How to Select a Radio Controlled Model Sailboat: 17 Steps
How to Select a Radio Controlled Model Sailboat: 17 Steps
RC model sailboats are fun for all ages! You can choose your boat from among many alternatives. These range from pre-built to designing and building your own. Factors to consider include your level of experience, where you plan to sail your boat, how competitive you want to be, and, of course, your budget. Whatever you decide you'll discover a great way to spend time outdoors with family and friends.
Line drawing and templates {Plans} for building a Star45 sailing model, Free to printout and scale to size
AMYA Star45 sailing model plans
Most browsers will allow you to right click and open the jpg images. You can then save them to your machine.
You can buy a Building Board jig, or build your own jig remembering building board is has frame spacing of 4 7/16" to reduce the overall length to 45".
You can print JPG drawings to desired sizes. You can get print outs on large paper at Staple's or similar store
These are JPG drawing and print outs may require adjustments to get the widths to correct sizing.
For a Star45 AMYA class you need to make adjustments to allow for planking thickness. The rules establish the maximum allowable beam dimension and hull length. Most browsers will allow you to right click and open the jpg files. You can then save them to your machine. This set of templates are based on drawing from John Fisher in 2006.
There are more templates on the blog http://woodstar45.blogspot.com/search?q=rudder
Star45Plans-s1with+grid.jpg
Star45Plans-s2_withgrid.jpg
Most browsers will allow you to right click and open the jpg images. You can then save them to your machine.
This set of plans are based on drawing from John Fisher 2006. John may have new and updated drawings available. Check with http://groups.yahoo.com/search?query=star45 membership required.
I want to thank J. Herrmann, www.graphicLanguageOnline.com, for his assistance in converting pdf's to jpg drawing, adding color to the templates and adding the grid to the final images Most browsers will allow you to right click and open the jpg files. You can then save them to your machine.
You can buy a Building Board jig, or build your own jig remembering building board is has frame spacing of 4 7/16" to reduce the overall length to 45".
There are many varieties of drawings, here are a few more:Star45 Hull Templates and shadows The grid shown is set to 1/4 inch squares. So if you print the templates you can check the size by making sure the grid yields a 1/4 square. Modelers will use different building materials for the model.
These are JPG drawing and print outs may require adjustments to get the widths to correct sizing.
For a Star45 AMYA class you need to make adjustments to allow for planking thickness. The rules establish the maximum allowable beam dimension and hull length. Most browsers will allow you to right click and open the jpg files. You can then save them to your machine. This set of templates are based on drawing from John Fisher in 2006.
Star45Plans-s1with+grid.jpg
Star45Plans-s2_withgrid.jpg
published interpretations are posted on the yahoo group http://groups.yahoo.com/neo/groups/Star45/info
Dave,
The last published S45 Rule interpretations are posted on the yahoo group
The last published S45 Rule interpretations are posted on the yahoo group
Model Sailboat resources, featuring the STAR 45 model yacht
Model Boat Journal
Construction photographs, articles and discussions regarding shipmodel building. Coverage includes models powered by Sail, Steam or Electric power Scale and Semi-scale, Radio Control Sail Boats.
Model Sail Boat: Building a 45inch Star Boat includes: The Star 45 Through Time A Brief History of the Star 45 Model Yacht
MainZone Model Boat Building Zones; Model Sail Boat Building
With the popularity of radio-controlled models, the number of people interested in owning a model yacht has also grown - in geometric range. As with model aircraft, the choice of sailing models runs the gamut from child's toy to sophisticated craft.
Includes: The Star 45 Through Time A Brief History of the Star 45 Model Yacht
Compiled, from information provided by enthusiasts in the building and sailing of Star 45s, by Phil Geren, 23 June 2006 Edited by Dave Mainwaring March 2008
Building Displaying Model Boats and Ships Boat and Ship Models display or powered by Sail, Steam or Electric power Scale and Semi-scale, Radio Control Sail Boats.
