FAST ELECTRIC SCALE UNLIMITED HYDROPLANE COMPETITION
GENERAL RULES
1. Fast Electric Scale Unlimited Hydroplane Racing Rules are intended as a supplement to the General Powerboat Rules of Competition. In the case of a conflict, the Fast Electric Scale Unlimited Hydroplane Racing Rules shall prevail.
2. The purpose of the class is to duplicate the unlimited class of hydroplanes as closely as
possible.
3. The National Scale Unlimited Hydroplane Chairman shall coordinate and com-municate the business of Scale Unlimited Hydroplane competition with the individual district Scale Unlimited Hydroplane Chairmen.
4. The Scale Unlimited Hydroplane Contest Board shall be made up of the National Scale
Unlimited Hydroplane Chairman and a representative from each NAMBA district. The
Scale Unlimited Hydroplane Contest Board reserves unto itself the power of decision in all matters of duplication or conflict.
RACE FORMAT
1. At the discretion of the Contest Director, races will be run either under the NAMBA Heat Racing format or the “love plan” which is run as follows:
2.
a. The regatta must consist of three (3) preliminary rounds of heats and one (1) final round
of concluding heats. The concluding round of heats must consist of one (1) final heat
sometimes called the “main” and may include a maximum of two semi-final heats
sometimes called the “semi-main” and/or “consolation/trophy” heats.
b. The division of boats into heats for the three (3) preliminary rounds shall occur by
random draw. The drawing of boats into heats for round one shall occur immed-iately
following the driver’s meeting and before heat racing begins. A drawing of boats into
heats for rounds two through four shall occur in the presence of owners and drivers, if
possible.
c. The boats with the highest points after the three (3) preliminary rounds shall be eligible
for the final heats. The number of boats eligible for the final heats is six. If a frequency
conflict exists between two or more boats eligible for the final heats, preference goes to
the boat that has accumulated the most points in the preliminary rounds, or to the boat
with the fastest time should a tie in points occur. The other boat will have the option to
change to any other available frequency.
d. After the final field has been set, the next lower boat shall be designated as an alternate
starter for the final heat should one of the boats in the final heat field fail to start.
Revised 11/15/99
e. After the final heat field has been set, the boats not qualified for the final heat shall be
used to fill the “semi-main” and/or “consolation/trophy” heat(s).
f. The outcome of any of the “semi-main” and/or “consolation/trophy” heats will not affect the overall standings or points for the day.
g. Final race standings shall be determined by order of finish in the final.
OFFICIAL COURSES
1) The course shall be defined and measured as follows:
a. The course shall be 0.90 miles in total length
b.There shall be a minimum of 3 (three) laps required in the total race distance for all classes
c. When applying for Records, the District Director or his appointed
alternate from the District in which the contest is held, must
certify the course is:
i. not less than required in Courses, B.1)a), above;
ii. the device or devices used to time the race shall be capable of measuring the Race Time to the nearest 1/10th of a second.
2) The turns shall be clockwise and be defined as follows:
a. Turns of 90 degrees and 135 degrees must have a 15 foot to 30
foot radius and marked by a minimum of 2 (two) buoys. Radius
turns of 30 (thirty) feet or larger must have additional buoys to a
maximum of 5 (five) being used to adequately define a turn.
B. Turns of 135 degrees or more shall be marked by a minimum of 3
(three) buoys for radii between 15 (fifteen) feet and 30 (thirty)
feet. For radii over 30 feet, additional buoys to a maximum of 5
(five) to adequately define the turn shall be used
HULL SPECIFICATIONS
1. All boats shall be models of past or present American Power Boat Association Unlimited
Hydroplanes that are listed on the Fast Electic Scale Unlimited Hydroplane Master Hull Roster.
