Post your design ideas

just discovered this thread

this is what I am starting in a couple of days

http://www.tacking-outrigger.com/r_boat_3.html

Idea is something very seaworthy yet is also beachable, for trips of several days

I am starting on little things like crossbeams and hatch covers, this gives me sometime to optimise the hull shape. I will build slowly over 6 months or so, and be ready for some good trips when our summer down here kicks in again

Not shown as yet in the sketches are the fold down wheels. Use aluminium Vee struts

peter

 

Peter, looks like a very interesting project. My only negative observation after a quick look is that your foils seem a little small.

 

Peter, is the transom leaned "backward" purely for aesthetic reasons? (less weight if made the other way)
/Brosan

 

hello,

thanks for your pointers. At the top of the page are some drawings that are a fraction earlier, at the bottom of the page are some drawings a bit more recent

Transom, idea was to slope it a little like a dory to protect from a following sea, however I think this is not really done in mulithulls, and is not worth the hassle. Thus for simplicity I have moved to a vertical transom.

Foil size, I need to look at other boats and see what they have, from that work out what would be appropiate rudder and centerboard size. Yes rudder could be a few inches longer. There is about 27cm between the floor and the keel, so that gives me a place to put the board. Thus extending the board some more would be easy to do.

n peter evans

 

Peter, my view, and I could be completely wrong, is that many multihulls have rudders that are too small. I think the reason for this is that at high speed, small rudders will be perfectly adequate, and will have less drag than larger rudders. However, these small rudders tend to make the boat less handy at lower speeds, and I would rather give up a little speed on the top end, and have a very handy and maneuverable boat at lower speeds.

 

Gday Ray

Rudder was just sketched in about 40 seconds on the computer in MS Paint, was kind-of what looked right at the time.

My previous rudder, was shallow draft, about 12 inches long, and about 6 inches deep, it was really bad, I had big problems in getting directional control

There was a rudder going on eBay, at a different town, it did not sell even though the reserve was 99 cents. Postage I worked out at $15. Trouble was that the fellow was not keen on wrapping it up and posting it. I sent him a follow up email (twice) but no reply. Was from a Sunmaid 20 (whatever that is)

We have five day break here (Easter)
am starting on little things like hatch covers first. Then move onto crossbeams. I can make a rudder, it will definitely be kickup.

This gives me time to optimize the hull shape. I think I need to add some more buoyancy aft. My guess is that where I have shown the center of gravity is too far forward for what will happen in reality. With me sitting aft, and probably a motor too, center of gravity is likely to be aft of where I have placed it.

Thus I need to slightly refine the shape, carrying the maximum beam aft some more, and widening the stations at the stern slightly for better load carrying.

In other news, am off to buy a band-saw and a drill press to improve my wood working skills, downside is that I say good bye to $950 (ouch)

I will have another go, maybe work out what my rudder size and centerboard size should be with more precision. Analysis will be mostly looking at what other boats have done (and then maybe adding a little too)

your pointers are appreciated

peter evans

 

A lively Subject. The Crowther International 23 had it all.

 

SMG's Ninja Pro

I would really like to build this outrigger/proa, not buy it. I do have Gary Dierking's book, but would rather try this tacking proa called 'Ninja Pro' by G-Force http://www.g-forcedinghies.com/

Where can I find some plans for hulls like this?

 

In short I do not think there are any plans available

my list of tacking outriggers
www.tacking-outrigger.com does not have anything really like that

I guess in some ways you will have to work it out yourself. copying the hullshape should be reasonably easy to do; a rough shape could be worked out on a computer program within 45 minutes work. But a hullshape is different from plans of course

 

I am sure some of you have already seen this on other posts ,..but I designed then built this boat with built in trailer and hitch,..electric/gas propulsion,..or just electric ,..or just gas.
it is titled as a Boat with built in trialer ,..so I only have to register it as a boat,..no that is not me in the photo,.. it is the day I got it registered and we were taking the boat for it's first legal ride

 

to Kootz

I just remembered

Salmo Boats, maker of the Salmo 19 outrigger canoe, also have plans available for a 15ft version, from memory 95 euros in stitch and glue. It has a leeboard as opposed to a daggerboard, is the best that I can think of right at this moment

 

Thanks for the link Peter. There were a couple of tacking outriggers with sloop sail plans. That Mk2/Mk3 and the Raptor/Slatts were coming closer. I'll try some of that hull design software and see what I come up with....for a newb anyhow.

 

================
Chase, that is flat brilliant! Hope it can work into a production version that you benefit from. Good Luck!

 

Thank you Peter, I checked that out, and I saw a 19' outrigger.

 

Thank you Doug, me too! I have a few other designs in the works too, 1 is a motor that I can get to run, but it won't take a load, yet, on my 4th reconfig now, it doesn't use any burnable or cellular fuel or compression, I'm hoping it will turn a small generator when its done