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Classes of Boats we race

 

NITRO, PETROL & FE CLASSES

1/8th SCALE HYDROPLANE
Aim: To duplicate the sport of full sized hydroplane racing as closely as possible, with model boats that are configured, painted and detailed like their full sized counterparts.

1. A register of this class will be maintained on the SUHA Registry List.

2. Requirements for registering 1/8th Scale Hydroplane
a. To register a boat the person registering must be a financial member of the SUHA and remain financial at all times to retain registration of the model
b. Application must first be made to the registrar to confirm the availability of the boat being built. (This is to avoid duplication of boats). Any one hull that raced over several seasons with the same paint scheme shall be deemed to be the same boat, whether or not small cosmetic changes were made to the original design and paint scheme. (Salt water cowlings etc are deemed still as the same boat).
c. The builder must state their intention to build the model as a race boat or show boat only, at the time of registration. (Show boats can be duplicated in race boat form).
d. Once confirmation is approved, a colour photo or colour copy of a photo of the full sized boat must be sent to the registrar to be kept in the master register. (It then remains the property of the SUHA).
e. No individual may hold registration on more than one boat in development stages unless special approval is obtained from the SUHA.
f. A two year building time from date of registration will apply, an extension period may be granted at the registrar’s discretion.
g. A colour photo or colour copy of a photo of the completed model must be sent to the registrar to be kept in the master register to prove completion. (It then remains the property of SUHA).
h. Registration must be renewed every two years from 
01/01/95
i. Builders/Owners not conforming to the above criteria (A, D, G, & H) will not qualify to be entered at any SUHA sanctioned regatta.

3. Hull and Engine Requirements.
a. All hulls shall be of past or present full sized qualified racing Unlimited Hydroplanes.
b. All models will have a minimum length of 1067 mm unless indicated otherwise by the APBA master hull roster.
1/8 scale unlimited hydroplanes shall satisfy the dimensions of the APBA master hull roster with the following tolerances to scale being allowed (excluding appendages):
Length overall +or- 25mm
Beam +or- 10%
Maximum Depth +or- 10%.
Afterplane length (3 pt) +or- 10%
Tunnel width +or- 10%

All models will be issued with an acceptance certificate from the registrar once all
registration details have been completed. The certificate will include size verification, paint details etc.
c. Maximum engine capacity shall be .67 cubic inches (10.9 cc).
d. Ride surfaces do not have to duplicate the original full sized counterpart.
e. The engine and tuned pipe must be concealed.
f. The drive dog must not extend beyond the transom unless the full sized boat does so
and is shown to be so by photo.
g. Noise level shall be as per the MMPBC rules (stated elsewhere).
h. Boats shall compete with scale drivers in cockpits and cowlings, including dummy
engines, and turbine tubes. Scale appendages must be used unless damaged beyond
repair during regatta race day. (Driver to be minimum shoulder and head height).
i. Hull 
or cowl offsets existing on the actual boat may be modeled in reverse (mirror image) if the correct dimensions are maintained. 
j. A motor belly pan may be inserted, for motor and flywheel only, on the model, even if  it was not on the full size hull configuration.
The dimensions shall not exceed 90mm in width, 190 mm in length, and 20 mm in
depth it must not exceed the depth of any ride surface, nor be constructed for the intent
of a ride surface.

4. Regatta Format.
Boats shall be raced using the oval format.

SCALE 45 HYDRO
1. Hulls can be accurate scales of past or present full sized 3 point hydros, or they may be
free lance hydros finished in a manner appropriate to a full sized hydro.
2. Freelance Canard, Tunnel and Outrigger designs are not eligible to run in this class.
3. Accurate scale hulls must be registered under the same requirements as 1/8th Scale
Hydros.
4. A name, scale or fictional, must appear on the boat, and in the case of a fictional boat
the owners a race number must be displayed.
5. Minimum hull length will be 890 mm (35 inches).
6. Maximum engine capacity must not exceed 7.509 cc.
7. Air dams and ride plates are permitted.
8. Open cockpit must compete with a driver of scale like appearance. It must be at least
shoulders and head height. Enclosed cockpit hydros must at least have a painted
windscreen.
9. Boats shall be raced using the oval format.
10. All tuned pipes must be concealed where practical
11. For picklefork hulls the front recess shall not be more than 25% of the total hull
length. (A forward wing is considered part of the hull and is not included in 25%
picklefork recess).
12. Gearboxes are not permitted


