| 11. | The copper drive bands of the rounds were poorly machined, and constant firing was damaging the gun rifling.
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| 12. | The wider driving bands resulted in an increased weight to 10.4 kilograms for the PzGr . 39 / 43.
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| 13. | Over this, the expected barrel wear combined with the narrow driving bands could lead to a loss of pressure.
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| 14. | :The CVT consumes power in flexing the big rubber drive band which makes it a somewhat inefficient drive mechanism.
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| 15. | Other than minor differences with the projectiles driving bands, all German 75 mm guns used the same 75mm projectiles.
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| 16. | Because of the three wide equal width driving bands, the total bearing surface is half the length of the bullet.
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| 17. | While the spinner is making new yarn, the bobbin and the flyer turn in unison, driven by the single drive band.
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| 18. | The drive band turns the flyer, which is the horse-shoe shaped piece of wood surrounding the bobbin, as well as the bobbin.
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| 19. | Generally the speed difference or " ratio " is adjusted by the size of the whorls and the tension of the drive band.
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| 20. | Because of the three wide equal width driving bands, the total bearing surface is greater than half the overall length of the bullet.
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