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1A—Belly, IB—Neutral zone, 1C—Back. occupies a much greater area. Zone (iB) is greatly reducedwhile Zone (iC) remains practically the same; this resultedin a much faster bow and one that was free from frets. These experiments were expanded with a view to creatinga still more efficient weapon. It was found that the ratio ofcompression and stress was about 45% stretch and 55% com-
2A—Belly, 2B—Neutral zone, 2C—Back. pression. It was reasoned that if the area of compression(2A, Fig. 9) was 20% greater than (2C, Fig. 9), the ratiowould about balance. This resulted in the trapezoidal design (Fig- 9)- In Fig. 9 we note Zone (2A) occupies the greatest areaof any of the dimensions of this cross section. A full quota offibres are arrayed to bear the load equally and in unison. Nobow of this design has ever developed a fret. The neutralZone (2B) is reduced to a minimum yet it performs the sameduty as Zone B in Fig. 7. This eliminates a lot of mass andweight. Zone 2C has not been greatly altered during thisseries of design changes. The trapezoidal bow is the most |
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