The Fairwind, Fairwind 900, Fairwind II, and Fairwind III model
yachts are all included in the One design class.
The Fairwind One Design class is fashioned after IOR offshore
racing yacht designs of the 1980s and 1990s. While these IOR designs were not
as high tech as modern America's Cup yachts, they proved themselves in ocean
racing circuits to be capable of handling offshore conditions and durable enough
for long distance races. Similarly, the Fairwind is quite comfortable to sail
in a wide range of wind and sea conditions. It can handle large waves that can
prevail on sailing areas larger than ponds and it can perform well in a wide
range of wind conditions. It also looks great when being displayed on the mantle.
The Fairwind is available in kit form in most hobby stores
and from several internet hobby supply
sources. The kit is easy to put together and quite inexpensive. Because of this
there are a large number of boats that have been sold. Several large local fleets
of 30 or 40 boats have formed over the years. The one design nature of the boat
leads to close, competitive racing with exciting starts, mark roundings, and
tactical sailing.
The boat is a comfortable size with 900mm (35.43") overall
length and 8 pound race ready weight. It is small enough to transport and display,
yet large enough to be easy to see from shore while sailing. The kit comes complete
with many cosmetic features that can be added to enhance the looks of the boat,
or deleted for simplicity. The large amount of freeboard keeps the boat surprisingly
dry inside for a boat this size.
The Fairwind gained One Design class status in 2002 with the
adoption of a set of class rules. The Fairwind One Design class rules control
items that affect speed while allowing some degree of latitude in other areas.
This targeted approach to the rules minimizes the number of things that the
measurers need to measure and the builders need to control while still ensuring
a level playing field for racing where the races are won or lost on the racecourse
and not on the modeling table. AMYA Class RulesFairwind, Fairwind II, and Fairwind 900 - By Kyosho
FAIRWIND ONE DESIGN CLASS RULES - Version 3.0 - May 1, 2003
Fairwind General Class Description:
Length Overall (LOA) | 900 mm |
Beam | 226 mm |
Displacement | Minimum 8.0 lbs. |
Mast Height | 1220 mm |
Sail Area | 0.381 m2 |
The rules are intended to ensure that all boats
are as alike as reasonably possible with regard to hull, deck, keel, rudder,
displacement and rig size. It is hoped that the Fairwind will provide very close
racing with a one-design yacht. 1.0 CONCEPT
The definitions, dimensions, and restrictions
listed are intended to maintain the one-design concept for this class.
1.1 General
The class specification is defined by these class
rules, the manufacturer's kit instructions at the time the kit was assembled,
and any applicable rules of the AMYA, in that order of precedence. All dimensions
shown on the manufacturer's plans are to be adhered to unless specifically overridden
by these rules.
1.2 Definitions
In these rules the word "shall" means mandatory
while the word "may" is permissive.
1.2 Units of Measure
In these rules millimeters (mm) are used as the
unit of length to remain consistent with the assembly instructions provided
by Kyosho. For the purposes of measurement, inches can be substituted by applying
the conversion 25.4mm = 1.0 in. The weight of the boat is measured in pounds
(lb) since these rules override the assembly instruction regarding ballast.
2.0 STANDARDS
The class shall be called the "Fairwind One-Design".
Boats conforming to these rules shall be assembled from a kit, herein referred
to as "the kit". The kit is only that as manufactured by Kyosho of Japan and
sold as a Fairwind, Fairwind II or Fairwind 900. 2.1 Hull and
Keel
The hull and keel shall be as supplied by the
Kit but may be reinforced internally for collision protection but shall not
be modified in any other way. 2.2 Deck and Hatch (2002)
The deck shall remain as supplied by the kit
except for modifications allowed elsewhere in these rules. New or different
sheet exit guide holes may be added. The hatch cover shall be that as supplied
in the kit and referred to as "the cabin" in the manufacturers assembly instructions. 2.3
Rudder
The rudder shall be as supplied by the kit. If
damaged or broken a new one should be obtained from the manufacturer. The skipper
may repair scratches and other minor damage so long as those repairs do not
constitute a majority of the structure of the rudder. 2.4 Internal
Structure (2002)
The internal structural components of the boat
such as the servo tray, the mast step support column and the rudderpost support
brace may be modified or deleted. Additional structural components may be added.
