10 rater class in the USA - Page 5 - RC Groups
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Feb 01, 2017, 10:32 PM
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Seeing as both my boats are deck stepped rigs, shrouds are mandatory. Seems like a very stiff rig, guessing that works well. Wonder how uniform the bend characteristics are with stiffness varying so much at the overlap spots from the rest of the non over lapped sections. Ryan
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Feb 04, 2017, 08:45 PM
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Some interesting 10 rater info.

A short update to the article published this time last year, on 10rater
development in Australia, based primarily around the activities at the
Nationals, held in January. I have taken the lazy way out and put this report in
front of the 2013 edition, rather than update the report from last year.
The Boats
1 - TRANCE
Obviously we need to start with Trance, the new 10rater designed by Brad Gibson and built and
sailed by Scott Condie, who won the 2013 Nationals sailing an Aero. Brad has kindly put together his
experiences and thoughts on the 10rater class that have led to the Trance.
“I borrowed Bill Wright's immaculately prepared NRWb to win the 2003 Nationals in WA and again in
2004 in VIC. From this, new boats were built by Bill to the deck level, and which I rigged and
completed for both Alan Bicknell and Maurice Fletcher in NSW, of which Maurice still sails today.
Working with Bill we looked at strengthening the boat’s lower rig performance through minimal
weight optimisation, shortening the foot of the lower jibs and a slight revision of rigs heights. A
pocket luff C rig in 2006 saw the boat dominate in these conditions at a NSW open water event at
Kogarah Bay that year reflecting its progress in lower rigs conditions without harming the boats
dominant light air performance.
“In 2004 I was handed a hull shell and a plan of a Frank Russell P3 by Chris Stokes and asked to
complete it for him. After some thought it was decided to go with the same fin and rudder sections
as used on the NRW as they were far superior to the thick sharp nosed sections then used on that
design, along with the significant stiffness advantage. The deck layout was similar to the plan and
incorporated more accurate mast adjustment and support through using Bantock deck blocks. For
the rigs I decided on 4, all set on Bantock tubes using compression goosenecks with adjustments that
could be made easily as per the Wright/Bantock rigs on the NRW and long used Marblehead setups,
which for some reason had taken quite a while to catch on in NSW in 10s. I completed the A Rig to
plan and then Chris built the lower rigs with my sails.
“When launched, the boat on it designed weight was less than flattering against the dominant NRW,
yet very strong in lower suits. After a few months sailing the boat was then altered to reduce weight
overall. The bulb came down to near 3.8kg, the fin shortened a little and a new larger modern aspect
profiled sail plan fitted. The result was a National’s win for Chris over the NRW's of Bill Wright and
Greg Willis at the 2007 event in QLD. Our work with this design can be attributed for bringing a
somewhat overlooked older boat up to speed and competitive again by using up to date solutions.
The successful P3 sailed in recent years by Owen Jarvis is also based on the Stokes boat which is still
being raced by Allan Roberts in NSW.
“The Aero. Working with Scott for his sail plans we believed the waterline length at test
measurement for the given displacement to be on the long side. Reports from Scott mentioning that
the design had a weak spot in light airs supported our initial thoughts on this. Quite simply, we
needed to reduce the waterline to a length that would give us sufficient sail area for light airs. Bulb
weight was reduced by 200g and sufficient sail was gained. No rocket science on that one but a
move that quickly took care of a perceived weakness in that design. It is testament to Steve's design
that the boat still performs so strongly in lower rig conditions to this day.
“I could add that I have duel rated many RM's in this time also for myself, including one with a clip
on bow and transom to place 2nd a point behind the NRW in a light air NSW championship, along
with adding a full area rig to place 3rd in the 2006 UK Nationals won by a prism in light airs in
London.
“Scott has done a fantastic job on the build of Trance, with it coming in lighter and just as strong as
anything we could compare it to by using the same wrap around method I used to build my BritPOP
and Grunge prototypes, a method I do credit David Creed with.”
Scott Condie with his 2014 championship-winning Trance
2 – BLADE 3
Glenn Dawson reports: “The Blade Mk3 turned in a terrific performance at the 2014 Nationals in
Melbourne, finishing in second place just 5 points off the winner. The biggest advantage of going to
Melbourne with the boat, was allowing Lincoln McDowell (the designer) to have a good look at the
boat in the water. As my boat is the first hull from the mould, and at that time the only one on the
water, Lincoln hadn’t seen how they went.
The Blade 3 which Glenn Dawson sailed to second place overall at this year’s Nationals
“Following the regatta, we had a discussion about some of the things that were needed to improve
the performance. The fin was left in Melbourne for the bulb to be moved, and a decision to amend
the sail plan was made. The boat was hobby horsing quite a lot when travelling upwind, as the
balance of the boat wasn’t right. Also, the boat would generate a lot of weather helm when coming
out of tacks. The fairly large roach on the mainsail tended to hook once the pressure came off it, and
generate the helm. Once the sail was back under pressure, the balance corrected and it was neutral
to sail. So the plan is for a larger jib, less roach in the main and a re-configured fin.
“So far, Dave Thomas has altered the position of the bulb on the fin and the jib has been lowered
further towards the deck. The new sails are a work in progress. The first Ten Rater regatta back
home was a successful outing, with 11 heat wins from 20 races. The boat certainly looks better in the
water, and sails very smoothly, without the fore-aft hobby horsing it had before.
“The emergence of pocket-luff sails is something I will need to investigate more closely, as they are
