Toroa rides again, again

Today Sunday was much like yesterday with light variable winds to begin with settling in to a sea breeze around 1.00. pm. Julie and I sailed out past the Rawene peninsula on port tack and headed for Motukaraka where there is a beautiful little Catholic Church on the hill.  There we shunted through to starboard tack and sailed past Rawene across the mouth of the Omanaia river. With abuilding breeze of around 12-15 knots we shunted again with the intention of heading back home. Unfortunately I got the shunt sequence wrong by failing to release the mainsheat from the old starboard tack position and got everything caught up. We very nearly got put aback before I figured out what I'd done wrong. Luckily I was able to unclip the sheet and uncross the lines. Once that was done the proa came back under control and we were able to set off again.
Lesson: Despite vast past experience, one over site  on my part and the whole system goes badly wrong.
I'll have to tattoo the instructions on to the inside of my eyelids. either that our set up a tape of subliminal shunting suggestions whilst I'm asleep!

I'll be working on Paul Bowker soon to convince him to come along with his little video camera and GPS for some vital statistics and footage.

Until then

Harmen

Toroa rides again

Today Saturday dawned bright and clear. The cyclone blew itself out and has now become a high pressure cell.
The sea breeze set in at Rawene around 11.00 am. Julie and I loaded our gear in the car and set off to the beach.

We paddled out and returned Toroa to the shore and I set about making the last changes and adjustments to the rig that I planned last night.

Once set up we caught the high tide and we set off up the Waima River on starboard tack in 10 to 12 knots of breeze.

 We put in a shunt which was trouble free and we set off up river. Toroa covers the ground very quickly now so it wasn't long before we were turning back.
Now I have enough confidence to have another go tomorrow.

I added a new endless shunting line which keeps the tack of the sail from moving about whilst I walk the rig from end to end.
I have managed to stay true to my goal of having no rotating parts all the control lines run through dead eyes and thimbles.

The mainsheet is based on the Kiribati style with a single and double purchase rigged to create a 1, 2, or 3 purchase sheet.
This system allows me to run only the one sheet for either tack, unlike Toroa's old twin sheet line set up. I have set up a clip to secure the main sheet dead eye block to either tack position on the lee gunwale with a light retrieving line tied to the centre cockpit scupper hole. That way I don't loose the end of the sheet through the shunt.

Toroa back in his element

Julie and I relaunched Toroa last week.

The outboard motor however would not run. After several hours of mechanical work I was still unable to solve the problem so I finally relented and took Julies advice. We delivered it to the Sail outboard dealer in Kerikeri. Tony diagnosed a blown head gasket! He assures me it will be ready to collect mid next week. The machine came with a bag full of parts which contained all the gaskets needed for the job which was fortunate.

Toroa's re cut sail looks very good and sets well.
I spent some time yesterday sticking non skid strips on to the decks to give me more reliable footing. I've added a tacking line and I'm experimenting with the shunting set up. I'm concerned that my mast, although sturdy is too heavy which makes the shunt a more demanding process than it should be. I may yet have to replace it with something lighter.

In the mean time Toroa patiently sits at anchor in the harbour at Rawene awaiting a day when there is less wind. Friday I took some time off work. Ironically for me, after weeks of hot settled weather the late summer cyclones have started forming. One has been moving south east down the East Coast of the North Island and affecting the pattern over the north. Overnight on Thursday the wind came in from the south at around 25 gusting 35 knots. I'm hoping for better conditions tomorrow Saturday for a trial sail.

I'll post some photos later.

Harmen

Domestic sewing machine does the job!

I got down on the floor today and set up our little "Brother" sewing machine. It handled the coated nylon sail thread and Novathene fabric quite well.
I had to set up the industrial sized spool of thread on a rod supported by two saw horses above the machine but that was the only problem I encountered other than setting up the thread tension correctly.
Once I'd done some practice runs on some scraps of cloth I sewed up the seams. I only broke 3 needles!
Lastly I sat down to hand sew the two joins in the bolt rope with waxed sail makers twine.

The sail now only needs bending back onto the spars and then I can set up for another dry run.
I'm learning patience which does not come naturally to me.
I do love the process of sewing by hand, there's something hypnotic about the activity. The result is so satisfying, so strong. I like to think of the power this inanimate sail is capable of producing, quite magical.

January 2010 progress on Toroa

Work on Toroa's sail and motor has begun again.
Since November 09 I've been distracted by my physical condition which has affected my wrists and hands.
I've also been very busy at the Rawene Hospital solving problems.

My outboard motor now has the Dierking foil fitted and I've ordered a new 7.1/4'x 5'' prop which arrives next week. (It's a Yamaha prop)

A funny thing about the New Zealand importers of Sail Outboards. When I made an enquiry about a replacement prop they tell me the manufacturers never made a long shaft 2,5 Hp 4 stroke outboard!
The outboard motor catalogue published in a recent NZ Boating Magazine lists 2 prop sizes for a Sail brand 2.5 Hp,  7,1/4"x5" and 7,1/4"x8". They tell me they've never stocked a 5" pitch prop either.

I wonder how my long shaft came into existence? Perhaps it's a figment of my imagination. I've posted some pictures of it, can you see it? It measures 19" from the bracket hook to the bottom plate.
Even the Sail brochure/ hand book that it came with says "Long Shaft, Barge Model 4 stroke, 2,5 Hp."!
Has anyone else got one / seen one or am I alone in the world?
Please let me know.