Model Boat Building Resource. Plans, snapshots, notes and sources for scratch builders
For example:Materials for spars (from 1995 discussion)
Gorilla's two-part epoxy
Revolutionary push rod connector system
Add an airhorn to your model
very good "figure-making class
Model Jonesport Lobster Boat Lines circa 1930-1940
mvmyc star45 construction manual: The electronic copy of the manual no longer exist. MVMYC wanted to make this public to others as a reference for building a Star 45. MVMYC created this manual when Paul G. was making Star 45 fiberglass hulls, decks, fins, rudders. Paul no longer makes the Star 45 fiberglass parts. In respect of viewing this now public manual, please do NOT contact any of the resources listed accept Scott R. as he is still making sails for Star 45. When viewing the PDF documents below, select the back button on your browser to return to this page.You can print each document to create a hard copy of the manual. per MVMYC
Sailing Models Breeze Chasers model boat building
Model sail boat pictures. Radio Control Scale and Semi-scale Model Sail Boats of all types.
The Star 45 Builders Journal Construction photographs, articles about the AMYA Star 45, S45
AMYA Star45 How To Build R/C Model Sail Boat
Downloadable plans {drawings, prints} on-line
Wooden model boat building. Based on the International Star Boat this semi-scale Star45 can be scratch built by novice or seasoned skipper. Easily radio controlled and large enough to see out on the water this is a model built by hobbyists for over thirty years, It is a hot model sail boat. . Laser cut bulkheads available from hobby suppliers.
LinkedIn Group for Model Ship Builders
Conversations about model boats and ships.Share information between peers and newbies: Sail, Live- Steam, Electric, Scale, Semi-scale, Radio Control, combat, submarines, big, gigantic, or static display. Meet builders and R/C skippers of all ages.
Ludwig Manufacturing Home of Ludwig RC Yachts Spar, Sails & Accessories. The Star45 plug is based on the newest set of profiles created by John Fisher with the increased 1" freeboard.
One Meter Net, website
Pond Yacht Works model Star45
Chesapeake performance Models Manufacturer, Distributor and builder
Official Carr Sails Website | Maker of Model Yacht Sails 40 Years Experience
Star 45 Class INSTRUCTIONS FOR SELECTION of Model sails
Using the chart below, establish requirements for your new sails as follows:
1) Select color for corner reinforcements: (red, yellow, blue, green, black or white.)
2) Select mainsail to mast attachment: Mast loops, jackwire, bolt-rope, hooks (add $for hooks.)
3) Select sail material if other than suggested: (TS-40 - TriSpi 40 (1 oz. mylar); PX-75 - Mylar (1.2 oz);
2D - 2.2 oz dacron (white only); 2N - 2.2 oz stabilized nylon (white, red, blue); 2MM - 2mil drafting mylar)
4) If Class Insignia and racing numbers required, select color: (red, blue, green or black), (add $)
5) If horizontal draft stripes required, (mylar only) select color: (red, blue, green or black), (add $)
6) If you intend to race under AMYA rules, check your class rule to confirm that aftermarket sails are allowed
AMYA buy Plans for Star 45 AMYA's Ship's Store
Houston Star 45
Full Size Star: International Star Class
Stevens AreoModel Laser Cutting. S45 Frames etc
AMYA website
2010 Julie Ayers Trophy winner,
About the AMYA
AMYA Classes, Boats (A-N)
AMYA Classes, Boats (O-Z)
Classified's
AMYA classifieds
AMYA Club directory
Club resources
Home of AMYA
AMYA _Join/Renew
AMYA, R/C Sailboat Magazine
AMYA Regattas
AMYA Regions
AMYA Racing Rules tutorial
Sails and supplier links
How to Select a Radio Controlled Model Sailboat, the how to manual that you can edit
Fishing Boats of the Northeast
MainZone International a Dave Mainwaring Model Boat Zone! > Lobster Boat Models
MainZone International THIS SECTION NEEDS REPAIR ~~~~~~~~~~~~~~~~~
Links to downloadable files for use in building the Star 45 reside on mainzone server
This model is is built using frames otherwise known as shadows or bulkheads. The files for these frames reside here on mainzone.com.