certainly proving to be fast”.
Glenn Dawson and his Blade 3
3 – DIAMOND
Yes – Graham Bantock’s Diamond continues to be the benchmark at the front of the fleet and made
up almost 50% of the entry list for the 2014 Nationals in Australia. Phil Page sailing a Diamond
finished 3rd overall in 2014, after finishing 2nd overall the previous year. Jeff Green and Owen Jarvis
were 4th and 5th overall, also sailing Diamonds.
Owen Jarvis leading with his Diamond, from another Diamond and Scott’s Trance
Two Diamonds; Owen Jarvis (5th overall) just ahead of Phil Page (3rd overall)
The Aero 3 update
Steve Sedgmen, the designer, reports that the design has been competing well throughout 2013
with many wins and podium finishes in various events such as the 10R GP rounds and the NSW and
ACT state titles. A few boats have been sold in NSW, Qld and WA as well as one going to the UK
which won its maiden event over there.
Steve is about to trial a new keel design and has been refining sails and rigs. See the next section for
more details
Selwyn’s Aero 3 (6th overall) just behind Jeff Green’s Diamond which finished 4th overall. The
Diamond has its #2 rig up, whilst the Aero 3 has its A2 rig up, a bit bigger than the #B rig and smaller
and more controllable than the A rig
Steve and Selwyn Holland have been separately experimenting with sail design, mainly centred on
the luff pocket style which appears to be more efficient. Steve's are very fast and proving a good
benchmark for further experiments. Selwyn did a lot of trialing against another Aero 3 at his club
before coming to the Nationals in January and has made a number of changes. The other one had
Steve's sails on it. Selwyn reports: “ What I found in wind tests was that my A2 (bigger than the #2)
was more powerful than the A above 10 k/h. On the first day of the Nationals I started with it and
the first 2 races were great (should have been 2nd and then 1st, but got taken out in the first race)
but had winch problems after that then trapped in lighter breeze with the wrong rig in the boat.”
SAIL DEVELOPMENT
More from Selwyn: “I have been experimenting with two piece ‘wrap around’ pocket sails using
different varieties of film over the last few months. After an interesting start it all seems to be
coming together now particularly my understanding of how to shape the sail using the ram, backstay
etc.. I am also experimenting with a wrap around jib. Each time I sail the wrap around mainsail it
seems to get a bit faster. Except for drifters (where I think luff tie sails are superior), they certainly
are showing some very encouraging potential in both pointing and speed.... enough to keep me
going. For those who can make sails this is an interesting adventure. These sails like a bit of depth to
heal and go. A big advantage is if you use sticky back to attach the end of the wrap around bit, you
can unstick at will and change the configuration in a few minutes and have a new sail shape. They
are relatively easy to make from rudimentary materials and can be constructed on a flat table
anywhere. I mostly use a straight luff which will become obvious when you eventually hang it on the
mast.
Selwyn Holland with his Aero 3 and a suit of Sedmen sails, using the wrap around mainsail
constructed with a single sheet of material behind the pocket
“I was very encouraged at my relative speed at the Nationals, considering they were still in their
early stage of development. I feel the current crop are now faster and point better. But they still
need a tad of breeze to set and I won’t be using them in drifters from here on.”
An early image of Selwyn’s first prototype with the wrap around jib.
Frank Russell has also been experimenting with pocket luffs. Frank has been using them for a few
years now and they are a totally different from the Bantock style sails. Frank tells us “I feel they set
better with a cleaner shape and don’t slow the boat during tacking as they don’t flap. The photo
attached here is the very first sail of the type on a P4 and has a battened pocket and full length
battens. In total 15 battens. The type is still undergoing development and I have started
experimenting with a pocket jib on my P5 to see if a rounder luff profile is faster or slower”.
Above: A Frank Russell pocket luff mainsail on a Phoenix 4
What else is happening? The P5 and GothiX – Frank Russell
Both photos on this page are of the GothiX 10r
The P5 is still being built, in small numbers and there will be boats sailing in Australia in 2014. The P5
is also being built from plans in China and Germany. The GothiX is part of a series of free plans based
on the Goth IOM shape and is available on Frank’s website. The only other free 10r plan currently
available is the Bantock IONA design which is quite old now. The Gothix is a free plan but is still a
serious racing 10r. Boats are being built most notably in Germany. There is a plug in Newcastle and
boats will be sailing in NSW this year. Frank expects the boats under construction to be sailing soon.
Above: A new GothiX hull built in Germany from the plans on Frank’s website
Footnote
Austin Lakes in WA is the venue for the 2015 Nationals. It is a new lake near Mandurah, some 50
minutes drive south of Perth, and offers good racing for all wind directions.
Above and below: 10rs at Austin Lakes. Number 86 is a Carbonic Boats Rubicon design
Glenn Dawson’s Blade 3 ahead of Jeff Green’s Diamond
We’ll do another update on 10 rater development as and when there is more to report. Something
along the lines of the pics below maybe. Until then . . .
Ian Holt – April 2014 – iholtkss@gmail.com
previously . . . 10 Raters in Australia –
the original article
A brief summary of some of the activities and developments in the
class
Index
1 2013 Australian Nationals
2 Some designs of interest
o Aero2
o Phoenix 5
o Blade
o Raptor V
o Other Designs
o “Foreign” Designs
3 Bit of history
4 Perth
5 Other Side of Australia
6 Crazy Ideas section
7 Some contact details
8 One last thought for you
Disclaimer; this little article is by no means a comprehensive overview of all activities. I
am based in WA and do not travel to East Coast events, where I know the class is stronger.
However, hopefully there is enough information here to enable you to find out more
information where I have not covered the boat that interests you. The links provided
