Hi,
Welcome to our monthly Newsletter. This month you will find :
1. OFFICE NEWS.
2. ADDITIONS TO THE WEB PAGES
3. CARTOON SECTION.
4. CURRENT SPECIALS.
5. QUESTIONS ANSWERED.
1. OFFICE NEWS
Visitors and activities over the past month have made the month fly
by. First we were honoured to have a visit Rolf and
Deborah off 'Northern Lights', well know to cruisers in Rolfs home
area of Scandinavia, and recipricants of the Blue Water Cruising
Medal in 1984 for their cruise from 80 deg north to 75 deg
south. Their book 'Northern Lights' has some of the most spectacular
cruising photography ever. Although not a Roberts design, their
boat was built by META in France in 1972 and is the perfect example
of how a steel boat will last with a caring owner. It is still in
perfect condition. Another visitor was one of the principles of
Edensaw, the speciality timber suppliers in the North West, USA.
Charlie is cruising with his family along the East Coast of
Australia. At the end of the month we took part in a one day Spray
regatta on Morton Bay. Starting at 7.30 am and finishing a 11.00 pm
it was a hugely successful day. We have posted some shots of the
boats and the sailing. Once again I was criticised by my other half
for only taking pictures of boats and not the participants.
2. ADDITIONS TO THE WEB PAGES
This month we have added pictures of a steel
Coastworker 30 full displacement vessel which was launched in May. This is a
truly great looking job and a credit to the builder. We also added a
page of pictures of the
Spray
Regatta as mentioned above. I am sorry but you will all
have to wait a little longer to see shots of the WR 40 and the WR 44
on sea trials as our video capture card has collapsed which is the
equipment that takes digital still shots off of analogue video's.
Also, photo's of the
pram
dinghy, full size patterns of which come with every set of plans
sold, have been added to the top of the sailing section.
4. MONTHLY SPECIALS
Specials this month are the study plans and/or full plans and patterns
for the Waverunner 44. Detailed plans come for this design to be
built in either steel, fibreglass or wood epoxy.
Our book special this month is 'Seaworthiness. The Forgotten Factor'
=. This is an important subject for all those contemplating building
a sailing vessel. More information on both these specials is
available on our
Specials
page.
5. QUESTIONS ANSWERED.
Following are a few answers to questions that have been asked
throughout the month that may be of interest. These also show the
type and scope of the questions we are asked each month and this is
what we are here for. Not only to answer questions directly but to
encourage and help in any way we can.
*******************************************************************
The following email was kindly sent by Jim who
is building a radius chine R 345 in Australia. The prices quoted are
in Australian dollars.
Dear Phil;
Just a quick run down on costs of materials to date for
Roberts 345 for anybody interested:
1st steel order
(includes frame,solid webs, strongback, bracing, longitudinals)
$ 800
Forming (5 frame
circles @ $30 each. For radius section framing) $
150
2nd steel order
(includes 3mm plate, 6mm plate) $2000
Forming(8 3mm x 1200 x 2400 @ $30. For radius section plating)
$ 320
Sandblasting/priming (plate/longitudinals @ $11.50/m
$1900
Primer/thinner(altex 504 @13.00/ltr)
$ 550
Total $5770
*******************************************************************
Advising on timber varieties and grades is one
of the hardest things that we do and often we cannot give a categorical
answer. Jarrah is a timber that occurs in one particular spots in
the world, the extreme South West corner of Western Australia. The
problem is that there are hundreds of such areas growing a
particular species through out this world that it is nearly
imposable to know them all. The best advise is that when building a
vessel with a local timber look at other vessels in the area, ask
local boatbuilders and timber merchants and check where they
have used the timber. We do help where we can and do have some
knowledge of many timbers outside the normal, common, worldwide
boatbuilding timber species but not by any means all
of them.
Dear Sir,
I recently purchased a copy of the plans for a wood/epoxy
version
of the Wave Runner 24 model (Plan no. 24/188). I have finished
the
strongback and are about to start on the frames. I was hoping
that you would
be able to help me out with the following questions;
1) Is jarrah a suitable building material for frames? It is
not
mentioned in the 'Timber for boat building' sheet sent with
the plans. Is
this wood also compatible with WEST system epoxy resin?
2) Much of the timber that is mentioned in the suitable
'timbers for
boat building' sheet are available as RECYCLED wood ie. often
machined into
new sizes etc. Assuming this wood has the correct moisture
content would it
be suitable for boat building or has its previous uses likely
to have
already caused significant fatigue etc.?
3) The cheapest source of marine ply (for the skin, transom
etc.) that
I have found is hoop pine AA-A bond to AS2272, made by
Pearsons Plywood and
Panel Products. Is this suitable and do you have any knowledge
of the
quality of this companies products?
Thanks for your time.
Regards Mick
Dear Mick,
Good to hear that you have started.
1) There is no problems with Jarrah as frames. It is not an easy
wood to
work and does blunt tools. It is also heavy and very prone to
warping. It does
have excellent rot resistance which is why once upon a time all
the full displacement Cray
boats in WA were planked in this wood before the industry moved
onto high speed alloy
vessels. I do not know how suitable it is when used with WEST
system
epoxies. The WA forestry Department will most likely have
information on
this as well as other species unique to the south west of WA.
2) There is no problems with using recycled timbers and in many
cases they
are preferred due to their aging. A visual check for splitting
or rot of any description should
be undertaken when purchasing second hand lumber just as it
should when purchasing new lengths.
3) I do not have any knowledge of the company 'Pearsons Plywood
and Panel
Products' however your description of the ply grade indicates
that you should be
able to use it for all applications in the building of your WR
24.
Yours
Phil
*******************************************************************
Hi Folks!
I received my study plans
for the Tom Thumb 26' . Can you tell me what alloy is specified
for steel construction? I' m trying to begin costing the hull
construction based on the bill of materials in the study plans.
Also, do you have any
feed-back from other builders on their cost to build the hull?
Best Regards, Dennis
Dear Dennis,
Any low carbon mild steel would be suitable for building the Tom
Thumb 26. This is the type of steel most commonly found at all
steel suppliers. The grades AISI-SAE1010 through to 1023 are all
suitable and are available everywhere. There are two special
grades of carbon steel which are used for boats when built to
specific society Classification requirements (e.g. Lloyds A1+,
etc). IN the USA these are ABS (American Bureau of Shipping)
grade A steel and ASTM A36. These two steels grades are
generally not available off the shelf unless you were in a large
steel boatbuilding area and for normal owner builder use, the
AISI-SAE grade steel mentioned above is perfectly acceptable for
the TT26
Yours Phil