You can click on the links for files and your browser will download to your machine both the CAD (Computer Aided Drawings type DXF and DWG) and the PDF formatted files. Save the files to you machine's disc.
Please note; your machine (PC) may not have a program to display the dxf or dwg files as drawings. They may not be visible at all or they may display as a text stream of commands for the laser cutting machine.
John Fisher
Most laser plotters used to cut materials require either DXF files or DWG files
DXF files are CAD vector data - plotter files that instruct a device to "start here" then put the (pen, knife) down and "move to, go to"
You need a set of three files for frames and one file for the common building board set up jig.
A CAD viewer or CAD application is required to view the contents as images. Remember: Download the building board file and the three files for laser cutting frames.
The CAD files are provided "as-is". No warranty is expressed or implied. Questions regarding these files and building models using these files should be discussed on the Star45 group on yahoo.com
To set up the frames it is easier if you make a Building Board. Use the files for the Building Board jig, or build your own jig remembering building board is has frame spacing of 4 7/16" to reduce the overall length to 45".When ever building remember to measure and verify where you-are-at and that the hull will be true (free of twists or turns).
Stevens Aero www.stevensaero.com/shop/home.php?cat=449 has laser cut frames.
Our frames are cut for 1/16" thick planking and single chine stringer. They include the corrected half frames and the building board gives a finished hull OAL of 45". The files also are production ready with text on a single layer and "holds" added to keep the cut parts in the wood after cutting.
These files at Stevens are the frames from the offsets provided on the official star 45 plans cut from 1/8" light ply. John added a spot to put chain plates that are parallel to the mast step and interlock with the frames for additional strength. The building board is cut from 1/8" balsa and has frame spacing of 4 7/16" to reduce the overall length to 45". There is a hole in the transom for a sails etc silicone drain plug and a pc to support the rudder tube.
Mainzone CAD dxf files: Building Board Board Jig File type DXF
NOTE! You will see CAD laser cutter instructions not a picture of the building board.
Frames File type DXF 1 of 3
NOTE! You will see CAD laser cutter instructions not a picture of the frames.
FramesFile type DXF 2 of 3
NOTE! You will see CAD laser cutter instructions not a picture of the frames.
Frames File type DXF 3 of 3
NOTE! You will see CAD laser cutter instructions not a picture of the frames.
Mainzone CAD DWG files:
Building Board Jig file type DWG
Frames File type DWG 1 of 3
Frames File type DWG 2 of 3 Frames File type DWG 2 of 3
Frame images PDF file 1 of 2. This file contains ten pages.
Frame images PDF file 2 of 2. This file contains a single page
The pdf image files will display in your browser and may be viewed using the Acrobat Reader
They were built using the laser cut frames.
MX images
Steam Towboat Baltimore, Baltimore MD
The Listening-Zones website The World through hobbies, crafts, creative pastimes, E-mail and Web-based Conversations! Hobbies & Crafts Zones There are a lot of creative crafts for older kids and adults. I included the following because they are ones that I enjoy.
About Dave Mainwaring
I sailed my first model sailboat tethered by a string off the floats at the Wollaston Yacht Club, Quincy,MA, in grade school.
Then I built model airplanes. For several years I built U-Control planes and free flight sail-planes.
In junior high school I started racing real sailboats and my model airplane building stopped.
I served a tour of duty in the U.S. Coast Guard (USCG Evergreen WAGL295, Captain Of Port Boston). Later, after college, my hobbies involved building fiberglass dinghies and molding fiberglass Friendship Sloop models.
My involvement dates back to 1976: www.daveifm.wordpress.com/ ... designers and builders of models began working in parallel with Dumas. Beginning with the Dumas design, the early practice was to cut the high freeboard down, to cause the hull to more closely resemble the appearance of the International Star, and to lighten the hull. This had the effect of shortening the hull’s overall length.