through the article and at the end are specifically there to assist Europeans find supplies
not readily available in the UK or close by.
Credits: a number of builders and designers have contributed to this article and I would
like to thank Stephen Sedgman, Frank Russell, Lincoln McDowell, Cameron Sloey, Roger
Paul, Jeff Byerley, Glenn Dawson, Dave Thomas and Dave Creed for their frank and open
descriptions of their boats and ideas. The photos from the 2013 Australian Nationals are a
compilation taken by John McLachlan and Bruce Mathers
March 2013 Ian Holt
1 2013 Australian Nationals
So, starting with the Nationals this year, here are details of the boats entered, and their
results
FullName Sail Design Overall
position Points
# race
wins
Worst
discard
Scott Condie 6 Aero 2 1 38.0 11 7
Phil Page 50 Diamond 2 55.0 10 23
Frank Russell 5 Phoenix 5 3 85.0 2 9
Owen Jarvis 82 Phoenix 3 4 88.0 10
Jeff Byerley 14 Dreadnought 5 100.8 2 14
Ian Hayden 19 Diamond 6 148.0
Allen Roberts 69 P3 7 170.0
John Musgrave 77 Muzzie 8 179.0
Michael Austin 35 Paterson 9 180.9 1
Selwyn Holland 56 Aero 1 10 188.0
Phil Lawson 90 Diamond 11 192.0
Ross Capper 52 RC 12 267.7
Adrian Banwell 47 JAB 13 276.0
Alex Toomey 79 Mule 14 278.0
Ben Downey 164 P4 15 284.8
Jeffrey Watt 811 Paterson 16 290.8
Chris Percy 68 muzzi 17 329.0
Garry Bromley 41 Peter Cole 18 336.0
Rob White 99 Phonix 3 19 368.0
Roger Margot 78 Muzzie 20 378.0
Graham Sherring 21 Phonix 3 21 394.0
Andrew Sands 43 NRW 10a 22 404.0
An almost random selection of photos from the Nationals is included overleaf.
Photo from ARYA Website – John McLachlan
Photo from ARYA Website - John McLachlan
Aero 2 leading Dreadnought leading Phoenix 5. Photo from ARYA Website - John McLachlan
JAB. Photo from ARYA Website – Bruce Mathers
Australian Nationals 2013
Phoenix 5 and a Diamond, 3rd and 2nd overall respectively. Photo from ARYA Website - John
McLachlan
Aero 2. Photo from ARYA Website – Bruce Mathers
2 Some designs of interest
AERO 2 and AERO 3 - Both designed and built by Stephen Sedgman
The Aero 2 is the design Scott Condie won the nationals with but there is also an Aero 3 design
which is performing well (current A.C.T champion, 3rd N.S.W State Titles). Both designs utilise
the same deck layout, the main difference being the Aero 3 having more rocker and therefore
a shorter waterline. Another noticeable difference is the very flat aft planing area on the Aero
3. As far as performance goes there doesn’t appear to be a lot in it with perhaps the A2
slightly better off the wind and the A3 a touch quicker up wind.
Aero 2 – Nationals winner 2013. Photo from ARYA Website – Bruce Mathers
The Aero 2 has a waterline of 1268mm and the Aero 3 1211mm. Both have been measured
with a bulb weight of 3.75 kg and close to max draft. Stephen thinks that a bulb weight of
around 3.55 kg would be better.
Stephen is selling the boats either as a kit or partially completed. A partially completed boat
includes a joined hull/deck with keel case , mast tube, mainsheet post tube , rudder tube ,
mast ram and eyebolt points installed with the boat being almost ready for paint. Also
included will be a fin and rudder with titanium 4mm diameter stock and a rig plan for rigs A,
B, C, and D. Price for this option is not finalised but it will be somewhere around the $2000
mark. Delivery at the moment is around 3 to 4 weeks.
All the mouldings for both Aeros utilise CNC technology and are vacuum or compression
moulded in carbon fibre epoxy.
The new Aero 3
Stephen can be contacted at sksedgmen@grapevine.com.au though he does not currently
have any experience of exporting hulls overseas. You might need to twist his arm if you want
it exported!
Phoenix 5 – Frank Russell
Phoenix 5
The hull shape of the Phoenix 5 (P5) is similar to the P3, but is more powerful. It has less
topside flair and is flatter on the bottom and has a wider stern. It is short on the waterline -
1200mm - carrying 4–4.2kg ballast, and is designed for moderate to strong winds but is still
quick in the light stuff too.
The P5 hull and foredeck moulds are almost ready and Frank intends starting doing moldings
non-vacuum bagged, with vacuumed foam sandwich decks and then try hulls as well. No
plans for a specific fin at this stage, Frank is specifying the Tony O fin (http://ultraliteradioyachting.
net/ ), but he will be doing rudders.
Frank has additional info on his website and will add more as progress is made. He will be
supplying boats from bare hull to completed, available about April this year. Currently there
is one order for a completed boat which he will have to finish before any other assembled
boats are started.
Phoenix 5 hull mould
Frank will also be putting out the hull lines for the P5 in about a year or so. Although he is not
yet selling plans for the P5 he has had some enquiries from Oz, China and Germany and has
sold basic drawings. If anyone overseas wants a set of lines they are $40.
Frank uses 3.75kg on his P4. He started with 3.8kg on the P5 but the waterline was under
1200mm so he changed up to 4kg to achieve a 1200mm waterline. The boat is much faster,
tacks better, has heaps of power upwind. It can be bit sluggish sometimes but can also be
very fast. The production boats will be lighter construction which will allow up to 4.2kg. The
Diamond's strength is upwind and it carries a lot of lead, so the P5 is an experiment in heavier
weight ballasts. The P5 waterline is narrow, probably about the same as the Diamond, with
hull flair, but not as much as the P3. Frank is using a full length fin so has around 8% more
righting moment than the Diamond. So far Frank is pleased, believing that the P5 is also faster
downwind.
A Phoenix 3 at Champion Lakes
Frank provides updates on his facebook page:
http://www.facebook.com/FrankRussellDesign
Blade – Lincoln McDowell
The winning design at the 2012 Nationals. Lincoln is a designer who is quite innovative. He
designs IOM's, M's and 10R's. He started in 10 raters after watching a couple of dual rated
Marbleheads out in front at a 10 rater National Championship. He thought that there ought
to be a big advantage in boat speed with the longer LWL, and started with a beamy 10R which
Patrick Parisienne sailed in the Nationals in Melbourne into 3rd place.
Glenn Dawson’s Blade
Lincoln never sits still with his designs for long, constantly coming up with new ideas to try.
The Blade was his second attempt at a Ten, and it has gone through a couple of minor
