Rabu, 30 Maret 2016

Boat Plans Aluminum | construction commences!

Boat Plans Aluminum


about a year late... but hey. what can you do.
hopefully it will all be done in time for the states on the 19th of april. if the new foils maiden voyage is race 1 then i guess that constitues success. !.
The foil is designed with some sneaky new improvements, and i have re-surfaced the moulds (they are a fraction more accurate to the NACA shape now) and added and subtracted aluminim strips as appropriate. The front edge of the foil is now 10mm forward of the strut, so that the rod has more leverage on the flap. Ive stuck the moulds back together like before, so that all the angles are adjustable, using longer bolts this time, and the result resembles some kind of fusion beween a smoked chedder and a jarlsberg. lots of crumbly holes. whatever, theyll get covered in wax and resin anyway.

Ive also designed a new gantry, maxed out to 500mm, as the spacing between my foils is, well, close, due to the limitations of working with an existing boat. Ill make a good mould for this so that sometime down the track, if need be, i can make a good, light version with my vacuum gear that im going to buy when i get cash. Although if there is a new hull, there may as well be a new gantry. orrite so ill make a slap-up mould. or just buy vaccuum gear now.
Ive sussed out a (hopefully more effective) new rudder flap adjustment system using a piece of string and a cleat and some elastic/pulleys etc. well see how that goes.

also my stsainless cables inside the foils are going to get replaced with some nice smooth fibreglass rod. the centreboard first, the rudder may need to wait until after the states. Ultmately there will be a bladerider style tube through the foredeck so i can do away with the friction-friendly throttle cable. and a new wand hinge mechanism.

i have my work cut out for me i guess, but im on holidays this week so ill get right into it and see if i cant get a foil laid up and a gantry laid up by next friday
to buy:
carbon.
release wax and PVA release agent
resin
fibreglass rod & end fittings
new wing tramps
some rope and pulleys


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Boat Plans Bolger | This is Pressure treated plywood boat building

Boat Plans Bolger


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Off-Road Trailer Build

Free Standing Deck Plans

Free Standing Deck Plans

Outdoor Storage Shed Plans

Outdoor Storage Shed Plans

Treated Wood Retaining Wall Design

Treated Wood Retaining Wall Design

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Boat Plans Canada | On the subject of expansion in a contracting world

Boat Plans Canada


A question, apparently, that needed asking, real numbers seldom lie, and something you may need to think about...

Listening to the Governor of the USVI on the radio this morning talking about local economics and turning St Thomas into a big shopping mall was quite interesting and got me thinking long and hard about how a lot of what some people think is just seriously batshit crazy.

And were not talking the good kind of batshit crazy.

On the other hand, maybe its me whos a few sanwiches short of a picnic and  the best way to get out of crippling debt is to borrow more rather than live within ones means.

Listening to PK Dwyer

So it goes...





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Wooden Boat Plans And Kits | Intracoastal Miami

Wooden Boat Plans And Kits


Intracoastal Miami:  Dinner Break (mobile phone photo by SOS)





SandyBottom and SOS reached the first bridge in Miami (Rickenbacher Causeway) at about 4:00 pm.  The NOAA charts indicate this bridge has 76 of clearance. 

??
SPOT Trackingat 4:00pm
??
NOAA Chart

A few thunderstorms ranged across Florida at 4:00pm.
Intellicast Radar
SOS and SB called home and reported heavy powerboat traffic along their route:  its the weekend with many fishermen, and its spring break so there are many recreational boats.  The traffic created long waits at bridge openings.  Winds were mild today and should be stronger tomorrow.

By 7:00pm  Team B&B had passed under/through 8 bridges and covered about 63 miles (55nm) since leaving Key Largo at 7:30am.   63miles in 11.5hours is about 5.5miles per hour.   At 7:00pm they anchored on a small island aside the ICW with the intent of resting during the light winds and sailing again when the winds strenghten in the early morning.  SOS and SB said they found the light winds, heavy traffic, and frequent bridges frustrating.  They are still in racing mode and trying to make fast progress.