The beam of the hull varied from builder to builder. Sails in the early days mainly came from Rod Carr’s model racing sail loft in Springfield, VA. Dave Mainwaring, in Needham, Mass., used an old, abandoned street sign for the material to fashion a keel of a design he found pleasing, being significantly narrower than the Dumas original and having a slight aftward rake, from top to bottom, in the aft edge (the Dumas keel’s aft edge was vertical.) Dave also designed a semi-balanced spade rudder, abandoning the International Star’s skeg. Dave drew sketches for his Star 45 design, having lines scaled from the 1946 edition and then from the 1976 revision of the ISCYRA’s official plans. Dave’s friend Jack Sullivan, a design draftsman, rendered the sketches on mylar, and both Dave’s and Dumas’ keel designs were shown. These drawings have undergone three revisions. Revision 3, the current official version which governs the dimensions of Star 45 boats built from scratch, signed by John W. Mayers, clearly shows the profiles of the Mainwaring and Dumas keels.
The idea of using fiberglass reinforced plastic for hull construction was inside many a cranium by the mid 1970s. In January of 1976 Dave Mainwaring borrowed a wooden hull from Dave Holmes and made what is probably the first female mold for making fiberglass Star 45 hulls. By July 1976 Dave had advertised for sale his “Sirius 45, Star 45 Class model radio control sailboat” – the short kit consisted of fiberglass hull, fiberglass deck, fiberglass aerodynamic keel shells, sail plan, construction drawing, and model builders guide, all for $65.00.
Sure enough, the rumor was true, and in 1976 Dumas also began making its hull design in fiberglass. The Mainwaring mold was then passed to John Reynolds in Orlando, FL, and John made many fiberglass hulls. His wife Mary became a highly-reputed maker of precision-built Star 45 sails.
“In winter of 1970-71, the AMYA President designated Ralph Newman of Clarence, NY to head up the effort for the Star 45. By spring 1971, the position was transferred to H. Whitney (Pete) Cutler of Brookside, NJ.
“Model Yachting Magazine Issue #5 (Fall 1971) featured the first technical contribution in an article titled “Improving the Dumas Star 45” authored by Ben Hogensen.
the 20 boat minimum reported as being reached in Fall of 1972,
In Model Yachting #18 (Winter 1974), AMYA’s Bob Harris appointed Rod Carr as Class Secretary, and Rod immediately scheduled the first Divisional Class Championship Regatta (DCCR) and first Annual Class Championship Regatta (ACCR) for the 1975 sailing season. Star 45 Column also began to appear regularly in Model Yachting.
“By the summer of 1975, the emphasis placed on class publicity was beginning to pay off.The Eastern Divisional Championship was held in Savannah
“Class population had grown to 44 boats by spring of 1975, and the 1976 ACCR was scheduled for July 18, 1976 at Lake Alcyon,
“After his year as Class Secretary, David Holmes turned the reins over to Al Hemmalin of Middletown, RI. By fall of 1976 Model Yachting #25 reported 66 Stars registered, and a successful completion of the 1976 ACCR at Lake Alcyon.he fleet was made up of returning skippers as well as new skippers who were drawn to the rapid growth of the class.
To continue the encouragement of new skippers, Rod Carr donated an engraved, spun aluminum dog dish trophy entitled “Spot’s Dish”, named for Rod’s Star 45 which had won the first three Annual Class Championship Regattas.
Model Yachting #31 (Spring 1978) Class Secretary Bill Weiss reports that the 143rd Star was registered.
