Post by plewin on Jan 16, 2018 12:23:10 GMT
8 metre class rules for use at Poole Radio Yacht Club 2018
8metre class rules for Poole Radio Yacht Club.
A. One Design Clause. The primary purpose of these rules is to regulate all 8 metre boats used for racing at Poole RYC to be equal in all characteristics that effect performance.
Modifications. No modifications or additions or substitutions shall be made to any supplied boat part unless it is specifically detailed in this document.
Manufactured Standard. Only boat parts supplied by the manufacturer shall be used unless specific authorization is given within these rules to allow substitution. These are on the basis that if it does not say something is specifically allowed, it shall not be permitted.
Radio Equipment. Only two channels of radio equipment may be used. (one for the sails and one for the rudder) That radio equipment may feature:- end point adjustment, differential rates and all other methods of altering the response rate and throw of the servos. The equipment may use radio transmissions from the boat (telemetry) that indicate servo position, onboard battery monitoring and radio link information only.
Batteries. These may be of any suitable type for the receiver and servos. Battery voltage monitors are permitted (even encouraged) but a battery switch is optional.
Sailing Weight. The boat and rig in sailing condition must weigh between 7.00 And 7.5Kgs All ballast must be of a density no greater than that of lead (11300kg/m3)
B – Authorised modifications to a standard boat.
Cosmetic Alterations. The hull may be flatted down and painted if desired.
The drawing in of a planked deck and additions of scale like cabins is permitted (total sailing weight must not be compromised). Any flatting down process must not alter the profile of any component. A modification to the rear of the keel to stop weed catching on the lower rudder mount may be made provided it is no larger than 20mm fore/aft and 10mm wide and does not extend more than 5mm below the keel.
Electronic and electro mechanical fittings.
The sail and rudder servos may be replaced. The material and dimensions of the arm may be altered. Electronic devices may be introduced between the receiver and servos that will limit or extend the throw of those servos.
A BEC or voltage regulator may also be used but no form of gyroscope or similar electro/mechanical stabilisation is permitted.
Running rigging can be from any suitable material but adjustments to running rigging must be made by bowsie or sliding grommets only.
The Jib topping lift may incorporate a method to stop it catching on the spreaders if desired. The shrouds must be adjusted by turnbuckles.
A jib counterweight may be added if desired. It must not exceed 20gms in weight or its foremost part extend more than 60mm from the end of the boom.
The foresail swivel may be replaced with a ballraced device, or a Kevlar/polyester line may be used.
The kicker(vang) may be replaced with one of a different design but should not incorporate a vertical plate.
The attachment point of the backstay to the deck may be moved if desired.
Replacement sails are limited to those produced by Housemartin sails,
Sails may have coloured corner reinforcement patches. Luff tapes may also be coloured.
Tell tails may be attached to the sails and rigging.
B. Rig and sails
If the spars are replaced they must be of round section alluminium with an external diameter of 11.1 mm +/- 1mmfor the mast, 10mm +/-1mm for the booms.
Main boom length min 390mm
Jib boom length min 290mm
Masthead crane to have maximum length of 60mm and the shall
be at 90 degrees to the mast.
The measurement from the mast cap to the stern of the boat with no tension in the backstay shall not be less than 1470mm
The booms must not visibly deviate from straight when not loaded.
The mast shall have no prebend. (i.e. shall be straight when there is no forestay and back stay tension).
Grooved masts and rectangular section booms are not permitted.
Sails shall be made from the same ply throughout and have no more than 3 parts joined by seams.
Sails shall not deviate below a straight line joining the tack and clew.
The material shall be either50 micron film or 140gm Dacron/ scrim
The main sail.
Luff Length 1275mm min 1285mm max
Leach Length 1325mm min 1335mm max
Head width 20mm max
Foot Length 380mm min 390mm max
1/3 rd width 275mm min 285mm max
2/3 rd width 155mm min 165mm max
Shall have 2 battens of length no greater than 80mm at the position of the seams.
Batten width max 10mm
Cringles max 10mm diam.
Reinforcement patches max.125mm from corner
Seam width max 10mm
JIB
Luff Length 1050mm min 1060mm max
Leech Length 1010mm min 1020mm max
Foot Length 280mm min 290mm max
Head width 20mm max
Cringles max 10mm
Seam width max 10mm
Reinforcement patches max.125mm from corner
No Battens
Sail Numbers.
Initially as supplied, but to be increased to 100mm height a.s.a.p. and certainly on new sails.
Alterations to standard rules of sailing
Boats will be permitted to make contact with buoys marking the course (with the exception of those marking the start and finish line) without being required to do a penalty turn.
Shortening the course.
The course may be shortend whilst a race is in progress provided it is done before the leading boat rounds the buoy that will become the last mark of the course before the finish line. All helms must be made aware of the changes.
