Re: [junkrig] junk rigged beach cat
- Hi Ray.
Regarding your Dingy.
The geometry of the sail has little to do with efficiency.
Paralel battens are most practical when it comes to reefing, and it is for easy reefing we have the Chinese lug.
The Hasler/McLeod sail neen a shorter mast than the Van Loan type for the same area.
For this reasons, I would chose the Hasler/McLeod sail.
To make the sail efficient, I would sew inn a litle camber in the panels. 6 to 8% of the cord.
Distance between paralell battens ca. 2'.
----- Original Message -----
From: Ray Aldridge
Sent: Monday, February 28, 2005 11:38 PM
Subject: [junkrig] junk rigged beach cat
I've been interested in junk rig for many years, ever since I first read about
Hasler's Jester. Unfortunately, all the boats I've owned have been Bermudian
and I never got around to converting one of them.
I've built several small boats, but always to someone else's design. I'm
planning to build from my own design soon, and since of all my boats my
all-time favorite was an old Wharram catamaran (a 27' Tane) I'd like to build
a trailerable beach cruising cat.
I understand that multihulls are not generally thought to be appropriate for
junk rig, because the high speeds bring the apparent wind forward and the
junk rig is not as able to windward as Bermudian. But to paraphrase Dick
Newick, everyone wants their boat to be fast, comfortable, and cheap-- and
you can have two out of three. If you build a small cat to be cheap and
comfortable but not particularly fast, the boat still has many advantages
over a pocket monohull cruiser, in my opinion.
To start out, I'm going to try a junk rig on an 11' dinghy I built a few years
back-- Dave Gerr's Nester, which separates into two pieces for deck stowage.
Here are my questions, and I'll be very grateful for any help. Is the
Reddish rig definitely superior to windward, compared to the Hasler and Van
Loan variants? Would the difference be worthwhile, compared to a Van Loan
sail with camber built into the panels? How many lower panels are
appropriate in a small dinghy sail (say 70 sq. ft?) And finally, does anyone
know of a good tutorial for using the Sailcut8 program? I can't seem to
figure out how to input specific values-- the slider bars are not labeled in
the version I have, which I got just a few days ago. Also, there are no
proportions on the panels output, so how do you use the output to cut a sail?
If anyone on the list lives along the Northwest Florida gulf coast and sails
with a junk rig, I'd sure like to talk to you about it.
The junkrig "Files" section is at: http://groups.yahoo.com/group/junkrig/files/
The overflow "Files" section is at: http://groups.yahoo.com/group/junkrig2/files/
The "Photos" section is at: http://photos.groups.yahoo.com/group/junkrig/lst
The "Links" section is at: http://groups.yahoo.com/group/junkrig/links
Yahoo! Groups Sponsor
Yahoo! Groups Links
a.. To visit your group on the web, go to:
b.. To unsubscribe from this group, send an email to:
c.. Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Non-text portions of this message have been removed]
- Victor, thanks for the reply.
I'd probably prefer the Hasler/McLeod rig, as you recommend, because I
understand the sheeting arrangements better-- there doesn't seem to be
any easily available diagram and description of the Reddish sheeting
set-up. I would assume that Reddish disagrees with the idea that the
geometry of the sail has little to do with efficiency, though he
apparently believes in building a little camber into his panels these
days. Probably I don't understand the theory of the sail, but isn't
it that twist serves as camber?
Thanks again-- it's really good to hear from folks whose knowledge
comes from practical experience with the rig. Easy reefing is
certainly a huge consideration for me.
--- In email@example.com, "Victor Winterthun"
> Hi Ray.is for easy reefing we have the Chinese lug.
> Regarding your Dingy.
> The geometry of the sail has little to do with efficiency.
> Paralel battens are most practical when it comes to reefing, and it
> The Hasler/McLeod sail neen a shorter mast than the Van Loan typefor the same area.
> For this reasons, I would chose the Hasler/McLeod sail.panels. 6 to 8% of the cord.
> To make the sail efficient, I would sew inn a litle camber in the
> Distance between paralell battens ca. 2'.
- It seems to me that hinges or cut rounds (quilting) in
junk sails allow greater sail area, are simpler, and
offer camber when well reefed. I think the jury is
still out on the benefits of variations of creating
camber right at the leach. I think the Reddish rig is
obsolete in comparison, due to these advantages.
Do you Yahoo!?
Yahoo! Mail - You care about security. So do we.