“Published class records are sketchy until Model Yachting #41 (Fall 1980) reports a 9 boat ACCR won by Bill Rader who was to become Class Secretary a year later.In Model Yachting #44 (Fall 1981)the Class Secretary reported that 200 StarS had been registered since 1970, but the number of current active skippers on the AMYA roles was not given.“
== From Rod Carr:
{Spot}“The hull was made of 3/32” aircraft ply over 1/8” frames copied from Dumas kit parts with the ¾” of extra freeboard removed (Figure 1 at the end of this Newsletter).A balanced Vortex aluminum rudder was fitted as was the fiberglass keel and bulb from a Model Masters Yankee 50/800 model. Molten lead was poured down the fin into the bulb, and the fin length adjusted to match the draft of the kit boat. Decking was 1/16” aircraft plywood with a very large hatch.
“The standing rigging was typical EC-12 configuration with one set of spreaders, jumpers, and upper and lower shrouds.No topping lift was fitted.Early testing showed that boat balance could be well controlled by mainsail set and trim, so a single mounting hole for the pegged-base mast was provided in the deck.he mast sat upon an aluminum plate which provided the bottom mounting point for the mainsail boom vang.his arrangement coupled with loose standing rigging tensions in light air, encouraged the mast to rotate a bit on each tack giving some aerodynamic advantage over a fixed arrangement.he masthead crane was extended substantially to allow the backstay to clear the mainsail roach.
“Running rigging consisted of a mainsheet which began on a cleat on the boat transom just to port of the “S” in Spot. It went forward to a double purchase blocking system on the single arm Harris L’il Herc bang-bang winch, and then out the sheet exit guide aft of the mast step to the main boom and down to a manually adjusted travelerThe traveler was a curved piece of curtain track with a well greased plastic slide as a traveler car.This item was well worth the effort in construction and adjustment as it provided the control necessary to keep mainsail twist under very fine control from the transmitter, even though proportional servo response was yet to become common.If the skipper kept his wits about him, it was rare for the boat to fail to be first at the weather mark.
“Sails were of 2 oz dacron, and featured what was termed California Cut in honor of some early experiments carried out in the Golden State where broadseams were placed in the luff area of the sails extending back only about half way to the leech.The result was a quite nicely cambered sail that had a smooth leech.he result was quite remarkable acceleration which paid off, given the relatively low displacement of the hull.
“With no Star fleet nearby, Spot was sailed as much as possible with the Potomac MYC EC-12 fleet.She held her own in light air as having essentially the same sail area and less wetted surface she generally did well, out-accelerating the heavier full-keeled boats.ut in medium to heavy air she really came into her own.Pressed to weather, the leeward bow of the hull did a good job of encouraging the boat to round up, and she routinely out pointed the 12s, much to the dismay of the locals.er hydrodynamically shaped keel fin assisted in windward performance, especially when facing kit boats that were using the flat plate fin. Her downwind performance in light air was not sparkling, but if trimmed bow up, she was quite a sight in heavier air, almost planing in gusts.o doubt that the experience gained in racing in the competitive EC-12 Fleet was a strong contributor to the boat’s success in ’75 – ’76 – ’77.
“The boat’s configuration was retained without changes except for a repainting from the original blue topsides and white bottom in 1975 to an all yellow hull, keel, rudder for the ’76 and ’77 season.eclining winning margins showed that, as a benchmark, she was being rapidly overtaken by the developing construction and sailing skills of the rest of the class. So she was gracefully retired after her third win.
A history of model yachtingby Norman Hatfield is available on line. “The I.M.Y.R.U., particularly by its then Chairman, Norman Hatfield, to get Model Yachting accepted into membership of the full-size governing body, the International Yacht Racing Union (IYRU). This work culminated on 1st May, 1990 when the I.M.Y.R.U. became the Model Yacht Racing Division of the IYRU (IYRU- MYRD). In its turn, in August, 1996, the IYRU changed its name to the International Sailing Federation (ISAF) and MYRD is now the Radio Sailing Division (RSD).”
Then I built model airplanes. For several years I built U-Control planes and free flight sail-planes.
In junior high school I started racing real sailboats and my model airplane building stopped.
I served a tour of duty in the U.S. Coast Guard (USCG Evergreen WAGL295, Captain Of Port Boston). Later, after college, my hobbies involved building fiberglass dinghies and molding fiberglass Friendship Sloop models.