8metre class rules for Poole Radio Yacht Club.
A. One Design Clause. The primary purpose of these rules is to regulate all 8 metre boats used for racing at Poole RYC to be equal in all characteristics that effect performance.
Modifications. No modifications or additions or substitutions shall be made to any supplied boat part unless it is specifically detailed in this document.
Manufactured Standard. Only boat parts supplied by the manufacturer shall be used unless specific authorization is given within these rules to allow substitution. These are on the basis that if it does not say something is specifically allowed, it shall not be permitted.
Radio Equipment. Only two channels of radio equipment may be used. (one for the sails and one for the rudder) That radio equipment may feature:- end point adjustment, differential rates and all other methods of altering the response rate and throw of the servos. The equipment may use radio transmissions from the boat (telemetry) that indicate servo position, onboard battery monitoring and radio link information only.
Batteries. These may be of any suitable type for the receiver and servos. Battery voltage monitors are permitted (even encouraged) but a battery switch is optional.
Sailing Weight. The boat and rig in sailing condition must weigh between 7.00 And 7.5Kgs All ballast must be of a density no greater than that of lead (11300kg/m3)
B – Authorised modifications to a standard boat.
Cosmetic Alterations. The hull may be flatted down and painted if desired.
The drawing in of a planked deck and additions of scale like cabins is permitted (total sailing weight must not be compromised). Any flatting down process must not alter the profile of any component. A modification to the rear of the keel to stop weed catching on the lower rudder mount may be made provided it is no larger than 20mm fore/aft and 10mm wide and does not extend more than 5mm below the keel.
Electronic and electro mechanical fittings.
The sail and rudder servos may be replaced. The material and dimensions of the arm may be altered. Electronic devices may be introduced between the receiver and servos that will limit or extend the throw of those servos.
A BEC or voltage regulator may also be used but no form of gyroscope or similar electro/mechanical stabilisation is permitted.
Running rigging can be from any suitable material but adjustments to running rigging must be made by bowsie or sliding grommets only.
The Jib topping lift may incorporate a method to stop it catching on the spreaders if desired. The shrouds must be adjusted by turnbuckles.
A jib counterweight may be added if desired. It must not exceed 20gms in weight or its foremost part extend more than 60mm from the end of the boom.
The foresail swivel may be replaced with a ballraced device, or a Kevlar/polyester line may be used.
The kicker(vang) may be replaced with one of a different design but should not incorporate a vertical plate.
The attachment point of the backstay to the deck may be moved if desired.
Replacement sails are limited to those produced by Housemartin sails,
Sails may have coloured corner reinforcement patches. Luff tapes may also be coloured.
Tell tails may be attached to the sails and rigging.
B. Rig and sails
If the spars are replaced they must be of round section alluminium with an external diameter of 11.1 mm +/- 1mmfor the mast, 10mm +/-1mm for the booms.
Main boom length min 390mm
Jib boom length min 290mm
Masthead crane to have maximum length of 60mm and the shall
be at 90 degrees to the mast.
The measurement from the mast cap to the stern of the boat with no tension in the backstay shall not be less than 1470mm
The booms must not visibly deviate from straight when not loaded.
The mast shall have no prebend. (i.e. shall be straight when there is no forestay and back stay tension).
Grooved masts and rectangular section booms are not permitted.
Sails shall be made from the same ply throughout and have no more than 3 parts joined by seams.
Sails shall not deviate below a straight line joining the tack and clew.
The material shall be either50 micron film or 140gm Dacron/ scrim
The main sail.
Luff Length 1275mm min 1285mm max
Leach Length 1325mm min 1335mm max
Head width 20mm max
Foot Length 380mm min 390mm max
1/3 rd width 275mm min 285mm max
2/3 rd width 155mm min 165mm max
Shall have 2 battens of length no greater than 80mm at the position of the seams.
Batten width max 10mm
Cringles max 10mm diam.
Reinforcement patches max.125mm from corner
Seam width max 10mm
JIB
Luff Length 1050mm min 1060mm max
Leech Length 1010mm min 1020mm max
Foot Length 280mm min 290mm max
Head width 20mm max
Cringles max 10mm
Seam width max 10mm
Reinforcement patches max.125mm from corner
No Battens
Sail Numbers.
Initially as supplied, but to be increased to 100mm height a.s.a.p. and certainly on new sails.
Alterations to standard rules of sailing
Boats will be permitted to make contact with buoys marking the course (with the exception of those marking the start and finish line) without being required to do a penalty turn.
Shortening the course.
The course may be shortend whilst a race is in progress provided it is done before the leading boat rounds the buoy that will become the last mark of the course before the finish line. All helms must be made aware of the changes.