The reason for the foil is to reduce drag and turbulence around the surface piercing shaft. When unchecked the turbulence allows air to make its way down the trailing edge of the leg causing the propeller to cavatate or loose laminar flow over the blade, thereby reducing thrust.
The foil mitigates this problem increasing motor efficiency by a large factor.
Outboard motors are designed to sit behind a transom so the manufacturers only create a foil for the immersed section of the stern leg. The proa presents the unique problem of a surface piercing outboard which this foil answers very well.

I measured, cut and folded a piece of aluminium panel and wrapped it around the stern leg of the motor.
I do not want this structure to be a permanent part of the motor because I need to gain access to the ports  for leg lubrication and water pump. I riveted a v section tab down the trailing edge of the foil and screwed the other side with s/s p.k. screws so that I can unfasten it any time I need to.

I've laid out Toroa's sail on the workshop floor and I've started the modifications I've been planning.

 

 

I've removed the swallow tail tips from Toroa's old red sail (which is featured on youtube) and I've added them as an extension to Takapu's old sail. This procedure results in giving me more sail area down low allowing me to attach the boom much lower on the yard closer to the tack.

I grafted the fabric together using double sided tape which I will then sew with a zig-zag triple stitch. The stitch pattern is critical to the success of this modification as the sail cloth has been laid up diagonal to the angle of the bias to allow for stretch. If the fabric stretches without the equivalent stretch in the stitching the seam will fail or poor set will result. I'm going to try our domestic machine and if it doesn't cope I'll visit our nearest sail maker in Kerikeri next week and ask them to stitch it up for me.

To Clarify

    Just recently Julie and I attended the New Zealand Proa Congress at Whangaparaoa a few miles north of Auckland city. Several people asked me about my motivation to build and develop proas and if I had plans that could be followed.

    My answer?
I've covered some of this already in my dissertation "Takapu the Proa"

    My motivation is to understand the people and the thinking behind this very unique sailing paradigm, so different from the one I grew up with.

    I believe that the only way gain insight and to understand is to do what others have done before me, not just read about it through the experience and observations of others or observe myself (although that too may be part of the process). Whilst engaged in the process of doing I find that I begin to have a conversation,  both with myself and with something outside of myself. I rarely calculate or draw my solutions but rather I draw from materials and solutions around me with the idea in mind that the universe provides more solutions than the problems that we can create. Many solutions already exist or existed which we either have not yet seen, have forgotten, never knew about or will never know. Toroa has emerged from this process in his current form. There are still details that need addressing, the solutions, already known or awaiting discovery.

    I have not provided plans for Toroa as I'm unwilling to support any potential demand because of the amount of work involved in drawing and publishing them. I don't see this as part of my journey. Toroa is also something of a one man horse, emerging simultaneously with me. I have also developed sailing instincts and experiences that take years to acquire and hone. For me the process of building and sailing go together. I would encourage that others try a similar approach.

    Toroa resonates to the pattern set out by the ancient Micronesians however he is a product of my own vocabulary of skills. I am familiar with my chosen materials and processes, all of which are derived from my surroundings. In this way I am no different from any boat builder who has gone before.
Different from modern boat builders I am following a pattern in an improvisational sense rather than following a specific set of predetermined instructions, this in my opinion is the timeless way of building.

    The more I learn from my experience the more I value this intuitive approach which informs so much else of what I do.

Harmen

"If" By Rudyard Kipling

My Father read aloud to us when we were young.
Our favourite stories were among the writings of Rudyard Kipling.
As long as I can remember, during the course of my father Roelof's working life, he had this poem framed and hanging on the wall beside his desk.
He knew it off by heart as we came to know it too.

Recently I was reminded of the sometimes bitter struggles that emerge from the quest for possession of the riches derived from the various things that we all strive to achieve, creativity in all the varying arenas of human activity from the arts, science, music, historical research, etc.

There are always those people who are envious of our achievements, bitter from a perceived lack of recognition who would seek to undermine the work and worth of others rather than take the risk to sample the opportunity of striving for themselves.

Kipling states it succinctly in this poem.

IF

If you can keep your head when all about you
Are losing theirs and blaming it on you;
If you can trust yourself when all men doubt you,
But make allowance for their doubting too;
If you can wait and not be tired by waiting,
Or being lied about, don't deal in lies,
Or being hated, don't give way to hating,
And yet don't look too good, nor talk too wise:

If you can dream -- and not make dreams your master;
If you can think -- and not make thoughts your aim;
If you can meet with Triumph and Disaster
And treat those two imposters just the same;
If you can bear to hear the truth you've spoken
Twisted by knaves to make a trap for fools,
Or watch the things you gave your life to, broken,
And stoop and build 'em up with worn-out tools;

If you can make one heap of all your winnings
And risk it on one turn of pitch-and-toss,
And lose, and start again at your beginnings
And never breathe a word about your loss;
If you can force your heart and nerve and sinew
To serve your turn long after they are gone,
And so hold on when there is nothing in you
Except the Will which says to them: "Hold on!"

If you can talk with crowds and keep your virtue,
Or walk with kings -- nor lose the common touch,
If neither foes nor loving friends can hurt you,
If all men count with you, but none too much;
If you can fill the unforgiving minute
With sixty seconds' worth of distance run --
Yours is the Earth and everything that's in it,
And -- which is more -- you'll be a Man, my son!

Joni Mitchel recognised the power of these words and has put this poem to music.
It features on her latest album, "Shine"