My involvement dates back to 1976: www.daveifm.wordpress.com/ ... designers and builders of models began working in parallel with Dumas. Beginning with the Dumas design, the early practice was to cut the high freeboard down, to cause the hull to more closely resemble the appearance of the International Star, and to lighten the hull. This had the effect of shortening the hull’s overall length.
The beam of the hull varied from builder to builder. Sails in the early days mainly came from Rod Carr’s model racing sail loft in Springfield, VA. Dave Mainwaring, in Needham, Mass., used an old, abandoned street sign for the material to fashion a keel of a design he found pleasing, being significantly narrower than the Dumas original and having a slight aftward rake, from top to bottom, in the aft edge (the Dumas keel’s aft edge was vertical.) Dave also designed a semi-balanced spade rudder, abandoning the International Star’s skeg. Dave drew sketches for his Star 45 design, having lines scaled from the 1946 edition and then from the 1976 revision of the ISCYRA’s official plans. Dave’s friend Jack Sullivan, a design draftsman, rendered the sketches on mylar, and both Dave’s and Dumas’ keel designs were shown. These drawings have undergone three revisions. Revision 3, the current official version which governs the dimensions of Star 45 boats built from scratch, signed by John W. Mayers, clearly shows the profiles of the Mainwaring and Dumas keels.
The idea of using fiberglass reinforced plastic for hull construction was inside many a cranium by the mid 1970s. In January of 1976 Dave Mainwaring borrowed a wooden hull from Dave Holmes and made what is probably the first female mold for making fiberglass Star 45 hulls. By July 1976 Dave had advertised for sale his “Sirius 45, Star 45 Class model radio control sailboat” – the short kit consisted of fiberglass hull, fiberglass deck, fiberglass aerodynamic keel shells, sail plan, construction drawing, and model builders guide, all for $65.00.
Sure enough, the rumor was true, and in 1976 Dumas also began making its hull design in fiberglass. The Mainwaring mold was then passed to John Reynolds in Orlando, FL, and John made many fiberglass hulls. His wife Mary became a highly-reputed maker of precision-built Star 45 sails.
“In winter of 1970-71, the AMYA President designated Ralph Newman of Clarence, NY to head up the effort for the Star 45. By spring 1971, the position was transferred to H. Whitney (Pete) Cutler of Brookside, NJ.
“Model Yachting Magazine Issue #5 (Fall 1971) featured the first technical contribution in an article titled “Improving the Dumas Star 45” authored by Ben Hogensen.
the 20 boat minimum reported as being reached in Fall of 1972,
In Model Yachting #18 (Winter 1974), AMYA’s Bob Harris appointed Rod Carr as Class Secretary, and Rod immediately scheduled the first Divisional Class Championship Regatta (DCCR) and first Annual Class Championship Regatta (ACCR) for the 1975 sailing season. Star 45 Column also began to appear regularly in Model Yachting.
“By the summer of 1975, the emphasis placed on class publicity was beginning to pay off.The Eastern Divisional Championship was held in Savannah
“Class population had grown to 44 boats by spring of 1975, and the 1976 ACCR was scheduled for July 18, 1976 at Lake Alcyon,
“After his year as Class Secretary, David Holmes turned the reins over to Al Hemmalin of Middletown, RI. By fall of 1976 Model Yachting #25 reported 66 Stars registered, and a successful completion of the 1976 ACCR at Lake Alcyon.he fleet was made up of returning skippers as well as new skippers who were drawn to the rapid growth of the class.
To continue the encouragement of new skippers, Rod Carr donated an engraved, spun aluminum dog dish trophy entitled “Spot’s Dish”, named for Rod’s Star 45 which had won the first three Annual Class Championship Regattas.
Model Yachting #31 (Spring 1978) Class Secretary Bill Weiss reports that the 143rd Star was registered.
