Which one is more powerful, 8 strands or trailer?

The calculation and ranking of the tension of the leather bands is based on the premise that the same brand of leather bands have the same stretch ratio. To 2040 four strands as a base, set 2040 four strands of tension for 1, 1842 eight strands of 2.4, depending on the bow, the traditional not more than 13 card ball not more than 20, can be made into a ratio of one to one, hanging the bow is heavy leather band behind the light leather band.

Heavy bow tension, holding the bow elbow by the sudden contraction of the leather band at the time of firing, the impact of the anti-joints, it is easy to cause injury, the use of heavy bows can be used to reduce the tension of the leather band a little longer, the arm does not straighten, pulling the bow does not pull the full method, to avoid injury, and then gradually adapted to the normal requirements of the practice, and then return to normal requirements.