adjustments. Lincoln won the Ten Rater nationals with it in Hobart (15 months ago), but was
unable to defend his title this year, as he works offshore, and was at sea during the last
Nationals.
Glenn Dawson’s Blade (#76)
Lincoln is fortunate to have a terrific workshop on the boat he works on, as well as a good
relationship with Dave Thomas, who also has a great workshop, with lots of toys. He is very
computer literate, and designs his boats on the screen.
The Blade is very narrow, with LWL of 1233mm. There are soft chines in the aft 30% of the
hull. It is currently the only design to be seen in Perth with a skiff-style aft deck, permitting
the winch to be mounted low but have the drum above deck
Lincoln has a new design called "Prototype" out this year. This is a narrow design like the
Blade, but with some more volume in the bow and has tumblehome like some of the modern
One Meter designs.
Lincoln and Dave Thomas used to make moulds and Vacuum infuse the mouldings. They were
getting some great results but, with newer designs with tumblehome they started making
split moulds and joining two halves after moulding . But that proved difficult with the flat
hulls, getting a join nice etc, so now they CNC the plug, and mould hulls over them. With
careful wetting out and right peel ply they have found that only a short time is needed for
finishing the outside of the hulls.
Blade 3. Three of these have been built
Glen Kinsella’s Blade 3. Three of this design have been built. The owners are happy with
them, but Lincoln believes the design is too extreme
Lincoln’s new design - Prototype - is more conventional than Blade 3, being more like his Blitz
IOM. Lincoln tends to go for 3.6 to 3.8 kg for bulb weights.
With his narrow designs the bilges get square or hard bilge so that as hull heels the boat sinks
in the water getting the full waterline length. However, on the original Blade, the bow stayed
down too much and as gusts hit the boat it lost height. Lincoln was able to counter this on the
Blades he raced with rig tune. but the new one will be easier to sail for everyone even if not
100% tuned right. Well that is the plan . . .
Contact details:
Lincoln McDowell: lincolnjjj@hotmail.com
Dave Thomas (builder of the Blades): joscelle@bigpond.net.au
Raptor V – Cameron Sloey
RAPTOR V was designed by Stuart Friezer, a Naval Architect with whom Cameron has been
working for 10 years, building his high performance racing skiff designs. Cameron has
provided me with the following details:
“The plugs were built using computer technology and laser cut frames for accuracy. The
moulds were manufactured using an ATL Composite epoxy moulding resin and then post
cured in a computer controlled oven to reach the design properties to allow the mould to go
through a heating and cooling cycle without losing any structural properties. The
manufacturing process we decided on is called Vacuum Infusion. This method of construction
not only uses vacuum to consolidate the laminate but also draws the resin thru the laminate
thus eliminating any air voids that may be left with other manufacturing processes. I have
built boats up to 38 foot catamaran hulls using this manufacturing process. The product is
then post cured in our controlled environment so as the resin reaches its operating
parameters for strength and durability.
All design work has been carried out using computer programs specifically for the design of
sailing vessels. Our rig design has been developed by Gary Wogas, who has many years of
experience in the design and manufacture of all types of sailing vessels and he has used his
vast experience to design rigs for the boat. We have designed 5 rigs. Rigs 1 & 2 are stayed rigs,
the other rigs are free standing with pocket luff mainsails
At present we are currently building the first boat, We hope to have this boat sailing mid-
April.”
Length overall: 1623mm
Length waterline: 1230mm
Sail area: 1.02m2
Max beam: 190mm
Draft: 590mm
Displacement: 5.9kgs (approx.)
The hull features an AC-inspired double knuckle bow which helps get the best possible
underwater shape while minimising measured length. The aft bow knuckle is below the
waterline, the intention being to minimise wavemaking and give the bow some bite when
going to windward. The hull sections are flattish forward and more Veed aft. The V aft also
gives greater tracking while the flatter forward sections mean that the bow will turn easily.
The BWL amidships is almost full beam and this combined with a firm turn of the bilge will
give good initial stability, which is important for model yachts as their ability to accelerate is
just as important as speed. The Raptor V will soon be launched by “Stormwatch RC Yachts”
Contact details:
Cameron Sloey
P: 0420530086
E: cameron.sloey61@gmail.com
Gary Wogas
P: 0417469770
E: thewogas@gmail.com
First Raptor V in the mould
Raptor V – Flat aft sections
Raptor V: Not easy to see but there is a flat forefoot to the bow
Other Designs - Rubicon – Carbonic Boats
Chris Woods and Roger Paul here in Perth have been building the latest incarnation of the
Carbonic Boats Rubicon 10 Rater under license and have modified the design to include a
raised foredeck. This is another design with a long aft overhang; the waterline length should
be around 1080mm with an overall length of 1670mm, and 200mm beam.
The first 2 boats are getting close to completion and we’re expecting to see these on the
water in Perth soon. Both will have Jeff Green sails, with a conventional fractional rig, 60/40
main/jib area ratio. Depending on how these go, they may be taking orders for others!
Chris Woods email address; chdw@iinet.net.au
The Mk1, sailing in USA
Other Designs - JAB – a multi-chine design by Jeff Byerley at Mirage Yachts
Photo from ARYA Website – Bruce Mathers
Hasn’t been seen on the West coast so I cannot comment
Dreadnought - Photo from ARYA Website- Bruce Mathers
Also by Jeff Byerley is the Dreadnought Marblehead (similar concept this IOM design
Destroyer). Jeff raced the Dreadnought at the 2013 Nationals as a Marblehead and did not
have a full size rig due to lack of time. Jeff’s aim was to try and prove that a Marblehead could
hang in with the 10’s and believes he proved the point by finishing second to Scott on points
for the last day, in 5 – 14 knots of wind. Jeff felt the Dreadnought was as fast upwind as any
but suffered downwind with lack of sail area!.
