These rules supersede all published rules and are effective as of December 7th 2016. For a downloadable PDF file of the rules listed below click here: LNBS Rules Dec 2016.pdf .
1) Each entrant must contain a component that conforms to the general shape and design of an old style ROLL EDGE bathtub as commonly known and recognized (hereinafter called “tub”).
2) Entries may be stabilized with any material providing the tub is an integral part of the design.
3) The complete tub rim must be exposed (except at the stern)
4) At least 6 inches of the tub wall on each side must be visible and unobstructed from the apex of the rim down.
5) Viewed from above, at least 75% of the interior of the tub must be visible and unobstructed.
6) All tubs must weigh a MINIMUM of 350 pounds with: driver, engine, all required coast guard safety equipment, gasoline tank and remaining gas.
7) In cases whereby weight needs to be added, disposable ballast is not allowed (ie: water).Weight must be permanently ATTACHED.
8) Each tub must have a tow point securely attached in a central fixed position on the bow. The tow point must be of a solid structure capable of supporting the tub under tow when it is fully immersed in water.
9) Each entry must have at least 3 cubic feet of flotation (NOT including the fuel tank). The flotation may be foam, air cavity, cork, or any suitable material, but must remain an integral and permanent part of the entry.
1) STOCK MEANS STOCK.
2) The largest engine allowed for use on a tub is 10 horsepower as per manufacturers rating. No modifications to the engine are permitted.
3) The interior and exterior of the power head and its components must remain stock.
4) No internal modifications are allowed, beyond those of normal repair or rebuild.
5) All replacement parts must be factory OEM parts only; no after market parts are allowedunless proven discontinued. LNBS Rules committee & technician must be notified of the partin question prior to tech.
6) To allow for engine rebuilds, engines may be rebuilt:
8) Propellers must be STOCK (factory supplied for the make and model being used).
9) No modifications to stock props are allowed with the exception of filing out rock chips.
10) No cupping or polishing on the propeller is allowed.
11) No altering of the paint or use of speed paint is allowed on the motor or gear case.
12) No addition of a doel–fin, Shark-fin, or horizontal wing to assist in planing is allowed.
13) No alteration of the water pick-up to assist in cooling is allowed.
14) Relieving the exhaust (ie: external cut-out) is not allowed.
15) Exhaust ports may not be modified.
16) Casting parts above the cavitation plate on the leading edge of the leg may be ground down to allow for leg supports.
17) Where an engine is equipped with an oil pump, the oil pump must remain in working order.
1) The largest engine allowed for use on a tub is 10 horsepower as per manufacturer's specifications.
2) All exterior of the power head and its components must remain stock and unmodified, including timing stop but excludes the exhaust pipe.
3) Oil injection systems may be disabled and removed.
4) Internal part modifications are permitted with parts intended for use on 10hp or less power heads.
5) Custom made engine parts are permitted with the exception of Block and Carburetor.
6) Use of any after market parts for the make and model used are permitted.
7) Relieving of the exhaust above the cavitation plate on the gear case is permitted.
8) The Leg (that part of the engine housing the gears, water pump and propeller shaft below the point where the gear case bolts on to the exhaust housing) may be altered but must retain 10hp or less internal components as per manufacturer's specifications.
9) Special propellers, propeller nuts and propeller cones are permitted.
10) Altered or substitute propeller shafts are not permitted except where the manufacturer’s stock shaft is not splined and threaded or proven discontinued.
11) When the engine or motor manufacturer supplies no means of propulsion the entrant is permitted to improvise a method of propulsion on the water. Inboard engines must have the drive shaft and drive gear covered for pilot safety.
12) Any entrant intending to use an engine or motor not commonly available for marine use, must submit the factory specifications of such an engine or motor to the LNBS or its agent for approval, at least 30 days prior to participation in any race.
13) External water intake is permitted.
1) No challenge, claim, dispute, or complaint will be accepted for consideration or evaluation unless made within one hour of the end of the race, as declared by the Race Secretary, or Rules Committee.
2) Any challenge, claim, dispute, or complaint must be submitted to the Race Secretary in writing along with a fee of $350.00, for consideration or evaluation by the LNBS or its agents, who retain such fee at its discretion, whether or not it rules in favour of any party filing such a challenge, claim, dispute, or complaint.
3) Any challenges, claims, disputes, or complaints may only be made through the owner, pilot, or sponsor of the entry.
4) Any infractions, breach of, or attempt to frustrate the rules may result in automatic disqualification, and the owner, pilot, or sponsor may be liable for suspension from bathtub racing. If motor is found to be illegal, it will be returned disassembled.
5) The decisions of the Race Organizers, Rules Committee Chairperson, are final, subject only to the consideration by the LNBS.
6) Every entry must appear to be and convey the impression of a bathtub as commonly known and recognized, and all entrants must comply with the “Spirit and Intent” of bathtub racing.