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Plywood Boat Plans | GF 42 TRIMARAN

Plywood Boat Plans



One of the most improbable projects around designed by a trendy Architect  Greg Lynn that normally designs anything but boats in association with Courouble Design, a California Naval design firm, without experience in multihulls and with a short experience in fast monohulls.

I would not have looked at it twice if I had not looked at the guys that are behind them: HDS the French specialists in structural analysis, calculation and design....http://www.hds-design.com/

So what does Lynn after all?: the conceptual project. I tried to find information about that but without success, I mean the boat program. I found something but it is in Latin! No kidding, here:  http://www.couroubledesign.com/?works=gf42-3

The shapes seem interesting if it will sail well or not it will be a bit as a mystery as its use. Thats a racing boat? a performance cruising boat? One thing is certain I am curious about it and about its sailing potential. The boat is already on the water and it should not take long to know how it sails. Heres a video with the boat being towed.

DSC 6369 from Greg Lynn FORM on Vimeo.

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Boat Plans Canada | RR NASTY NIGHT WITH BIG SEAS AND AN OLD MAN LEADS!!!!

Boat Plans Canada



When Loick Peyron, now a 55 year-old-man, beat with his team, the Cammas record of the absolute fastest circumnavigation, I thought "Great sailor, he is old but he does not need to make efforts, he is a Maestro running a team and damn good at that." Then he started fiddling around with the most radical racing dinghy, the Moth and after a while he said that was fun and that he was going to enter the World Championship!!!! He did not run among the first but left some behind...and we are talking not about club racing but about a World championship where the best Moth sailors were.

I thought that his serious racing days were over and that now he was going to take a "student" like Desjoyeux had made with François Gabart, that he was going to pass his vast knowledge to the next generation and the same thought probably the sponsors because he could not find a competitive boat for this race, that is in what regards multihulls the more important race and is only raced every four years....and then surprise, Armel LeCleach , the skipper of Banque Populaire that was training for this race like a mad man hurt himself badly on an arm and the boat needed a new skipper at the last minute. 
There are only a few that could solo sail fast one of these monsters  and after some hesitations Armel and Banque Popular asked if the old sailor wanted and was ready for making another race at top level with a top boat..... and he said yes. I confess that I was not expecting much more than a nice race: the big trimaran is a monster of power, terribly physical and Loick is not a young athlete anymore, but an aging man and this time he is not only the Maestro, but the Maestro and the entire band since he is alone on that enormous boat. surely he cannot run that monster at 100% or that was what I thought and curiously I think Armel was also a little worried. He said to him just before the race: "..  be careful because this first night will not be easy. Getting out of the Channel the conditions will deteriorate and it will be very complicated. He needs to be carefula and not do anything silly, do not break anything."



But the old man is probably already a bit deaf : He started like a bullet and with a boat that is not the biggest neither the fastest, soon was leading the race and not just for a while, all night long (a terrible one with huge seas) and keeps leading, taking advantage of his vast experience with bad weather.
Chapeau Monsieur :-), I am convinced, you are a young man in disguise and an incredible sailor. I dont understand how you can manage that at 55 years of age, but facts are facts and you are beating all the young boys and their bigger boats. My admiration for you is simply HUGE!!!