Jeff will be producing a new 10 this year, (when he gets time), the design having been
completed for some time.
Contact: miragej@bigpond.com
“Foreign” Designs
Prizm and Diamond – Graham Bantock
Diamond
Yes I know, nothing to do with Australia, but have included here to help make this into a
compilation of all current modern designs. As the Prizm dominated in the early 2000s so the
Diamond has been the benchmark for the class in the past 5 years or so, and new designs are
usually compared to the Diamond, as indeed has happened when compiling this document.
Whilst Graham no longer produces the Prizm, I believe it can still be obtained through Marc
Pomarede in France. The Diamond can be sourced directly from Graham at Sailsetc.
And just in case you are one of the few people in this sport who is not aware of Graham
Bantock, the website you need to go to is www.sailsetc.com. This website has a wealth of
information about the development of the Diamond design
Above: Phil Page’s Diamond leading a race at this year’s Nationals – John McLachlan
Above: 99 and 97 are Prizms, 95 is a Diamond
Above; A Prizm with a Walicki rotating mast
Partner – Janusz Walicki
The Janus Walicki Partner 10rater is usually the one that you see on the shore with more
gizmoes on it than you would believe possible. Backstay adjustment, clew tensioning
adjustment and the famous “butterfly” that flicks the radial jib boom into the goosewing
position, they are a masterpiece in model technology. Refer to the History section for some
background here. Some of the Phoenix designs raced in Perth have Walicki fittings and
rotating masts
The web site for Walicki boats can be found here:
http://www.walickiboats.de/
Contact Janusz at
Janusz.Walicki@t-online.de
A Partner running downwind, with the radial boom goosewinged by the butterfly fitting
located on the hull just in front of the mast
Dave Creed 10 (there are 3 of these in Australia now)
A Creed leading from a Diamond at Champion Lakes
A big decision with the 10 rater design concept is whether to go for the fastest boat in a
straight line on a long course – which will result in a long hull that will take a while to
accelerate to top speed - or go for “squirty” boats with lots of stability to accelerate faster to
a lower top speed. Dave Creed has opted to go down the latter route.
Dave’s new 10 is a bit lighter than the Diamond and has a very “mobile centre of buoyancy”
(to use Dave’s own words) so is designed to accelerate well. The Diamond’s great strength is
that it becomes a very long" boat as it heels and the square stern comes into play but Dave’s
philosophy is that the lighter weight, allied with greater form stability to compensate for the
shorter length is the essence of lively performance – with a good downwind performance as
well coming from the lighter weight . It is designed to be OK on LWLs between 48 and 50
inches without upsetting hull balance.
Two views of the Creed 10rater hull shape
If you want a Creed 10, email Dave at: david.creed5@tiscali.co.uk
(and good luck, because you’ll have to get him to cancel all his orders for boring Lintel One
Metres first)
3 A bit of History
Some background info on other designs, supplied by Glenn Dawson who knows much more
about the local developments than I do!
Janusz's Ten Rater is called the Partner. He came to Perth in the mid-1990's to do some
development work, but that was on Marbleheads. The Partner was already in production at
that time. Janusz designed the Partner for the 10 Rater Worlds which were held at Barmera
(South Australia) in the early 1990s. Quick story about that - Janusz won many races, and was
trying to convince skippers that it was his boat that was superior - not necessarily his skills. In
one race, he rounded the windward mark in first place, set his sails (using his profile
adjustment), put his hand set on the ground and walked away from it. As his boat neared the
wing mark, he picked the transmitter up, gybed around the mark, re-set his sails and did the
same thing nearing the leeward mark. His only comment was "it won't turn the mark by itself".
He managed to get his usual increase in his lead, despite not touching the controls!
The R-10-6
Alan Robinson - a Perth Radio Sailing Club member, and ex-New Zealand America's Cup
Operations Manager - designed the R-10-4 and R-10-6 hulls. The R-10-6 was a downwind flyer
designed for the World Championships in Singapore in the late 1990's. Jeff Green sailed one
for many years, and a couple have found their way to the Eastern States and one to the
Netherlands. Alan has a R-10-8 on the drawing board, but never quite got around to building
one. Alan also designed a range of Marbleheads - M1,M3,M5 and M7. The M7 became the
Skalpel 2, which he gave to Janusz, who has sold them very successfully around the world for
the past 18 years.
The other Ten Rater which has had a great deal of success in Australia is the NRW10B,
designed by Billy Wright from Queensland. It is a real light wind flyer, and has won a couple
of National Championships. Rob Mews now owns that boat, but there are only a few of them
ever built. It has exceptionally long overhangs, and a massive sail area. It needs to come down
in sail area much earlier than most other Tens, but in capable hands, remains competitive.
Chris Stokes won the 2007 Nationals with a Phoenix 3, and He had a 3rd in the 2011 Nationals
and a win in the 2011 NSW State Championships with the NRW10B
4 Perth
Jackadder Lake, home of PRSC
We sail 10s at two clubs in Perth:
• Perth Radio Sailing Club (PRSC)
• Champion Lakes Radio Sailing (CLRS)
PRSC is just north of the Central Business District, at a park that has a decent sized lake. Very
pleasant location, but unfortunately it has trees on the bank that can play havoc with the sea
breeze that usually arrives around 2.00pm. And when it doesn’t rain, we suffer from islands
appearing in the middle of the lake…
CLRS is some 20 minutes south of Perth, located at the artificial lake created for the rowers.
Fortunately we don’t sail in the lanes but on the side where they launch some of the boats.
No trees in sight, but no grass either. Usually has a good breeze in the afternoons
Link to a 10r club race at Champion Lakes can be found here
http://www.youtube.com/watch?v=fbSfvfBq8Y&
list=UU0Olp6vZzdP4D2yPJ85jS1A&index=10&feature=plc p
Perth Radio Yacht club races:
10 raters Perth RC Model Yacht Club 3 Sept (3 min 55 sec)

