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Viper 640
Sail Information
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Viper News
2009 Charleston Race Week - North Sails 1,2!
Charleston Race week featured a full range of conditions in the three day regatta. 28 Vipers competed in the 10 race series. Competition was close among the top 9 places. In the end 2 boats with full North One Design Inventories finished first and second. First was David Guggenheim ably assisted by Ethan Bixby and Mark Cribbs. Second was Stu Hebb, with Ci Ci Imbrie and Ched Proctor. Friday's races were sailed in a building North-Northeast breeze which built to a solid 22- 25 knots resulting in some exciting downwind rides and spectacular wipe outs. 4 races were run. Saturday was lighter starting with a light air race, and built to 10-12 for the last of 3 races that day. Sunday's 3 races had the wind out of the South making for flat water and a shifty breeze.
For more information on the North One design Viper sails contact Ched Proctor or Brian Hayes at North sail East, Chuck Allen at North sails Rhode Island.
Click here for complete results
2009 Coral Reef Cup - North Sails 1,2*!
Boats equiped with North mains and jibs dominated the Viper 640 racing at the 2009 Coral Reef Cup. Finishing first aas Stu Hebb sailing his first ever Viper regatta. Second was class president Justin Scott. Conditions were light for the first race building to a typical Biscayne Bay 15 knots by the end of the third race. 2 races were sailed on Saturday in 12-14 from the North East also. Sunday's 2 races were sailed in solid 18-22 providing super fast downwind rides. Stu Hebb used the North main, jib and spinnaker. Justin's co skipper was Jeff Lee and his regular crew Len Burke. Stu was assisted by CeCe Embrie and Ched Proctor.
* North partial inventory
Click here for complete results
2009 St. Pete NOOD - North Sails 1*,3,4
Viper class president and North American champion, Justin Scott used a New North main and jib to win the Viper class at the St.
Petersburg NOOD regatta. In third place was David Guggenheim using a new North Main, jib and spinnaker. Fourth was North customer Jason Weisberg. Conditions were light.
For more information on the North One design Viper sails contact Ched Proctor or Brian Hayes at North sail east, Chuck Allen at North sails Rhode Island.
* North main and jib |
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The Viper 640 is a decade old design which is now just coming into its’ own as a the sportboat of choice for many one design sailors. The Brian Bennett design is now being produced by Rondar Boats and, with their strong backing, has grown into a very viable one design class. Strong grass roots support has shown the Viper 640 grow in many areas including the Southeast, New England, Texas and Long Island Sound and with nearly 40 boats expected at Charleston Race Week in April 2009 it has obviously caught the attention of many performance minded racers.
North Sails involvement with the Viper 640 began over a decade ago and, with the recent resurgence of active fleets, North Sails position as the most experienced Viper 640 sailmaker has begun, once again, to show it’s mark. By actively racing in the class we have once again refined our designs and tuning to match the updated carbon rig and keel configuration to make it easier to get the boat tuned up and going fast!!
Photos courtesy Brian Bennett.
NORTH
VIPER MAINSAIL
The 2009 Viper 640 mainsail has been designed to take advantage of a tuning system that emphasizes simplicity while optimizing speed! The OEM supplied sails require an extreme amount of prebend to get near their designed shape our main requires only 1”-3” of prebend. This shape enables you to chock the mast in light air to induce the proper amount of headstay sag while enabling you to block the mast back in fresher breezes to straighten the headstay and allow optimal use of vang sheeting.
Our 2009 design has other new features as well including optimizing the batten positions on the full length battens enabling us to maximize the size of the sail at the measured girth points as well as relocating the jib leech window for better viewing of the jib leech telltale for both helmsman and trimmer.
The 2009 North Viper 640 mainsail is made from AP12-Pentex cloth. Unlike the OEM polyester fiber main, our mainsail has lower stretch which enables the sail to hold its’ designed shape better in stronger breezes while still being over 1 pound lighter than the standard OEM-polyester sail. Lighter, faster, stronger and more durable. All the assets of a perfect sportboat mainsail!
Mainsails include: sail numbers, insignia, vision window and
sail bag.

NORTH VIPER JIB
The 2009 North Viper 640 jib has been changed as well. To start we have lowered the jib clew so that the jib lead adjustment is more effective and each change has a distinct effect on enhancing performance. Also, our jib features a full-length top batten which helps the top of the sail twist more effectively which allows more control with the jib sheet and the ability to trim harder! Our 2009 Viper 640 jib, like our main, is made from AP12-Pentex cloth, which delivers superior shape holding, strength, durability and weight savings over the OEM-polyester sails. Combine all this with a design that features a fuller entry, flatter leech and a maximum length tapered bottom batten as well as additional panels in the head which assist in adding durability to the sails shape and you have a proven performance leader.
Jibs include:
telltales and sail bag.

NORTH VIPER ASYMMETRICAL
SPINNAKER
The 2009 North Viper 640 spinnaker has been designed utilizing the knowledge we have gained on making championship winning sails for a variety of sportboats. Our first project was to maximize the size of our 2009 design which, in doing so, makes our sail class maximum size which is something that the OEM sails are not. Our next goal was to create a design that would twist and rotate better so that we could sail lower angles while sailing the same speed or faster. Our 2009 Viper 640 spinnaker enables you to do just that. Maximum size, lower and faster. The perfect Viper 640 spinnaker.
it’s clear to see that we have done our homework and are offering the best built, best designed, most researched Viper 640 designs available. Our Viper 640 team will be available to help support you and the Viper class. Look for us at Charleston Race Week, at the Nationals and at various Viper 640 regattas throughout the year.


For more information on Viper sails, contact
the North Viper experts.
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