Alessandro dans le gros temps ! by routedurhum

Regarding the conditions on the race some comments made for some of the skippers racing and these are some of the best sailors around used to bad weather so if they say it is bad, you can believe it ;-)
Lalou Roucayrol - Arkema Aquitaine (Multi50) 
" We have very strong conditions. The wind begins to shift a little and the seas are terrible. Now there is a little less wind but I had peaks at 40 knots. There are big gusts in these squalls. It is difficult. 
"Miranda Merron a lady racing a 40class racer puts it with more humour: Foul night, zero visibilty once the driving rain started, 35 knots or so for a while. Pretty big sea state too, but luckily it was dark, as the waves which revealed themselves at dawn around Ushant were huge - and occasionally breaking - clipped on in the cockpit AND arms around the winch to stay on board - not nice. 
Any maneuver is physically grueling." admitted Spindrifts Yann Guichard at 1000hrs this morning. He was looking forwards to his first micro-nap of 15 minutes and he aims to get some more through today.
Sébastien Jossse on Edmond de Rothschild, the first of the Multi70s said:"The boat is making ??impressive jumps and we both suffer with every passing wave, I feel like the boat will break up. 
And it does not only seem that the boats are breaking as some boats are really breaking: These are breaking boat conditions at the speed they go.
Loïc Fequet – Maitre Jacques (Multi50) "When we were in big waves, the starboard float broke in front of the crossbeam. I do not know how. There was 28-29 knots so I did not go out to examine it but I can see that it is damaged the same as last year."

On class 40 several guys had to give up with problems, among them Bertrand Delesne (Teamwork40)  and the Italian Giancarlo Pedote but they just turned around, not as bad the Multy50 Royan that lost the mast or Angoulevant and Marc Lepesqueux that lost their keels. Also bad luck for one of the favorites on a big trimaran, Thomas Coville that was hit by a cargo and heavily damaged one of the hulls (amas). That was not all. A rudder damaged, collisions with buoys and other accidents made for a very hard night for all and even harder for some that had to abandon the race. Everybody is well and thats the most important.
Premier jour de course sur la Route du Rhum by routedurhum

Regarding the race itself it has been fantastic; upwind sailing and very hard sea conditions allowed the fastest smaller Open 60 monohulls to mingle with the giant trimarans for a while and even now most of the Muli50 trimarans are behind most of the Open60 and some even racing among the 40class racers that show once more that when the weather is rough they can go very fast. On the Multi 50 , that are very tricky boats to sail in bad weather conditions, ahead of the open 60, only two, the best, Le Blevec and Le Roux. Lets see if they can maintain the boats in one piece and the right side up. They are making a hell of a race as well as the first on the Open 60 that is led by the  winner of the last Vendee Globe, François Gabart. On Class 40 there is a big fight, as usual. Rogues is leading but is rival Pella is not far away neither Kito de Pavan.

But most of all I want to see if the old guy that is leading is able to maintain that crazy rhythm for the rest of the race and if the weather and sea condition will allow him not to be beaten by the bigger and faster boats. He needs a hard race to have a chance to win...and at least on the next days that will be so: From head winds to light and strong winds there will be a bit of all, including nasty seas.

What a race !!!!!! 

You can follow here;
http://www.routedurhum.com/en/s02_corporate/s02p08_cartographie.php
http://www.routedurhum.com/en/s01_home/s01p01_home.php


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Boat Plans Nz | 2015 SOME OF THE BEST SAILING IMAGES

Boat Plans Nz




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Selasa, 29 Maret 2016

Wooden Boat Plans Australia | wingtips

Wooden Boat Plans Australia


Ok so i have been slack. I still dont even have a mould for the new hull or even a block or foam. absolutely no progress there. the 3d file is router-ready but thats about it. Had a few projects that took over and now that theyre done im back at uni and so progress i fear will be slow. 

anyway ive been still tinkering with the blue boat - broke the gantry and it was off the water for a while and now its fixed back up again, a truly crap repair job later. one of the things i did was redistribute some area between the foils, just for the sake of an experiment. so i cut 100mm off the rudder span and added that to the centreboard, in the form of these wingtips. 