and
10 raters at Perth 16 April.mpg (1 min 3 sec)

Two photos of Champion Lakes
Above. One of the two Creed 10s in Perth, to windward of Rob Mews’ NRW10B,
racing at Champion Lakes
From left; Creed (mine), NRW10B and Creed
Above; My Creed (right) next to a Diamond
Above and below: Perth Radio Sailing Club
One of the joys of Perth: Not many places have Pelicans and 10s mixing it
5 The other side of Australia
Selwyn Holland tells me that …. “we (meaning NSW skippers) have a strong class of mixed
10rs with sailors mostly prepared to travel to the various regattas up and down the coast of
NSW from Foster in the north to Sydney, Wollongong and Canberra. Our club (Wollongong
Model Yacht Club) has only recently entered the 10R sphere but now have an Aero, 4 new
Blades from Lincoln (made by Dave) and a locally built Graffito (Bantock design). Having a load
of fun building them up to being "bullet proof". Some have "commercial sails" but most have
owner designed and built sails (a lot of competent sailmakers in our club) that seem to be nice
and fast. After an initial battering from the weather over here in the last month, we are
looking forward to a big season learning the ropes. Steve Sedgmen's new design (Aero 3)
certainly goes very well and looks like a sensational all-round regatta boat. He also makes high
quality sails. “
6 Crazy Ideas section:
If you are still reading this article, then this part is dedicated to the experiments that have
been seen in Perth recently – mainly mine!!! Well I am writing this so you’ll have to suffer my
ideas and experiences here.
Dave Creed has some interesting views of model yacht designs. His thoughts are as follows:
“The rigs are very interesting: high aspect square top main, possibly a mastheaded jib, no
need to go too high if we lose the inefficient narrow triangle at the top of the main
Walcki’s rigs are wonderful things but very difficult to get right all the time and in my opinion
their Achilles heel is that they can’t twist the rotating mast anywhere near as much as
required, if they could set that rig right nobody would get near either his 10 or his M. One idea
we have is to use his mast the wrong way round, encased in a double luff sail to give the sharp
Leading Edge to the rig, and over-rotate the mast so at least it’s at the right angle near the
top of the rig where it really matters.
The deck of the boat is flat to allow a deck skimming rig, closing the gap almost entirely
between the sails and the deck surface The idea is to make the step from something that looks
like a fishing boat rig to something that looks like an aerodynamic device and it`s only the 10s
that provide this chance.”
So, with that background, my Dave Creed 10r started life with a masthead rig, with a curved
deck-sweeping main boom that had an adjustment for clew tension at the outboard end of
the boom. The rationale being:
• Masthead jib to give better flow round the mainsail
• Deck sweeping mainsail to get a “slot effect” at the bottom of the mainsail
My Dave Creed 10 as launched, with David Potter sails from the UK
The radial jib fitting that was installed 6 months later
Close-up of the deck sweeping mainsail
My Dave Creed 10 as launched – deck sweeping mainsail foot is visible
The ideas were good, and when the rig was set up correctly it was fast, but it was very difficult
to set up the leach twist in the jib for variable wind strengths. This was compounded by the
fact that the mast fits into a fixed tube in the hull, it cannot be raked and there is no mast
ram. Simple, but it hindered tuning a radical rig.
The next step was to try a radial jib boom, but retrofitting such a fitting to a boat is not easy,
and I failed to eliminate twist in the fitting, so every time a gust hit the rig, the deck flexed
and the jib leach tension eased far too much. In the bin….
The masthead rig was a good concept, but needed a tame sailmaker on the bank to make
adjustments to the sails between weekends to sort it out, plus the ability to rake the mast
until the correct set-up was established. Would I try it again? Yes, but would need more
adjustment for mast rake and bend..
Its first ever sail was with the B rig, here:
10 Rater Dave Creed Perth 1.mpg (4 min 53 sec)

