Bernd:

??? Thanks for the prompt reply.?? Your English is better than my German from 40 + years ago ;-)

??? I take your weight example to mean an essentially finished interior, no rigging, to mean no mast or standing rigging, running rigging or sails??

??? I am the guy who's been casting about for junk rig options on voyaging multihulls, and focusing in particular on Searunners.? I find myself single handing more often than not, which is one reason I intend to sail with a junk rig, and also one of the primary reasons for a multihull.? The physical stress level is far lower from what I've experienced on multihulls than on monohulls, which multiplied by weeks on a passage is a big deal.?? Single handing is also the reason I want a smaller boat.......? Unfortunately in multihulls I run up against weight limits that have forced me both to look at strategies to reduce weight, and to look at larger boats than I want.

??? The watermaker is really the only reasonable solution for a boat with limited payload.??? I'm working on drawings and calculations for two human powered watermakers, which address 4 problems. One being the weight of water, another being lack of sufficient exercise on passage, another being limited battery weight, an lastly the questionable quality of local water.?? A normal human can easily produce a day's supply of water in a relatively short period of time using an efficient design.? Ideally that system will incorporate things that you want to carry anyway.? Half an? hour to an hour of moderate exercise using pedals or a rowing system........? I personally would not travel without some sort of bicycle, and it is not complicated to incorporate a bicycle or parts of one into pumping.? It's not a new idea. ? Rowing offers a better full body workout, but does not lend itself as easily to this.. It's more of a challenge, and not as easily adapted to off the shelf items.

???? Refrigeration is perhaps the most absurd onboard system behind pumped pressure water.? Ice is a wonderful "battery".? Where I live we say "make hay while the sun shines".......... To paraphrase this....."make ice while the sun shines".......? I needn't say more on this topic really.??

??? Modern electronics, LED lighting and lithium batteries offer unprecedented opportunities for power savings.? Combined with conservatism it offers a lot of potential weight savings.

??? To put things in to some perspective here, I've worked with my hands all my life.?? I've designed and built countless systems, mostly agricultural, involving mechanical electrical, hydraulic, and electronic systems.? I'm currently building my fourth boat........ all small, this being a 15 foot junk rigged sailing trimaran.? I've done strip plank, skin on frame, and stitch and glue.? I own welding and machining equipment, obviously know my way around wood and epoxy, and I build things using electronics, penumatics, and hydraulic systems.?? It's what I do, and what I know how to do.? It's my life, and my customers come to me because I can come up with solutions that work and keep working.

??? Negativity is something I encounter constantly, and while I listen and evaluate it, it doesn't dissuade me from my course, though I'm sensitive to the fact that it may point me to things I had not taken into account.

??? The junk rig is such a situation.? I've been following Pete's progress from a half assed iteration of the Aerojunk to the soft wing sails to the current rig, which more or less follows Paul McKay's original innovative design.? I know about his loss of the AV panel on Oryx, and installation of mini keels, something I instinctively dislike on a cat.? It's pretty clear to me that he is not satisfied with the performance of his biplane rig, or he would not have gone through these changes.? I've followed Arne Kerverneland's work on the cambered junk rig, as well as Slieve MacGalliard's work with the split junk rig, and Paul McKay's Aero Junk, not to mention the work done on the soft wing sail systems.?? My current small scale project is intended as a test bed to determine which direction to go with this.? The investment in a 15 foot boat is many times smaller than a full size project.??? It has become very very clear that I have to draw my own conclusions.... and take full responsibility for the results, but that's how life in the real world is.

??? They Hedly Nicole / pete? hill? solution of mini keels does not appeal to me, a multihull caught in a storm needs to be able to slide sideways, and anything reaching down into "solid water" beneath the aerated surface, is a "tripping" liability.? Dagger boards are a problem.... If they hit something, they either shear off, or damage or destroy the case / trunk.?? Centerboards take up space in the hulls, in the case of the Searunners, 2 of the 5 major sections of the hull.??? Lee boards present the the problem of support.......? How do you support them properly?

??? I'm not saying anything you have not spent nights tossing and turning, seeking solutions to.? You, Richard Woods, Simpson, Warram, have all wrestled with the same issues and arrived at various solutions / compromises.??

??? I started with the trimarans....... one mast, one rig.......I like that.??? The Searunner 34 or 37 has a lot of appeal for that reason.? Jim? Brown and John Marples are great designers.??? The '34 is about ideal, but not available for all intents and purposes.?? The mast must be offset for interior clearance issues, and I have no real issues with that.? Cats offer two load bearing hulls, and that means ONLY biplane rigs are viable as far as free standing junk rigs masts are concerned.?? I plan to live aboard this boat with no "home ashore", and that is a big factor.? The small cats caught my attention...... Two load bearing hulls out of two,? not one out of three.???? I'll probably end up where I started.? There is no ultimate solution.? Compromise is the order of the day.


??????????????????????????????????????????????????????????????? H.W.

P.S.? Sorry for writing a "book"........My inclination is not to go off "half cocked".?? I read everything I can get my hands on....... that's relevant.

???


On 11/23/2017 11:51 AM, Bernd@... [k-designs] wrote: