Junk Rig Sails

[KevinT]

I want to outfit our boat with the Chinese Junk Rig. I am looking at a double masted design, with equal sized sails if possible. Although, I am not adverse to a smaller sail up front. Does anyone have any information on calculating mast locations for this rig? I understand that there is a WHOLE LOT of physics involved with this. My boat is 40' long, and steel. I've got plans for a similar boat made of wood of the same lenght. Could the sail plans for that boat be used???

Thanks!

Kevin.

1/ Boat is hole in the water you throw money into
2/ House is hole in the ground you throw money into.
3/ Car is box in driveway you throw money into.


Wife is Queen you give money to in order to carry on performing the first 3 tasks.

[MikeJohns]

Kevin
Best to re post this question in the boat design section.

cheers

[FAST FRED]

I want to outfit our boat with the Chinese Junk Rig.

WHY , are you going to limit yourself to following the Monsoons downwind as the rig is designed to do?

Do you like to play with a dozen lines (Snotters) on every tack?

A modern full battened main is far and away a better sailing companion when made of dacron.

If all you can get is old rice bags , the Junk rig might be more suitable, but for a sail loft bought setup the hassles and total loss of performance should be considered.

FAST FRED

[gonzo]

Junk sails are self tending when well designed. You don't touch anything unless there is the need to reef or shake a reef. The calculations are not different from any other kind of rig. However, you need to have the hull lines, true displacement and trim to do so.

[Wellydeckhand]

Here are some article on chinese look alike sail.......... I think...........

Odd Sails from Polytarp

http://www2.friend.ly.net/~dadadata/oddsails.html

BATWING SAIL

http://www2.friend.ly.net/~dadadata/...Bat_Sails.html

Ruston Batwing Spars

http://www2.friend.ly.net/~dadadata/...Bat_Spars.html

Junk Sail Tuitoral

http://www2.friend.ly.net/~dadadata/junk/tutorial.html

Sorry , I post too much JUNK....... that why this is a JUNK Thread