A rig sailing;
Creed 10r A rig 27 August (2 min 6 sec)

… And now it has a conventional fractional rig on it from Bantock and goes just fine! The fixed
mast rake is not a problem as the rig allows mast bend to be controlled with the backstay,
something not possible withy the masthead rig
My Creed in its current set-up
More crazy ideas
I designed and built my own 10 last year, just for fun. Dave Creed’s design is excellent
in a breeze, it’s wider beam than other 10s, combined with a lighter bulb than most
(3.45kgs), works well in a breeze but it struggles in the really light stuff when both
chines sit in the water. So I decided to design a hull aimed at light winds that might
hang on when it blows. It ended up as an exercise in taking overhangs to the extreme:
A long stern overhang to increase waterline length when heeled, and a long bow
overhang to prevent nose-diving when going downhill in a breeze with too much sail
up, a common occurrence here, as the sea breeze frequently arrives just after we start
sailing and no one wants to change rigs!
My own design, Offbeat, built over a plug whilst my wife was out of the country! An exercise
in massive overhangs – it’s 181cm long!
The hull beam is narrow, but has a chine running from the transom to just forward of
the mast. The bow overhang creates a bluff entry at waterline, Having raced it so far
on two occasions it is fast in light winds and fast downwind in anything, but the boat
is too twitchy and does not track at all well upwind. Not sure why this is, but could be
linked to the bluff entry to the waterline at the bow, which results in too much
buoyancy forward when heeled, possibly the chine should have been extended to the
bow. Mark 2 is on the drawing board but won’t get built until my wife lets me back
into the garage….
Offbeat again. The bow-up attitude indicates it needs more weight in the bulb, but I am
reluctant to get the scissors out just yet
Fat Heads / Square tops
The IACC120 Class in Italy – Fat heads everywhere
The craze for square tops on mainsails has been a steady movement that has stemmed from
large racing multihulls that want to cram as much sail area onto a rig whilst keeping the centre
of effort as low as possible. The trick has always been to make sure the top batten(s) flick
across when tacking in light winds, yet make the roach stand up in a breeze and not flog off,
not only losing sail area but also causing extra drag.
Some of the nicest model yacht square top mainsails I have seen have been on the Italian
IACC120 class, where the sailmakers appear to have cracked the problem. The problem I have
is that the sailmakers don’t appear to speak English!
Go here for more info:
http://iacc120cup.altervista.org/Main0.html
Very nice square top mainsail on an Italian IACC120 Class model yacht
In the Mini40 class I have had my fair share of experiments but have never found a solution
that works for a top suit
With this intro, now come some photos of Glenn Dawson’s square top 10rater mainsail.
And I should hasten to add that it was Glenn’s suggestion to include this in the Crazy Ideas
section of this article, not mine!
Glenn Dawson’s Blade with the experimental square top mainsail
Nicely made by Jeff Green, the mainsail had a shorter foot than the conventional sail and no roach.
Glenn’s original rig was slightly under size in area, so no reduction in mast height was needed
Does it work? Let’s just say Glenn is using his original mainsail these days! My personal
observation of the rig was that it was behaving just like my mainsails on my Mini40, ie very
difficult to control through the wind ranges
And that’s it for this edition! Hope you have found it informative. If I have
made any errors in facts and statistics, my apologies, they were not intentional.
If anyone wishes to correct or add to the document I will be happy to re-issue or
alternatively someone else can have a go!
Ian
March 2013
7 Some Web sites and contact details
Australian Radio Yachting Association has a link to suppliers – here:
http://www.radiosailing.org.au/suppliers.htm
Frank Russell – designer of the Phoenix range
http://www.frankrusselldesign.com/ten_rater1.htm
An extremely good compilation of 10rater links and contacts (best I have seen) can be found
here in Frank Russell’s website
http://www.frankrusselldesign.com/suppliers.htm
A highly regarded supplier of fins and rudders and tapered masts is
Tony Oudshoorn
Ultralite Radio Yachting
Ph (09) 4416522
New Zealand.
www.ultralite-radioyachting.net
Plugging our local suppliers, our local sailmaker in Perth is Jeff Green who races a Diamond
http://www.jgsails.podserver.info/
One more section to come…..
8 One last thought for you
What is the average age of the sailors at your club? 45? 50? More?
I lived in Shanghai for two years before moving to Australia. Through the expat community I
discovered a couple of others with similar interests in model yachting and for a year I thought
it was just us sailing model yachts until one day I asked a Chinese colleague at work to google
“model yachting” in Chinese, and bingo! I found the E Class! This is essentially an IOM, but
with differences: same sail plan and same hull rules but no minimum weights, the spars can
be carbon and the fin is 2cm deeper. Don’t ask me why, but the class is administered by
NAVIGA**.
And there was another class – the S class, with rules that encourage you to compete with a
boat such as the Robbe Sirius (see photo below), an out-of-the-box ready to sail boat, 90cm
long, just needing better sails.
** For those of you who are curious about such things, Graham Bantock informed me at the time that NAVIGA
is a 'world' organisation for models (boats, planes etc) and includes radio sailing. It exists in competition with
the RSD to which authority over rc sailing is delegated by ISAF which asserts world authority over various
sailing related activities. Before RSD was so delegated it was more loosely attached to ISAF and before that
it went through a period where it attempted to merge with NAVIGA rc sailing to form one body. That could not
be accepted by NAVIGA, the story goes, so the idea was for both bodies to disolve and to form a new body that
would be attached to ISAF. This did not happen.
Anyway, the point I am leading up to is this. When I turned up at the first regatta with a
modified Squiggle One Metre, I was astonished to find that the average age of the skippers
was probably around 15! Don’t believe me? Look at the photos below
Competitors at a Chines Model Yacht regatta (I am in back row, centre). The man on the right is the
Chinese national coach for model yachting!
And look at the fan club! The mums and dads and uncles and aunts and passer-bys were always there
From what I understood China promotes model yachting at school/college level and students
are encouraged to build their own boats. This may be why they have opted to remain with
the E Class rather than move on to the now more expensive IOM. Asking Chinese people
simple questions was often anything but simple (!) but from what I worked out someone in
China turns out runs of keels, bulbs, kicking strap assembles etc and sells them once a year to
the schools to make up the kits for the boats. It also looked like there are 3 basic moulds for
the locals, with a fourth design coming out from Janusz Walicki. The Walicki link is important
here I think – I have no idea how long the relationship goes back in time, but the Chinese have
clearly latched on to his ideas – and this may all come from a “Mr Xuan”, who by all accounts
is “Mr China” for model yachting. That summer there was been a week-long training camp
session for the students at the Olympic rowing base outside Shanghai. We went there on
18th July to have a look, and when they saw me rigging my aging Peter Wiles 10Rater, they
opened the rear doors of a van and brought out 2 brand new Walicki 10Rs – which we were
not allowed to photograph (so naturally I did!) Later at lunchtime Mr Xuan took us to his
campus bedroom (!) which had in it a brand new Walicki Marblehead, a brand new Walicki E,
and a brand new TS2. These were all for his campaign on the NAVIGA championships in
Hungary in August (2009), for the 10R , M and E classes.
So – having digressed left, right and centre, here’s the point of all this:
can we get model yachting into schools?
One of Mr Xuan’s Walicki 10rs
THE END
Feb 07, 2017, 05:01 PM
Registered User
geh458's Avatar

