Anonymous wrote:

Shannon, 

I worked through this a while back, we ended up settling on a schooner rig with 12% lead, unfortunately we're still not in the water to test it out.  You can see some of the details in this JRA thread which might have some other related discussion that might be useful.  For us, the schooner rig was easy to commit to as our mainmast was already in the right position and we only had to move the foremast.  

Daren, I'll follow that thread.  Thank you for your advice, I've updated the drawing to reflect yours and David's suggestions.

Shannon, 

I worked through this a while back, we ended up settling on a schooner rig with 12% lead, unfortunately we're still not in the water to test it out.  You can see some of the details in this JRA thread which might have some other related discussion that might be useful.  For us, the schooner rig was easy to commit to as our mainmast was already in the right position and we only had to move the foremast.  

Anonymous wrote:

Hi Shannon,

Interesting project!!

If it was my boat I would be looking at a schooner rig with the foremast right at the forward end of the coach roof and stepped in the V between the forward berths. The main mast would be at the aft end of the table in the saloon, just aft of the indicated CLR. This would provide better sheeting angles for the sails and would make the sails closer in area to each other, hence easier to handle and balance. This would also give better redundancy in case of a sail malfunction as there would be enough area in either sail to get you home. What is the existing sail area on the boat? I find that 50 square metres is about the maximum I want to go to as I have had problems with batten breakage when over that area. Also sails over 50 square metres get to be too heavy for geriatrics like me and need electric winches in order to raise them.

The CLR looks close to where I would imagine it but it is easy to make a cutout in thin card of the underwater area (without the rudder) and by balancing it on a straight edge this  will give the CLR position.

Best of luck with the project.

David.

David,

Thank you for the advice.  

Concerning the CLR, I calculated it using the cutout method and included the rudder.  Upon consideration however I should compare the results with and without the rudder.  Maybe even take the average.

Concerning the schooner rig.  I am a very inexperienced sailor.  Even so, your observations reinforced my nagging doubts about the wisdom of using the existing mainpost position and step.  

I especially value your feedback concerning sail handling.  The existing sail area is 70 m².  The dream is to sail her in retirement, which isn't far away.  Svelte sails appeals to both my sense of aesthetics and the realities of life (I'm recovering from spinal surgery).  Given your feedback ~40 m² on each mast would seem to accommodate trimming while being manageable.

Your advice is exactly what I am looking for.

Shannon

Hello,

I hope this finds everyone well and happy.  My project boat is an Alden 42 which was available both as a sloop and a ketch.  Mine is rigged as a sloop, #929C 'September Song".  

I've read PJR and am studying the feasibility of a junk rig.  :)  I am seeking feedback on my calculations and planning to date.   I find myself in the uncomfortable position of having a CLR much further aft than looks correct to my untrained eye.

I've based my calculations on a vector drawing that I converted by tracing the outlines from the bitmap available at sailboatdata.com.  Attached is a screen capture of the vector drawing positioned over the bitmap.

At this stage I am trying to answer the following questions:

1. Can I use the existing mainmast step and position?
   1. If yes, where will I need to place a second mast?
   2. If no, where do I need to place the mainmast?

From my drawings and calculations, it appears that I can use the existing mainmast step and position.  Extraordinary it also appears that I can position the mizzen mast in the location show in her sister ships rigged as ketchs.  

Since this is an ideal outcome, I don't trust it.  All feedback, concerns and armchair speculation are welcome, nay encouraged.

Regards,

Shannon