GAS SCALE CLASSIC HYDRO:
1. Hulls to be stand off scale of past or present full sized 3 point hydros, or they may be freelance finished in a manner appropriate to a full sized hydro.
2. Freelance Canard, Tunnel and Outrigger designs are not eligible to run in this class.
3. Accurate scale hulls must be registered under the same requirements as the ⅛th Scale Hydros.
4. A scale or fictional name must appear on the boat, and in the case of a fictional boat, a racing number must be displayed.
5. Minimum hull length will be 1067 mm (42.5 inches )
6. Engine be 2-stroke petrol powered with a maximum displacement of 26 cc. to be G231PUM or G260PUM Zenoah Motors
7. Air dams and ride plates are permitted.
8. Gearboxes shall not be permitted
9. The strut may be installed underneath the hull, OR on the back of the transom with the front face of the drive dog no more than 80 mm from the transom. The strut may not extend past the rudder, and extension struts will not be allowed. The strut used must be of the standard over the counter type, or a similarly styled scratch built unit
10. The Format rules and event specifications that are applicable from the 1/8th scale hydroplane will apply.
11. All tuned pipes must be concealed.
12. For pickle fork hulls the front recess shall not be more than 25% of the total hull length. (A forward wing is considered part of the hull and is not included in the 25% pickle fork recess) (Three winged hulls permitted.)
13. Normal racing rules and guidelines apply. 

 

 

PETROL SPORT HYDRO

GENERAL DESCRIPTION
Freelance Sports Styled Unlimited Light and Unlimited Hydroplane Class.
All boats will be three (3) point Hydroplanes, no Canards or Outriggers.

HULL SPECIFICATION

1. Boats may be wood or Fibreglass/composite type construction
2. Hull length shall be a maximum of 56 inches, minimum of 42 inches
3. Closed cockpit screen may be painted to simulate enclosed cockpit, open cockpit must have driver, No animal or cartoon characters. 4. All boats must have a Sponsor name & Logo. The sponsor/Logo may be original or of your own choice.
5. Normal hull configuration shall be conventional round nose, shovel nose, dropped sponson or pickle fork design. The pickle fork shall not exceed 25% of the hull length.
6. No rear sponson, ride shoe or other riding surface allowed aft of the sponson transom.
7. Engine belly pans are allowed. Engine belly pans may not extend beyond the engine compartment.
8. Nothing may extend more than 5 ¼ inches beyond the transom.
PETROL SPORT HYDRO ENGINE SPECIFICATION
9. Any two stroke petrol engine can be used up to 27cc, standard or modified and any configuration. Electronic or magneto ignition allowed.
10. Any carburettor may be used.
11. Any exhaust system allowed. All boats must meet MMPBC 87db Noise limit.

 

 
Class I Semi Scale Offshore  

CLASS I, II & III SEMI SCALE OFFSHORE
1. All boats shall have the appearance of full size offshore powerboats complete with
appropriate colour scheme detail, racing number and two driver figures or a painted
enclosed cockpit..
2.Classes shall be determined by engine swept volume measured in or parts of a cubic cm and shall be as described below.
Class - 3 Up to 3.5cc glow engine
Class – 2 3.51cc to 7.509cc glow engine
Class – 1 10.00cc to 35cc glow or petrol
3. The engine and tuned pipe shall be concealed if possible.
4.Normal racing rules and engine classes shall apply where applicable.
5. The course will be set out to suit the water available.

 Class II Semi Scale Offshore

 

 

ELECTRIC CLASSES 

ELECTRIC CLASS RACING RULES
All boats must conform to MMPBC electric class specifications
MMPBC racing rules and guidelines will apply excepting the following.

BUOY INFRACTIONS
1. Last place shall be automatically assessed when a boat cuts inside a course marker or when a boat jumps over or obviously hits a buoy. No penalty shall be assessed for a boat that touches a buoy on the outside causing no damage or displacement. If another boat misses a buoy in the same heat it is then assessed last place and the previous boat is no longer last and so forth.

a) The race will be run over four laps on the oval course clockwise except Scale 45 and 1/8th Scales which run 5 Laps.

b) Start countdown will be one minute.
c) Launching Time 30 to 11 seconds
    i. The 'launch window' is when all boats must start running on the water before this time expires; the last 10 seconds of clock time is a no launch period to the start of the race.
    ii. Failure for a boat to start running in this time period will result in a "Did not start".
    iii. Milling will be a half lap mill pattern. The starting device must verbally count down the time in one-second increments
    iv. Any boat that stops (thermaled) during the race or Mill period and does not immediately resume
and is deemed to be a Dead Boat (and will be called as ‘Dead Boat’) and must not be moved until so directed by the race controller.
    v. Self righting boats if capsized can not resume racing and is classed as stopped.



1/8th SCALE ELECTRIC HYDRO
a). Hulls to conform to SUHA/ MMPBC 1/8th scale racing rules (except motor) 
b). 10S 37v (nominal)
d). Safety Loops and isolating switches are optional.
e). MMPBC electric class racing rules apply 
f) Motor and speed controller open
g). All boats must be inboard motor powered with an effort made to conceal the motor with fake engine or cowling.



