Anonymous wrote:

Anonymous wrote:

Bonjour Jacques,

it is of course your decision, and I don't want to push. Your preferred version 1 from Arne will work fine, also. Usually 80% is good enough, if the last percentage points would require a relatively large amount of extra work - in your case, a different mast than at hand. 

I definitely agree with Arne: Please, at least, build cambered panels ;-)

Cordialement,

Paul

 

Yes , with cambered panels .

Jacques

Silly question (perhaps-probably !!): is it possible to use my Bermuda mast by transforming it into a self-supporting mast?

Jacques

Bonjour Jacques,

it is of course your decision, and I don't want to push. Your preferred version 1 from Arne will work fine, also. Usually 80% is good enough, if the last percentage points would require a relatively large amount of extra work - in your case, a different mast than at hand. 

I definitely agree with Arne: Please, at least, build cambered panels ;-)

Cordialement,

Paul

Anonymous wrote:

Paul has a point.
However, we don’t know how and where Jacques’ boat is meant to be sailed yet.
If some offshore sailing is on the program, I would hesitate with rigging with a too tall mast.

The shown sailplan, below, has 32sqm sail area, and with the mast height approaching the height of the Bermuda rig’s mast. This should give a SA/disp. of around 22.3, so she cannot be called under-rigged.

Arne

(Full size diagram on Arne's sketches, section 8)

My sailing area: southern Brittany and mainly the Gulf of Morbihan. No offshore sailing, but tides and strong currents, particularly in the Gulf of Morbihan (mooring buoy  Nevezadenn - Name of my Sangria).

Nevezadenn is equipped with a 6 hp outboard motor, and my goal is to sail as much as possible.

No regattas.

I sail alone and in both summer and winter

When sailing, I seek simplicity and ease.

My goal is to observe the sea—fauna and flora—and to make observations for the citizen science association of which I am the president.

All this to say that the junk rig should allow me to meet these needs. I don't have any specific knowledge of junk rig - I seek advice from you-, but Arne's proposed version 1 seems to meet my needs, especially since the aluminum lamppost that will serve as the mast is 10 m long, and after a few adjustments, it's likely to be 9.80 m long.

What do you think ?

Good Sunday

Jacques

Hi Jacques,

I might be a bit late to the party, but: From what I learned with the junk rig on Ilvy, you can't carry too much canvas - because reefing is so ridicoulusly easy and fast! 

 You and me, we sail about the same boat, a Sangria 25 and a Maxi 77, with pretty similar characteristics, and aSA/Disp ratio bermudan rigged. Right now Ilvy carries 35 sqm, but if I would rig her again, I would go for 40 sqm. 

Seeing you sailplan at only 30 sqm, I feel urged to share my experiences with you and maybe make you rethink. 30 sqm basically is Ilvy with one reef, and sailing upwind undercanvased in lighter winds is no fun, really. 

It is not that much more work to sew 35 instead of 30 sqm, but the difference out at sea will be huge!

Best, Paul

Here, to get you started are Sheet 1 and 2 of the sailplan. If you read Chapter 4 of TCPJR, you will find how to draw Sheet 3 and 4 to let you make camber in the sail, and let you decide the position of the batten pockets.
Good luck.
Arne

(Full size diagrams on Arne's sketches, Section 8)