2. Boats are to be built on a scale of 1½ inches equals 1 foot of the actual boat (1/8th Scale).
3. The true scale dimensions of any Fast Electric Scale Unlimited Hydroplane shall be derived from the unlimited dimensions listed on the Scale Unlimited Hydroplane Master Hull Roster. Boats shall measure within the following tolerances of the true scale size, excluding appendages.
a. Overall length ……………………………... ± 1 inch
b. Beam…………………………………….……± 10%
c. Maximum Depth……………………………...± 10%
d. After plane length (three point design)….……± 10%
e. Tunnel Width…………………………………± 10%
4. Boats shall be painted, configured, and detailed like the actual unlimited as it ran on the water. The acquisition of documentation validating a paint scheme, cowling configuration, engine configuration, or other scale details shall be the responsibility of the boat’s owner. Photographs of the boat are an acceptable form of documentation.
5. Boats shall enter competition complete with cowlings(s) and driver(s). If any of the
removable parts fall off the boat during competition, except as a result of a collision, that
boat will be awarded no higher than sixth place points in that round upon completion of the heat. This penalization only affects the points that are awarded and not the finishing
placement of the boat which incurred the infraction. The placement of and points awarded to other boats in the heat are not affected by this ruling.
5. The boat’s motor shall be concealed by either an engine cowl, fake engine (Allison, Rolls, etc.), or both.
6. The number of props and rudders shall coincide with that of the original full sized unlimited hydroplane.
7. Outdrive units and outdrive engine(s) are prohibited unless the full sized boat after which the boat is being modeled had an outdrive or outdrive engine(s), in which case the model must be configured like the full sized boat.
8.- The drive dog must not extend more than one drive dog length past the transom unless the real boat being modeled did and must be scaled accordingly
9. The boat bottom/sponson profile shall be the same general appearance as that of the full sized unlimited hull it represents with the following exceptions:
a. Sponson riding surfaces may be modified.
b. Propeller shafts may be articulated.
c. Rudders and skid fins may be configured and located as desired.
ENGINE SPECIFICATIONS
1. Any amount and/or size of motors, any endbell, bearings, and magnet. With a max onboard voltage of 39 volts.
MASTER HULL ROSTER
1. The Fast Electic Scale Unlimited Hydroplane Master Hull Roster shall contain the name and details that identify each boat that may be built for Scale Unlimited Hydroplane competition. It shall contain the principle dimensions of each boat that is listed, if known.
2. The National Scale Unlimited Hydroplane Chairman will be responsible for compiling,
interpreting, updating, and distributing the official Scale Unlimited Hydroplane Master Hull Roster. The official Scale Unlimited Hydroplane Master Hull Roster may be purchased for $5 and must be signed and dated by the National Scale Unlimited Hydroplane Chairman. He will make an updated roster available by January 31st of each year.
3. Boats must meet the following criteria to be placed on the Scale Unlimited Hydroplane
Master Hull Roster:
a. The full sized boat must have been registered with the American Power Boat
Association racing committee.
b. The registered boat must have made at least one verifiable test run in the water.
4. The Scale Unlimited Hydroplane Master Hull Roster will include the name, address, and telephone number of the National Scale Unlimited Hydroplane Chairman, all District Fast Electric Scale Unlimited Hydroplane Chairmen, and all known manufacturers, builders, photographers, plan makers, etc. which are helpful in building Scale Unlimited Hydroplanes.
Revised 11/15/99
SCALE CONCOURS JUDGING
1. All boats are to be judged from six feet off (stand off scale). A picture must be supplied to the contest director for each boat entered in the concours judging.
2. Any boat entering the concours judging must, at a minimum, start one heat of the race in order to be eligible for the concours award.
3. Judging will be based upon a point system as follows:
a. Documentation
1. 0-20 points - Photograph(s)/Presentation
b. General Appearance
1. 0-10 points - Workmanship
2. 0-10 points - Engine, exhaust, and radio gear concealment
c. Detail
1. 0-10 points - Engine/cowl detail
2. 0-10 points - Driver detail
3. 0-10 points - Cockpit detail
c. Paint Job, Markings, Etc.
1. 0-10 points - True colors
2. 0-10 points - Scale of markings, decals, lines, numbers
3. 0-10 points - Overall finish
ANNUAL NAMBA NATIONALS
1. All Fast Electic Scale Unlimited Hydroplanes entered in the annual NAMBA Fast Electric Nationals must have a photograph showing the general configuration and paint scheme of the full
sized boat being modeled. Any exceptions to this must be approved in writing by the
National Scale Unlimited Hydroplane Chairman.