Components may be constructed out of any commercially available material. 3.0
DISPLACEMENT AND BALLAST
The minimum ready-to-sail race weight shall be
8.0 lbs. The ready-to-sail race weight includes radio receiver, batteries, rudder
servo, sail control unit, sails and rigging. Removable ballast may be used but
must conform Rule E4.7 of Appendix E of The Racing Rules of Sailing for 2000-2004
as published by the International Sailing Federation relating to Radio Control
Yachts which reads:
E4.7 Moving Ballast
Rule 51 is replaced with:
During an event and unless the class rules specify otherwise,
(a) ballast shall not be shifted, shipped or unshipped
(b) except
for replacements of similar weight and position, no control equipment shall
be shifted, shipped or unshipped
(c) the position
of rig counterbalance weights may be adjusted
(d) bilge water
shall not be used to trim the boat, and may be removed at any time. 3.1
Materials
Ballast shall consist of a material not denser
than lead and shall be in the form of shot added to the keel. As specified by
the AMYA, ballast shall not be of a material that poses a hazard to the boat,
other boats or the environment. Ballast that contributes to the minimum weight
of the boat shall be fixed in the keel with glue or some other permanent means.
4.0 SPARS (2002)
The mast and booms shall be made of aluminum,
fiberglass, carbon fiber or wood. Hollow spars are allowed. Any replacement
spars must not exceed the dimensions of the originals provided in the kit. These
maximum dimensions include end fittings. Maximum dimensions
:
Jib boom: 8mm max diameter,
355mm max length.
Mast: constant section,
10mm max fore/aft dimension, 10mm max width, 1220mm max length. The mast length
is measured from the step to the top of the masthead fitting but excludes the
backstay crane.
Main Boom: 10mm max
diameter, 400mm max length.
Fittings attached to spars other than end fittings
are not considered part of spars. 5.0 RIGGING
Running and standing rigging may use commercially
available or home built fittings, fairleads, turnbuckles, screw eyes, bowsies,
goosenecks, spreaders, etc. The type of line or wire used for sheets or shrouds,
etc. is not controlled. Reinforcements may be added under the deck at the chainplates,
backstay attachment points, sheet exit guides, and jibstay attachment point.
All standing rigging shall be adjusted only by manual means. 5.1
Mast Rigging
The original standing rigging layout shall be
comprised of an adjustable, permanent backstay, sidestays, and a jibstay. Lower
sidestays (as per the kit) may be omitted. A jib boom topping lift may be added.
No other rigging such as jackstays or jumpers may be added to the rig. Rotating
masts are prohibited. 5.2 Jib Pivot (2002)
The Jib boom pivot shall be attached to the centerline
of the deck. The pivot may be adjusted fore and aft on both the deck and the
jib boom. The jib shall be rigged such that the jib boom does not extend forward
of a line projected upward along the stem of the boat when the jib boom is held
parallel to the centerline of the deck. The original kit's jib pivot tang may
be modified or removed. 5.3 Jib Counter balance (2002)
A jib counterbalance may be used, but must not
extend beyond a line projected along the stem of the boat. The counterbalance
is not counted as part of the jib boom for purposes of maximum length. 5.4
Mast Crane and Backstay Bracket (2002)
The maximum length of the crane at the top of
the mast is 80mm when measured from the front face of the mast to the aft edge
of the crane measuring parallel to the centerline of the crane. 5.5
Mast Fittings
Different or replacement mast fittings may be
used. 5.6 Wind Indicators
The use of a wind indicator or vane on the top
of the mast is allowed, and shall not be included in the restriction on mast
height (see 4.0). 5.7 Deck Layout:
The layout of components on the deck may be modified
to accommodate alternate control systems. Non-functional components such as
steering column and wheels, deck railings, winch and cleats may be omitted.