 Everyone i talk to says "wingtips are tricky, you need to do 3d analysis and work out the nature of the vortex at the design speeds etc." Anyway i pretty much ignored the advice of everone who knew what they were talking about and just designed some in rhino that looked good, cut them out, took a mould etc. I think they came up pretty good, the foil sections are pretty accurate at least. and they seem to work too, subject to a bit more testing, two things have happened; the boat launches much better and at lower speeds, and the hum that i used to have is gone. also there is no noticeable loss in stability from a smaller rudder (550 span i think) and it all feels smoother, and the boat want to go straighter. i could be kidding myself about that last bit. foiling manoeuvres were easier. also i have a new wand which i reckon is my best one so far, with a paddle about 200mm from a very flexy tip. If i do anything else i may want to extend the flap onto the wingtip, i dont seem to have quite as much response.

anyway heres a pic of my wingtip, if anyone wants one for their old and shit square foil let me know and ill make you a pair of blanks, im keen for another opinion. chord is like 115mm or so.



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Pontoon Boat Plans | the coffee conundrum

Pontoon Boat Plans


This might brighten your day, how past acts can tell you a lot about a man, and a very good cause I really hope some Boat Bits readers will support...

Why is it your propane bottle always runs out before your first cup of coffee rather than after?

One nice part of changing propane bottles this morning was the big charter cat anchored on top of us fired up its engines, picked up their anchor and left...

Maybe they didnt like the music from the Ukrainian Punk Polka band Ive been playing, though I will admit that pain threshold loud accordions, heavy distortion, and Black Flag (just imagine a Russian Henry Rollins on speed) covers are, at best, an acquired taste so not really everyones cup of tea.

Anyway, I mention the cats leaving not because of conflicting musical tastes but that I was actually shocked to see just how little scope they had out. It appeared that, at most, they had all of 45 of chain out in fifteen feet of water which is just frelling nuts for a 70+ foot cat with Godzilla-sized windage and very little draft.

In hindsight I should have been a lot more worried...

That said, of the five most common mistakes in anchoring I see played out all the time, insufficient scope is most certainly number one with a bullet. So, not exactly all that surprising when you think about it.

Listening to Les Rita Mitsouko

So it goes...

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Wooden Boat Plans Australia | well yeah but Im a happy idiot

Wooden Boat Plans Australia


Some bad news on the snow/water front in California, Yowza, and maybe its all just too fucked up to fix...

Someone wrote to me the other day to point out that boats were complicated/expensive affairs and that my suggesting that they could be any other way was simply idiotic.

Over the course of this blog experiment I have come to the conclusion that, at best, selling or promoting simplicity and sustainability as an alternative to the consumerist led status quo was something of an idiotic pasttime... So yeah, Ill admit to being something of an idiot.

For those like minded idiots who read this blog on a regular basis I highly recommend picking up the current excellent issue of WoodenBoat as there is a great article entitled "A Sound Boat and Simple Living" youll want to read.


Oh yeah, there is also a neat cruising design concept from the dynamic duo of  McGowan & Schacht that is well worth perusing...

Listening to the Idiot Bastard Band (because its what we happy idots do)

So it goes...

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Boat Plans Arch Davis | This would make sense in your pocket

Boat Plans Arch Davis


Dick Dorworth talking about a book of interest, in the "white and wealthy" department, and someone making a lot of sense...

This...



 ...is just very smart

Listening to Jerry Jeff Walker

So it goes...

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Dinghy Boat Plans | Good news bad news

Dinghy Boat Plans


L,G, & M with a bit of RCN Dazzle, a comic strip worth reading, and about the bad side of desalination watermaking...

Some bad news regarding our French friend Yann and SKROWL.


The good news is that Yann is OK and already thinking of the next boat...

Listening to Giant Panda Guerilla Dub Squad

So it goes...





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Boat Plans Australia | SYDNEY HOBART 2013 COMANCHE LEADS

Boat Plans Australia




What a smocking start!!! With plenty wind and on a beam reach there is no faster boat than Comanche, thats for sure...but now they have plenty upwind ahead and some heavy seas...and Wild Oats is not far away. It is going to be very interesting :-)
A pity the stone age tracker :-(
http://www.rolexsydneyhobart.com/tracker/

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Boat Designs And Plans | Just kinda neat

Boat Designs And Plans


David Simon gets it so right, a little ray of hope, and a bit of happy dancing...


