What is Darton’s DualSync System? If you have been in archery long enough, you are familiar with 2 Cam bows. A 2 Cam bow uses a 2-groove design for each cam, one groove for the bowstring let-out and a second groove for the power cable take-up that is used to stress the limbs. The opposite end of the power cable is anchored to the axle to minimize the effect of any out of balance in the limbs and/or cam timing. As cam designs advanced and the need for more stored energy and let-off took place, the shortcomings of the traditional 2 cam design became apparent. Cam timing became critical to good shooting and string creep became critical to maintaining good cam timing. This opened the door to various new hybrid cam designs in an attempt to overcome each of these problems to some various degrees. Darton’s DualSync design has effectively eliminated all of the 2 cam problems and resulted in a cam system that is less critical than any other hybrid system to date. The new DualSync design includes a 2nd let-out groove on each cam that anchors the opposite end of each power cable instead of it anchoring to the axle. This design couples the two cams together so they function as a slave to each other and are always synchronized with each other. To best describe this design Darton has named it the DualSync System, covered by patent 6,990,970; another advancement in the development of Darton’s Control Power System (CPS).
The advantages of Darton’s DualSync bows become apparent after the first shot. They are quieter, smoother and faster than what you would expect from any other bow. Unlike a 2 cam bow, if the cams are not in sync there are no bumps at the end of the draw cycle and the nock travel does not jump up or down no matter how hard you pull against the draw stops. It doesn’t matter how far you are from optimum tune the nock travel is straight and the stored energy is smooth. All of this adds up to a new level of shootability.
In addition to the obvious advantages of Darton’s DualSync design, for the shooter there are also other inherent advantages. By having a second let-out groove on each cam that controls the wrap of the power cable on the module, we are able to control limb stress better and have larger radiuses to wrap for longer cable life. There are no trade off’s, the results of this are both a higher level of stored energy and dynamic efficiencies than even thought possible only a few years ago.