

http://members.shaw.ca/melanie4/Sailboat7.jpg

The daggerboard (now that I know the difference) space is about 1" X
11".

Andre

Roger Derby June 18th 05 03:10 AM

OK. Now what shape is the sail? Three sided or four?

You'll need pintles for the new rudder, so measure the diameter of the holes
in the gudgeons. Make sure one pintle is longer than the other -- it makes
hanging the rudder MUCH easier.

Check out
http://www.duckworksmagazine.com/sto...s/gudgeons.htm or
http://www.jamestowndistributors.com/ == Marine Hardware == Gudgeons and
Pintles

I couldn't tell if your gudgeons were bronze or stainless. I'd match the
material.

The tiller will give you an opportunity to get creative. Attaching it to
the rudder can be done in many ways. I'll send you a photo of the scheme
prescribed by Danny Greene for Chameleon, a nesting dinghy I built. Note
that the tiller is pivoted at the rear of the rudder head and slotted to fit
down over the rudder. No high stress fittings required and it folds to stow
neatly. (The photo was taken during construction and it looks better with
paint and varnish applied.)

Roger

http://home.earthlink.net/~derbyrm

"Melandre" wrote in message
...
For those interested, here are a few pictures...

http://members.shaw.ca/melanie4/Sailboat.jpg

The daggerboard (now that I know the difference) space is about 1" X
11".

Andre




Mac June 18th 05 07:36 AM

On Fri, 17 Jun 2005 18:24:17 +0000, Melandre wrote:

For those interested, here are a few pictures...

http://members.shaw.ca/melanie4/Sailboat.jpg

http://members.shaw.ca/melanie4/Sailboat2.jpg

http://members.shaw.ca/melanie4/Sailboat3.jpg

http://members.shaw.ca/melanie4/Sailboat4.jpg

http://members.shaw.ca/melanie4/Sailboat5.jpg

http://members.shaw.ca/melanie4/Sailboat6.jpg

http://members.shaw.ca/melanie4/Sailboat7.jpg

The daggerboard (now that I know the difference) space is about 1" X
11".

Andre


That's a reasonably nice little boat.

I bet it uses a boom. When you get a chance, though, post pictures of the
sails and mast. If the mast has an obvious boom fitting on it, that will
be a clincher. ;-)

You may want to start another thread if it's going to be a while before
you can post the sail/mast pictures.

Have fun with your project. And I would consider putting a proper foil
shape on the rudder and dagger-board, but maybe that is just me. You could
conceivably get them cut for you out of foam at flyingfoam.com. They make
wings for radio-controlled gliders and airplanes. You don't have to tell
them that your "wing" is really for a rudder on a boat. ;-) You would
just coat the foam with fiberglass, fair it and you are done. It's just an
idea. I haven't actually done this.

--Mac


William R. Watt June 18th 05 05:27 PM


For those interested, here are a few pictures...


Looks like a yacht tender, one of those small boats you see upside down
on the deck of a cruising sailboat. They tend not to be sailed so much as
rowed around harbours which explains sailing parts getting mislaid. Can't
remember seeing oarlocks in the photos.

You can change the rudder mounting hardware if you want. David Bead had
photos of a simple homemade arrangement for his Summer Breeze at
www.simplicityboats.com.

Light mast step and three "hoops" on gunwale forward suggest stayed rig
(mast held up by wires or ropes). Forward placing of mast suggests no jib.
Just guessing. Pulley at mast step and cleat on seat next to daggerboard
slot used to raise and tie off sail. Purpose of piece of metal on back
edge of seat unkown to me.

Good idea to weigh boat if possible. Can use bathroom scales and piece of
lumber for a lever plus simple arithmetic. Also weigh mast, daggerboard,
rudder, sail, ropes. To total add your weigth and have "displacement".

Also neat to find center of balance by positioning on 2x4 laid crosswise
on ground.

Sealed space under seat would be floatation tank. If big ocean wave fills boat
with water it should still float. Look for optional drain plug on floatation
tank.



--
------------------------------------------------------------------------------
William R Watt National Capital FreeNet Ottawa's free community network
homepage: www.ncf.ca/~ag384/top.htm
warning: non-FreeNet email must have "notspam" in subject or it's returned

25or6to4 June 24th 05 08:55 PM

Just throw a 1x10 in the dagger board case (put a couple of holes in the top
for some bolts so that it doesn't slide right down). Screw the boom. Booms
are called booms because they go "boom" when they hit you in the head. You
don't need one to make the boat move. Once you get proficient at sailing
this particular boat, then you can throw up a closet pole for the boom.

Just put the boat in the water and have fun. If it sinks, you'll get wet.
Big deal.

-John


"Melandre" wrote in message
...
For those interested, here are a few pictures...

http://members.shaw.ca/melanie4/Sailboat.jpg

http://members.shaw.ca/melanie4/Sailboat2.jpg

http://members.shaw.ca/melanie4/Sailboat3.jpg

http://members.shaw.ca/melanie4/Sailboat4.jpg

http://members.shaw.ca/melanie4/Sailboat5.jpg

http://members.shaw.ca/melanie4/Sailboat6.jpg

http://members.shaw.ca/melanie4/Sailboat7.jpg

The daggerboard (now that I know the difference) space is about 1" X
11".

Andre





All times are GMT +1. The time now is 11:01 PM.

Powered by vBulletin® Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Copyright ©2004 - 2014 BoatBanter.com