Scotch Bright Board Art - Surf Sufficient from www.KORDUROY.tv on Vimeo.

Listening to a whole lot of Red Rhodes

So it goes...

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Boat Plans Aluminium | Where to get Classic wooden boat plans zephyr

Boat Plans Aluminium


Old Boats

Old Boats

Wooden Runabout Boat Plans

Wooden Runabout Boat Plans

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Plywood Boat Plans | Wingbar corners foil strut Part 5

Plywood Boat Plans


Two of the more complicated components were always going to be the bladder moulded wingbar corners and the centreboard strut. I put off starting them for as long as I could, but at some point I needed them to progress so I had a coffee and started working out what to do.

I did a bit of research on the web on bladder moulds, and found this guy to be quite helpful. Im sure there are other similar vids but by the time youve watched those, youll probably have gained all you can and then you have to do an experiment. I had two tests with cheaper materials before biting the bullet and laying up the first part. The first test was pretty hopeless, but by the third attempt I had it down.

 The moulds I had finished and prepped earlier, and worked pretty well but in hindsight they could have been stronger to take the fairly serious pressure that they get put under. On one, the MDF split at the join where the two thicknesses of wood had been laminated together, and created a bit of a bump in the finished part. MDF is ok, but probably use a single thickness or glue the sheets together with something better than PVA!

I made bladders as shown in the video, with a soldering iron ground flat at the tip. I went through half a dozen before I got one that would go the distance. I used black builders plastic, but something more elastic would have given a bit of margin for error - it was too thick and would split before it would stretch. Making it quite oversize seemed to help, with the final size being almost twice the circumference and 100mm longer than the mould. I used a barbed Nitto fitting that plugged straight into the compresser and sealed it to the bladder with a big rubber band as in the vid. A bit of plumbers tape helped, tacky tape was surprisingly useless under positive pressure.

I laid up the tubes so that the carbon in one half was about flush with the seam, and the other half had a 10mm overlap on both sides. That seemed to make it easier to get the bladder in - deflated with the vacuum pump - and then get the carbon to seat cleanly onto the other half when closing the mould. Once closed, I found it could take 40psi without too much drama, and I just left it like that until it cured. Sometimes there would be a slow leak, and the compresser would just cycle as required. Thats not ideal, and its worth getting a good seal.

Its surprising how much more compact the laminate is when cured at 40psi (2.75 atmospheres) compared to under vacuum. The corners came out at about 460g each, but considering how much carbon was in them, that translated to a resin ratio of about 30 - 35% which was on the money I reckon. They are about as bullet proof as I could hope to build. Its a great process.

The two test runs and the finished product

Making the plastic bladder with the soldering iron, baking paper and template

The two halves pre-bladder

The bladder deflated and held in a bundle with blu-tac. With such a thick laminate it was quite difficult to get it to all sit down long enough to close the mould.

The mould closed and under pressure, with resin oozing out of it

The centreboard was fairly straightforward by comparison, the only difficulties being the meaty layup and the carbon pultrusion that needed to go down the middle. I used standard modulus carbon even though there was some IM available from CG, only because I already had it lying around. I reasoned that the foil section is quite thick at the hull intersection, and that it should be inherently quite stiff, but at the end of the day you cant go wrong with higher modulus material. Next time.

When laying up, I added some extra laminates to build up a flat section for the pultrusion to seat onto. That was all bagged down and in a second step I closed the mould with glue and foaming epoxy inside and let the excess foam spew out a couple of holes. The idea was that as the foam expanded, it pressed the glue into the joints. It seems to have worked, though its a bit heavier than it could have been - at 250kg/m3 fully expanded, the foaming epoxy isnt as light as a milled foam core, but it is convenient. The whole thing went into the oven for a ~12 hour post cure.


Making the cutting template from aluminium foil

Cutting out the carbon 


Under Vacuum




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