7) For World Cup points, the Sanctioning Committee will be the LNBS agent’s.
1) The largest engine allowed for use on a tub is 10 horsepower motor as stated in the manufacturers published specifications.
2) When a tub is equipped with a steering system, all parts to the throttle must be factory Original Equipment Manufacturer (OEM) except in the case of non traditional marine engine installations. ie: inboards
3) Transom supports must be an integral part of the tub. Engines or motors must be mounted directly on the transom or within the tub (reinforcing is permitted).
4) Composite engines or motors are not permitted.
6) Lubricants and oils used remain the option of the entrant.
7) Any type of spark plug may be used.
8) Custom made engine parts are not permitted unless proven discontinued.
9) For Stock & Modified class Tubs, Carburetors must remain stock and unmodified for the engines make, year, and horsepower rating.
10) Engine or motor mounts may be repaired and/or reinforced.
11) Tiller arms may be repaired and/or reinforced.
12) For Stock & Modified, Engines or motors specifically produced for racing are not allowed.
13) All components of the engine cowlings and/or covers must be properly installed and in place throughout the race and must be standard for that particular engine.
14) Engine must be able to be re-started at the completion of the race.
15) All safety interlocks must be used and in working condition.
16) The LNBS, Rules Committee, or its agent shall, at its discretion, inspect any entry to ANY degree, which it deems necessary to determine the legality of said entry.
17) Any entrant intending to use an engine or motor not commonly available for marine use, must submit the factory specifications of such an engine or motor to the Loyal Nanaimo Bathtub Society or its agent for approval, at least 30 days prior to participation in any race.
MODIFIED MEANS STOCK ENGINE WITH ANY TYPE OF PROPELLER.
1) The largest engine allowed for use on a tub is 10 horsepower as per manufacturers specifications.
2) The interior and exterior of the power head and its components must remain stock.
3) No internal modifications are allowed, beyond those of normal repair or rebuild.
4) All replacement parts must be factory OEM parts only; no after market Parts permitted unless proven discontinued. LNBS Rules committee & technician must be notified of the part/parts in question prior to tech.
5) To allow for engine rebuilds, engines may be rebuilt:
6) The exterior of the lower gear case (that part of the engine housing the gears, water pump and propeller shaft below the point where the gear case bolts on to the exhaust housing) may be altered but must retain all of the stock running gear (no mechanical modifications of the exhaust housing or "leg" will be permitted).
7) An exhaust outlet cut immediately above the cavitation plate (diverting exhaust from thepropeller) is permissible.
8) Special propellers, propeller nuts and propeller cones are permitted.
9) Altered or substitute propeller shafts will not be permitted except where the stock manufacturer’s shaft is not splined and threaded or proven discontinued.
10) The exterior portion (outside the gear case) of the shaft may be modified to accommodate surfaceplaning propellers.
11) No changes to the internal part of the shaft are permitted.
12) When the engine manufacturer supplies no means of propulsion, the entrant is allowed toimprovise a method of propulsion on the water.
13) External water intake is permitted.
1) All tub pilots must show proof of their safe boating certificate as per the Canadian Coast Guard regulations or equivalent. Nothing in these rules shall be construed to supercede Canadian Government laws and regulations with respect to the operation of watercraft.
2) Kill switch or Cut-out device:
3) Each pilot must wear:
4) All entrants must ensure that their tubs and their escort boats and/or support boats, are in compliance with the Canadian Coast Guard regulations for the size of craft being operated. TheLoyal Nanaimo Bathtub Society (hereinafter referred to as the LNBS) reserves the right to exclude any tub, escort boat, or support craft that does not adhere to these regulations.
5) Each tub must conform to the LNBS regulations by carrying a manual propelling device (ie: paddle), a bailer, a whistle, and a flashlight or flares, and 15 meters of buoyant heaving line:
6) Each tub must display their official LNBS approved number:
7) Tubs and hulls must be a light or bright colour (brown, black, dark blue ETC., are not acceptable).
8) Where a finish line involves a beach finish, when the pilot comes in, the tub must not be raced up the beach or ramp, but must come to rest with at least part of the tub and the skeg in contact with the water. Infraction of this rule will mean race disqualification.
9) Where a finish line involves a beach finish, it is the pilot’s responsibility to avoid other tubs and other persons. Hitting other tubs or people at the finish line will mean disqualification.
10) Each race entry (tub) must be operated by a registered pilot from within the tub.
11) All pilots MUST attend the pre-race safety meeting for that days race. Failure to do so will result in disqualification.
12) All pilots under the age of 19 must have a parent or guardian sign the race entry form for each race.
13) The minimum age for racing is 14 years old as of the date of the race.
14) Tubs cannot be towed to achieve “plane” before or during the race.