The cabin area may be sealed. Alternate deck fittings may be used. The fore/aft
location of the shroud attachments at the deck must conform to the manufacturers
assembly instructions. 5.8 Sail Controls
The manner in which the main and jib sheets are
rigged and controlled is left to the skipper's discretion provided only 1 R/C
channel is used for sail control (see 7.0). 5.9 Boom Vang (2002)
The boom vang may be deleted or altered. 5.10
Backstay (2002)
The backstay attachment to the hull may be altered
from the kit location, but must be on the centerline of the boat aft of the
hatch cover. The original backstay tang may be modified or removed. 6.0
SAILS (2003)
All unmodified sails supplied with the kit or
as replacement parts from the kit manufacturer shall be considered legal and
shall not need to conform to the measurements listed in Appendix #2. All other
sails shall conform to the diagram and measurements listed in Appendix #2. 6.1
Construction
Sail may be constructed of any material and may
be of single or paneled construction. Molded sails are specifically prohibited. 6.2
Corner reinforcements (2003)
Broadseam reinforcements batten pockets and battens
are unrestricted as to material. Corner reinforcements may extend a maximum
of 110mm from the corners of the sail. 6.3 Attachments
Halyard, downhaul, and clew outhaul attachment
points shall be placed within 25mm of each sail corner. Cunningham eyes
are allowed in the sails. 6.4 Battens (2002)
Battens may be fitted to the mainsail and jib,
with a maximum of four on the mainsail and two on the jib. They shall be placed
so as to divide the leach into approximately equal segments. Their maximum length
shall be as per the original sail battens supplied with the kit i.e. a maximum
of 95mm for the main and 65mm for the jib but may at the skippers discretion
be shorter or removed. 6.5 Measurement
Sails, when measured, may be measured on or off
the spar. Boltropes (if included on the sail) will not count as in the measurement
of the sail. Foot and leach curves shall be defined by the measurement points
and faired with a constant section batten connecting corners of the sail through
the intervening measurement points, with no bending in the batten induced beyond
the corners of the sail. The maximum dimensions of the sails are defined in
Appendix #2. There are no minimum dimensions. 6.6 Sail Numbers
and Class Logo (2003)
Sail Numbers are assigned by the
class secretary. Sail numbers must be displayed for all class events.
Sail numbers shall conform to Appendix G of The Racing Rules of Sailing for
2000-2004 as published by the International Sailing Federation as modified by
Rule E6 of Appendix E relating to Radio Control Yachts except as modified by
these rules as follows:
The use of the class logo is optional and shall be displayed only on
mainsail when used. The class logo is a stylized "F" as detailed in Appendix
#1.
The minimum size for sail numbers shall be 75mm. There is no maximum
size requirement
More or less than 2 digits of the sail number may be displayed if desired.
Display of sail numbers on the jib is optional.
Display of the National Identifier is optional.
For reference, rule E6 of the RRS
reads:
E6 APPENDIX G
IDENTIFICATION ON SAILS
Appendix G is changed as follows:
(a)
In rule G1 add RSD after ISAF.
(b) Rule G1.1(c) is replaced by: a sail
number, which shall be the last two digits of the boat registration number,
allotted by the relevant issuing authority. Where this is a single-digit number,
a 0 shall be placed in front. Alternatively an owner may be allotted a personal
sail number by the relevant issuing authority, the last two digits of which
may be used on all his boats. Where this is a single-digit number, a 0 shall
be placed in front.
(b)
In rule G1.2(b) delete and opposite and add to the table:
|
Minimum height |
Minimum space between letter and numerals
or edge of sail |
Numerals on RC boats |
100 mm |
13 mm |
Letters on RC boats |
60 mm |
13 mm |
Maximum dimensions shall be the
minimum plus 10 mm. The space between marks on opposite sides of the sail shall
be 60100 mm. If a sail is too small to use the specified dimensions, smaller
letters and numbers may be used, with 13 mm as the absolute minimum spacing.
(d) Rule G1.3(c) is replaced by: Sail
numbers shall be placed above the national letters. There shall be space in
front of the sail number for the prefix 1, which may be prescribed by the race
committee in the event of a conflict between numbers.
(e) Rule G1.3(e) is replaced by: The
sail number shall be displayed on both sides of the headsail.
Sail numbers should be of a color
that contrasts the sail color in such a way as to be easily visible. If desired
owners may display their assigned sail number on the hull or deck of their boat
as well without restriction. 6.6.1 Local Identifiers
If desired, a local identifier such as yacht
club identifiers may precede the sail number. 7.0 RADIO
A maximum of two R/C channels shall be used to
control the boat. One channel shall be used for sail control, the other for
the rudder. Radios and receivers with more than two channels are allowed so
long as only two channels are used. Radios must conform to national, state and/or
local regulations. 8.0 ADVERTISING/SPONSORSHIP
Advertising and sponsorship may be displayed
on boats and sails but so long as it does not interfere with the legibility
of sail numbers and other identification per Rule 6.8.
APPENDIX #3 Maximum Sail Measurements
|
Mainsail |
Jib |
A |
Luff |
1125 mm |
1048 mm |
B |
Leach |
1160 mm |
983 mm |
C |
Foot |
388 mm |
343 mm |
D |
Top Quarter Girth |
151 mm |
121 mm |
E |
Mid Girth |
267 mm |
218 mm |
F |
Bottom Girth |
345 mm |
299 mm |
G |
Foot Rounds |
10 mm |
10 mm |
H |
Head Board |
13 mm |
13 mm | |