Q Class Hydro

Q Sport Hydro 
a). 6S 22.2Volts (nominal)
b). Motor and speed controller open
c). No gear boxes allowed. 
d). Fictitious teams may be created within the Spirit and shall at least resemble boats of the past and present Hydroplanes. The word "resemble" shall be loosely interpreted and as long as the boat is configured in the spirit of a real 3-point full-bodied hydro, it shall be deemed legal.  
e). Outriggers, modified outriggers or tunnels are not allowed. 
f). All boats must be inboard motor powered with an effort made to conceal the motor with fake engine or cowling. 
g). Safety Loops and isolating switches are optional. 
h). SUHA electric class racing rules will apply
i). Minimum hull length 35 inches (890 mm)

 

 

N2 HYDRO 

N2 Sport Hydro          
a)2S 7.4v (nominal) 
b). Any motor, motor Controller is open
c). All boats to resemble Hydroplanes from the past or present, Fictitious teams maybe created within the Spirit of the past and present Hydroplanes. The word "resemble" shall be loosely interpreted and as long as the boat is configured in the spirit of a real 3-point full-bodied hydro, it shall be deemed legal.
d). Outriggers, modified outriggers or tunnels are not allowed.
e). All boats must be inboard motor powered with an effort made to conceal the motor with fake engine or cowling.
f). Safety Loops and isolating switches are optional.
g). No gear boxes allowed
h). SUHA electric class racing rules will apply (4 Laps max)
i). Minimum hull length 20 inches. (508 mm)

 

 
N2 OFFSHORE 
a). 2S 7.4v (nominal) 
b). Any motor, Motor Controller is open
c). Offshore hulls must be a Deep-Vee (16 to 28 degree “V” angle) or an Offshore Catamaran type hull. The windshield or cockpit will be located no further forward than 65% of the hull’s length when measured from the transom. 
d). Freeboard, as measured at the tallest point on the side of the hull, will not be less than 25mm. 
e). Stepped hulls and flat keel ride pads will be allowed on both Deep Vee and Catamaran type hulls. 
f). Closed cockpits must have windshields. Windshields can either be clear, tinted or colour. Open cockpits must have drivers. 
g). All efforts should be made to colour and number hulls in the spirit of real offshore racing. However, this class is intended to be standoff scale class. 
h). Safety Loops and isolating switches are optional.
i). No gear boxes allowed 
j). MMPBC electric class racing rules will apply (4 Laps max)
k). Minimum hull length 20 inches. (508 mm)

 

P HYDRO
 

P SPORT HYDRO
a). 4S 14.8Volts (nominal)
b). Motor and speed controller open
c). Fictitious teams may be created within the Spirit and shall at least resemble boats of the past and present Hydroplanes. The word "resemble" shall be loosely interpreted and as long as the boat is configured in the spirit of a real 3-point full-bodied hydro, it shall be deemed legal.
d). Outriggers, modified outriggers or tunnels are not allowed.
e). All boats must be inboard motor powered with an effort made to conceal the motor with fake engine or cowling.
f). Safety Loops and isolating switches are optional.
g).No gear boxes allowed
h). SUHA electric class racing rules will apply
i). Minimum hull length 28 inches (710 mm)

 

P OFFSHORE 
a). 4S 14.8Volts (nominal)
b). Motor and speed controller open
d). Offshore hulls must be a Deep-Vee (16 to 28 degree “V” angle), Offshore Catamaran type hull.
e). Freeboard, as measured at the tallest point on the side of the hull, will not be less than 25mm.
f). Stepped hulls and flat keel ride pads will be allowed on both Deep Vee and Catamaran type hulls.
g). Closed cockpits must have windshields. Windshields can either be clear, tinted or coloured. Open cockpits must have drivers.
h). All efforts should be made to colour and number hulls in the spirit of real offshore racing. However, this class is intended to be stand-off scale class.
i). Safety Loops and isolating switches are optional.
j). MMPBC electric class racing rules will apply
k). Minimum hull length 24 inches. (710 mm) 

 

Q OFFSHORE 

a). 6S 22.2Volts (nominal)
b). Motor and speed controller open
d). Offshore hulls must be a Deep-Vee (16 to 28 degree “V” angle), Offshore Catamaran type hull.
e). Freeboard, as measured at the tallest point on the side of the hull, will not be less than 25mm.
f). Stepped hulls and flat keel ride pads will be allowed on both Deep Vee and Catamaran type hulls.
g). Closed cockpits must have windshields. Windshields can either be clear, tinted or coloured. Open cockpits must have drivers.
h). All efforts should be made to colour and number hulls in the spirit of real offshore racing. However, this class is intended to be stand-off scale class.
i). Safety Loops and isolating switches are optional.
j). SUHA electric class racing rules will apply
k). Minimum hull length 35 inches. (890mm)

 

 


OPEN ELECTRIC (44.4Volts Max)
Motor/Cell Options
a) 36 cell Ni-Chemistry 43.2Volt or Li-polymer batteries (Lipos) 12S1P or 12S2P 44.4Volts max.
b) Motor / speed controller type open
c) Hulls can be Mono, Catamaran, Hydro, Tunnel or Rigger.
d). Safety Loops and isolating switches are optional.
e). MMPBC electric class racing rules will apply (4 laps max)
f). To be raced by hull type were sufficient entries are obtained