Quantum J/70 Class Sails
J/70 Sail Development by Quantum Sail Design Group
Quantum Sail Design Group is an acknowledged leader in advanced sail making technology and sail development. These tools, combined with top sail designers, have led to Quantum’s dominance in many J boat classes. For these reasons, Quantum was chosen by J Boats to be one of the lead sail developers for the new J/70.
The J/70 sail designs feature Quantum's high-quality sail construction details including the best sailcloth and large redial patches in the head and clew.
For the class asymmetrical, precise modeling techniques were used to fine-tune the size and geometry of the sail to maximize performance. The sail was also evaluated on its versatility; with one class sail, the ability to adjust to different wind speeds and angles is essential.
Quantum's Marty Kullman is leading the J/70 class for Quantum. He brings a wealth of experience to the class with 20 years of asymmetrical sailing ranging from TP52, Melges 20, J/80, and boats as small as a VX One. Marty is competing at several J/70 events, fine-tuning boat setup and rig tune and making this information available to other competitors through daily regatta debriefs, clinics, and practice sessions. You can follow the Quantum J/70 efforts here on our website as well as on Facebook and Twitter.
Photo © Photoboat
Quantum dominated the J/70 class at the 2014 Newport Regatta last weekend with reps Allan Terhune, Jr. and Marty Kullman finishing in first and second places. Aboard Dazzler, Terhune scratched the results of a disastrous 23rd place finish in the third race, coming back to win the fourth race and finish ... continue reading
Congratulations to Calvi Network and owner and helmsman Carlo Alberini for another big win at the J/70 Italian Class Nationals in Scarlino this past weekend. Alberini took first in all four races to claim the overall win on a perfect day. Great sailing Team Calvi!
To see full results, visit the J/70 Italian ... continue reading
Jerry Diercks and Delerium won three races and placed second twice to win the J/105 division of the Sperry Top-Sider Seattle NOOD last weekend, winning by four points. Also winning in their division was Sail Northwest’s J/70 Just Listed. Just Listed dominated the division with seven first place finishes and three ... continue reading
In the fiercely competitive J/70 class at 2014 Sperry Top-Sider Charleston Race Week, Rob Britts and team on Hot Mess gave the pros a run for their money by taking second overall and the Corinthian title. This achievement comes on the heels of Britts' Corinthian win and second place overall at ... continue reading
Congratulations to the top teams at the 2014 Quantum J/70 Winter Series at Davis Island Yacht Club. Quantum® teams won both the overall and Corinthian titles! Great sailing by Rob and Sandy Butler with Quantum's Marty Kullman on Touch2Play which took first place overall just one point over Rob Britts and ... continue reading
At Quantum Key West 2014, Quantum Detroit’s Wally Cross is sailing with Dan Cheresh on a new J/70, “Extreme.” Wally says, “Dan and I worked at Hood Sails in the late 70’s and then Ullman Sails in the early 80’s. We have been friends for a long time and it is ... continue reading
At Quantum we have been working on a system for the J/70 jib in order to achieve a good sail shape for all wind ranges. Whereas other types of boats allow multiple head sails to optimize for light or heavy air, only one jib is permitted for the J/70. With Quantum’s ... continue reading
Quantum 2014 J/70 Winter Series at Davis Island Yacht Club
Event 1 of 3: January 11-12, 2014
If you are attending the first J/70 Winter Series regatta, we invite you to join Quantum’s Marty Kullman for a pre-regatta clinic on January 9th and 10th starting at 1:00 pm daily. The clinics will include ... continue reading
Light air jibes demonstrated on a Melges 24 by Chris Rast of Swiss Performance Sailing.
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Lakewood Yacht Club in Seabrook, TX hosted the J/Fest Regatta this past weekend. Over 60 J Boats participated in racing offered in one design classes and PHRF for the larger boats. J Boats designer Rod Johnston was on hand to race his latest project the J/88. Side note: Quantum has designed ... continue reading