New 10R: Update 2-7-2017


I'm getting closer to the water. All I have left to do, is install the electronics pot, and a few deck patches (clear one's for the maiden voyage to easily see what's going on inside).



Can anyone tell me how to rotate the photo's in the post? They are in the proper orientation on my computer.
Feb 07, 2017, 09:38 PM
Registered User
Gifford,
Maybe Boomer can rotate the pictures, he is a moderator. There might be an option when you upload them.
I am going with an 85 inch tall A rig and square top main for my blue Merlin, sails are being built by Don Burwell at Sirius Sails in Florida. Thinking of fitting an A2 set to my existing rig that will have a conventional main. Will see how the two boats go in a couple of weeks. Still have lots to do. Wish you were closer. Ryan
Last edited by Rssailor; Oct 16, 2017 at 12:09 AM.
Feb 15, 2017, 05:08 PM
Registered User
geh458's Avatar

New 10R: Update 2-15-2017


Not much new today, just the "C" Rig is complete. Now, on to the "D" rig, then the "A" when it gets here.....
Feb 15, 2017, 11:08 PM
Registered User
Australian 10R Nationals just concluded. Scott Conde sailing the same boat that Brad Gibson used to win the 10R World Championship (BG Design "Trance") won with a score after 21 races of 22 points. Congrats...
Feb 16, 2017, 01:20 AM
Registered User
That is very impressive. Sure says he is one really good sailor with a fast boat. Saw some pictures on facebook, looks like some great racing conditions.
Feb 17, 2017, 05:36 PM
Registered User
geh458's Avatar

New 10R: Update 2-17-2017


Here's the "D" Rig mast and main boom, before trimming to length.
Feb 18, 2017, 11:12 PM
Registered User
I just took a look at my new bulb. It is a lot longer then the bulb on my blue Merlin.
It was slightly damaged in shipping, but nothing a bit of sanding won't fix. Gonna need a lot of fairing though. I'm gonna work on it tomorrow. Will post a pic or two. Ryan
Feb 22, 2017, 10:19 PM
Registered User
We are having a 10 rater test event on Feb. 25 at the San Francisco Model Yacht club. Come join us if you live anywhere nearby and have a 10 rater or are interested in 10 raters. Boats will be on the water at Spreckles Lake at about 1PM. Ryan
Feb 23, 2017, 05:40 PM
Registered User
geh458's Avatar

New 10R: Update 2-23-2017


Hi Everyone,

I finished the "D" rig this afternoon, went to take a picture, and no joy. The camera turned on, but went right off, dead battery. So I'll post a picture tomorrow.

The last couple of things to do, are to cut out deck patch's, and mount the electronics pot, and that's where my question is. The pot fits really snug in the hole, but should I also glue it in, or just put a bead of silicone around the top to keep water out?


Gifford
Last edited by geh458; Feb 26, 2017 at 02:47 PM. Reason: Added the promised pictures
Feb 23, 2017, 10:13 PM
Registered User
Gifford, I would put a bead of Life Seal around where the pot meets the deck. Very important to keep water out. To bad you aren't closer, you could sail with us Saturday. Ryan
Feb 26, 2017, 01:44 PM
Registered User
The Second test races day for 10 rater class took place yesterday at SFMYC. We had three dedicated 10 raters and two I 54s sailing.
Dave Misunus brought a borrowed Tomahawk out to join the group. This boat was built by George Riberio about 15 years ago and had never been sailed according to Dave. The boat was fast, although the sails and rig had a few tuning issues that prevented the boat from going as well as the author thought it could. My Merlin went very well despite the fact that I am sailing on a 1000 square inch rig currently till my new A rig sails arrive. Looking forward to seeing the group gather for it's first season race on April 15th. I suspect we will see six or seven 10 raters sailing that day. Ryan
Last edited by Rssailor; Feb 26, 2017 at 01:49 PM.
Feb 26, 2017, 02:50 PM
Registered User
geh458's Avatar
To bad this race is scheduled on the 15th, that's the first day of the RG65 Rio Grande Cup Regatta here in Albuquerque, and I'm entered.

Gifford


Quote:
Originally Posted by Rssailor
The Second test races day for 10 rater class took place yesterday at SFMYC. We had three dedicated 10 raters and two I 54s sailing.
Dave Misunus brought a borrowed Tomahawk out to join the group. This boat was built by George Riberio about 15 years ago and had never been sailed according to Dave. The boat was fast, although the sails and rig had a few tuning issues that prevented the boat from going as well as the author thought it could. My Merlin went very well despite the fact that I am sailing on a 1000 square inch rig currently till my new A rig sails arrive. Looking forward to seeing the group gather for it's first season race on April 15th. I suspect we will see six or seven 10 raters sailing that day. Ryan
Feb 26, 2017, 06:56 PM
Registered User
Not sure coming all the way to SF for a few races is worth it Gifford. I'll put the 10 rater race schedule on here ne,the week after official SFMYC schedule is posted.
I put my new tripod for my laser line together and lasered white boat to determine keel fin placement. Also put first layer of fairing on my new bulb. Ryan
Last edited by Rssailor; Oct 16, 2017 at 12:11 AM.


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