“Published class records are sketchy until Model Yachting #41 (Fall 1980) reports a 9 boat ACCR won by Bill Rader who was to become Class Secretary a year later.In Model Yachting #44 (Fall 1981)the Class Secretary reported that 200 StarS had been registered since 1970, but the number of current active skippers on the AMYA roles was not given.“
== From Rod Carr:
{Spot}“The hull was made of 3/32” aircraft ply over 1/8” frames copied from Dumas kit parts with the ¾” of extra freeboard removed (Figure 1 at the end of this Newsletter).A balanced Vortex aluminum rudder was fitted as was the fiberglass keel and bulb from a Model Masters Yankee 50/800 model. Molten lead was poured down the fin into the bulb, and the fin length adjusted to match the draft of the kit boat. Decking was 1/16” aircraft plywood with a very large hatch.
“The standing rigging was typical EC-12 configuration with one set of spreaders, jumpers, and upper and lower shrouds.No topping lift was fitted.Early testing showed that boat balance could be well controlled by mainsail set and trim, so a single mounting hole for the pegged-base mast was provided in the deck.he mast sat upon an aluminum plate which provided the bottom mounting point for the mainsail boom vang.his arrangement coupled with loose standing rigging tensions in light air, encouraged the mast to rotate a bit on each tack giving some aerodynamic advantage over a fixed arrangement.he masthead crane was extended substantially to allow the backstay to clear the mainsail roach.
“Running rigging consisted of a mainsheet which began on a cleat on the boat transom just to port of the “S” in Spot. It went forward to a double purchase blocking system on the single arm Harris L’il Herc bang-bang winch, and then out the sheet exit guide aft of the mast step to the main boom and down to a manually adjusted travelerThe traveler was a curved piece of curtain track with a well greased plastic slide as a traveler car.This item was well worth the effort in construction and adjustment as it provided the control necessary to keep mainsail twist under very fine control from the transmitter, even though proportional servo response was yet to become common.If the skipper kept his wits about him, it was rare for the boat to fail to be first at the weather mark.
“Sails were of 2 oz dacron, and featured what was termed California Cut in honor of some early experiments carried out in the Golden State where broadseams were placed in the luff area of the sails extending back only about half way to the leech.The result was a quite nicely cambered sail that had a smooth leech.he result was quite remarkable acceleration which paid off, given the relatively low displacement of the hull.
“With no Star fleet nearby, Spot was sailed as much as possible with the Potomac MYC EC-12 fleet.She held her own in light air as having essentially the same sail area and less wetted surface she generally did well, out-accelerating the heavier full-keeled boats.ut in medium to heavy air she really came into her own.Pressed to weather, the leeward bow of the hull did a good job of encouraging the boat to round up, and she routinely out pointed the 12s, much to the dismay of the locals.er hydrodynamically shaped keel fin assisted in windward performance, especially when facing kit boats that were using the flat plate fin. Her downwind performance in light air was not sparkling, but if trimmed bow up, she was quite a sight in heavier air, almost planing in gusts.o doubt that the experience gained in racing in the competitive EC-12 Fleet was a strong contributor to the boat’s success in ’75 – ’76 – ’77.
“The boat’s configuration was retained without changes except for a repainting from the original blue topsides and white bottom in 1975 to an all yellow hull, keel, rudder for the ’76 and ’77 season.eclining winning margins showed that, as a benchmark, she was being rapidly overtaken by the developing construction and sailing skills of the rest of the class. So she was gracefully retired after her third win.
A history of model yachtingby Norman Hatfield is available on line. “The I.M.Y.R.U., particularly by its then Chairman, Norman Hatfield, to get Model Yachting accepted into membership of the full-size governing body, the International Yacht Racing Union (IYRU). This work culminated on 1st May, 1990 when the I.M.Y.R.U. became the Model Yacht Racing Division of the IYRU (IYRU- MYRD). In its turn, in August, 1996, the IYRU changed its name to the International Sailing Federation (ISAF) and MYRD is now the Radio Sailing Division (RSD).”
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